Fault processing method of hybrid electric vehicle, hybrid electric vehicle, equipment and medium
By detecting engine air leakage faults in hybrid vehicles and using integrated start generator to drag the engine to start, the problem of the engine not being started and operated normally is solved, and the normal maintenance and use of the car is achieved.
Patent Information
- Application Number
- CN202311097077.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-28
- Publication Date
- 2025-02-28
AI Technical Summary
The engine leakage failure in hybrid vehicles causes the engine to fail to start and operate normally, which in turn affects the normal use and maintenance of the car.
By detecting whether there is a leak fault in the engine, the integrated start generator drags the engine to start, and controls the preset components of the engine according to the preset control parameters to ensure that the engine can be started and run in the event of a leak fault.
It realizes the active detection of air leakage failures in hybrid vehicle engines and successfully starts the engine when there is air leakage failure, so that the car can go to the service station for repairs.
Smart Images
Figure CN119527273A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of automobile technology, and in particular to a hybrid vehicle fault handling method, a hybrid vehicle, a device and a medium. Background Art
[0002] With the development of automobile technology, the number of hybrid vehicles is increasing. Hybrid vehicles can be driven by both electricity and fuel, which gives them more advantages than traditional vehicles.
[0003] However, in a hybrid vehicle, when a leak occurs behind the throttle valve of the engine, the engine usually cannot start and run normally, which in turn causes the hybrid vehicle to be unable to go to a service station for repair, affecting the normal use of the vehicle. Summary of the invention
[0004] In view of the above problems, a hybrid vehicle fault handling method, a hybrid vehicle, a device and a medium are proposed to overcome the above problems or at least partially solve the above problems, including:
[0005] A method for troubleshooting a hybrid vehicle, wherein the hybrid vehicle is equipped with an engine and an integrated starter generator, the method comprising:
[0006] Check whether the engine has air leakage;
[0007] In the event of an air leakage fault in the engine, preset components of the engine are controlled according to preset control parameters, and the engine is started by dragging the integrated starter generator.
[0008] Optionally, detecting whether the engine has an air leakage fault includes:
[0009] Acquiring a first intake pressure of the engine, the first intake pressure being the intake pressure after the engine is driven to a first preset speed by the integrated starter-generator and a throttle valve of the engine is closed;
[0010] It is detected whether the engine has an air leakage fault according to the first intake pressure and the reference intake pressure.
[0011] Optionally, detecting whether the engine has an air leakage fault according to the first intake pressure and the reference intake pressure includes:
[0012] When the difference between the first intake pressure and the reference intake pressure is greater than a preset pressure value, it is determined that an air leakage fault exists in the engine.
[0013] Optionally, before starting the engine by driving the integrated starter-generator, the method further includes:
[0014] Acquire multiple control parameters; wherein each of the multiple control parameters corresponds to a throttle valve opening;
[0015] Determine a target throttle valve opening, and determine a target control parameter corresponding to the target throttle valve opening from a plurality of control parameters as a preset control parameter;
[0016] Also includes:
[0017] In the event that starting the engine by dragging the integrated starter-generator fails, the preset control parameters are updated, and during the process of starting the engine by dragging the integrated starter-generator again, the preset components of the engine are controlled according to the updated preset control parameters.
[0018] Optionally, different control parameters correspond to different throttle valve openings, and updating the preset control parameters includes:
[0019] Update the preset control parameters in the order of throttle valve opening from large to small.
[0020] Optionally, it also includes:
[0021] Before starting the engine again by using the integrated starter generator to drive it, the engine is driven by the integrated starter generator to clean the cylinder.
[0022] Optionally, it also includes:
[0023] When the engine is successfully started by the integrated starter generator, control continues according to the preset control parameters until the engine's front oxygen sensor is detected to be normally usable, and closed-loop control is performed according to the air-fuel ratio.
