Catalytic Converter Heating Method, Device, Equipment and Storage Medium

Abstract

The present invention discloses a method, device, equipment and storage medium for catalytic converter heating. The method includes: correcting the cumulative intake air volume required for catalytic converter heating according to the cumulative intake air volume and the altitude correction coefficient; correcting the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient; and heating the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume. The present invention corrects the cumulative intake air volume and the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient, and heats the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume, so that the vehicle can accelerate the heating process of the catalytic converter through the altitude correction coefficient at a certain altitude, enable the catalytic converter to reach a high conversion efficiency in a short time, and improve the working efficiency of the catalytic converter.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a method, device, equipment and storage medium for heating a catalytic converter. Background Art

[0002] After the vehicle starts, as the fuel in the engine burns, exhaust gas will be continuously discharged. According to the characteristics of the three-way catalytic converter, it can achieve high conversion efficiency only at a certain temperature. In order to make the three-way catalytic converter ignite as soon as possible, the ignition of the three-way catalytic converter requires a certain temperature condition, generally 300-350°C, and the catalytic converter heating function needs to be enabled. For a general three-way catalytic converter, in the absence of an electric heating function, the increase in the temperature of the three-way catalytic converter mainly comes from the heat of the exhaust gas. To increase the heat of the catalytic converter, it is actually controlled by adjusting the heat and flow rate of the exhaust gas.

[0003] Currently, the traditional method for accelerating ignition mainly uses temperature and shutdown time as prerequisites to accelerate the ignition of the three-way catalytic converter. However, the traditional method for accelerating ignition does not consider the influence of altitude on the ignition of the catalytic converter.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide a method, device, equipment and storage medium for heating a catalytic converter, aiming to solve the technical problem of how to accelerate the heating of the catalytic converter at a certain altitude.

[0006] To achieve the above object, the present invention provides a method for heating a catalytic converter, the method for heating a catalytic converter includes the following steps:

[0007] Correct the cumulative intake air volume required for heating the catalytic converter according to the cumulative intake air volume and the altitude correction coefficient;

[0008] Correct the fuel injection volume required for heating the catalytic converter according to the altitude correction coefficient;

[0009] Heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume.

[0010] Optionally, the cumulative intake air volume = cumulative intake air volume characteristic * altitude correction coefficient;

[0011] Among them, the cumulative intake air volume characteristic means:

[0012]

[0013] In the formula, B represents the cumulative intake air volume characteristic, t represents time, Q max represents the maximum air volume flow rate, and ΔT represents the heating time.

[0014] Optionally, the step of correcting the fuel injection quantity required for heating the catalytic converter according to the altitude correction coefficient includes:

[0015] When the catalytic converter is in the starting stage, determining an injection correction factor according to the altitude correction coefficient and the initial injection factor;

[0016] Correcting the target injection factor according to the injection correction factor, and determining the injection factor in the starting stage according to the corrected target injection factor;

[0017] Correcting the fuel injection quantity in the starting stage of the catalytic converter according to the injection factor in the starting stage.

[0018] Optionally, the step of correcting the fuel injection quantity required for heating the catalytic converter according to the altitude correction coefficient includes:

[0019] When the catalytic converter is in the post-starting stage, determining a post-start injection factor according to the altitude correction coefficient and the post-start injection coefficient;

[0020] Correcting the fuel injection quantity in the post-starting stage of the catalytic converter according to the post-start injection factor.

[0021] Optionally, the step of correcting the fuel injection quantity required for heating the catalytic converter according to the altitude correction coefficient includes:

[0022] When the catalytic converter is in the warm-up stage, correcting the intake air quantity for heating the catalytic converter according to the altitude correction coefficient;

[0023] Determining the warm-up stage injection coefficient according to the corrected intake air quantity;

[0024] Correcting the fuel injection quantity in the warm-up stage of the catalytic converter according to the warm-up stage injection coefficient.

[0025] Optionally, before the step of correcting the cumulative intake air quantity required for heating the catalytic converter according to the cumulative intake air quantity characteristic and the altitude correction coefficient, it further includes:

[0026] Detecting the current altitude according to an altitude sensor, and judging whether to perform altitude correction on the catalytic converter heating process according to the current altitude;

[0027] When the current altitude does not reach the preset altitude coefficient, turning off the altitude correction function;

[0028] When the current altitude reaches the preset altitude coefficient, starting the altitude correction function.

