Method and system for increasing endurance mileage of urea, storage medium and equipment

Abstract

The invention provides a method, a system, a storage medium and equipment for increasing the endurance mileage of urea, and the method comprises the steps: obtaining the state information of a vehicle in the operation process through an ECU system of the vehicle, the state information at least comprising the actual urea consumption rate of the current vehicle in the operation process; the preset parameter condition at least comprises a pre-calibrated target urea consumption rate in the running process of the current vehicle, judging whether the state information meets the preset parameter condition or not, namely judging whether the actual urea rate is greater than the target urea consumption rate or not, and if the actual urea consumption rate is greater than the target urea consumption rate, determining that the actual urea rate is greater than the target urea consumption rate. And the engine operation mode is switched into the urea consumption control mode, the urea consumption injection amount is reduced, meanwhile, the whole vehicle road PEMS emission meets the regulatory requirements, and the purpose of increasing the endurance mileage of urea is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of improving vehicle cruising range, and in particular to a method, system, storage medium and device for improving the cruising range of urea. Background Art

[0002] With the implementation of the "Heavy-Duty Diesel Vehicle Pollutant Emission Limits and Measurement Methods (China Phase VI)" standard, limits for nitrogen oxide emissions from diesel vehicles have been further tightened. The mainstream emission control technology for heavy-duty vehicles is DOC+DPF+SCR. The SCR, a selective catalytic reduction device, primarily controls nitrogen oxides (NOx) in exhaust emissions. The normal operation of the SCR system requires the installation of a urea metering injection device to inject a urea solution. Urea is a reducing liquid substance that undergoes hydrolysis and thermal decomposition at high temperatures to produce ammonia (NH3). NH3, under the action of the SCR system's catalyst, reduces NOx, ultimately emitting nitrogen and excess water. When the urea level in the vehicle's urea tank reaches a low level, the vehicle's instrument panel will gradually alert the user to urea usage, including alarms, torque limits, and speed restrictions. Therefore, urea has become an essential consumable in daily vehicle use, significantly impacting both the cost and convenience of vehicle operation.

[0003] The existing technology is limited to the hardware structure design of the urea system, the interactive display of the urea liquid level signal and the instrument, and the urea cruising range calculation and reminder method. However, urea is an essential consumable for daily use of diesel vehicles. Under standard operating conditions, the urea consumption within a certain mileage range of the vehicle has a certain impact on the user's vehicle usage cost. Moreover, as the urea consumption increases, the frequency of urea refueling directly affects the user's vehicle usage convenience. Therefore, the existing technology has the problem of being unable to meet the user's actual vehicle usage convenience and vehicle cost requirements. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a method, system, storage medium and device for improving the cruising range of urea, so as to solve the problem that the existing technology cannot meet the user's actual vehicle use convenience and vehicle cost requirements.

[0005] According to an embodiment of the present invention, a method for improving urea cruising range includes: acquiring, in real time, status information of the current vehicle during operation, and determining whether the status information satisfies preset parameter conditions, wherein the status information includes at least an actual urea consumption rate of the current vehicle during operation, and the preset parameter conditions include at least a pre-calibrated target urea consumption rate of the current vehicle during operation; If so, the vehicle ECU calculates and determines whether the actual urea consumption rate is greater than the target urea consumption rate; If so, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

[0006] Furthermore, the vehicle status information also includes vehicle speed, engine speed, engine operating mode, post-processing system status, and fault status information.

[0007] Furthermore, the preset parameter conditions also include a preset speed limit corresponding to the vehicle speed, a preset speed limit corresponding to the engine speed, a preset mode condition corresponding to the engine mode, a preset system condition corresponding to the post-processing system state, and a preset fault condition corresponding to the fault state.

[0008] Furthermore, the step of obtaining the current status information of the vehicle during operation in real time and determining whether the status information meets the preset parameter conditions also includes: A first judging unit is configured to judge whether the vehicle speed is greater than or equal to the preset speed limit; If yes, execute the second judgment unit; A second determining unit is configured to determine whether the engine speed is greater than or equal to the preset speed limit; If yes, the third judgment unit is executed.

