Plug-in hybrid vehicle type engine adaptive control method and system

Abstract

The invention relates to the field of automobile control, and provides a plug-in hybrid vehicle type engine self-adaptive control method and system, the start-stop frequency of an engine is calculated by memorizing the start-stop state of the engine of a vehicle within a preset time, and the start-stop frequency of the engine is calculated from the actual running state of the vehicle and the actual working state of the engine. The minimum running time of the engine is adjusted, meanwhile, the fuel consumption value of the engine for power generation is corrected from the battery state, then the fuel consumption value of the engine for assisting power is corrected from the internal and external temperature conditions of the vehicle, fuel economy is improved, and meanwhile it is avoided that the engine continuously works in the cold machine state, and the service life of the engine is prolonged. And the running health of the engine is protected, and the fuel economy of the plug-in hybrid vehicle type engine and the running efficiency of the engine are improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile control, and in particular to a method and system for adaptively controlling an engine of a plug-in hybrid vehicle. Background Art

[0002] With the rapid development of the automobile industry, plug-in hybrid vehicles have gradually become an important mainstream new energy vehicle model. An important aspect of plug-in hybrid vehicles is the fuel economy of the vehicle. Therefore, engine control, which is most closely related to fuel economy, has naturally become a highly concerned aspect.

[0003] In the prior art, in order to achieve better fuel economy, frequent starting and stopping of the engine is usually avoided. Therefore, a fixed minimum engine operating time is usually set to ensure that the engine does not stop immediately after starting. However, this fixed time in the prior art cannot be adjusted according to the actual operating status of the vehicle, resulting in the fuel economy curve not being able to fit the engine's operating status well.

[0004] Therefore, how to design a plug-in hybrid vehicle engine control method to adjust according to the actual operating status of the vehicle to improve fuel economy and engine operating efficiency has become an urgent problem to be solved. Summary of the invention

[0005] Based on this, the present invention proposes a plug-in hybrid vehicle engine adaptive control method and system, which calculates the engine start and stop frequency by memorizing the engine start and stop status of the vehicle within a preset time, so as to adjust the minimum engine operating time based on the actual operating status of the vehicle and the actual working status of the engine, and at the same time, based on the battery status, corrects the fuel consumption value of the engine for power generation, and then based on the internal and external temperature conditions of the vehicle, corrects the fuel consumption value of the engine for power assistance, thereby improving fuel economy and avoiding continuous operation in a cold state, thereby protecting the healthy operation of the engine. The present invention improves the fuel economy and engine operating efficiency of the plug-in hybrid vehicle engine.

[0006] The present invention provides a plug-in hybrid vehicle engine adaptive control method, comprising: Collect vehicle operation data and comprehensive vehicle data; Performing engine start / stop judgment according to the vehicle operation data, the engine start / stop judgment being based on a preset engine start / stop parameter threshold list; When it is determined that the engine is started, a weighted calculation of the minimum engine running time is performed according to the vehicle comprehensive data to obtain a weighted value of the minimum engine running time, wherein the weighted calculation of the minimum engine running time is used to assign weights to different vehicle comprehensive data; The minimum engine running time is adjusted according to the minimum engine running time weight value.