[0029] Optionally, after the step of heating the catalytic converter according to the corrected cumulative intake air quantity and the corrected fuel injection quantity, it further includes:

[0030] Preprocess the target vehicle and adjust the altitude correction coefficient of the target vehicle after preprocessing;

[0031] Add the adjusted different altitude correction coefficients to the target vehicle after preprocessing, and collect the operation data of the target vehicle after preprocessing;

[0032] Analyze the operation data to determine the influence of the adjusted different altitude correction coefficients on the catalytic converter.

[0033] In addition, to achieve the above object, the present invention also provides a catalytic converter heating device, which includes: a data determination module and a heating module;

[0034] The data determination module is used to correct the cumulative intake air volume required for heating the catalytic converter according to the cumulative intake air volume and the altitude correction coefficient;

[0035] The data determination module is used to correct the fuel injection volume required for heating the catalytic converter according to the altitude correction coefficient;

[0036] The heating module is used to heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume.

[0037] In addition, to achieve the above object, the present invention also provides a catalytic converter heating device, which includes a memory, a processor, and a catalytic converter heating program stored on the memory and executable on the processor. The catalytic converter heating program is configured to implement the catalytic converter heating method as described above.

[0038] In addition, to achieve the above object, the present invention also provides a storage medium, on which a catalytic converter heating program is stored. When the catalytic converter heating program is executed by a processor, it implements the catalytic converter heating method as described above.

[0039] The present invention discloses a catalytic converter heating method, device, equipment, and storage medium. The method includes: correcting the cumulative intake air volume required for heating the catalytic converter according to the cumulative intake air volume characteristic and the altitude correction coefficient; correcting the fuel injection volume required for heating the catalytic converter according to the altitude correction coefficient; heating the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume. The present invention corrects the cumulative intake air volume and the fuel injection volume required for heating the catalytic converter according to the altitude correction coefficient, and heats the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume, so that the vehicle can accelerate the heating process of the catalytic converter through the altitude correction coefficient at a certain altitude, enable the catalytic converter to reach a high conversion efficiency in a short time, and improve the working efficiency of the catalytic converter. Description of the Drawings

[0040] Figure 1It is a schematic structural diagram of a catalytic converter heating device in the hardware operating environment related to the embodiment solution of the present invention;

[0041] Figure 2 It is a schematic flowchart of the first embodiment of the catalytic converter heating method of the present invention;

[0042] Figure 3 It is a schematic flowchart of the second embodiment of the catalytic converter heating method of the present invention;

[0043] Figure 4 It is a schematic flowchart of the third embodiment of the catalytic converter heating method of the present invention;

[0044] Figure 5 It is a schematic diagram of the principle of accelerating the catalytic converter with the cumulative intake air volume in an embodiment of the catalytic converter heating method of the present invention;

[0045] Figure 6 It is a flowchart of altitude correction after startup in an embodiment of the catalytic converter heating method of the present invention;

[0046] Figure 7 It is a flowchart of altitude correction in the startup stage in an embodiment of the catalytic converter heating method of the present invention;

[0047] Figure 8 It is a flowchart of altitude correction in the warm-up stage in an embodiment of the catalytic converter heating method of the present invention;

[0048] Figure 9 It is a structural block diagram of the first embodiment of the catalytic converter heating device of the present invention.

[0049] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] Refer to Figure 1 , Figure 1 It is a schematic structural diagram of a catalytic converter heating device in the hardware operating environment related to the embodiment solution of the present invention.

[0052] Such as Figure 1As shown, the catalytic converter heating device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. For the wired interface of the user interface 1003, it may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed Random Access Memory (RAM) or a stable memory (Non-volatile Memory, NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0053] Those skilled in the art can understand that Figure 1 the structure shown in

[0054] does not constitute a limitation on the catalytic converter heating device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 1 As shown in

[0055] the memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and a catalytic converter heating program. Figure 1 In the catalytic converter heating device shown in

[0056] the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server; the user interface 1003 is mainly used to connect to the user device; the catalytic converter heating device calls the catalytic converter heating program stored in the memory 1005 through the processor 1001 and executes the catalytic converter heating method provided in the embodiments of the present invention.

[0057] Based on the above hardware structure, an embodiment of the catalytic converter heating method of the present invention is proposed. Figure 2 Figure 2 As shown in

[0058] Step S10: Correct the cumulative intake air volume required for catalytic converter heating according to the cumulative intake air volume characteristic and the altitude correction coefficient.