[0009] Furthermore, after the step of determining whether the vehicle speed is greater than or equal to the preset speed limit, the step further includes: A third judgment unit is configured to judge whether the engine mode meets any one of the preset mode conditions; If it is consistent, the fourth judgment unit is executed.

[0010] Furthermore, after the step of determining whether the engine mode meets any one of the preset mode conditions, the step further includes: A fourth determination unit is configured to determine whether the post-processing system state satisfies any one of the preset system conditions; If it is met, the fifth judgment unit is executed.

[0011] Furthermore, after the step of determining whether the post-processing system state meets any one of the preset system conditions, the step further includes: A fifth determining unit: determining whether the fault state is different from the fault condition; If so, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

[0012] According to an embodiment of the present invention, a system for improving urea driving range includes: An acquisition and judgment module acquires the status information of the current vehicle during operation in real time and determines whether the status information meets the preset parameter conditions. If so, the first execution module is executed; a first execution module, calculating, by a vehicle ECU, whether the actual urea consumption rate is greater than the target urea consumption rate, and if so, executing a second execution module; In the second execution module, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

[0013] The present invention also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the method for improving the urea cruising range is implemented.

[0014] The present invention also proposes a device for improving the cruising range of urea, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, for processing the above-mentioned method for improving the cruising range of urea.

[0015] Compared with the prior art: the present invention proposes a method for improving urea cruising range, which obtains status information of the vehicle during operation through the vehicle's ECU system, wherein the status information at least includes the actual urea consumption rate of the current vehicle during operation, and the preset parameter conditions at least include a target urea consumption rate pre-calibrated during the current vehicle during operation. It is judged whether the status information meets the preset parameter conditions, that is, whether the actual urea rate is greater than the target urea consumption rate. If the actual urea consumption rate is greater than the target urea consumption rate, the engine operation mode is switched to a urea consumption control mode, and the urea consumption injection amount is reduced to achieve the purpose of improving urea cruising range, thereby solving the problem that the prior art cannot meet users' actual vehicle use convenience and vehicle cost requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of a method for improving urea cruising range in a first embodiment of the present invention; Figure 2 This is a flow chart of a method for improving urea cruising range in a second embodiment of the present invention; Figure 3 This is a structural block diagram of a system for improving urea cruising range in a third embodiment of the present invention; Figure 4 This is a comparison chart of experimental data on improving urea cruising range in the fourth embodiment of the present invention; Figure 5 Schematic diagram of the structure of the device for improving the urea cruising range in the sixth embodiment of the present invention.

[0017] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1 See also Figure 1 , shown is a method for improving urea cruising range in the first embodiment of the present invention, and the method specifically includes steps S01 to S03.

[0022] Step S01, obtaining the status information of the current vehicle during operation in real time, and judging whether the status information meets the preset parameter conditions, if so, executing step S02.

[0023] Step S02, the vehicle ECU calculates and determines whether the actual urea consumption rate is greater than the target urea consumption rate. If so, step S03 is executed; In step S03 , the urea endurance control function is activated, and the engine operation mode is switched to the urea consumption control mode.

[0024] It should be noted that this application is based on the fact that during vehicle operation, the ECU receives signals from components such as the engine and aftertreatment. When the exhaust temperature reaches a certain level, a urea solution is injected into the exhaust gas stream, where it decomposes into NH3 through a hydrolysis reaction. NH3 reacts with NOx in the exhaust gas to convert into nitrogen (N2) and water (H2O), thereby reducing NOx emissions. During vehicle operation, when the urea consumption rate reaches an extremely high level, the vehicle's urea range may decrease after a certain mileage. This application designs a urea range control method, develops a dedicated software function integrated into the ECU system, and verifies the urea range improvement effect through online calibration and actual road testing, ultimately completing the software function release. The ECU (Electronic Control Unit) is the core component of a vehicle's electronic control system. It receives sensor signals, processes them, and sends control commands to actuators, achieving precise control of various vehicle systems. It serves as the vehicle's "brain," coordinating and managing the operation of various components, including the engine, transmission, braking system, and body electronics, to ensure efficient, safe, and stable vehicle operation.

