A method and apparatus for determining a fuel evaporation control system, a vehicle, and a storage medium

Abstract

The present invention discloses a method, device, vehicle and storage medium for determining a fuel evaporation control system. The method includes: based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, conducting a first evaporative emission test and a first refueling emission test to determine the maximum desorption amount of evaporative emissions and the maximum desorption amount of refueling emissions of the initial fuel evaporation control system; based on the initial fuel evaporation control system including the initial charcoal canister and a closed charcoal canister solenoid valve, conducting a second evaporative emission test and a second refueling emission test to determine the desorption amount of evaporative emissions required and the desorption amount of refueling emissions required; respectively comparing the maximum desorption amount of evaporative emissions with the desorption amount of evaporative emissions required, and the maximum desorption amount of refueling emissions with the desorption amount of refueling emissions required, and determining the target fuel evaporation control system according to the comparison results and design requirements. It is realized to accurately determine a fuel evaporation control system that complies with regulations and meets design requirements by combining the charcoal canister and the charcoal canister solenoid valve.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of vehicles, and in particular, to a method, a device, a vehicle, and a storage medium for determining a fuel evaporation control system. Background Art

[0002] With the increasingly serious environmental problems, restricting vehicle emissions has become a consensus. In fuel vehicles, a fuel evaporation control system including a carbon canister and a fuel adsorption and desorption control system is provided. The carbon canister is used to store the fuel vapor generated by the evaporation of fuel in the fuel tank and the fuel vapor generated during the refueling process, preventing it from leaking into the atmosphere and reducing environmental pollution; the fuel adsorption and desorption control system can timely send the fuel vapor collected in the carbon canister into the intake manifold of the engine to restore the adsorption capacity of the carbon canister. The fuel vapor is mixed with the normal air-fuel mixture and participates in combustion in the engine, so that the fuel vapor is fully utilized. The performance of the fuel evaporation control system is mainly related to the adsorption capacity of the carbon canister and the desorption capacity of the fuel adsorption and desorption control system.

[0003] In the prior art, the design of the carbon canister and the design of the fuel adsorption and desorption control system are separated, and it is impossible to accurately evaluate whether the fuel evaporation control system meets the regulatory requirements, and thus it is impossible to accurately determine the fuel evaporation control system. Summary of the Invention

[0004] The present invention provides a method, a device, a vehicle, and a storage medium for determining a fuel evaporation control system, so that the determined fuel evaporation control system complies with regulations and meets the design requirements.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining a fuel evaporation control system, including:

[0006] Based on an initial fuel evaporation control system including an initial carbon canister and a calibrated carbon canister solenoid valve, perform a first evaporation emission test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and perform a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system;

[0007] Based on the initial fuel evaporation control system including the initial carbon canister and the closed carbon canister solenoid valve, perform a second evaporation emission test to determine the required desorption amount of evaporation emissions, and perform a second refueling emission test to determine the required desorption amount of refueling emissions;

[0008] Compare the maximum desorption amount of evaporation emissions with the required desorption amount of evaporation emissions, and compare the maximum desorption amount of refueling emissions with the required desorption amount of refueling emissions, respectively, and determine the target fuel evaporation control system according to the comparison results and the design requirements.

[0009] The technical solution of the embodiment of the present invention provides a method for determining a fuel evaporation control system, including: based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, conducting a first evaporation emission test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and conducting a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system; based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conducting a second evaporation emission test to determine the desorption amount of evaporation emission requirements, and conducting a second refueling emission test to determine the desorption amount of refueling emission requirements; respectively comparing the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements, and determining a target fuel evaporation control system according to the comparison results and design requirements. The above technical solution can first conduct a first evaporation emission test and a first refueling emission test on the vehicle based on the calibrated charcoal canister solenoid valve to respectively determine the maximum desorption amount of evaporation emissions and the maximum desorption amount of refueling emissions of the initial fuel evaporation control system, and can also conduct a second evaporation emission test and a second refueling emission test on the vehicle based on the closed charcoal canister solenoid valve to respectively determine the desorption amount of evaporation emission requirements and the desorption amount of refueling emission requirements. Furthermore, the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements can be respectively compared, and a target fuel evaporation control system can be determined according to the comparison results and design requirements, and then the model of the charcoal canister and the state of the charcoal canister solenoid valve can be determined, realizing the accurate determination of the fuel evaporation control system by combining the charcoal canister and the charcoal canister solenoid valve, so that the determined fuel evaporation control system complies with regulations and meets the design requirements.

[0010] Further, before conducting a first evaporation emission test based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and conducting a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system, it further includes:

[0011] Determine the initial desorption efficiency curve corresponding to the initial charcoal canister.

[0012] Further, conducting a first evaporation emission test based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system includes:

[0013] When conducting the first evaporation emission test based on a preset process, determine the air volume entering the initial charcoal canister during high-temperature driving through the flow meter included in the initial fuel evaporation control system;

[0014] In the initial desorption efficiency curve, determine the first desorption mass corresponding to the air volume, and determine the maximum desorption amount for evaporative emissions based on the first desorption mass.

[0015] Further, based on an initial fuel evaporative control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, conduct a first refueling emission test to determine the maximum desorption amount for refueling emissions of the initial fuel evaporative control system, including:

[0016] When conducting the first refueling emission test based on a preset process, determine the total volume of air entering the initial charcoal canister during a type I pretreatment driving test, a type I test driving test, and a refueling control system processing driving test through the flowmeter included in the initial fuel evaporative control system;

[0017] In the initial desorption efficiency curve, determine the second desorption mass corresponding to the total volume of air, and determine the maximum desorption amount for refueling emissions based on the second desorption mass.

[0018] Further, based on the initial fuel evaporative control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conduct a second evaporative emission test to determine the desorption amount required for evaporative emissions, including:

[0019] Determine the first mass of the initial charcoal canister before the second evaporative emission test is conducted;

[0020] Conduct the second evaporative emission test, replace the initial charcoal canister after the second fuel drain and 40% refueling, and close the charcoal canister solenoid valve during a high-temperature driving test;

[0021] Determine the second mass of the initial charcoal canister after the second evaporative emission test is completed;

[0022] Determine the desorption amount required for evaporative emissions based on the first mass and the second mass.

[0023] Further, based on the initial fuel evaporative control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conduct a second refueling emission test to determine the desorption amount required for refueling emissions, including:

[0024] Determine the first mass of the initial charcoal canister before the second refueling emission test is conducted;

[0025] Conduct the second refueling emission test, replace the initial charcoal canister after the second fuel drain and 40% refueling, and close the charcoal canister solenoid valve during a type I pretreatment driving test, a type I test driving test, and a refueling control system processing driving test;

[0026] Determine the third mass of the initial carbon canister after completion of the second refueling emission test;

[0027] Determine the desorption amount required for refueling emissions based on the first mass and the third mass.

[0028] Further, compare the maximum desorption amount of evaporative emissions and the desorption amount required for evaporative emissions, and compare the maximum desorption amount of refueling emissions and the desorption amount required for refueling emissions. Determine the target fuel evaporative control system according to the comparison results and design requirements, including:

[0029] If the maximum desorption amount of evaporative emissions is equal to the desorption amount required for evaporative emissions and the maximum desorption amount of refueling emissions is equal to the desorption amount required for refueling emissions, then determine the initial fuel evaporative control system as the target fuel evaporative control system;

[0030] If the maximum desorption amount of evaporative emissions is not equal to the desorption amount required for evaporative emissions or the maximum desorption amount of refueling emissions is not equal to the desorption amount required for refueling emissions, then adjust the carbon canister model or the state of the carbon canister solenoid valve of the initial fuel evaporative control system according to the comparison results and the design requirements to obtain the target fuel evaporative control system.