[0024] Optionally, it also includes:
[0025] When the engine is started successfully by dragging the integrated starter-generator, the engine speed is controlled by the integrated starter-generator, and electricity is generated by the integrated starter-generator.
[0026] Optionally, the preset control parameters include:
[0027] The amount of fuel injected by the injector.
[0028] A hybrid vehicle is provided with an engine and an integrated starter generator, and is also provided with a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the above-mentioned hybrid vehicle fault handling method is implemented.
[0029] An electronic device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the above hybrid vehicle fault handling method is implemented.
[0030] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the hybrid vehicle fault handling method described above is implemented.
[0031] The embodiments of the present invention have the following advantages:
[0032] In an embodiment of the present invention, by detecting whether the engine has an air leakage fault, in the case of an air leakage fault in the engine, preset components of the engine are controlled according to preset control parameters, and the engine is started by dragging the engine through the integrated starter generator, thereby actively detecting the engine air leakage fault of the hybrid vehicle and starting and running the engine in the case of an air leakage fault, thereby enabling the hybrid vehicle to go to a service station for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.
[0034] Figure 1 is a flowchart of a hybrid vehicle fault handling method provided by an embodiment of the present invention;
[0035] Figure 2 is a flowchart of another hybrid vehicle fault handling method provided by an embodiment of the present invention;
[0036] Figure 3 is a flowchart of another hybrid vehicle fault handling method provided by an embodiment of the present invention;
[0037] Figure 4 It is a flowchart of the steps of another hybrid vehicle fault handling method provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0038] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0039] Reference Figure 1, showing a flow chart of steps of a fault handling method for a hybrid vehicle provided by an embodiment of the present invention, the hybrid vehicle is deployed with an engine and an integrated starter generator (ISG, Integrated Starter Generator), and the integrated starter generator is directly integrated on the main shaft of the engine.
[0040] Specifically, the following steps may be included:
[0041] Step 101, detecting whether there is an air leakage fault in the engine.
[0042] When the engine is in shutdown conditions such as flameout or fuel cut-off, it is possible to detect whether the engine has an air leakage fault, that is, whether there is an air leakage fault in the pipeline behind the throttle valve of the engine.
[0043] As an example, shutdown conditions include any of the following:
[0044] Flame-out condition and fuel cut-off condition.
[0045] In one example, whether there is an air leakage fault may be detected each time the engine enters a shutdown condition, or whether there is an air leakage fault may be detected at a preset time interval.
[0046] In one embodiment of the present invention, detecting whether an engine has an air leakage fault includes:
[0047] Obtain a first intake pressure of the engine; and detect whether the engine has an air leakage fault based on the first intake pressure and a reference intake pressure.
[0048] The first intake pressure is the intake pressure after the engine is dragged to a first preset speed by the integrated starter-generator and the throttle valve of the engine is closed.
[0049] As an example, the first preset rotation speed may be 1500 rpm to 2000 rpm.
[0050] Among them, the reference intake pressure is pre-calibrated, and the reference intake pressure of engines of different models may be different. The reference intake pressure is the intake pressure when the engine is at a first preset speed and there is no air leakage fault in the engine. The reference intake pressure is less than the atmospheric pressure.
[0051] During the testing phase, the intake pressure of an engine that does not have an air leakage fault can be tested on an engine test bench, and the intake pressure obtained from the test can be used as a benchmark intake pressure for engines of the same model. Specifically, the engine can be dragged to a first preset speed on the engine test bench with the throttle valve of the engine fully closed, and then the intake pressure of the engine can be collected.
[0052] In practical applications, the engine can be dragged to a first preset speed by the integrated starter generator, and then the throttle valve of the engine can be closed, and the first intake pressure can be measured by the pressure sensor.
[0053] Since at the same speed, the intake pressure when there is an air leakage fault is different from the intake pressure when there is no air leakage fault. Specifically, negative pressure will appear when there is an air leakage fault, which makes the intake pressure when there is an air leakage fault greater than the intake pressure when there is no air leakage fault.