[0007] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the engine start and stop status of the vehicle within a preset time, the engine start and stop frequency is calculated, so as to adjust the minimum engine running time based on the actual running state of the vehicle and the actual working state of the engine, and at the same time, based on the battery state, correct the fuel consumption value of the engine for power generation, and then based on the internal and external temperature conditions of the vehicle, correct the fuel consumption value of the engine for power assistance, thereby improving fuel economy and avoiding continuous operation in a cold state, thereby protecting the healthy operation of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine. Specifically, vehicle operation data and vehicle comprehensive data are collected, and multiple actual operation directions of the vehicle are considered to make the adaptive adjustment more in line with the actual driving operation state. The engine start and stop judgment is made according to the vehicle operation data. The engine start and stop judgment is based on a preset engine start and stop parameter threshold list. The engine start and stop timing is accurately judged according to the preset engine start and stop parameter threshold list, thereby avoiding untimely engine start and stop. When it is determined that the engine is started, a weighted calculation of the engine minimum operation time is performed according to the vehicle comprehensive data to obtain a weighted value of the engine minimum operation time. The weighted calculation of the engine minimum operation time is used to assign weights to different vehicle comprehensive data. The engine minimum operation time is weightedly calculated from multiple directions, thereby making the overall adjustment more in line with the purpose of maximizing fuel economy. The engine minimum operation time is adjusted according to the engine minimum operation time weighted value, thereby improving fuel economy. At the same time, it avoids continuous operation in a cold state, thereby protecting the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0008] Furthermore, the step of collecting vehicle operation data and vehicle comprehensive data specifically includes: Real-time detection of a vehicle speed parameter and a throttle opening parameter of the current vehicle, and then calculation of a vehicle output torque parameter according to the throttle opening parameter; generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter; Collecting comprehensive temperature parameters within a first preset time, wherein the comprehensive temperature parameters include a water tank temperature parameter, an oil tank temperature parameter, and an ambient temperature parameter; Detecting comprehensive battery parameters of the battery pack, wherein the comprehensive battery parameters include remaining power parameters and power change parameters; Retrieving engine start / stop parameters within a first preset time in a vehicle operation database, wherein the engine start / stop parameters include the number of engine starts / stops and engine start / stop time points; Vehicle comprehensive data is generated according to the comprehensive temperature parameter, the comprehensive battery parameter and the engine start-stop parameter.

[0009] Furthermore, the step of determining whether to start or stop the engine according to the vehicle operation data specifically includes: Keying is performed according to a vehicle speed parameter and a vehicle output torque parameter in the vehicle operation data; A search is performed in a preset engine start / stop parameter threshold list according to a key value matching mechanism, and if a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start command is sent to the engine control module.

[0010] Furthermore, when it is determined that the engine is started, the step of performing a weighted calculation of the minimum engine running time according to the vehicle comprehensive data to obtain a weighted value of the minimum engine running time specifically includes: When it is determined that the engine is started, the engine start-stop frequency is calculated according to the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value; Determining whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold; If the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a frequent start-stop state, and the engine assist fuel consumption value is calculated according to the engine start-stop frequency value; If it is determined that the engine start-stop frequency value is less than a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a temporary start-stop state, and the engine power generation fuel consumption value is calculated according to the engine start-stop frequency value; The engine assisting fuel consumption value and the engine generating fuel consumption value are balanced and optimized according to a preset fuel economy curve to obtain a weighted value of the engine minimum operating time fuel consumption, wherein the engine assisting fuel consumption value is positively correlated with the weighted value of the engine minimum operating time fuel consumption, and the engine generating fuel consumption value is negatively correlated with the weighted value of the engine minimum operating time fuel consumption.

[0011] Furthermore, the step of balancing and optimizing the engine assisting fuel consumption value and the engine generating fuel consumption value according to the preset fuel economy curve to obtain the weighted value of the engine minimum running time fuel consumption may further include: Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data; If the comprehensive battery parameter is greater than or equal to the preset battery safety threshold, it is determined that the current vehicle battery is in a high power state, and a negative correction is made to the engine power generation fuel consumption value according to the comprehensive battery parameter; If the comprehensive battery parameter is less than a preset battery safety threshold, it is determined that the current vehicle battery is in a low-battery state, and the engine power generation fuel consumption value is positively corrected according to the comprehensive battery parameter.

[0012] Furthermore, the step of balancing and optimizing the engine assisting fuel consumption value and the engine generating fuel consumption value according to the preset fuel economy curve to obtain the weighted value of the engine minimum running time fuel consumption may further include: Make engine running status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data; If the comprehensive temperature parameter is greater than or equal to the preset engine healthy operation threshold, it is determined that the current vehicle engine is in a warm-up operation state, and a negative correction is made to the engine auxiliary fuel consumption value according to the comprehensive temperature parameter; If the comprehensive temperature parameter is less than a preset engine healthy operation threshold, it is determined that the current vehicle engine is in a cold engine operation state, and the engine auxiliary fuel consumption value is positively corrected according to the comprehensive temperature parameter.