[0059] ​It should be noted that the execution subject of this embodiment can be a computer software device with data processing, network communication, and program running functions, such as a catalytic converter heating device, or other electronic devices that can achieve the same or similar functions. This embodiment places no restrictions on this.

[0060] It should be understood that after the vehicle starts, as the fuel in the engine burns, exhaust gas will be continuously discharged. According to the characteristics of the three-way catalytic converter, high conversion efficiency can only be achieved at a certain temperature. In order to make the three-way catalytic converter ignite as soon as possible, the ignition of the three-way catalytic converter requires certain temperature conditions, generally at 300 - 350 °C, and the catalytic converter heating function needs to be enabled. For a general three-way catalytic converter, in the absence of an electric heating function, the increase in the temperature of the three-way catalytic converter mainly comes from the heat of the exhaust gas. To increase the heat of the catalytic converter, it is actually controlled by adjusting the heat and flow rate of the exhaust gas. The three-way catalytic converter cannot obtain the actual temperature. Whether heating is required mainly depends on variables such as the engine coolant temperature, intake air temperature, and shutdown time. Traditional methods to accelerate ignition mainly use temperature and shutdown time as prerequisites, and then optimize the calibration to increase the idle speed; retard the ignition angle to reduce the ignition efficiency; optimize the injection mode; optimize the fuel rail pressure, etc. Traditional catalytic converter heating does not consider the influence of altitude on the three-way catalytic converter. In the enabling conditions for catalytic converter heating, in addition to temperature and shutdown time, an altitude coefficient is added, as well as altitude coefficient correction, so as to ensure the smooth ignition of the three-way catalytic converter in high-altitude areas.

[0061] To overcome the above defects, this embodiment sets an altitude correction coefficient, and corrects the cumulative intake air volume and the fuel injection volume of the catalytic converter according to the altitude correction coefficient at a certain altitude, so as to meet the intake air volume and fuel injection volume required for catalytic converter heating at a certain altitude, and prevent heating the catalytic converter based on the basic intake air volume and fuel injection volume on the plain. This speeds up the heating rate of the catalytic converter at a certain altitude, improves the heating efficiency of the catalytic converter, enables the catalytic converter to heat up faster at a certain altitude, and achieves a high conversion rate in a short time.

[0062] It should be noted that the cumulative intake air volume can represent the cumulative intake air volume characteristic curve. According to the cumulative air volume characteristic curve, the larger the set intake air volume value at a certain specific temperature, the longer the time to reach the cumulative intake air volume, and the longer the heating time of the catalytic converter. When the cumulative air volume characteristic value is set to 0, no heating is performed, and whether to heat the catalytic converter can be selected according to whether the cumulative intake air volume characteristic value is set.

[0063] It can be understood that the altitude correction coefficient is used to correct the cumulative intake air volume characteristic curve at a certain altitude. For example, at a certain altitude, more intake air volume is required than on the plain. Therefore, the cumulative intake air volume is corrected according to the altitude correction coefficient to meet the intake air volume standard at that altitude and accelerate the heating of the catalytic converter.

[0064] It is understood that the cumulative intake air volume = cumulative intake air volume characteristic * altitude correction coefficient, where the cumulative intake air volume characteristic represents:

[0065]

[0066] In the formula, B represents the cumulative intake air volume characteristic, t represents time, Q max represents the maximum air volume flow rate, and ΔT represents the heating time.

[0067] It is understood that Q max The maximum air volume flow rate can be:

[0068]

[0069] In the formula, V d represents the total engine displacement, S max represents the maximum engine speed, V e represents the charging efficiency, and K represents a constant. For a naturally aspirated gasoline engine: V e = 0.7 - 0.8 (spark ignition), for a supercharged engine: V e = 1.6, and for a four-stroke engine K = 2000.

[0070] It should be noted that in this embodiment, the catalytic converter is heated at high altitude, and the scope of high altitude is not limited in this embodiment.

[0071] Furthermore, in order to perform altitude correction more accurately and quickly, therefore, before step S10 of this embodiment, it further includes:

[0072] Detect the current altitude according to the altitude sensor, and determine whether to perform altitude correction on the catalytic converter heating process according to the current altitude;

[0073] When the current altitude does not reach the preset altitude coefficient, turn off the altitude correction function;

[0074] When the current altitude reaches the preset altitude coefficient, start the altitude correction function.