[0054] After obtaining the first intake pressure, it is possible to determine whether the engine has an air leakage fault by comparing the first intake pressure with the reference intake pressure.
[0055] In one embodiment of the present invention, detecting whether the engine has an air leakage fault according to the first intake pressure and the reference intake pressure includes:
[0056] When the difference between the first intake pressure and the reference intake pressure is greater than a preset pressure value, it is determined that an air leakage fault exists in the engine.
[0057] As an example, the preset pressure value may be 100 kPa.
[0058] In practical applications, there may be errors in the measurement of intake pressure, so the difference between the first intake pressure and the reference intake pressure (ie, the pressure value of the first intake pressure being greater than the reference intake pressure) can be determined, and then it can be determined whether the difference is greater than a preset pressure value.
[0059] When the difference is greater than the preset pressure value, it is determined that the engine has an air leakage fault. When the difference is less than or equal to the preset pressure value, it is determined that the engine does not have an air leakage fault.
[0060] In an embodiment of the present invention, the intake pressure when the throttle valve is closed is tested by using an integrated starter-generator to drag the engine, and is compared with a reference intake pressure to determine whether the engine has an air leakage fault, thereby realizing active detection of air leakage faults without disassembling the intake system.
[0061] Step 102, when there is an air leakage fault in the engine, the preset components of the engine are controlled according to the preset control parameters, and the engine is started by driving the integrated starter and generator.
[0062] As an example, the predetermined component is a fuel injector.
[0063] The preset control parameters include: the fuel injection amount of the injector.
[0064] In the event of an engine leak, the engine may not be able to start and run normally. In this case, the engine can be started by dragging it with an integrated starter generator.
[0065] In actual applications, since there are different amounts of air leakage faults, and the control parameters required for starting are different under different amounts of air leakage faults, for example, different amounts of air leakage faults lead to different intake volumes, and thus lead to different required fuel intake volumes, then the preset control parameters can be selected according to the specific circumstances of the air leakage fault to control the engine starting process, thereby ensuring that the engine can start successfully.
[0066] In one embodiment of the present invention, before the engine is started by the integrated starter-generator, the method further includes:
[0067] In the event of an engine leak, determine whether the engine fails to start, and if the engine fails to start, start the engine by dragging it through the integrated starter generator.
[0068] When the air leakage fault is first detected, the engine may be able to start normally (not through the integrated starter generator to start) and run due to the small amount of air leakage fault. In this case, if the engine has an air leakage fault, you can try to start the engine normally.
[0069] If the engine starts and runs normally, the driver can drive the vehicle to a service station for repair. If the engine fails to start normally, the driver can enter the emergency start condition, that is, the integrated starter generator is used to drag the engine to start and run.
[0070] In one example, in the case of an air leakage fault, an air leakage fault message is sent through an ECU (Electronic Control Unit) and an air leakage fault alarm is displayed through a dashboard.
[0071] In one embodiment of the present invention, before the engine is started by the integrated starter-generator, the method further includes:
[0072] Acquire multiple control parameters; determine a target throttle valve opening, and determine a target control parameter corresponding to the target throttle valve opening from the multiple control parameters as a preset control parameter.
[0073] The plurality of control parameters each correspond to a throttle valve opening, and the plurality of control parameters are control parameters when the engine can start normally and run stably under different throttle valve openings.
[0074] For example, the control parameters when the throttle valve opening is 50%, 40%, 30%, 20%, and 10%.
[0075] During the test phase, different throttle valve openings can be used to simulate different amounts of air leakage failures. Different throttle valve openings can be set for engines that do not have air leakage failures. Then, the control parameters that can be started normally and run stably at different throttle valve openings are tested. The control parameters obtained from the test are associated with the corresponding throttle valve openings and stored in the ECU for subsequent use.