[0013] Furthermore, the step of adjusting the minimum engine running time according to the minimum engine running time weight value specifically includes: Calculate the minimum engine running time correction ratio according to the minimum engine running time weight value; Proportionally adjusting the minimum engine running time at the current moment according to the minimum engine running time correction ratio; When the engine control module receives a shutdown command, it delays operation according to the minimum engine operating time adjusted in proportion.

[0014] The present invention proposes a plug-in hybrid vehicle engine adaptive control system, comprising: A collection module is used to collect vehicle operation data and vehicle comprehensive data; A start-stop judgment module, used for making an engine start-stop judgment according to the vehicle operation data, wherein the engine start-stop judgment is based on a preset engine start-stop parameter threshold list; A weight calculation module, used for performing a weighted calculation of the minimum engine running time according to the vehicle comprehensive data when determining that the engine is started, so as to obtain a weighted value of the minimum engine running time, wherein the weighted calculation of the minimum engine running time is used to assign weights to different vehicle comprehensive data; The adjustment module is used to adjust the minimum engine operating time according to the minimum engine operating time weight value.

[0015] The present invention also provides a storage medium, wherein the storage medium stores one or more programs, and when the programs are executed by a processor, the above-mentioned plug-in hybrid vehicle engine adaptive control method is implemented.

[0016] The present invention also provides a computer device, the computer device comprising a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, the above-mentioned plug-in hybrid vehicle engine adaptive control method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of a plug-in hybrid vehicle engine adaptive control method proposed in the first embodiment of the present invention; Figure 2 This is a flow chart of a plug-in hybrid vehicle engine adaptive control method proposed in the second embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a plug-in hybrid vehicle engine adaptive control system proposed in the third embodiment of the present invention.

[0018] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] 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 a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] See also Figure 1, which is a flow chart of a plug-in hybrid vehicle engine adaptive control method according to a first embodiment of the present invention, wherein the plug-in hybrid vehicle engine adaptive control method comprises steps S01 to S04, wherein: Step S01: Collect vehicle operation data and vehicle comprehensive data; It should be noted that in this embodiment, the vehicle speed parameter and the throttle opening parameter of the current vehicle are detected in real time, and then the vehicle output torque parameter is calculated according to the throttle opening parameter; generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter; Collecting comprehensive temperature parameters within a first preset time, wherein the comprehensive temperature parameters include a water tank temperature parameter, an oil tank temperature parameter, and an ambient temperature parameter; Detecting comprehensive battery parameters of the battery pack, wherein the comprehensive battery parameters include remaining power parameters and power change parameters; Retrieving engine start / stop parameters within a first preset time in a vehicle operation database, wherein the engine start / stop parameters include the number of engine starts / stops and engine start / stop time points; Vehicle comprehensive data is generated according to the comprehensive temperature parameter, the comprehensive battery parameter and the engine start-stop parameter.

[0023] Step S02: determining whether to start or stop the engine according to vehicle operation data; It should be noted that in this embodiment, the vehicle speed parameter and the vehicle output torque parameter in the vehicle operation data are keyed; A search is performed in a preset engine start / stop parameter threshold list according to a key value matching mechanism, and if a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start command is sent to the engine control module.