[0031] Further, if the maximum desorption amount of evaporative emissions is not equal to the desorption amount required for evaporative emissions or the maximum desorption amount of refueling emissions is not equal to the desorption amount required for refueling emissions, then adjust the carbon canister model or the state of the carbon canister solenoid valve of the initial fuel evaporative control system according to the comparison results and the design requirements to obtain the target fuel evaporative control system, including:

[0032] If the maximum desorption amount of evaporative emissions is less than the desorption amount required for evaporative emissions or the maximum desorption amount of refueling emissions is less than the desorption amount required for refueling emissions, then increase the carbon canister model to obtain an intermediate fuel evaporative control system, and continue to conduct the first evaporative emission test, the first refueling emission test, the second evaporative emission test, and the second refueling emission test based on the intermediate fuel evaporative control system until the maximum desorption amount of evaporative emissions is not less than the desorption amount required for evaporative emissions and the maximum desorption amount of refueling emissions is not less than the desorption amount required for refueling emissions;

[0033] If the maximum desorption amount of evaporative emissions is greater than the desorption amount required for evaporative emissions and the maximum desorption amount of refueling emissions is greater than the desorption amount required for refueling emissions, then adjust the carbon canister model or the state of the carbon canister solenoid valve of the initial fuel evaporative control system according to the design requirements to obtain the target fuel evaporative control system.

[0034] Further, adjusting the canister model or the state of the canister solenoid valve of the initial fuel evaporation control system according to the design requirements to obtain the target fuel evaporation control system includes:

[0035] When the design requirement is a cost-oriented vehicle, the canister model is reduced to obtain an intermediate fuel evaporation control system, and based on the intermediate fuel evaporation control system, the first evaporation emission test, the first refueling emission test, the second evaporation emission test, and the second refueling emission test are continued until the maximum desorption amount of evaporation emission is not less than the required desorption amount of evaporation emission and the maximum desorption amount of refueling emission is not less than the required desorption amount of refueling emission;

[0036] When the design requirement is a comfort-oriented vehicle, the opening speed, duty ratio, and / or opening condition of the canister solenoid valve are reduced to obtain an intermediate fuel evaporation control system, and based on the intermediate fuel evaporation control system, the first evaporation emission test, the first refueling emission test, the second evaporation emission test, and the second refueling emission test are continued until the maximum desorption amount of evaporation emission is not less than the required desorption amount of evaporation emission and the maximum desorption amount of refueling emission is not less than the required desorption amount of refueling emission;

[0037] When the design requirement is an emission-oriented vehicle, the initial fuel evaporation control system is determined as the target fuel evaporation control system.

[0038] In a second aspect, an embodiment of the present invention further provides a device for determining a fuel evaporation control system, including:

[0039] A first determination module for performing a first evaporation emission test on an initial fuel evaporation control system including an initial canister adsorbed to the critical point and a calibrated canister solenoid valve to determine the maximum desorption amount of evaporation emission of the initial fuel evaporation control system, and performing a first refueling emission test to determine the maximum desorption amount of refueling emission of the initial fuel evaporation control system;

[0040] A second determination module for performing a second evaporation emission test on the initial fuel evaporation control system including an empty initial canister and a closed canister solenoid valve to determine the required desorption amount of evaporation emission, and performing a second refueling emission test to determine the required desorption amount of refueling emission;

[0041] An execution module for respectively comparing the maximum desorption amount of evaporation emission and the required desorption amount of evaporation emission, and the maximum desorption amount of refueling emission and the required desorption amount of refueling emission, and determining the target fuel evaporation control system according to the comparison results and design requirements.

[0042] In a third aspect, an embodiment of the present invention further provides a vehicle, which includes: one or more processors; a storage device for storing one or more programs; a fuel evaporation control system, where the fuel evaporation control system includes a flow meter, and the flow meter is configured to determine the volume of air entering an initial charcoal canister during a high-temperature driving test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system during a first evaporation emission test; and to determine the total volume of air entering the initial charcoal canister during a type-I pre-treatment driving test, a type-I test driving test, and a refueling control system processing driving test during a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system. When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining a fuel evaporation control system as described in any one of the first aspects.

[0043] In a fourth aspect, an embodiment of the present invention further provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the method for determining a fuel evaporation control system as described in any one of the first aspects when executed by a computer processor.

[0044] In a fifth aspect, the present application provides a computer program product, which includes computer instructions. When the computer instructions run on a computer, the computer is caused to execute the method for determining a fuel evaporation control system provided in the first aspect.

[0045] It should be noted that the above computer instructions can be stored in whole or in part on a computer-readable storage medium. Among them, the computer-readable storage medium can be packaged together with the processor of the fuel evaporation control system determination device, or can be separately packaged from the processor of the fuel evaporation control system determination device. The present application does not make any limitations in this regard.

[0046] The descriptions of the second aspect, the third aspect, the fourth aspect, and the fifth aspect in the present application can refer to the detailed description of the first aspect; and the beneficial effects of the descriptions of the second aspect, the third aspect, the fourth aspect, and the fifth aspect can refer to the analysis of the beneficial effects of the first aspect, which will not be elaborated here.

[0047] In the present application, the name of the above fuel evaporation control system determination device does not constitute a limitation on the device or functional module itself. In actual implementation, these devices or functional modules may appear under other names. As long as the functions of each device or functional module are similar to those of the present application and fall within the scope of the claims of the present application and equivalent technologies.

[0048] These aspects or other aspects of the present application will be more clearly understood in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0050] Figure 1 It is a flowchart of a method for determining a fuel evaporation control system provided in the first embodiment of the present invention;

[0051] Figure 2 It is a schematic structural diagram of a fuel evaporation control system of a vehicle provided in the first embodiment of the present invention;

[0052] Figure 3 It is a first evaporation emission test flowchart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention;

[0053] Figure 4 It is a first refueling emission test flowchart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention;

[0054] Figure 5 It is a second evaporation emission test flowchart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention;

[0055] Figure 6 It is a second refueling emission test flowchart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention;

[0056] Figure 7 It is a flowchart of a method for determining a fuel evaporation control system provided in the second embodiment of the present invention;

[0057] Figure 8 It is a desorption efficiency curve graph of an initial charcoal canister in a method for determining a fuel evaporation control system provided in the second embodiment of the present invention;

[0058] Figure 9 It is an implementation flowchart of a method for determining a fuel evaporation control system provided in the second embodiment of the present invention;

[0059] Figure 10 It is a schematic structural diagram of a device for determining a fuel evaporation control system provided in the third embodiment of the present invention;

[0060] Figure 11 It is a schematic structural diagram of a vehicle provided in the fourth embodiment of the present invention. Detailed implementation manners

[0061] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0062] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0063] The terms "first" and "second" in the description of this application and the accompanying drawings are used to distinguish different objects, or to distinguish different treatments of the same object, rather than to describe the specific order of the objects.

[0064] In addition, the terms "including" and "having" mentioned in the description of this application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0065] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operations are completed, but it can also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc. In addition, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0066] It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to give examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0067] In the description of this application, unless otherwise specified, the meaning of "a plurality of" refers to two or more.

[0068] The ability of the fuel evaporation control system of a vehicle mainly depends on the adsorption capacity of the carbon canister and the desorption capacity of the fuel adsorption and desorption control system. The adsorption capacity of the carbon canister is related to the volume and quality of its carbon powder. The stronger the adsorption capacity, the more fuel vapor can be adsorbed during engine shutdown to prevent it from entering the atmosphere and causing pollution. The desorption capacity of the fuel adsorption and desorption control system is related to the control unit's control of the state of the carbon canister solenoid valve. The control unit is used to control the opening, closing, and opening size of the carbon canister solenoid valve. After the carbon canister solenoid valve is opened, the negative pressure generated by the intake manifold or the venturi valve (when the supercharger is working) adsorbs the fuel vapor in the carbon canister into the engine for combustion.

[0069] In the prior art, the adsorption capacity of the carbon canister depends on the selection of the carbon canister by the design engineer. When the design engineer lacks experience, if a carbon canister with too large an adsorption capacity is selected, it will cause design redundancy and increase the vehicle cost; if a carbon canister with too low an adsorption capacity is selected, the evaporative emissions and refueling emissions will not meet the regulatory requirements (Phase VI emission standards, National VI GB18352.6 - 2016). The desorption capacity of the fuel adsorption and desorption control system depends on the experience of the calibration engineer. If the calibration engineer lacks experience and the carbon canister solenoid valve is opened too quickly or too large, it will cause poor engine combustion and thus engine vibration, affecting vehicle comfort; if the opening of the carbon canister solenoid valve is too small, it will cause incomplete desorption of the carbon canister and exceed the evaporative emissions standard.