[0076] For example, the larger the throttle valve opening, the greater the simulated air leakage fault amount, the greater the negative pressure in the engine, and the more external gas enters, and the more fuel intake is required.
[0077] In practical applications, a target throttle valve opening can be selected, and then a target control parameter corresponding to the target throttle valve opening can be selected from multiple control parameters as a preset control parameter.
[0078] In the embodiment of the present invention, the starting process of the engine is controlled by using the control parameters obtained by the test, so that the experimental starting is performed using the preset data, thereby improving the starting efficiency.
[0079] In one embodiment of the present invention, it also includes:
[0080] In the event that starting the engine by dragging the integrated starter-generator fails, the preset control parameters are updated, and during the process of starting the engine by dragging the integrated starter-generator again, the preset components of the engine are controlled according to the updated preset control parameters.
[0081] After starting the engine by dragging the integrated starter generator, there may be a starting failure. The starting failure is usually due to the incompatibility between the preset control parameters and the leakage fault amount of the leakage fault. In this case, the preset control parameters can be updated, and then the engine can be started by dragging the integrated starter generator again. In the process of starting the engine again by dragging the integrated starter generator, the updated preset control parameters can be used for control, such as using the updated fuel intake amount to control the fuel intake, until the start is successful.
[0082] In one embodiment of the present invention, different control parameters correspond to different throttle valve openings, and updating the preset control parameters includes:
[0083] Update the preset control parameters in the order of throttle valve opening from large to small.
[0084] In actual applications, if the engine cannot start, there is usually a large air leakage fault, that is, the amount of air leakage fault is large, and the larger the throttle valve opening, the larger the simulated air leakage fault amount. You can start by trying the control parameters corresponding to the largest throttle valve opening, such as starting from the control parameters corresponding to 50% throttle valve opening, and select the control parameters corresponding to smaller throttle valve openings in turn as the preset control parameters.
[0085] In one embodiment of the present invention, it also includes:
[0086] Before starting the engine again by using the integrated starter generator to drive it, the engine is driven by the integrated starter generator to clean the cylinder.
[0087] In the event that the engine fails to be started by dragging the integrated starter generator, there will usually be fuel left in the engine cylinder from the previous start, which will affect the amount of fuel at the next start. The integrated starter generator can be used to drag the engine to clean the cylinder.
[0088] In one embodiment of the present invention, it also includes:
[0089] When the engine is successfully started by the integrated starter generator, control continues according to the preset control parameters until the engine's front oxygen sensor is detected to be normally usable, and closed-loop control is performed according to the air-fuel ratio.
[0090] When the engine is successfully started by using the integrated starter generator, it is possible to detect whether the engine's front oxygen sensor can be used normally. The front oxygen sensor can be used normally when the dew point is exceeded.
[0091] If the front oxygen sensor of the engine cannot be used normally, control can continue to be performed according to the preset control parameters. If the front oxygen sensor of the engine can be used normally, the current air-fuel ratio can be collected through the front oxygen sensor, and then closed-loop control can be performed with the goal of the current air-fuel ratio tending to 1, that is, the ratio of the intake air volume and the intake fuel volume is controlled to tend to 1.
[0092] In one embodiment of the present invention, it also includes:
[0093] When the engine is started successfully by dragging the integrated starter-generator, the engine speed is controlled by the integrated starter-generator, and electricity is generated by the integrated starter-generator.
[0094] When the engine is successfully started by dragging the integrated starter generator, the intake volume is uncontrollable due to an air leakage fault in the engine. Since the intake volume cannot be controlled, the engine speed cannot be controlled. The engine speed can be controlled by the integrated starter generator, such as controlling the engine to a second preset speed, such as 3000rpm to 4000rpm.
[0095] Under the action of the engine, the integrated starter generator can be driven to rotate, and then the integrated starter generator can generate electricity.