[0025] As for the specific implementation of steps S01 to S03, first, the vehicle's ECU system obtains the vehicle's status information during operation, wherein the status information at least includes the actual urea consumption rate of the current vehicle during operation, and the preset parameter conditions at least include the target urea consumption rate pre-calibrated during the current vehicle during operation. It is determined whether the status information meets the preset parameter conditions, that is, whether the actual urea rate is greater than the target urea consumption rate. If the actual urea consumption rate is greater than the target urea consumption rate, the engine operation mode is switched to the urea consumption control mode to reduce the urea consumption injection amount to achieve the purpose of improving the urea cruising range.

[0026] In summary, the method for improving urea cruising range in the above embodiment obtains the status information of the vehicle during operation through the vehicle's ECU system, wherein the status information at least includes the actual urea consumption rate of the current vehicle during operation, and the preset parameter conditions at least include the target urea consumption rate pre-calibrated during the current vehicle during operation. It is judged whether the status information meets the preset parameter conditions, that is, whether the actual urea rate is greater than the target urea consumption rate. If the actual urea consumption rate is greater than the target urea consumption rate, the engine operation mode is switched to the urea consumption control mode, and the urea consumption injection amount is reduced to achieve the purpose of improving the urea cruising range.

[0027] Example 2 See also Figure 2 , shown is a method for improving urea cruising range in a second embodiment of the present invention, and the method specifically includes steps S11 to S16.

[0028] It should be noted that the vehicle status information also includes the vehicle speed, engine speed, engine operating mode, post-processing system status, and fault status information. In addition, the preset parameter conditions also include the preset speed limit corresponding to the vehicle speed, the preset speed limit corresponding to the engine speed, the preset mode conditions corresponding to the engine mode, the preset system conditions corresponding to the post-processing system status, and the preset fault conditions corresponding to the fault status.

[0029] Step S11, a first judgment unit: judges whether the vehicle speed is greater than or equal to a preset speed limit, and if so, executes step S12.

[0030] Step S12, a second determination unit: determining whether the engine speed is greater than or equal to a preset speed limit; if so, executing step S13.

[0031] Step S13, a third judgment unit: judging whether the engine mode meets any one of the preset mode conditions; if so, executing step S14.

[0032] Step S14, a fourth determination unit: determining whether the post-processing system state meets any one of the preset system conditions; if so, executing step S15.

[0033] Step S15, a fifth determination unit: determining whether the fault state is different from the fault condition; if so, executing step S16.

[0034] In step S16, the urea endurance control function is activated, and the engine operation mode is switched to the urea consumption control mode.

[0035] For the specific implementation of steps S11 to S16, the vehicle status information such as the vehicle speed, engine speed, engine operating mode, post-processing system status and fault status of the vehicle during driving is compared with the corresponding preset parameter conditions in turn, wherein the preset parameter conditions are comparison information obtained according to the vehicle status information fed back during the vehicle driving process before the test, such as the preset speed limit and the preset speed limit in the preset parameter conditions, and there are certain differences in the comparison information corresponding to different vehicle models, which can be understood by those skilled in the art and will not be elaborated on here, and the operation of step S11 is executed to determine whether the vehicle speed is Is it greater than or equal to the preset vehicle speed limit? If so, execute step S12 to determine whether the engine speed is greater than or equal to the preset speed limit. If so, execute step S13. In addition, for the further description of the preset mode conditions, preset system conditions, and preset fault conditions in the preset parameter conditions, the preset mode conditions for the engine at least include normal mode, heating mode, regeneration mode, etc., and in step S13, specifically determine whether the current engine mode meets any of the above-mentioned normal mode, heating mode, and regeneration mode conditions. If so, execute step S14 to determine whether the post-processing system state is Whether it meets any of the preset system conditions, wherein the post-treatment system state is specifically the sub-state of the urea injection coordinator, and the preset system condition is specifically the urea injection metering control mode, wherein the preset system conditions at least include urea metering control mode, urea pressure building control mode, urea filling control mode, etc., and in step S14, it is specifically judged whether the current post-treatment system state meets any of the preset system conditions. If it meets, step S15 is executed to judge whether the fault state is different from the fault condition, wherein the fault state at least includes urea system injection fault, air system fault, and fuel system fault. Oil system failure, etc., and the fault condition is specifically a urea system injection failure. In step S15, it is specifically determined whether the fault state is different from the fault condition. If different, step S16 is executed. It should be noted that the activation condition of step S16 needs to be established on the basis that the above steps S11-step S15 all meet the corresponding conditions. The urea endurance control function of the vehicle is activated by the ECU system, and the engine operation mode is switched to the urea consumption control mode. In this mode, the urea consumption injection amount is reduced to achieve an increase in urea endurance mileage. If any of the conditions in steps S11-step S15 is not met, the vehicle maintains the current normal driving state.