[0070] Therefore, there is an urgent need for a method to determine the fuel evaporation control system to accurately determine the fuel evaporation control system so that the determined fuel evaporation control system complies with regulations and meets the design requirements.

[0071] The method for determining the fuel evaporation control system disclosed in the embodiments of the present invention will be described in detail below with reference to the drawings and embodiments.

[0072] Embodiment 1

[0073] Figure 1 The following is a flowchart of a method for determining a fuel evaporation control system provided in Embodiment 1 of the present invention. This embodiment is applicable to determining the fuel evaporation control system included in a vehicle so that the fuel evaporation control system complies with regulations and meets the design requirements. This method can be executed by a fuel evaporation control system determination device, as Figure 1 shown, and specifically includes the following steps:

[0074] Step 110: Based on an initial fuel evaporation control system including an initial carbon canister and a calibrated carbon canister solenoid valve, conduct a first evaporative emissions test to determine the maximum desorption amount of evaporative emissions of the initial fuel evaporation control system, and conduct a first refueling emissions test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system.

[0075] Figure 2This is a schematic structural diagram of the fuel evaporation control system of a vehicle provided in the first embodiment of the present invention. As Figure 2 shown, the fuel evaporation control system of the vehicle includes a carbon canister, a fuel tank, a carbon canister solenoid valve, a control unit, an engine, and a flow meter. The fuel vapor generated by the evaporation of fuel in the fuel tank and the fuel vapor generated during refueling will both flow through the pipeline to the carbon canister and be adsorbed by the carbon canister. When the engine is running, the control unit controls the opening of the carbon canister solenoid valve according to the operating conditions of the engine, and uses the negative pressure generated by the engine to suck the vapor adsorbed by the carbon canister into the engine for combustion. The flow meter is used to measure the air flow rate entering the carbon canister from the atmosphere, that is, the desorption flow rate.

[0076] Before the test, the initial carbon canister and a carbon canister solenoid valve with a large flow rate can be selected according to existing experience, and the carbon canister solenoid valve can be calibrated to determine that the opening time of the carbon canister solenoid valve is adjusted to the fastest, the duty cycle is adjusted to the maximum, and the opening condition is relaxed.

[0077] Figure 3 This is the first evaporation emission test flow chart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention. Based on Figure 3 , the first evaporation emission test can be carried out on a vehicle including the initial fuel evaporation control system. The initial fuel evaporation control system includes an initial carbon canister and a calibrated carbon canister solenoid valve. When the first evaporation emission test is in progress, the air volume entering the initial carbon canister during the high-temperature driving test can be determined based on the flow meter; in the initial desorption efficiency curve corresponding to the initial carbon canister, the first desorption mass corresponding to the air volume can be determined, and the maximum desorption amount of evaporation emission can be determined according to the first desorption mass.

[0078] Due to reasons such as test errors and component deviations, the desorption mass during the consistency check may be less than the first desorption mass. Therefore, a certain safety margin needs to be left, and the value obtained by multiplying the first desorption mass by the safety factor is determined as the final maximum desorption mass of evaporation emission.

[0079] Figure 4 This is the first refueling emission test flow chart in a method for determining a fuel evaporation control system provided in the first embodiment of the present invention. Based on Figure 4 , the first refueling emission test can be carried out on a vehicle including the initial fuel evaporation control system. The initial fuel evaporation control system includes an initial carbon canister and a calibrated carbon canister solenoid valve. When the first refueling emission test is in progress, the total air volume entering the initial carbon canister during the type I pretreatment driving test, the type I test driving test, and the refueling control system processing driving test can be determined based on the flow meter; in the initial desorption efficiency curve corresponding to the initial carbon canister, the second desorption mass corresponding to the total air volume can be determined, and the maximum desorption amount of refueling emission can be determined according to the second desorption mass.

[0080] Due to reasons such as test errors and component deviations, the desorption mass during consistency check may be less than the second desorption mass. Therefore, a certain safety margin needs to be reserved, and the value obtained by multiplying the second desorption mass by the safety factor is determined as the final maximum desorption mass of evaporative emissions.

[0081] In the embodiment of the present invention, after selecting the initial charcoal canister, the charcoal canister solenoid valve is calibrated so that the desorption capacity of the fuel adsorption and desorption control system included in the initial fuel evaporative control system reaches the maximum. During the first evaporative emission test, the desorption volume during high-temperature driving test is measured by a flowmeter and then the maximum desorption amount of evaporative emissions is calculated. During the first refueling emission test, the total desorption volume during type I pretreatment driving test, type I test driving test, and refueling control system treatment driving test is measured by a flowmeter and then the maximum desorption amount of refueling emissions is calculated, improving the accuracy of calculating the maximum desorption amount of evaporative emissions and refueling emissions.

[0082] Step 120: Based on the initial fuel evaporative control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conduct a second evaporative emission test to determine the required desorption amount of evaporative emissions, and conduct a second refueling emission test to determine the required desorption amount of refueling emissions.

[0083] Figure 5 It is the flowchart of the second evaporative emission test in a method for determining a fuel evaporative control system provided in Embodiment 1 of the present invention. Based on Figure 5 , the vehicle can be subjected to the second evaporative emission test. When the second evaporative emission test is in progress, after the second fuel drain and 40% refueling are completed, the empty initial charcoal canister is replaced, and the charcoal canister solenoid valve is closed during the high-temperature driving test. After the test is completed, the required desorption amount of evaporative emissions is determined according to the first mass of the initial charcoal canister before the second evaporative emission test and the second mass after completion.

[0084] Figure 6 It is the flowchart of the second refueling emission test in a method for determining a fuel evaporative control system provided in Embodiment 1 of the present invention. Based on Figure 6 , the vehicle can be subjected to the second refueling emission test. When the second refueling emission test is in progress, after the second fuel drain and 40% refueling are completed, the empty initial charcoal canister is replaced, and the charcoal canister solenoid valve is closed during the type I pretreatment driving test, type I test driving test, and refueling control system treatment driving test. After the test is completed, the required desorption amount of refueling emissions is determined according to the first mass of the initial charcoal canister before the second refueling emission test and the third mass after completion.

[0085] In the embodiments of the present invention, an empty initial canister is used to collect the fuel vapor generated by fuel evaporation until the emission ends. During the whole process, the canister solenoid valve is prohibited from opening, and the desorption amount required for evaporation emission is accurately calculated. An empty initial canister is used to collect the fuel vapor generated during the refueling process until the emission ends. During the whole process, the canister solenoid valve is prohibited from opening, and the desorption amount required for refueling emission is accurately calculated.

[0086] Step 130: Compare the maximum desorption amount of evaporation emission and the desorption amount required for evaporation emission, and compare the maximum desorption amount of refueling emission and the desorption amount required for refueling emission respectively. Determine the target fuel evaporation control system according to the comparison results and design requirements.

[0087] Specifically, compare the maximum desorption amount of evaporation emission and the desorption amount required for evaporation emission, and compare the maximum desorption amount of refueling emission and the desorption amount required for refueling emission respectively. The comparison results can determine the capacity of the fuel evaporation control system, and then determine whether the initial fuel evaporation control system is the optimal solution, and determine the next development plan in combination with the design requirements.