[0096] In an embodiment of the present invention, by detecting whether the engine has an air leakage fault, in the case of an air leakage fault in the engine, preset components of the engine are controlled according to preset control parameters, and the engine is started by dragging the engine through the integrated starter generator, thereby actively detecting the engine air leakage fault of the hybrid vehicle and starting and running the engine in the case of an air leakage fault, thereby enabling the hybrid vehicle to go to a service station for maintenance.
[0097] Reference Figure 2 , shows a flowchart of another hybrid vehicle fault handling method provided by an embodiment of the present invention, which may specifically include the following steps:
[0098] Step 201, detecting whether there is an air leakage fault in the engine.
[0099] When the engine is in shutdown conditions such as flameout or fuel cut-off, it is possible to detect whether the engine has an air leakage fault, that is, whether there is an air leakage fault in the pipeline behind the throttle valve of the engine.
[0100] Step 202, when there is an air leakage fault in the engine, the preset components of the engine are controlled according to the preset control parameters, and the engine is started by driving the integrated starter and generator.
[0101] In the event of an engine leak, the engine may not be able to start and run normally. In this case, the engine can be started by dragging it with an integrated starter generator.
[0102] In actual applications, since there are different amounts of air leakage faults, and the control parameters required for starting are different under different amounts of air leakage faults, for example, different amounts of air leakage faults lead to different intake volumes, and thus lead to different required fuel intake volumes, then the preset control parameters can be selected according to the specific circumstances of the air leakage fault to control the engine starting process, thereby ensuring that the engine can start successfully.
[0103] Step 203, when the engine is successfully started by the integrated starter and generator, the control is continued according to the preset control parameters until the front oxygen sensor of the engine is detected to be able to be used normally, and closed-loop control is performed according to the air-fuel ratio.
[0104] When the engine is successfully started by using the integrated starter generator, it is possible to detect whether the engine's front oxygen sensor can be used normally. The front oxygen sensor can be used normally when the dew point is exceeded.
[0105] If the front oxygen sensor of the engine cannot be used normally, control can continue to be performed according to the preset control parameters. If the front oxygen sensor of the engine can be used normally, the current air-fuel ratio can be collected through the front oxygen sensor, and then closed-loop control can be performed with the goal of the current air-fuel ratio tending to 1, that is, the ratio of the intake air volume and the intake fuel volume is controlled to tend to 1.
[0106] Step 204, controlling the speed of the engine by means of the integrated starter-generator, and generating electricity by means of the integrated starter-generator.
[0107] When the engine is successfully started by dragging the integrated starter generator, the intake volume is uncontrollable due to an air leakage fault in the engine. Since the intake volume cannot be controlled, the engine speed cannot be controlled. The engine speed can be controlled by the integrated starter generator, such as controlling the engine to a second preset speed, such as 3000rpm to 4000rpm.
[0108] Under the action of the engine, the integrated starter generator can be driven to rotate, and then the integrated starter generator can generate electricity.
[0109] Reference Figure 3 , shows a flowchart of another hybrid vehicle fault handling method provided by an embodiment of the present invention, which may specifically include the following steps:
[0110] Step 301, detect whether the engine has a gas leakage fault.
[0111] When the engine is in shutdown conditions such as flameout or fuel cut-off, it is possible to detect whether the engine has an air leakage fault, that is, whether there is an air leakage fault in the pipeline behind the throttle valve of the engine.
[0112] Step 302, when there is an air leakage fault in the engine, the preset components of the engine are controlled according to the preset control parameters, and the engine is started by driving the integrated starter and generator.
[0113] In the event of an engine leak, the engine may not be able to start and run normally. In this case, the engine can be started by dragging it with an integrated starter generator.
[0114] In actual applications, since there are different amounts of air leakage faults, and the control parameters required for starting are different under different amounts of air leakage faults, for example, different amounts of air leakage faults lead to different intake volumes, and thus lead to different required fuel intake volumes, then the preset control parameters can be selected according to the specific circumstances of the air leakage fault to control the engine starting process, thereby ensuring that the engine can start successfully.