[0036] In summary, the method for improving urea cruising range in the above embodiment is different from that in embodiment 1 in that, during vehicle operation, the vehicle speed, engine speed, engine operating mode, post-processing system status and fault status are monitored in real time, and the judgment rules of each sub-information in the above vehicle status information are connected in series, and condition comparison is performed on the above sub-information in turn. When all conditions are met at the same time, the urea cruising range control function is activated, the engine operating mode is switched to the urea consumption control mode, and the urea consumption injection amount is reduced in this mode to achieve an improvement in urea cruising range.

[0037] Example 3 Another aspect of the present invention provides a system for improving the cruising range of urea, wherein the system for improving the cruising range of urea is used to implement the steps of any one of the methods described in the first and second embodiments above. Figure 3 , the system comprising: The acquisition and judgment module 11 acquires the status information of the current vehicle during operation in real time, and judges whether the status information meets the preset parameter conditions. If so, the first execution module is executed.

[0038] The first execution module 12 calculates, through the vehicle ECU, whether the actual urea consumption rate is greater than the target urea consumption rate, and if so, executes the second execution module.

[0039] The second execution module 13 activates the urea endurance control function and switches the engine operation mode to the urea consumption control mode.

[0040] Furthermore, in some optional embodiments of the present invention, the acquisition and determination module 11 further includes: The first judgment unit is configured to judge whether the vehicle speed is greater than or equal to the preset speed limit.

[0041] If so, the second judgment unit is executed.

[0042] The second judgment unit is configured to judge whether the engine speed is greater than or equal to the preset speed limit.

[0043] If yes, the third judgment unit is executed.

[0044] The third judgment unit is configured to judge whether the engine mode meets any one of the preset mode conditions.

[0045] If it is consistent, the fourth judgment unit is executed.

[0046] The fourth judgment unit is configured to judge whether the post-processing system state meets any one of the preset system conditions.

[0047] If it is met, the fifth judgment unit is executed.

[0048] A fifth determining unit is configured to determine whether the fault state is different from the fault condition.

[0049] If so, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

[0050] Example 4 See also Figure 4 , shown is a comparison chart of PEMS test data obtained using the method described in any one of the above-mentioned embodiments 1 and 2, in accordance with a fourth embodiment of the present invention. The PEMS test (Portable Emission Measurement System) is a testing method used to measure pollutant emissions from motor vehicles or non-road mobile machinery during actual driving or operation. This test involves installing a portable emission measurement device on the vehicle or machinery to collect real-time exhaust pollutant concentrations (such as CO, CO2, NOx, and PM). This test then evaluates emissions performance based on vehicle operating parameters (such as speed, acceleration, engine load) and environmental data (such as temperature, humidity, and altitude). Specifically, a comparison of emission performance data from a vehicle with urea-based range enhancement and a vehicle without urea-based range enhancement clearly shows that the vehicle with urea-based range enhancement significantly outperforms the vehicle without urea-based range enhancement in most data points, and both meet the requirements of the "Emission Limits and Measurement Methods of Pollutants for Heavy-Duty Diesel Vehicles (China Phase VI)" standard.