[0088] If the maximum desorption amount of evaporation emission is less than the desorption amount required for evaporation emission or the maximum desorption amount of refueling emission is less than the desorption amount required for refueling emission, it indicates that the capacity of the fuel evaporation control system cannot meet the regulatory requirements, and the model of the canister needs to be re-determined to select a canister with stronger capacity; if the maximum desorption amount of evaporation emission is equal to the desorption amount required for evaporation emission and the maximum desorption amount of refueling emission is equal to the desorption amount required for refueling emission, it indicates that the capacity of the fuel evaporation control system just meets the regulatory requirements, and the initial canister included in the initial fuel evaporation control system is the canister with the optimal cost, and the state of the calibrated canister solenoid valve is the optimal state. If the maximum desorption amount of evaporation emission is greater than the desorption amount required for evaporation emission or the maximum desorption amount of refueling emission is greater than the desorption amount required for refueling emission, it indicates that the capacity of the fuel evaporation control system has redundancy, and the next development plan can be determined according to the design requirements. For example, if the design requirement is to give priority to cost, the model of the canister can be re-determined to select a canister with weaker capacity to save cost; if the design requirement is to give priority to vehicle comfort, the state of the solenoid valve can be appropriately adjusted in the comfort-sensitive area; if the design requirement is to give priority to the emission performance of the vehicle, the initial fuel evaporation control system is determined as the target fuel evaporation control system.

[0089] In the embodiments of the present invention, on the premise that both the maximum desorption amount of evaporation emission and the maximum desorption amount of refueling emission are not less than the corresponding required desorption amounts, if either the maximum desorption amount of evaporation emission or the maximum desorption amount of refueling emission is equal to the corresponding required desorption amount, it can be determined that this initial canister is the canister with the optimal cost. If it is not the optimal cost solution, the model of the canister can be re-determined until the optimal cost solution is found, so as to reduce the vehicle cost.

[0090] A method for determining a fuel evaporation control system provided in a first embodiment of the present invention includes: based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, performing a first evaporative emission test to determine a maximum desorption amount of evaporative emissions of the initial fuel evaporation control system, and performing a first refueling emission test to determine a maximum desorption amount of refueling emissions of the initial fuel evaporation control system; based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, performing a second evaporative emission test to determine a required desorption amount of evaporative emissions, and performing a second refueling emission test to determine a required desorption amount of refueling emissions; comparing the maximum desorption amount of evaporative emissions with the required desorption amount of evaporative emissions, as well as the maximum desorption amount of refueling emissions with the required desorption amount of refueling emissions, respectively, and determining a target fuel evaporation control system according to the comparison results and design requirements. The above technical scheme can firstly perform a first evaporative emission test and a first refueling emission test on the vehicle based on a calibrated charcoal canister solenoid valve to respectively determine the maximum evaporative emission desorption amount and the maximum refueling emission desorption amount of the initial fuel evaporation control system, and can also perform a second evaporative emission test and a second refueling emission test on the vehicle based on a closed charcoal canister solenoid valve to respectively determine the evaporative emission demand desorption amount and the refueling emission demand desorption amount, and then respectively compare the maximum evaporative emission desorption amount and the evaporative emission demand desorption amount, as well as the maximum refueling emission desorption amount and the refueling emission demand desorption amount, and determine the target fuel evaporation control system based on the comparison results and design requirements, and then determine the model of the charcoal canister and the state of the charcoal canister solenoid valve, thereby realizing the accurate determination of the fuel evaporation control system in combination with the charcoal canister and the charcoal canister solenoid valve, so that the determined fuel evaporation control system complies with regulations and meets design requirements.

[0091] Embodiment 2

[0092] Figure 7 This is a flow chart of a method for determining a fuel evaporation control system provided in the second embodiment of the present invention. This embodiment is specific based on the above embodiment. Figure 7 As shown, in this embodiment, the method may further include:

[0093] Step 710: Determine an initial desorption efficiency curve corresponding to the initial carbon canister.

[0094] Specifically, before conducting the test, the initial carbon canister can be selected based on existing experience. To prevent the carbon canister from being saturated and causing vapor leakage in subsequent evaporative emission and refueling emission tests, a carbon canister with a larger volume can be selected as the initial carbon canister. Of course, after determining the initial carbon canister, the desorption efficiency curve of the initial carbon canister can be measured and plotted through experiments.

[0095] Figure 8 A desorption efficiency curve diagram of an initial carbon canister in a method for determining a fuel evaporation control system provided in the second embodiment of the present invention, such asFigure 8 As shown, the horizontal axis is the desorption volume, i.e., the volume of air flowing through the charcoal canister, and the vertical axis is the desorption weight, i.e., the mass of fuel vapor desorbed from the saturated charcoal canister (the charcoal canister adsorbed to the critical point). The desorption ratio is the ratio of the desorbed mass to the total mass of the vapor in the saturated charcoal canister. The desorption ratio and the desorption volume do not show a linear relationship. The desorption ratio will increase rapidly with the increase of the desorption volume in the initial stage, and the increasing speed will become slower and slower later. The desorption efficiency curves of different charcoal canisters will be different.

[0096] In practical applications, a saturated charcoal canister can be made according to the national VI regulations method. The charcoal canister is flushed with air at a certain flow rate. As the volume of air entering the charcoal canister continuously increases, the mass of the vapor in the charcoal canister will become lower and lower, and the desorption ratio will become higher and higher. Record the desorption weight corresponding to different desorption volumes until the charcoal canister is completely desorbed, and the desorption efficiency curve of the charcoal canister can be plotted.

[0097] Step 720: Based on the initial fuel evaporation control system including the initial charcoal canister and the calibrated charcoal canister solenoid valve, conduct the first evaporation emission test to determine the maximum desorption amount of evaporation emission of the initial fuel evaporation control system, and conduct the first refueling emission test to determine the maximum desorption amount of refueling emission of the initial fuel evaporation control system.

[0098] Before conducting the test, a large-aperture charcoal canister desorption pipeline can also be selected to increase the maximum desorption flow rate of the fuel adsorption and desorption control system. A large-flow charcoal canister solenoid valve can also be selected to increase the maximum desorption amount of the fuel adsorption and desorption control system. Of course, the charcoal canister solenoid valve can also be calibrated through the control unit. Specifically, on the premise of not affecting the vehicle drivability and comfort, the opening time of the charcoal canister solenoid valve can be adjusted to the fastest, the duty ratio can be adjusted to the maximum, and the opening condition can be relaxed, so that the working conditions for the charcoal canister solenoid valve to open are more, and the maximum desorption amount at the time of opening is larger. After adjustment, different working conditions need to be verified on the vehicle to ensure that the vehicle drivability and comfort will not deteriorate. In addition, on the premise of ensuring that the diagnosis of the fuel evaporation control system can be completed normally, the time allocation for fuel self-learning can also be adjusted to the minimum through the control unit to increase the working time of the charcoal canister solenoid valve and thus increase the maximum desorption amount.

[0099] In one implementation, step 720 may specifically include:

[0100] When conducting the first evaporation emission test based on the preset process, determine the volume of air entering the initial charcoal canister during the high-temperature driving test through the flow meter included in the initial fuel evaporation control system; in the initial desorption efficiency curve, determine the first desorption mass corresponding to the air volume, and determine the maximum desorption amount of evaporation emission according to the first desorption mass;

[0101] When conducting the first refueling emission test based on a preset process, the total volume of air entering the initial carbon canister during the type-I pretreatment driving test, the type-I test driving test, and the refueling control system processing driving test is determined by the flowmeter included in the initial fuel evaporation control system; in the initial desorption efficiency curve, the second desorption mass corresponding to the total volume of air is determined, and the maximum desorption amount for refueling emissions is determined based on the second desorption mass.

[0102] Specifically, as Figure 3 shown, first, a pretreatment driving test is conducted. Next, the initial carbon canister is processed to make it a saturated carbon canister. After soaking the vehicle at a high temperature for 12 - 36 hours, a high-temperature driving test is carried out. Furthermore, the volume of air V1 entering the initial carbon canister during the high-temperature driving test can be determined based on the flowmeter. In the initial desorption efficiency curve corresponding to the initial carbon canister, the first desorption mass m10 corresponding to the air volume V1 is determined, and the maximum desorption amount m1 for evaporative emissions is determined based on the first desorption mass m10. Of course, considering reasons such as test errors and component deviations, the final maximum desorption mass m1 for evaporative emissions can be determined as m1 = m10 * C. C can be a safety factor, and based on experience, C can be determined to be between 0.7 and 0.9. In practical applications, C can be taken as 0.8.