[0024] Step S03: when it is determined that the engine is started, a weighted calculation of the minimum engine running time is performed according to the vehicle comprehensive data to obtain a weighted value of the minimum engine running time; It should be noted that in this embodiment, when it is determined that the engine is started, the engine start-stop frequency is calculated according to the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value; Determining whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold; If the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a frequent start-stop state, and the engine assist fuel consumption value is calculated according to the engine start-stop frequency value; If it is determined that the engine start-stop frequency value is less than a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a temporary start-stop state, and the engine power generation fuel consumption value is calculated according to the engine start-stop frequency value; The engine assisting fuel consumption value and the engine generating fuel consumption value are balanced and optimized according to a preset fuel economy curve to obtain a weighted value of the engine minimum running time fuel consumption, wherein the engine assisting fuel consumption value is positively correlated with the weighted value of the engine minimum running time fuel consumption, and the engine generating fuel consumption value is negatively correlated with the weighted value of the engine minimum running time fuel consumption; Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data; If the comprehensive battery parameter is greater than or equal to the preset battery safety threshold, it is determined that the current vehicle battery is in a high power state, and a negative correction is made to the engine power generation fuel consumption value according to the comprehensive battery parameter; If the comprehensive battery parameter is less than the preset battery safety threshold, it is determined that the current vehicle battery is in a low-power state, and the engine power generation fuel consumption value is positively corrected according to the comprehensive battery parameter; Make engine running status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data; If the comprehensive temperature parameter is greater than or equal to the preset engine healthy operation threshold, it is determined that the current vehicle engine is in a warm-up operation state, and a negative correction is made to the engine auxiliary fuel consumption value according to the comprehensive temperature parameter; If the comprehensive temperature parameter is less than a preset engine healthy operation threshold, it is determined that the current vehicle engine is in a cold engine operation state, and the engine auxiliary fuel consumption value is positively corrected according to the comprehensive temperature parameter.

[0025] Step S04: adjusting the minimum engine running time according to the minimum engine running time weight value; It should be noted that in this embodiment, the engine minimum running time correction ratio is calculated according to the engine minimum running time weight value; Proportionally adjusting the minimum engine running time at the current moment according to the minimum engine running time correction ratio; When the engine control module receives a shutdown command, it delays operation according to the minimum engine operating time adjusted in proportion.

[0026] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the engine start and stop status of the vehicle within a preset time, the engine start and stop frequency is calculated, so as to adjust the minimum engine running time based on the actual running state of the vehicle and the actual working state of the engine, and at the same time, based on the battery state, correct the fuel consumption value of the engine for power generation, and then based on the internal and external temperature conditions of the vehicle, correct the fuel consumption value of the engine for power assistance, thereby improving fuel economy and avoiding continuous operation in a cold state, thereby protecting the healthy operation of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine. Specifically, vehicle operation data and vehicle comprehensive data are collected, and multiple actual operation directions of the vehicle are considered to make the adaptive adjustment more in line with the actual driving operation state. The engine start and stop judgment is made according to the vehicle operation data. The engine start and stop judgment is based on a preset engine start and stop parameter threshold list. The engine start and stop timing is accurately judged according to the preset engine start and stop parameter threshold list, thereby avoiding untimely engine start and stop. When it is determined that the engine is started, a weighted calculation of the engine minimum operation time is performed according to the vehicle comprehensive data to obtain a weighted value of the engine minimum operation time. The weighted calculation of the engine minimum operation time is used to assign weights to different vehicle comprehensive data. The engine minimum operation time is weightedly calculated from multiple directions, thereby making the overall adjustment more in line with the purpose of maximizing fuel economy. The engine minimum operation time is adjusted according to the engine minimum operation time weighted value, thereby improving fuel economy. At the same time, it avoids continuous operation in a cold state, thereby protecting the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0027] See also Figure 2 , which is a flow chart of a plug-in hybrid vehicle engine adaptive control method according to a second embodiment of the present invention, wherein the plug-in hybrid vehicle engine adaptive control method comprises steps S11 to S16, wherein: Step S11: detecting the vehicle speed parameter and throttle opening parameter of the current vehicle in real time, calculating the vehicle output torque parameter according to the throttle opening parameter, generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter, collecting comprehensive temperature parameters within a first preset time, detecting comprehensive battery parameters of the battery pack, retrieving the engine start / stop parameters within the first preset time from the vehicle operation database, and generating comprehensive vehicle data; It should be noted that the first preset time in this embodiment is set to one minute to accurately detect the current water temperature, oil temperature and ambient temperature of the vehicle to avoid temperature changes caused by changes in driving scenes and interference with judgment. At the same time, the vehicle operation database includes all parameters of the vehicle operation and can store multiple engine start and stop parameters within the first preset time.