[0051] Example 5 Another aspect of the present invention further provides a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of the above-mentioned embodiments one to three.

[0052] Example 6 Another aspect of the present invention is to provide a device for improving the urea driving range. Figure 5 As shown, the device for improving the cruising range of urea includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the method described in any one of the above embodiments one to three are implemented.

[0053] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] Those skilled in the art will appreciate that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device.

[0055] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting, or processing it in another suitable manner as necessary, and then storing it in a computer memory.

[0056] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware or a combination thereof.

[0057] In the above-described embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following technologies known in the art may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A method for improving urea mileage, characterized in that: The method comprises: acquiring, in real time, status information of the current vehicle during operation, and determining whether the status information satisfies preset parameter conditions, wherein the status information includes at least an actual urea consumption rate of the current vehicle during operation, and the preset parameter conditions include at least a pre-calibrated target urea consumption rate of the current vehicle during operation; If so, the vehicle ECU calculates and determines whether the actual urea consumption rate is greater than the target urea consumption rate; If so, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

2. The method for improving urea cruising range according to claim 1, characterized in that: The vehicle status information also includes vehicle speed, engine speed, engine operating mode, post-processing system status, and fault status information.

3. The method for improving urea cruising range according to claim 2, characterized in that: The preset parameter conditions also include a preset speed limit corresponding to the vehicle speed, a preset speed limit corresponding to the engine speed, a preset mode condition corresponding to the engine mode, a preset system condition corresponding to the post-processing system state, and a preset fault condition corresponding to the fault state.

4. The method for improving urea cruising range according to claim 3, characterized in that: The step of obtaining the current status information of the vehicle during operation in real time and determining whether the status information meets the preset parameter conditions also includes: A first judging unit is configured to judge whether the vehicle speed is greater than or equal to the preset speed limit; If yes, execute the second judgment unit; A second determining unit is configured to determine whether the engine speed is greater than or equal to the preset speed limit; If yes, the third judgment unit is executed.

5. The method for improving urea cruising range according to claim 4, characterized in that: After the step of determining whether the vehicle speed is greater than or equal to the preset speed limit, the following step is further included: A third judging unit is configured to judge whether the engine mode meets any one of the preset mode conditions; If it is consistent, the fourth judgment unit is executed.

6. The method for improving urea cruising range according to claim 5, characterized in that: After the step of determining whether the engine mode meets any of the preset mode conditions, the method further includes: A fourth determination unit is configured to determine whether the post-processing system state satisfies any one of the preset system conditions; If it is met, the fifth judgment unit is executed.

7. The method for improving urea cruising range according to claim 6, characterized in that: After the step of determining whether the post-processing system state meets any of the preset system conditions, the following step further comprises: A fifth determining unit: determining whether the fault state is different from the fault condition; If so, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

8. A system for improving urea cruising range, used to implement the method for improving urea cruising range as claimed in any one of claims 1 to 7, characterized in that: The system comprises: an acquisition and judgment module for acquiring status information of the current vehicle during operation in real time and judging whether the status information satisfies a preset parameter condition; if so, executing a first execution module, wherein the status information at least includes an actual urea consumption rate of the current vehicle during operation, and the preset parameter condition at least includes a pre-calibrated target urea consumption rate of the current vehicle during operation; a first execution module, calculating, by a vehicle ECU, whether the actual urea consumption rate is greater than the target urea consumption rate, and if so, executing a second execution module; In the second execution module, the urea endurance control function is activated and the engine operation mode is switched to the urea consumption control mode.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for improving the urea cruising range as claimed in any one of claims 1 to 7 is implemented.

10. A device for improving urea mileage, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the program, the method for improving the urea cruising range as claimed in any one of claims 1 to 7 is implemented.

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