[0103] In practical applications, if the initial carbon canister cannot be reselected, the maximum desorption mass m1 for evaporative emissions can be determined by weighing. The mass A1 of the carbon canister can be measured before the high-temperature driving test, and the mass A2 of the desorbed carbon canister can be measured after the high-temperature driving test. Therefore, m10 = A1 - A2 can be determined. Of course, if the initial carbon canister needs to be reselected, the maximum desorption mass m10 for evaporative emissions is still calculated based on the air volume V1, and there is no need to conduct a new high-temperature driving test.

[0104] As Figure 4 shown, first, a pretreatment driving test is conducted. Next, after processing the initial carbon canister to make it a saturated carbon canister, a type-I pretreatment driving test is carried out. After soaking the vehicle for 12 - 36 hours, the type-I test driving test and the refueling control system processing driving test are continued. Furthermore, the total volume of air V2 entering the initial carbon canister during the type-I pretreatment driving test, the type-I test driving test, and the refueling control system processing driving test can be determined based on the flowmeter. In the initial desorption efficiency curve corresponding to the initial carbon canister, the second desorption mass m20 corresponding to the air volume V2 is determined, and the maximum desorption amount m2 for refueling emissions is determined based on the second desorption mass m20. Similarly, considering reasons such as test errors and component deviations, the final maximum desorption amount m2 for refueling emissions can be determined as m2 = m20 * C. C can also be taken as 0.8.

[0105] It should be noted that during the first evaporative emission test and the first refueling emission test, the fuel evaporation control system may include an auxiliary charcoal canister communicating with the atmosphere, and the auxiliary charcoal canister is used to determine whether the initial charcoal canister is adsorbed to the critical point. Since the auxiliary charcoal canister communicates with the atmosphere, the auxiliary charcoal canister is a saturated charcoal canister. By comparing the masses of the auxiliary charcoal canister and the initial charcoal canister, after determining that the mass of the initial charcoal canister is equal to the mass of the auxiliary charcoal canister, it can be determined that the initial charcoal canister is adsorbed to the critical point.

[0106] Step 730: Based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conduct a second evaporative emission test to determine the evaporative emission demand desorption amount, and conduct a second refueling emission test to determine the refueling emission demand desorption amount.

[0107] In one implementation, step 730 may specifically include:

[0108] Determine the first mass of the initial charcoal canister before the second evaporative emission test; conduct the second evaporative emission test, replace the initial charcoal canister after the second fuel discharge and 40% refueling, and close the charcoal canister solenoid valve during the high-temperature driving test; determine the second mass of the initial charcoal canister after the second evaporative emission test is completed; determine the evaporative emission demand desorption amount based on the first mass and the second mass;

[0109] Determine the first mass of the initial charcoal canister before the second refueling emission test; conduct the second refueling emission test, replace the initial charcoal canister after the second fuel discharge and 40% refueling, and close the charcoal canister solenoid valve during the type-I pretreatment driving test, the type-I test driving test, and the refueling control system processing driving test; determine the third mass of the initial charcoal canister after the second refueling emission test is completed; determine the refueling emission demand desorption amount based on the first mass and the third mass.

[0110] Specifically, as Figure 5 shown, first conduct the first fuel discharge and 40% refueling, soak the vehicle for 6 - 36 hours and then conduct the pretreatment driving test. Next, conduct the second fuel discharge and 40% refueling. After the second fuel discharge and 40% refueling, replace the empty initial charcoal canister and determine the first mass M10 of the initial charcoal canister. After high-temperature soaking the vehicle for 12 - 36 hours, conduct the high-temperature driving test. Of course, during the high-temperature driving test, the charcoal canister solenoid valve can be closed by the control unit, and then conduct the hot soak test. After normal-temperature soaking the vehicle for 6 - 36 hours, conduct the two-day day-night emission test and determine the second mass M11 of the initial charcoal canister. Further, the evaporative emission demand desorption amount M1 = M11 - M10 can be determined.

[0111] As Figure 6As shown, first, perform the first fuel discharge and add 40% fuel. After soaking the vehicle for 6 - 36 hours, conduct a pre - treatment driving test. Next, perform the second fuel discharge and add 40% fuel. After completing the second fuel discharge and adding 40% fuel, replace the empty initial charcoal canister and determine the first mass M10 of the initial charcoal canister. Close the charcoal canister solenoid valve through the control unit to conduct a type - I pre - treatment driving test. After soaking the vehicle for 12 - 36 hours, keep the charcoal canister solenoid valve closed to conduct a type - I test driving test and a fuel - filling control system treatment driving test. Then, disconnect the connection between the charcoal canister and the fuel tank, conduct a fuel discharge and add 10% fuel. After soaking the vehicle for 6 - 36 hours, reconnect the charcoal canister and the fuel tank, conduct a closed - chamber fuel - filling emission test and determine the third mass M21 of the initial charcoal canister. Further, the fuel - filling emission demand desorption amount M2 = M21 - M10 can be determined.

[0112] Step 740: Compare the maximum evaporative emission desorption amount and the evaporative emission demand desorption amount, and the maximum fuel - filling emission desorption amount and the fuel - filling emission demand desorption amount respectively. Determine the target fuel evaporative control system according to the comparison results and the design requirements.

[0113] In one implementation, step 740 may specifically include:

[0114] If the maximum evaporative emission desorption amount is equal to the evaporative emission demand desorption amount and the maximum fuel - filling emission desorption amount is equal to the fuel - filling emission demand desorption amount, then determine the initial fuel evaporative control system as the target fuel evaporative control system; if the maximum evaporative emission desorption amount is not equal to the evaporative emission demand desorption amount or the maximum fuel - filling emission desorption amount is not equal to the fuel - filling emission demand desorption amount, then adjust the charcoal canister model or the state of the charcoal canister solenoid valve of the initial fuel evaporative control system according to the comparison results and the design requirements to obtain the target fuel evaporative control system.

[0115] Further, if the maximum evaporative emission desorption amount is not equal to the evaporative emission demand desorption amount or the maximum fuel - filling emission desorption amount is not equal to the fuel - filling emission demand desorption amount, then adjusting the charcoal canister model or the state of the charcoal canister solenoid valve of the initial fuel evaporative control system according to the comparison results and the design requirements to obtain the target fuel evaporative control system includes:

[0116] If the maximum desorption amount of the evaporative emissions is less than the required desorption amount of the evaporative emissions or the maximum desorption amount of the refueling emissions is less than the required desorption amount of the refueling emissions, increase the canister model to obtain an intermediate fuel evaporative control system, and continue to perform the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; if the maximum desorption amount of the evaporative emissions is greater than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is greater than the required desorption amount of the refueling emissions, adjust the canister model or the canister solenoid valve state of the initial fuel evaporative control system according to the design requirements to obtain the target fuel evaporative control system.

[0117] Further, adjusting the canister model or the canister solenoid valve state of the initial fuel evaporative control system according to the design requirements to obtain the target fuel evaporative control system includes:

[0118] When the design requirement is a cost-type vehicle, reduce the canister model to obtain an intermediate fuel evaporative control system, and continue to perform the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; when the design requirement is a comfort-type vehicle, reduce the opening speed, duty cycle, and / or opening condition of the canister solenoid valve to obtain an intermediate fuel evaporative control system, and continue to perform the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; when the design requirement is an emission-type vehicle, determine the initial fuel evaporative control system as the target fuel evaporative control system.