[0028] Step S12: keying the vehicle speed parameter and the vehicle output torque parameter in the vehicle operation data, searching in the preset engine start / stop parameter threshold list according to the key value matching mechanism, and sending a start command to the engine control module if there is a corresponding matching result for the search key of the vehicle speed parameter or the vehicle output torque parameter; It should be noted that the preset engine start-stop parameter threshold list in this embodiment is factory set and is used to determine whether engine assistance is needed to provide power support or generate electricity when the vehicle speed changes and the vehicle output torque changes (throttle opening changes).

[0029] Step S13: when it is determined that the engine is started, the engine start-stop frequency is calculated according to the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value, and it is determined whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold value. If the engine start-stop frequency value is greater than or equal to the first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a frequent start-stop state, and the engine assisting fuel consumption value is calculated according to the engine start-stop frequency value. If it is determined that the engine start-stop frequency value is less than the first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a temporary start-stop state, and the engine power generation fuel consumption value is calculated according to the engine start-stop frequency value. The engine assisting fuel consumption value and the engine power generation fuel consumption value are balanced and optimized according to the preset fuel economy curve to obtain the engine minimum running time fuel consumption weight value; It should be noted that the first preset engine start-stop frequency threshold in this embodiment uses the urban congestion scenario as a preset reference, and calculates the average engine start-stop frequency threshold of the urban congested road section in the navigation record as the first preset engine start-stop frequency threshold. The preset fuel economy curve in this embodiment is a standard function curve set at the factory, which is used to evaluate the fuel economy of the current vehicle engine.

[0030] Step S14: Perform power conservation judgment based on the comprehensive battery parameters in the comprehensive vehicle data. If the comprehensive battery parameters are greater than or equal to the preset battery safety threshold, it is determined that the current vehicle battery is in a high power state, and the engine power generation fuel consumption value is negatively corrected according to the comprehensive battery parameters. If the comprehensive battery parameters are less than the preset battery safety threshold, it is determined that the current vehicle battery is in a low power state, and the engine power generation fuel consumption value is positively corrected according to the comprehensive battery parameters. It should be noted that the preset battery safety threshold in this embodiment is 30% of the current total battery capacity.

[0031] Step S15: Perform engine operation state protection judgment according to the comprehensive temperature parameter in the vehicle comprehensive data. If the comprehensive temperature parameter is greater than or equal to the preset engine healthy operation threshold, it is determined that the current vehicle engine is in a warm-up operation state, and the engine auxiliary fuel consumption value is negatively corrected according to the comprehensive temperature parameter. If the comprehensive temperature parameter is less than the preset engine healthy operation threshold, it is determined that the current vehicle engine is in a cold operation state, and the engine auxiliary fuel consumption value is positively corrected according to the comprehensive temperature parameter. It should be noted that, in this embodiment, the preset engine healthy operation threshold is the standard operating temperature of the engine of the current vehicle model.

[0032] Step S16: Calculate the engine minimum running time correction ratio according to the engine minimum running time weight value, and proportionally adjust the engine minimum running time at the current moment according to the engine minimum running time correction ratio. When the engine control module receives a shutdown command, it delays the operation according to the proportionally adjusted engine minimum running time.