[0115] Step 303, when the engine startup by the integrated starter-generator fails, before the engine startup by the integrated starter-generator is started again, the engine is started by the integrated starter-generator to perform a cylinder cleaning process.
[0116] In the event that the engine fails to be started by dragging the integrated starter generator, there will usually be fuel left in the engine cylinder from the previous start, which will affect the amount of fuel at the next start. The integrated starter generator can be used to drag the engine to clean the cylinder.
[0117] Step 304, updating the preset control parameters, and in the process of starting the engine again by dragging the integrated starter-generator, controlling the preset components of the engine according to the updated preset control parameters.
[0118] After starting the engine by dragging the integrated starter generator, there may be a starting failure. The starting failure is usually due to the incompatibility between the preset control parameters and the leakage fault amount of the leakage fault. In this case, the preset control parameters can be updated, and then the engine can be started by dragging the integrated starter generator again. In the process of starting the engine again by dragging the integrated starter generator, the updated preset control parameters can be used for control, such as using the updated fuel intake amount to control the fuel intake, until the start is successful.
[0119] Reference Figure 4 , shows a flowchart of another hybrid vehicle fault handling method provided by an embodiment of the present invention, which may specifically include the following steps:
[0120] Step 401, obtaining a first intake pressure of the engine, where the first intake pressure is the intake pressure after the engine is dragged to a first preset speed by the integrated starter-generator and the throttle valve of the engine is closed.
[0121] Step 402: When the difference between the first intake pressure and the reference intake pressure is greater than a preset pressure value, it is determined that the engine has an air leakage fault.
[0122] The reference intake pressure is the intake pressure when the engine is at a first preset speed and there is no air leakage fault in the engine.
[0123] During the testing phase, the intake pressure of an engine that does not have an air leakage fault can be tested on an engine test bench, and the intake pressure obtained from the test can be used as a benchmark intake pressure for engines of the same model. Specifically, the engine can be dragged to a first preset speed on the engine test bench with the throttle valve of the engine fully closed, and then the intake pressure of the engine can be collected.
[0124] In practical applications, the engine can be dragged to a first preset speed by the integrated starter generator, and then the throttle valve of the engine can be closed, and the first intake pressure can be measured by the pressure sensor.
[0125] Because at the same speed, the intake pressure when there is an air leakage fault is different from the intake pressure when there is no air leakage fault. Specifically, negative pressure will appear when there is an air leakage fault, which makes the intake pressure when there is an air leakage fault greater than the intake pressure when there is no air leakage fault.
[0126] After obtaining the first intake pressure, it is possible to determine whether the engine has an air leakage fault by comparing the first intake pressure with the reference intake pressure.
[0127] In practical applications, there may be errors in the measurement of intake pressure, so the difference between the first intake pressure and the reference intake pressure (ie, the pressure value of the first intake pressure being greater than the reference intake pressure) can be determined, and then it can be determined whether the difference is greater than a preset pressure value.
[0128] When the difference is greater than the preset pressure value, it is determined that the engine has an air leakage fault. When the difference is less than or equal to the preset pressure value, it is determined that the engine does not have an air leakage fault.
[0129] In an embodiment of the present invention, the intake pressure when the throttle valve is closed is tested by using an integrated starter-generator to drag the engine, and is compared with a reference intake pressure to determine whether the engine has an air leakage fault, thereby realizing active detection of air leakage faults without disassembling the intake system.
[0130] Step 403, when there is an air leakage fault in the engine, the preset components of the engine are controlled according to the preset control parameters, and the engine is started by driving the integrated starter and generator.
[0131] In the event of an engine leak, the engine may not be able to start and run normally. In this case, the engine can be started by dragging it with an integrated starter generator.
[0132] In actual applications, since there are different amounts of air leakage faults, and the control parameters required for starting are different under different amounts of air leakage faults, for example, different amounts of air leakage faults lead to different intake volumes, and thus lead to different required fuel intake volumes, then the preset control parameters can be selected according to the specific circumstances of the air leakage fault to control the engine starting process, thereby ensuring that the engine can start successfully.