[0119] Figure 9 FIG. is a flowchart for implementing a method for determining a fuel evaporative control system according to Embodiment 2 of the present invention, and one implementation manner is exemplarily given. As Figure 9 shown,

[0120] First, the model of the initial charcoal canister can be determined, and the charcoal canister solenoid valve can be calibrated through the control unit to maximize the desorption capacity of the fuel evaporation control system. Conduct the first evaporation emission test and the first refueling emission test on the initial fuel evaporation control system initially including the initial charcoal canister and the calibrated charcoal canister solenoid valve to respectively determine the maximum desorption amount m1 of evaporation emissions and the maximum desorption amount m2 of refueling emissions of the initial fuel evaporation control system. Conduct the second evaporation emission test and the second refueling emission test on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve to respectively determine the desorption amount M1 required for evaporation emissions and the desorption amount M2 required for refueling emissions. Compare the maximum desorption amount m1 of evaporation emissions with the desorption amount M1 required for evaporation emissions, and the maximum desorption amount m2 of refueling emissions with the desorption amount M2 required for refueling emissions respectively. If m1 < M1 or m2 < M2, it is determined that the capacity of the fuel evaporation control system cannot meet the regulations, and it is necessary to return to re-determine the model of the initial charcoal canister until the maximum desorption amount of evaporation emissions is not less than the desorption amount required for evaporation emissions and the maximum desorption amount of refueling emissions is not less than the desorption amount required for refueling emissions; if m1 = M1 or m2 = M2, it is determined that the capacity of the fuel evaporation control system just meets the regulations, and the current plan is the cost-optimal plan, and the initial fuel evaporation control system is determined as the target fuel evaporation control system; if m1 > M1 and m2 > M2, it is determined that there is redundancy in the capacity of the fuel evaporation control system, and the next development plan can be determined according to the design requirements.

[0121] As mentioned above, when the design requirement is a cost-type vehicle, it is necessary to return to re-determine the model of the initial charcoal canister; when the design requirement is a comfort-type vehicle, the opening speed, duty cycle, and / or opening conditions of the charcoal canister solenoid valve are reduced through the control unit; when the design requirement is an emission-type vehicle, the initial fuel evaporation control system is determined as the target fuel evaporation control system.

[0122] A method for determining a fuel evaporation control system provided in Embodiment 2 of the present invention includes: determining an initial desorption efficiency curve corresponding to an initial carbon canister; based on an initial fuel evaporation control system including the initial carbon canister and a calibrated canister solenoid valve, conducting a first evaporative emission test to determine the maximum desorption amount of evaporative emissions of the initial fuel evaporation control system, and conducting a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system; based on the initial fuel evaporation control system including the initial carbon canister and the closed canister solenoid valve, conducting a second evaporative emission test to determine the desorption amount required for evaporative emissions, and conducting a second refueling emission test to determine the desorption amount required for refueling emissions; respectively comparing the maximum desorption amount of evaporative emissions and the desorption amount required for evaporative emissions, and the maximum desorption amount of refueling emissions and the desorption amount required for refueling emissions, and determining a target fuel evaporation control system according to the comparison results and design requirements. In the above technical solution, after determining the initial desorption efficiency curve corresponding to the initial carbon canister, first, a first evaporative emission test and a first refueling emission test can be conducted on the vehicle based on the calibrated canister solenoid valve to respectively determine the maximum desorption amount of evaporative emissions and the maximum desorption amount of refueling emissions of the initial fuel evaporation control system. Also, a second evaporative emission test and a second refueling emission test can be conducted on the vehicle based on the closed canister solenoid valve to respectively determine the desorption amount required for evaporative emissions and the desorption amount required for refueling emissions. Furthermore, the maximum desorption amount of evaporative emissions and the desorption amount required for evaporative emissions, and the maximum desorption amount of refueling emissions and the desorption amount required for refueling emissions can be respectively compared, and a target fuel evaporation control system can be determined according to the comparison results and design requirements. Then, the model of the carbon canister and the state of the canister solenoid valve can be determined, realizing the accurate determination of the fuel evaporation control system in combination with the carbon canister and the canister solenoid valve, so that the determined fuel evaporation control system complies with regulations and meets design requirements.

[0123] In addition, when ensuring that the cost, emission performance, and comfort all meet the standards, a target fuel evaporation control system most suitable for this design scheme can be determined according to the design requirements.

[0124] Embodiment 3

[0125] Figure 10 The structural schematic diagram of a device for determining a fuel evaporation control system provided in Embodiment 3 of the present invention. This device can be applicable to determining the fuel evaporation control system included in a vehicle, so that the fuel evaporation control system complies with regulations and meets design requirements. This device can be implemented by software and / or hardware and is generally integrated in the vehicle.

[0126] As Figure 10 shown, this device includes:

[0127] The first determination module 1010 is configured to perform a first evaporation emission test based on an initial fuel evaporation control system including an initial charcoal canister adsorbed to the critical point and a calibrated charcoal canister solenoid valve to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and perform a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system;

[0128] The second determination module 1020 is configured to perform a second evaporation emission test based on the initial fuel evaporation control system including an empty initial charcoal canister and a closed charcoal canister solenoid valve to determine the desorption amount of evaporation emission requirements, and perform a second refueling emission test to determine the desorption amount of refueling emission requirements;

[0129] The execution module 1030 is configured to compare the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements respectively, and determine a target fuel evaporation control system according to the comparison results and design requirements.

[0130] A device for determining a fuel evaporation control system provided in the third embodiment performs a first evaporation emission test based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and performs a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system; performs a second evaporation emission test based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve to determine the desorption amount of evaporation emission requirements, and performs a second refueling emission test to determine the desorption amount of refueling emission requirements; compares the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements respectively, and determines a target fuel evaporation control system according to the comparison results and design requirements. The above technical solution can first perform a first evaporation emission test and a first refueling emission test on the vehicle based on the calibrated charcoal canister solenoid valve to respectively determine the maximum desorption amount of evaporation emissions and the maximum desorption amount of refueling emissions of the initial fuel evaporation control system, and can also perform a second evaporation emission test and a second refueling emission test on the vehicle based on the closed charcoal canister solenoid valve to respectively determine the desorption amount of evaporation emission requirements and the desorption amount of refueling emission requirements, and then can compare the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements respectively, and determine a target fuel evaporation control system according to the comparison results and design requirements, and then determine the model of the charcoal canister and the state of the charcoal canister solenoid valve, realizing the accurate determination of the fuel evaporation control system in combination with the charcoal canister and the charcoal canister solenoid valve, so that the determined fuel evaporation control system complies with regulations and meets the design requirements.

[0131] Based on the above embodiments, the device further includes:

[0132] The desorption efficiency curve determination module is used to determine the initial desorption efficiency curve corresponding to the initial carbon canister.

[0133] Based on the above embodiments, the first determination module 1010 is specifically configured to:

[0134] When performing the first evaporative emission test based on a preset process, determine the air volume entering the initial carbon canister during the high-temperature driving test through the flowmeter included in the initial fuel evaporation control system; in the initial desorption efficiency curve, determine the first desorption mass corresponding to the air volume, and determine the maximum desorption amount for the evaporative emission based on the first desorption mass;

[0135] When performing the first refueling emission test based on a preset process, determine the total air volume entering the initial carbon canister during the type I pretreatment driving test, the type I test driving test, and the refueling control system processing driving test through the flowmeter included in the initial fuel evaporation control system; in the initial desorption efficiency curve, determine the second desorption mass corresponding to the total air volume, and determine the maximum desorption amount for the refueling emission based on the second desorption mass.

[0136] Based on the above embodiments, the second determination module 1020 is specifically configured to:

[0137] Determine the first mass of the initial carbon canister before the second evaporative emission test; perform the second evaporative emission test, replace the initial carbon canister after the second fuel drain and 40% refueling, and close the carbon canister solenoid valve during the high-temperature driving test; determine the second mass of the initial carbon canister after the second evaporative emission test is completed; determine the required desorption amount for the evaporative emission based on the first mass and the second mass;

[0138] Determine the first mass of the initial carbon canister before the second refueling emission test; perform the second refueling emission test, replace the initial carbon canister after the second fuel drain and 40% refueling, and close the carbon canister solenoid valve during the type I pretreatment driving test, the type I test driving test, and the refueling control system processing driving test; determine the third mass of the initial carbon canister after the second refueling emission test is completed; determine the required desorption amount for the refueling emission based on the first mass and the third mass.