[0033] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the engine start and stop status of the vehicle within a preset time, the engine start and stop frequency is calculated, so as to adjust the minimum engine running time based on the actual running state of the vehicle and the actual working state of the engine, and at the same time, based on the battery state, correct the fuel consumption value of the engine for power generation, and then based on the internal and external temperature conditions of the vehicle, correct the fuel consumption value of the engine for power assistance, thereby improving fuel economy and avoiding continuous operation in a cold state, thereby protecting the healthy operation of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine. Specifically, vehicle operation data and vehicle comprehensive data are collected, and multiple actual operation directions of the vehicle are considered to make the adaptive adjustment more in line with the actual driving operation state. The engine start and stop judgment is made according to the vehicle operation data. The engine start and stop judgment is based on a preset engine start and stop parameter threshold list. The engine start and stop timing is accurately judged according to the preset engine start and stop parameter threshold list, thereby avoiding untimely engine start and stop. When it is determined that the engine is started, a weighted calculation of the engine minimum operation time is performed according to the vehicle comprehensive data to obtain a weighted value of the engine minimum operation time. The weighted calculation of the engine minimum operation time is used to assign weights to different vehicle comprehensive data. The engine minimum operation time is weightedly calculated from multiple directions, thereby making the overall adjustment more in line with the purpose of maximizing fuel economy. The engine minimum operation time is adjusted according to the engine minimum operation time weighted value, thereby improving fuel economy. At the same time, it avoids continuous operation in a cold state, thereby protecting the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0034] See also Figure 3 , which is a schematic diagram of the structure of a plug-in hybrid vehicle engine adaptive control system proposed in the third embodiment of the present invention, the system includes: The acquisition module 10 is used to collect vehicle operation data and vehicle comprehensive data; A start-stop judgment module 20, configured to make an engine start-stop judgment based on the vehicle operation data, wherein the engine start-stop judgment is based on a preset engine start-stop parameter threshold list; A weight calculation module 30 is used to perform a weighted calculation of the minimum engine running time according to the vehicle comprehensive data when determining that the engine is started, so as to obtain a weight value of the minimum engine running time, wherein the weighted calculation of the minimum engine running time is used to assign weights to different vehicle comprehensive data; The adjustment module 40 is used to adjust the minimum engine operating time according to the minimum engine operating time weight value.

[0035] The present invention also provides a computer storage medium on which one or more programs are stored. When the programs are executed by a processor, the above-mentioned plug-in hybrid vehicle engine adaptive control method is implemented.

[0036] The present invention also proposes a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to implement the above-mentioned plug-in hybrid vehicle engine adaptive control method.

[0037] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For purposes of this specification, "computer-readable medium" may be any device that can contain storage, communication, propagation or transmission of a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0038] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a 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, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0039] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A plug-in hybrid vehicle engine adaptive control method, characterized in that: include: Collect vehicle operation data and comprehensive vehicle data; Performing engine start / stop judgment according to the vehicle operation data, the engine start / stop judgment being based on a preset engine start / stop parameter threshold list; When it is determined that the engine is started, a weighted calculation of the minimum engine running time is performed according to the vehicle comprehensive data to obtain a weighted value of the minimum engine running time, wherein the weighted calculation of the minimum engine running time is used to assign weights to different vehicle comprehensive data; The minimum engine running time is adjusted according to the minimum engine running time weight value.

2. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of collecting vehicle operation data and vehicle comprehensive data specifically includes: Real-time detection of a vehicle speed parameter and a throttle opening parameter of the current vehicle, and then calculation of a vehicle output torque parameter according to the throttle opening parameter; generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter; Collecting comprehensive temperature parameters within a first preset time, wherein the comprehensive temperature parameters include a water tank temperature parameter, an oil tank temperature parameter, and an ambient temperature parameter; Detecting comprehensive battery parameters of the battery pack, wherein the comprehensive battery parameters include remaining power parameters and power change parameters; Retrieving engine start / stop parameters within a first preset time in a vehicle operation database, wherein the engine start / stop parameters include the number of engine starts / stops and engine start / stop time points; Vehicle comprehensive data is generated according to the comprehensive temperature parameter, the comprehensive battery parameter and the engine start-stop parameter.

3. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of determining engine start and stop based on the vehicle operation data specifically includes: Keying is performed according to a vehicle speed parameter and a vehicle output torque parameter in the vehicle operation data; A search is performed in a preset engine start / stop parameter threshold list according to a key value matching mechanism, and if a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start command is sent to the engine control module.

4. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of performing weighted calculation of the minimum engine running time according to the vehicle comprehensive data to obtain a weighted value of the minimum engine running time when determining that the engine is started specifically includes: When it is determined that the engine is started, the engine start-stop frequency is calculated according to the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value; Determining whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold; If the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a frequent start-stop state, and the engine assist fuel consumption value is calculated according to the engine start-stop frequency value; If it is determined that the engine start-stop frequency value is less than a first preset engine start-stop frequency threshold value, it is determined that the current vehicle engine is in a temporary start-stop state, and the engine power generation fuel consumption value is calculated according to the engine start-stop frequency value; The engine assisting fuel consumption value and the engine generating fuel consumption value are balanced and optimized according to a preset fuel economy curve to obtain a weighted value of the engine minimum operating time fuel consumption, wherein the engine assisting fuel consumption value is positively correlated with the weighted value of the engine minimum operating time fuel consumption, and the engine generating fuel consumption value is negatively correlated with the weighted value of the engine minimum operating time fuel consumption.

5. The plug-in hybrid vehicle engine adaptive control method according to claim 4, characterized in that: The step of balancing and optimizing the engine assisting fuel consumption value and the engine generating fuel consumption value according to the preset fuel economy curve to obtain the weighted value of the engine minimum running time fuel consumption may further include: Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data; If the comprehensive battery parameter is greater than or equal to the preset battery safety threshold, it is determined that the current vehicle battery is in a high power state, and a negative correction is made to the engine power generation fuel consumption value according to the comprehensive battery parameter; If the comprehensive battery parameter is less than a preset battery safety threshold, it is determined that the current vehicle battery is in a low-battery state, and the engine power generation fuel consumption value is positively corrected according to the comprehensive battery parameter.

6. The plug-in hybrid vehicle engine adaptive control method according to claim 4, characterized in that: The step of balancing and optimizing the engine assisting fuel consumption value and the engine generating fuel consumption value according to the preset fuel economy curve to obtain the weighted value of the engine minimum running time fuel consumption may further include: Make engine running status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data; If the comprehensive temperature parameter is greater than or equal to the preset engine healthy operation threshold, it is determined that the current vehicle engine is in a warm-up operation state, and a negative correction is made to the engine auxiliary fuel consumption value according to the comprehensive temperature parameter; If the comprehensive temperature parameter is less than a preset engine healthy operation threshold, it is determined that the current vehicle engine is in a cold engine operation state, and the engine auxiliary fuel consumption value is positively corrected according to the comprehensive temperature parameter.

7. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of adjusting the minimum engine running time according to the minimum engine running time weight value specifically includes: Calculate the minimum engine running time correction ratio according to the minimum engine running time weight value; Proportionally adjusting the minimum engine running time at the current moment according to the minimum engine running time correction ratio; When the engine control module receives a shutdown command, it delays operation according to the minimum engine operating time adjusted in proportion.

8. A plug-in hybrid vehicle engine adaptive control system, characterized in that: include: A collection module is used to collect vehicle operation data and vehicle comprehensive data; A start-stop judgment module, used for making an engine start-stop judgment according to the vehicle operation data, wherein the engine start-stop judgment is based on a preset engine start-stop parameter threshold list; A weight calculation module, used for performing a weighted calculation of the minimum engine running time according to the vehicle comprehensive data when determining that the engine is started, so as to obtain a weighted value of the minimum engine running time, wherein the weighted calculation of the minimum engine running time is used to assign weights to different vehicle comprehensive data; The adjustment module is used to adjust the minimum engine operating time according to the minimum engine operating time weight value.

9. A storage medium, characterized in that: The storage medium stores one or more programs, which, when executed by the processor, implement the plug-in hybrid vehicle engine adaptive control method as described in any one of claims 1 to 7.

10. A computer device, characterized in that: The computer device comprises a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, the method for adaptively controlling the engine of a plug-in hybrid vehicle according to any one of claims 1 to 7 is implemented.

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