[0133] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.
[0134] An embodiment of the present invention further provides a hybrid vehicle, which is equipped with an engine and an integrated starter generator, and is also equipped with a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the above-mentioned hybrid vehicle fault handling method is implemented.
[0135] An embodiment of the present invention further provides an electronic device, which may include a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the above hybrid vehicle fault handling method is implemented.
[0136] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the hybrid vehicle fault handling method as described above is implemented.
[0137] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.
[0138] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.
[0139] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0140] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
[0141] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.
[0142] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.
[0143] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.
[0144] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.
[0145] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the above elements.
[0146] The above provides a detailed introduction to a hybrid vehicle fault handling method, a hybrid vehicle, a device and a medium. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for a person skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A method for troubleshooting a hybrid vehicle, characterized in that: The hybrid vehicle is equipped with an engine and an integrated starter generator, and the method includes: Detecting whether the engine has an air leakage fault; In the event that the engine has an air leakage fault, preset components of the engine are controlled according to preset control parameters, and the engine is started by driving the integrated starter-generator.
2. The method according to claim 1, characterized in that The detecting whether the engine has an air leakage fault comprises: Acquiring a first intake pressure of the engine, the first intake pressure being the intake pressure after the engine is driven to a first preset speed by the integrated starter-generator and a throttle valve of the engine is closed; According to the first intake pressure and a reference intake pressure, it is detected whether the engine has an air leakage fault.
3. The method according to claim 2, characterized in that The detecting whether the engine has an air leakage fault according to the first intake pressure and the reference intake pressure includes: When the difference between the first intake pressure and the reference intake pressure is greater than a preset pressure value, it is determined that the engine has an air leakage fault.
4. The method according to claim 1, characterized in that: Before the engine is started by the integrated starter-generator, the method further includes: Acquire multiple control parameters; wherein each of the multiple control parameters corresponds to a throttle valve opening; Determining a target throttle valve opening, and determining a target control parameter corresponding to the target throttle valve opening from the plurality of control parameters as a preset control parameter; Also includes: In the event that starting the engine by dragging it through the integrated starter-generator fails, the preset control parameters are updated, and during the process of starting the engine again by dragging it through the integrated starter-generator, the preset components of the engine are controlled according to the updated preset control parameters.
5. The method according to claim 4, characterized in that Different control parameters correspond to different throttle valve openings, and the updating of the preset control parameters includes: The preset control parameters are updated in the order of throttle valve opening from large to small.
6. The method according to claim 4, characterized in that Also includes: Before the engine is started again by the integrated starter-generator, the engine is driven by the integrated starter-generator to perform a cylinder cleaning process.
7. The method according to any one of claims 1 to 4, characterized in that: Also includes: When the engine is successfully started by the integrated starter and generator, the control is continued according to the preset control parameters until the front oxygen sensor of the engine is detected to be normally used, and closed-loop control is performed according to the air-fuel ratio.
8. The method according to any one of claims 1 to 4, characterized in that: Also includes: When the engine is started successfully by dragging the integrated starter-generator, the rotation speed of the engine is controlled by the integrated starter-generator, and the integrated starter-generator generates electricity.
9. The method according to claim 1, characterized in that: The preset control parameters include: The amount of fuel injected by the injector.
10. A hybrid vehicle, characterized in that: The hybrid vehicle is equipped with an engine and an integrated starter generator, and is also equipped with a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, a fault handling method for a hybrid vehicle as described in any one of claims 1 to 9 is implemented.
11. An electronic device, characterized in that: The method comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the method for handling a fault of a hybrid vehicle as claimed in any one of claims 1 to 9 is implemented.
12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the fault handling method for a hybrid vehicle according to any one of claims 1 to 9 is implemented.