[0139] Based on the above embodiments, the execution module 1030 is specifically configured to:

[0140] If the maximum evaporation emission desorption amount is equal to the evaporation emission required desorption amount and the maximum refueling emission desorption amount is equal to the refueling emission required desorption amount, then determine the initial fuel evaporation control system as the target fuel evaporation control system; if the maximum evaporation emission desorption amount is not equal to the evaporation emission required desorption amount or the maximum refueling emission desorption amount is not equal to the refueling emission required desorption amount, then adjust the canister model or the canister solenoid valve state of the initial fuel evaporation control system according to the comparison result and the design requirements to obtain the target fuel evaporation control system.

[0141] Further, if the maximum evaporation emission desorption amount is not equal to the evaporation emission required desorption amount or the maximum refueling emission desorption amount is not equal to the refueling emission required desorption amount, then adjusting the canister model or the canister solenoid valve state of the initial fuel evaporation control system according to the comparison result and the design requirements to obtain the target fuel evaporation control system includes:

[0142] If the maximum evaporation emission desorption amount is less than the evaporation emission required desorption amount or the maximum refueling emission desorption amount is less than the refueling emission required desorption amount, then increase the canister model to obtain an intermediate fuel evaporation control system, and continue to perform the first evaporation emission test, the first refueling emission test, the second evaporation emission test, and the second refueling emission test based on the intermediate fuel evaporation control system until the maximum evaporation emission desorption amount is not less than the evaporation emission required desorption amount and the maximum refueling emission desorption amount is not less than the refueling emission required desorption amount; if the maximum evaporation emission desorption amount is greater than the evaporation emission required desorption amount and the maximum refueling emission desorption amount is greater than the refueling emission required desorption amount, then adjust the canister model or the canister solenoid valve state of the initial fuel evaporation control system according to the design requirements to obtain the target fuel evaporation control system.

[0143] Even further, adjusting the canister model or the canister solenoid valve state of the initial fuel evaporation control system according to the design requirements to obtain the target fuel evaporation control system includes:

[0144] When the design requirement is a cost-oriented vehicle, the canister model is adjusted downwards to obtain an intermediate fuel evaporation control system, and based on the intermediate fuel evaporation control system, the first evaporation emission test, the first refueling emission test, the second evaporation emission test, and the second refueling emission test are continued until the maximum desorption amount of the evaporation emission is not less than the required desorption amount of the evaporation emission and the maximum desorption amount of the refueling emission is not less than the required desorption amount of the refueling emission; when the design requirement is a comfort-oriented vehicle, the opening speed, duty cycle, and / or opening condition of the canister solenoid valve are reduced to obtain an intermediate fuel evaporation control system, and based on the intermediate fuel evaporation control system, the first evaporation emission test, the first refueling emission test, the second evaporation emission test, and the second refueling emission test are continued until the maximum desorption amount of the evaporation emission is not less than the required desorption amount of the evaporation emission and the maximum desorption amount of the refueling emission is not less than the required desorption amount of the refueling emission; when the design requirement is an emission-oriented vehicle, the initial fuel evaporation control system is determined as the target fuel evaporation control system.

[0145] The fuel evaporation control system determination device provided by the embodiments of the present invention can execute the fuel evaporation control system determination method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0146] It should be noted that in the embodiments of the above-mentioned fuel evaporation control system determination device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of mutual distinction and do not limit the protection scope of the present invention.

[0147] Embodiment Four

[0148] Figure 11 It is a schematic structural diagram of a vehicle provided by Embodiment Four of the present invention. Figure 11 It shows a block diagram of an exemplary vehicle 11 suitable for implementing the embodiments of the present invention. Figure 11 The shown vehicle 11 is only an example and should not bring any limitation to the functions and usage scope of the embodiments of the present invention.

[0149] As Figure 11 shown, the vehicle 11 is presented in the form of a general-purpose computing electronic device. The components of the vehicle 11 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 connecting different system components (including the system memory 28 and the processing unit 16).

[0150] The vehicle 11 further includes as Figure 2The fuel evaporation control system shown, the fuel evaporation control system includes a flow meter, the flow meter is used to determine the air volume entering the initial carbon canister during a high-temperature driving test when conducting a first evaporative emission test, so as to determine the maximum desorption amount of evaporative emissions of the initial fuel evaporation control system; when conducting a first refueling emission test, determine the total air volume entering the initial carbon canister during a type I pretreatment driving test, a type I test driving test, and a refueling control system treatment driving test, so as to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system.

[0151] Bus 18 represents one or more of several types of bus architectures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the multiple bus architectures. By way of example, these architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

[0152] Vehicle 11 typically includes a variety of computer system readable media. These media can be any available media accessible by vehicle 11, including volatile and non-volatile media, removable and non-removable media.

[0153] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Vehicle 11 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 11 not shown, commonly referred to as a "hard disk drive"). Although Figure 11 not shown in the figure, a disk drive for reading and writing removable non-volatile disks (such as "floppy disks") and an optical disk drive for reading and writing removable non-volatile optical disks (such as CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 through one or more data media interfaces. System memory 28 may include at least one program product having a set (such as at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0154] A program / utilities 40 having a set (at least one) of program modules 42 can be stored in, for example, the system memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment. The program modules 42 generally execute the functions and / or methods in the embodiments described in the present invention.

[0155] The vehicle 11 can also communicate with one or more external devices 14 (such as a keyboard, a pointing device, a display 24, etc.), and can also communicate with one or more devices that enable a user to interact with the vehicle 11, and / or communicate with any device that enables the vehicle 11 to communicate with one or more other computing devices (such as a network card, a modem, etc.). Such communication can be carried out through the input / output (I / O) interface 22. Moreover, the vehicle 11 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 20. As Figure 11 shown, the network adapter 20 communicates with other modules of the vehicle 11 through the bus 18. It should be understood that although Figure 11 not shown in the figure, other hardware and / or software modules can be used in combination with the vehicle 11, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0156] The processing unit 16 executes various functional applications and page displays by running programs stored in the system memory 28. For example, it implements the method for determining a fuel evaporation control system provided in the embodiments of the present invention. The method includes:

[0157] Based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, a first evaporation emission test is carried out to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and a first refueling emission test is carried out to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system;

[0158] Based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, a second evaporation emission test is carried out to determine the desorption amount of evaporation emission requirements, and a second refueling emission test is carried out to determine the desorption amount of refueling emission requirements;

[0159] Compare the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements respectively. According to the comparison results and design requirements, a target fuel evaporation control system is determined.

[0160] Of course, those skilled in the art can understand that the processor can also implement the technical solution of the fuel evaporation control system determination method provided in any embodiment of the present invention.

[0161] Embodiment 5

[0162] Embodiment 5 of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements, for example, the fuel evaporation control system determination method provided in the present embodiment. The method includes:

[0163] Based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, perform a first evaporative emissions test to determine the maximum desorption amount of evaporative emissions of the initial fuel evaporation control system, and perform a first refueling emissions test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system;

[0164] Based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, perform a second evaporative emissions test to determine the desorption amount of evaporative emissions demand, and perform a second refueling emissions test to determine the desorption amount of refueling emissions demand;

[0165] Compare the maximum desorption amount of evaporative emissions and the desorption amount of evaporative emissions demand, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emissions demand respectively, and determine the target fuel evaporation control system according to the comparison results and design requirements.

[0166] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0167] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0168] The program code contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0169] The computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0170] Those of ordinary skill in the art should understand that the various modules or steps of the present invention described above may be implemented using a general-purpose computing device. They may be concentrated on a single computing device or distributed across a network composed of multiple computing devices. Optionally, they may be implemented using program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0171] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for determining a fuel evaporation control system, characterized in that, it includes: Based on an initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, conduct a first evaporation emission test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system, and conduct a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system; Based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conduct a second evaporation emission test to determine the desorption amount of evaporation emission requirements, and conduct a second refueling emission test to determine the desorption amount of refueling emission requirements; Compare the maximum desorption amount of evaporation emissions and the desorption amount of evaporation emission requirements, and the maximum desorption amount of refueling emissions and the desorption amount of refueling emission requirements respectively, and determine the target fuel evaporation control system according to the comparison results and design requirements; Based on the initial fuel evaporation control system including the initial charcoal canister and the closed charcoal canister solenoid valve, conducting a second evaporation emission test to determine the desorption amount of evaporation emission requirements includes: Determine the first mass of the initial charcoal canister before the second evaporation emission test is carried out; Conduct the second evaporation emission test, replace the initial charcoal canister after the second fuel discharge and 40% refueling are completed, and close the charcoal canister solenoid valve during the high-temperature driving test; Determine the second mass of the initial charcoal canister after the second evaporation emission test is completed; Determine the desorption amount of evaporation emission requirements according to the first mass and the second mass.