[0075] For the sake of easy understanding, refer to Figure 5 for illustration. Figure 5 It is a schematic diagram of accelerating the catalytic converter with the cumulative intake air volume. In the figure, the altitude coefficient is added under the enabling condition of the catalytic converter heating requirement in the cold engine state. The altitude coefficient is used to determine whether to start the altitude coefficient correction function. When it is necessary to correct the cumulative intake air volume characteristic curve, the cumulative intake air volume characteristic curve is corrected according to the altitude correction coefficient to accelerate the heating of the catalytic converter.

[0076] Step S20: Correct the fuel injection quantity required for catalytic converter heating according to the altitude correction coefficient.

[0077] It should be noted that at high altitudes, not only does the intake air volume affect catalytic converter heating, but the fuel injection quantity during the heating stage also has an impact on catalytic converter heating.

[0078] It can be understood that there are three stages of catalytic converter heating, namely the start-up stage, the post-start stage, and the warm-up stage. The altitude correction coefficient needs to correct the fuel injection quantity in these three stages.

[0079] It should be understood that different altitudes require different amounts of fuel consumption. If the catalytic converter heating is started according to the fuel injection quantity on the plain, it will prolong the heating time of the catalytic converter. Therefore, the fuel injection quantity at high altitudes is corrected according to the altitude correction coefficient, so as to accelerate the heating of the catalytic converter.

[0080] Furthermore, in order to accelerate the heating of the catalytic converter, step S20 of this embodiment may include:

[0081] When the catalytic converter is in the post-start stage, determine the post-start fuel injection factor according to the altitude correction coefficient and the post-start fuel injection coefficient;

[0082] Correct the fuel injection quantity in the post-start stage of the catalytic converter according to the post-start fuel injection factor.

[0083] For the sake of easy understanding, refer to Figure 6 for illustration. Figure 6 is the altitude correction flowchart after start-up. In the figure, start-up correction is repeated according to the enable condition downtime and start-up temperature, and the post-start fuel injection factor is determined according to the post-start fuel injection basic coefficient, repeated start-up correction, altitude correction coefficient, adjustment factor, weight factor, and offset.

[0084] Step S30: Heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection quantity.

[0085] It can be understood that the catalytic converter is heated according to the corrected cumulative intake air volume and the corrected fuel injection quantity respectively, which can accelerate the heating process of the catalytic converter while ensuring safe and stable start-up.

[0086] Furthermore, in order to improve the accuracy of altitude correction, after step S30 of this embodiment, it further includes:

[0087] Perform pre-treatment on the target vehicle and adjust the altitude correction coefficient of the target vehicle after pre-treatment;

[0088] Add the adjusted different altitude correction coefficients to the target vehicle after pre-treatment, and collect the operation data of the target vehicle after pre-treatment;

[0089] Analyze the operating data to determine the impact of different altitude correction factors after adjustment on the catalytic converter.

[0090] It can be understood that the pre-treatment of the target vehicle can be soaking the vehicle for 8 hours at 23°C or 22°C to make the engine water temperature close to the ambient temperature and within 2°C of the intake air temperature.

[0091] It should be noted that by adjusting the ECU data of two versions, one version adds the altitude correction factor and the other version does not add the altitude correction factor. Test these two versions separately, collect the operating data of the target vehicle during the test and analyze it.

[0092] It can be understood that the influence of adding and not adding the altitude factor on the light-off time of the catalytic converter can be compared and analyzed according to the light-off time of the catalytic converter.

[0093] In this embodiment, the cumulative intake air volume required for heating the catalytic converter is corrected according to the cumulative intake air volume characteristic and the altitude correction factor; the fuel injection volume required for heating the catalytic converter is corrected according to the altitude correction factor; the catalytic converter is heated according to the corrected cumulative intake air volume and the corrected fuel injection volume. The present invention corrects the cumulative intake air volume and the fuel injection volume required for heating the catalytic converter according to the altitude correction factor, and heats the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume, so that the vehicle can accelerate the heating process of the catalytic converter through the altitude correction factor at a certain altitude, enable the catalytic converter to reach a high conversion efficiency in a short time, and improve the working efficiency of the catalytic converter.

[0094] Refer to Figure 3 , Figure 3 is a schematic flow chart of the second embodiment of the catalytic converter heating method of the present invention. Based on the first embodiment shown above Figure 2 a second embodiment of the catalytic converter heating method of the present invention is proposed.