2. The method for determining a fuel evaporation control system according to claim 1, characterized in that, Before conducting a first evaporation emission test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system and a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system based on the initial fuel evaporation control system including an initial charcoal canister and a calibrated charcoal canister solenoid valve, it further includes: Determine the initial desorption efficiency curve corresponding to the initial charcoal canister.

3. The method for determining a fuel evaporation control system according to claim 2, characterized in that, Based on the initial fuel evaporation control system including the initial charcoal canister and the calibrated charcoal canister solenoid valve, conducting a first evaporation emission test to determine the maximum desorption amount of evaporation emissions of the initial fuel evaporation control system includes: When conducting the first evaporation emission test based on a preset process, determine the air volume entering the initial charcoal canister during the high-temperature driving test through the flow meter included in the initial fuel evaporation control system; In the initial desorption efficiency curve, determine the first desorption mass corresponding to the air volume, and determine it as the maximum desorption amount of evaporation emissions according to the first desorption mass.

4. The method for determining a fuel evaporation control system according to claim 2, characterized in that, Based on the initial fuel evaporation control system including the initial charcoal canister and the calibrated charcoal canister solenoid valve, conducting a first refueling emission test to determine the maximum desorption amount of refueling emissions of the initial fuel evaporation control system includes: When conducting the first refueling emission test based on a preset process, determine the total volume of air entering the initial carbon canister during the type I pretreatment driving test, the type I test driving test, and the refueling control system processing driving test through the flowmeter included in the initial fuel evaporation control system; In the initial desorption efficiency curve, determine the second desorption mass corresponding to the total volume of air, and determine the maximum desorption amount for refueling emissions based on the second desorption mass.

5. The method for determining a fuel evaporation control system according to claim 1, wherein, Based on the initial fuel evaporation control system including the initial carbon canister and the closed carbon canister solenoid valve, conduct a second refueling emission test to determine the desorption amount required for refueling emissions, including: Determine the first mass of the initial carbon canister before the second refueling emission test is conducted; Conduct the second refueling emission test, replace the initial carbon canister after the second fuel discharge and 40% refueling are completed, and close the carbon canister solenoid valve during the type I pretreatment driving test, the type I test driving test, and the refueling control system processing driving test; Determine the third mass of the initial carbon canister after the second refueling emission test is completed; Determine the desorption amount required for refueling emissions based on the first mass and the third mass.

6. The method for determining a fuel evaporation control system according to claim 1, wherein, Compare the maximum desorption amount for evaporation emissions and the desorption amount required for evaporation emissions, and the maximum desorption amount for refueling emissions and the desorption amount required for refueling emissions respectively. Determine the target fuel evaporation control system according to the comparison results and design requirements, including: If the maximum desorption amount for evaporation emissions is equal to the desorption amount required for evaporation emissions and the maximum desorption amount for refueling emissions is equal to the desorption amount required for refueling emissions, determine the initial fuel evaporation control system as the target fuel evaporation control system; If the maximum desorption amount for evaporation emissions is not equal to the desorption amount required for evaporation emissions or the maximum desorption amount for refueling emissions is not equal to the desorption amount required for refueling emissions, adjust the carbon canister model or the state of the carbon canister solenoid valve of the initial fuel evaporation control system according to the comparison results and the design requirements to obtain the target fuel evaporation control system.

7. The method for determining a fuel evaporation control system according to claim 6, wherein, If the maximum desorption amount for evaporation emissions is not equal to the desorption amount required for evaporation emissions or the maximum desorption amount for refueling emissions is not equal to the desorption amount required for refueling emissions, adjust the carbon canister model or the state of the carbon canister solenoid valve of the initial fuel evaporation control system according to the comparison results and the design requirements to obtain the target fuel evaporation control system, including: If the maximum desorption amount of the evaporative emissions is less than the required desorption amount of the evaporative emissions or the maximum desorption amount of the refueling emissions is less than the required desorption amount of the refueling emissions, increase the canister model to obtain an intermediate fuel evaporative control system, and continue to conduct the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; If the maximum desorption amount of the evaporative emissions is greater than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is greater than the required desorption amount of the refueling emissions, adjust the canister model or the canister solenoid valve state of the initial fuel evaporative control system according to the design requirements to obtain the target fuel evaporative control system.

8. The method for determining a fuel evaporative control system according to claim 7, wherein, Adjusting the canister model or the canister solenoid valve state of the initial fuel evaporative control system according to the design requirements to obtain the target fuel evaporative control system includes: When the design requirement is a cost-type vehicle, reduce the canister model to obtain an intermediate fuel evaporative control system, and continue to conduct the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; When the design requirement is a comfort-type vehicle, reduce the opening speed, duty cycle, and / or opening condition of the canister solenoid valve to obtain an intermediate fuel evaporative control system, and continue to conduct the first evaporative emissions test, the first refueling emissions test, the second evaporative emissions test, and the second refueling emissions test based on the intermediate fuel evaporative control system until the maximum desorption amount of the evaporative emissions is not less than the required desorption amount of the evaporative emissions and the maximum desorption amount of the refueling emissions is not less than the required desorption amount of the refueling emissions; When the design requirement is an emission-type vehicle, determine the initial fuel evaporative control system as the target fuel evaporative control system.

9. A device for determining a fuel evaporative control system, wherein, comprising: A first determination module, configured to conduct a first evaporative emissions test based on an initial fuel evaporative control system including an initial canister adsorbed to the critical point and a calibrated canister solenoid valve to determine the maximum desorption amount of the evaporative emissions of the initial fuel evaporative control system, and conduct a first refueling emissions test to determine the maximum desorption amount of the refueling emissions of the initial fuel evaporative control system; A second determination module, configured to conduct a second evaporative emissions test based on the initial fuel evaporative control system including an empty initial canister and a closed canister solenoid valve to determine the required desorption amount of the evaporative emissions, and conduct a second refueling emissions test to determine the required desorption amount of the refueling emissions; An execution module, configured to respectively compare the maximum evaporative emission desorption amount with the required evaporative emission desorption amount, and compare the maximum refueling emission desorption amount with the required refueling emission desorption amount, and determine a target fuel evaporation control system according to the comparison results and design requirements; A second determination module, specifically configured to: Determine the first mass of the initial charcoal canister before the second evaporative emission test; conduct the second evaporative emission test, replace the initial charcoal canister after the second fuel discharge and 40% refueling, and close the charcoal canister solenoid valve during the high-temperature driving test; determine the second mass of the initial charcoal canister after the second evaporative emission test; and determine the required evaporative emission desorption amount according to the first mass and the second mass.

10. A vehicle, characterized in that, the vehicle includes: one or more processors; a storage device for storing one or more programs; a fuel evaporation control system, the fuel evaporation control system including a flow meter, the flow meter being configured to determine the air volume entering the initial charcoal canister during the high-temperature driving test when conducting the first evaporative emission test, so as to determine the maximum evaporative emission desorption amount of the initial fuel evaporation control system; and determine the total air volume entering the initial charcoal canister during the type-I pretreatment driving test, the type-I test driving test, and the refueling control system treatment driving test when conducting the first refueling emission test, so as to determine the maximum refueling emission desorption amount of the initial fuel evaporation control system; When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining a fuel evaporation control system according to any one of claims 1-8.

11. A storage medium containing computer-executable instructions, the computer-executable instructions being used to execute the method for determining a fuel evaporation control system according to any one of claims 1-8 when executed by a computer processor.

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