[0095] In the second embodiment, the step S20 includes:

[0096] Step S201: When the catalytic converter is in the starting stage, determine the fuel injection correction factor according to the altitude correction factor and the initial fuel injection factor.

[0097] It can be understood that the altitude correction factor is added in the starting stage to correct the fuel injection factor to adapt to the fuel injection volume at high altitude.

[0098] In a specific implementation, in the starting stage of the catalytic converter, determine the fuel injection correction factor according to the altitude correction factor, the basic fuel injection coefficient and the initial fuel injection factor.

[0099] Step S202: Correct the target fuel injection factor according to the fuel injection correction factor, and determine the fuel injection factor in the starting stage according to the corrected target fuel injection factor.

[0100] For the sake of easy understanding, reference is made to Figure 7 for description. Figure 7 Figure 7 is the altitude correction flowchart in the starting stage. In the figure, according to the starting requirements, such as cold start, hot start and restart, the corresponding basic fuel injection model is determined. The initial fuel injection factor is determined according to the basic fuel injection model. The initial fuel injection factor is used to determine the fuel injection quantity MAP (separation / low pressure) and the fuel injection times MAP. The fuel injection correction factor is determined according to the altitude correction coefficient, the basic fuel injection coefficient and the initial fuel injection factor. The target fuel injection factor is corrected according to the fuel injection correction factor and the restart correction MAP. The fuel injection factor in the starting stage is determined according to the corrected target fuel injection factor.

[0101] Step S303: Correct the fuel injection quantity in the starting stage of the catalytic converter according to the fuel injection factor in the starting stage.

[0102] It can be understood that different catalytic converter heating stages have different fuel requirements, and the fuel injection quantity is adjusted according to the fuel injection factors in different stages.

[0103] In this embodiment, when the catalytic converter is in the starting stage, the fuel injection correction factor is determined according to the altitude correction coefficient and the initial fuel injection factor; the target fuel injection factor is corrected according to the fuel injection correction factor, and the fuel injection factor in the starting stage is determined according to the corrected target fuel injection factor; the fuel injection quantity in the starting stage of the catalytic converter is corrected according to the fuel injection factor in the starting stage. In this embodiment, the fuel injection correction factor is determined according to the altitude correction coefficient in the starting stage, the target fuel injection factor is corrected according to the fuel injection correction factor, and the fuel injection quantity is corrected according to the target fuel injection factor, so as to increase the fuel consumption of the vehicle under high altitude conditions by correcting the fuel injection quantity and accelerate the ignition of the catalytic converter.

[0104] Reference is made to Figure 4 , Figure 4 which is the schematic flowchart of the third embodiment of the catalytic converter heating method of the present invention. Based on the first embodiment shown in the above Figure 2 , the third embodiment of the catalytic converter heating method of the present invention is proposed.

[0105] In the third embodiment, the step S20 includes:

[0106] Step S201': When the catalytic converter is in the warm-up stage, correct the intake air volume for heating the catalytic converter according to the altitude correction coefficient.

[0107] It can be understood that the altitude correction coefficient is added in the warm-up stage to correct the intake air volume to adapt to the fuel injection quantity under high altitude.

[0108] In a specific implementation, during the warm-up stage of the catalytic converter, the fuel injection for the catalytic converter is corrected for load, the load during the heating of the catalytic converter is corrected, the fuel injection for the catalytic converter is corrected for intake air volume, and an altitude coefficient is added to correct the intake air volume during the heating of the catalytic converter.

[0109] Step S202': Determine the fuel injection coefficient during the warm-up stage based on the corrected intake air volume.

[0110] For ease of understanding, refer to Figure 8 for illustration. Figure 8 FIG. is the altitude correction flowchart for the warm-up stage. In the figure, the catalytic converter fuel injection MAP during the heating of the catalytic converter in the warm-up stage is determined, the fuel injection for the catalytic converter is corrected for load and intake air volume, the load during the heating of the catalytic converter is corrected, and an altitude coefficient is added to correct the intake air volume during the heating of the catalytic converter to determine the fuel injection coefficient during the warm-up stage.

[0111] Step S203': Correct the fuel injection amount during the warm-up stage of the catalytic converter according to the fuel injection coefficient during the warm-up stage.

[0112] It can be understood that different heating stages of the catalytic converter have different fuel requirements, and the fuel injection amount is adjusted according to the fuel injection factors in different stages.

[0113] In this embodiment, when the catalytic converter is in the warm-up stage, the intake air volume for heating the catalytic converter is corrected according to the altitude correction coefficient; the fuel injection coefficient during the warm-up stage is determined based on the corrected intake air volume; and the fuel injection amount during the warm-up stage of the catalytic converter is corrected according to the fuel injection coefficient during the warm-up stage. In this embodiment, the intake air volume in the warm-up stage is corrected according to the altitude correction coefficient, the fuel injection coefficient during the warm-up stage is determined based on the corrected intake air volume, and thus the fuel injection amount is corrected according to the fuel injection coefficient during the warm-up stage, accelerating the heating speed of the catalytic converter.

[0114] In addition, referring to Figure 9 , an embodiment of the present invention also provides a catalytic converter heating device, which includes: a data determination module 10 and a heating module 20;

[0115] The data determination module 10 is configured to correct the cumulative intake air volume required for heating the catalytic converter according to the cumulative intake air volume and the altitude correction coefficient;

[0116] The data determination module 10 is configured to correct the fuel injection amount required for heating the catalytic converter according to the altitude correction coefficient;

[0117] The heating module 20 is configured to heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection amount.

[0118] In this embodiment, the cumulative intake air volume required for heating the catalytic converter is corrected according to the cumulative intake air volume characteristic and the altitude correction coefficient; the fuel injection volume required for heating the catalytic converter is corrected according to the altitude correction coefficient; and the catalytic converter is heated according to the corrected cumulative intake air volume and the corrected fuel injection volume. According to the altitude correction coefficient, the present invention corrects the cumulative intake air volume and the fuel injection volume required for heating the catalytic converter, and heats the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume, so that the vehicle can accelerate the heating process of the catalytic converter through the altitude correction coefficient at a certain altitude, enable the catalytic converter to reach a high conversion efficiency in a short time, and improve the working efficiency of the catalytic converter.

[0119] In addition, an embodiment of the present invention further provides a storage medium, on which a catalytic converter heating program is stored. When the catalytic converter heating program is executed by a processor, the catalytic converter heating method described above is implemented.

[0120] Based on the first embodiment of the catalytic converter heating device of the present invention, a second embodiment of the catalytic converter heating device of the present invention is proposed.

[0121] In this embodiment, the data determination module 10 is configured to determine an injection correction factor according to the altitude correction coefficient and the initial injection factor when the catalytic converter is in the starting stage.

[0122] Further, the data determination module 10 is further configured to correct the target injection factor according to the injection correction factor, and determine the injection factor in the starting stage according to the corrected target injection factor.

[0123] Further, the data determination module 10 is further configured to correct the fuel injection volume in the starting stage of the catalytic converter according to the injection factor in the starting stage.

[0124] Further, the data determination module 10 is further configured to determine an after-start injection factor according to the altitude correction coefficient and the after-start injection coefficient when the catalytic converter is in the post-start stage.

[0125] Further, the data determination module 10 is further configured to correct the fuel injection volume in the post-start stage of the catalytic converter according to the after-start injection factor.

[0126] Further, the data determination module 10 is further configured to correct the intake air volume for heating the catalytic converter according to the altitude correction coefficient when the catalytic converter is in the warm-up stage.

[0127] Further, the data determination module 10 is further configured to determine the warm-up stage injection coefficient according to the corrected intake air volume.

[0128] Further, the data determination module 10 is further configured to correct the fuel injection volume in the warm-up stage of the catalytic converter according to the warm-up stage injection coefficient.

[0129] Furthermore, the data determination module 10 is further configured to detect the current altitude according to the altitude sensor and determine whether to perform altitude correction on the catalytic converter heating process based on the current altitude.

[0130] Furthermore, the data determination module 10 is further configured to turn off the altitude correction function when the current altitude does not reach the preset altitude coefficient.

[0131] Furthermore, the data determination module 10 is further configured to activate the altitude correction function when the current altitude reaches the preset altitude coefficient.

[0132] Furthermore, the heating module 20 is further configured to perform preprocessing on the target vehicle and adjust the altitude correction coefficient of the target vehicle after preprocessing.

[0133] Furthermore, the heating module 20 is further configured to add different adjusted altitude correction coefficients to the target vehicle after preprocessing and collect the operation data of the target vehicle after preprocessing.

[0134] Furthermore, the heating module 20 is further configured to analyze the operation data to determine the influence of the different adjusted altitude correction coefficients on the catalytic converter.

[0135] For other embodiments or specific implementation manners of the catalytic converter heating device of the present invention, reference may be made to the above method embodiments, which will not be elaborated here.

[0136] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0137] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0138] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a Read Only Memory image (ROM) / Random Access Memory (RAM), magnetic disk, optical disk), and includes several instructions to enable a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0139] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A method for heating a catalytic converter, characterized in that, The catalytic converter heating method includes the following steps: Correct the cumulative intake air volume required for catalytic converter heating according to the cumulative intake air volume and the altitude correction coefficient; Correct the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient; Heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume; The cumulative intake air volume = cumulative intake air volume characteristic * altitude correction coefficient; Wherein, the cumulative intake air volume characteristic represents: Wherein, B represents the cumulative intake air volume characteristic, t represents time, Q max represents the maximum air volume flow rate, and ΔT represents the heating time.

2. The catalytic converter heating method according to claim 1, characterized in that, The step of correcting the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient includes: When the catalytic converter is in the starting stage, determine the fuel injection correction factor according to the altitude correction coefficient and the initial fuel injection factor; Correct the target fuel injection factor according to the fuel injection correction factor, and determine the fuel injection factor in the starting stage according to the corrected target fuel injection factor; Correct the fuel injection volume in the starting stage of the catalytic converter according to the fuel injection factor in the starting stage.

3. The catalytic converter heating method according to claim 1, characterized in that, The step of correcting the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient includes: When the catalytic converter is in the post-starting stage, determine the post-starting fuel injection factor according to the altitude correction coefficient and the post-starting fuel injection coefficient; Correct the fuel injection volume in the post-starting stage of the catalytic converter according to the post-starting fuel injection factor.

4. The catalytic converter heating method according to claim 1, characterized in that The step of correcting the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient includes: When the catalytic converter is in the warm-up stage, correct the intake air volume for catalytic converter heating according to the altitude correction coefficient; Determine the warm-up stage fuel injection coefficient according to the corrected intake air volume; Correct the fuel injection volume in the warm-up stage of the catalytic converter according to the warm-up stage fuel injection coefficient.

5. The catalytic converter heating method according to any one of claims 1 to 4, characterized in that, Before the step of correcting the cumulative intake air volume required for catalytic converter heating according to the cumulative intake air volume characteristic and the altitude correction coefficient, it further includes: Detect the current altitude according to the altitude sensor, and judge whether to perform altitude correction on the catalytic converter heating process according to the current altitude; When the current altitude does not reach the preset altitude coefficient, turn off the altitude correction function; When the current altitude reaches the preset altitude coefficient, start the altitude correction function.

6. The catalytic converter heating method according to any one of claims 1 to 4, characterized in that, After the step of heating the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume, it further includes: Perform pre-treatment on the target vehicle, and adjust the altitude correction coefficient of the pre-treated target vehicle; Add the adjusted different altitude correction coefficients to the pre-treated target vehicle, and collect the operation data of the pre-treated target vehicle; Analyze the operation data to judge the influence of the adjusted different altitude correction coefficients on the catalytic converter.

7. A catalytic converter heating device, characterized in that, The catalytic converter heating device includes: a data determination module and a heating module; The data determination module is used to correct the cumulative intake air volume required for catalytic converter heating according to the cumulative intake air volume and the altitude correction coefficient; The data determination module is used to correct the fuel injection volume required for catalytic converter heating according to the altitude correction coefficient; The heating module is used to heat the catalytic converter according to the corrected cumulative intake air volume and the corrected fuel injection volume; The cumulative intake air volume = cumulative intake air volume characteristic * altitude correction coefficient; Wherein, the cumulative intake air volume characteristic represents: In the formula, B represents the cumulative intake air volume characteristic, t represents time, Q max represents the maximum air volume flow rate, and ΔT represents the heating time.

8. A catalytic converter heating device, characterized in that, The catalytic converter heating device includes: a memory, a processor, and a catalytic converter heating program stored on the memory and executable on the processor. When the catalytic converter heating program is executed by the processor, the steps of the catalytic converter heating method according to any one of claims 1 to 6 are implemented.

9. A storage medium, characterized in that, A catalytic converter heating program is stored on the storage medium. When the catalytic converter heating program is executed by a processor, the steps of the catalytic converter heating method according to any one of claims 1 to 6 are implemented.

Images