A plug-in hybrid vehicle engine adaptive control method and system

Abstract

The present invention relates to the field of automobile control and proposes a method and system for adaptively controlling an engine of a plug-in hybrid vehicle. By memorizing the engine start and stop status of the vehicle within a preset time and calculating the engine start and stop frequency, the minimum engine operating time is adjusted based on the actual operating status of the vehicle and the actual operating status of the engine. The fuel consumption value of the engine used for power generation is corrected based on the battery status, and the fuel consumption value of the engine used for power assistance is corrected based on the internal and external temperature conditions of the vehicle. This improves fuel economy while avoiding continuous operation in a cold state, protecting the operating health of the engine. The present invention improves the fuel economy and engine operating efficiency of the plug-in hybrid vehicle engine.

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. A more important aspect of plug-in hybrid vehicles is the vehicle's fuel economy. 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 engine starts and stops are usually avoided. Therefore, a fixed minimum engine running 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 an adaptive control method and system for a plug-in hybrid vehicle engine. By memorizing the vehicle's engine start and stop status within a preset time, the system calculates the engine start and stop frequency, adjusting the minimum engine operating time based on the vehicle's actual operating status and the engine's actual operating status. Simultaneously, the system corrects the engine's fuel consumption for power generation based on the battery status, and corrects the engine's fuel consumption for power assistance based on the vehicle's internal and external temperature conditions. This improves fuel economy while avoiding continuous operation in a cold state, protecting the engine's operating health. The present invention improves the fuel economy and engine operating efficiency of plug-in hybrid vehicle engines.

[0006] The present invention proposes an adaptive control method for a plug-in hybrid vehicle engine, comprising:

[0007] Collect vehicle operation data and comprehensive vehicle data;

[0008] Performing engine start / stop determination based on the vehicle operating data, the engine start / stop determination being based on a preset engine start / stop parameter threshold list;

[0009] When it is determined that the engine is started, a weighted calculation of the minimum engine running time is performed based on 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;

[0010] The minimum engine operating time is adjusted according to the minimum engine operating time weight value.

[0011] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the vehicle's engine start and stop status within a preset time, the engine start and stop frequency is calculated. The minimum engine operating time is adjusted based on the actual vehicle operating state and the actual engine operating state. The fuel consumption value of the engine used for power generation is corrected based on the battery status, and the fuel consumption value of the engine used for power assistance is corrected based on the internal and external temperature conditions of the vehicle. This improves fuel economy while avoiding continuous operation in a cold state, protecting the operating health of the engine. The present invention improves the fuel economy and engine operating efficiency of plug-in hybrid vehicle engines. Specifically, vehicle operation data and comprehensive vehicle 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-stop judgment is made according to the vehicle operation data. The engine start-stop judgment is based on a preset engine start-stop parameter threshold list. The engine start-stop timing is accurately judged according to the preset engine start-stop parameter threshold list, thereby avoiding untimely engine start-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 and protects the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0012] Furthermore, the step of collecting vehicle operation data and vehicle comprehensive data specifically includes:

[0013] Real-time detection of the vehicle speed parameter and throttle opening parameter of the current vehicle, and then calculation of the vehicle output torque parameter according to the throttle opening parameter;

[0014] generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter;

[0015] 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;

[0016] Detecting comprehensive battery parameters of the battery pack, wherein the comprehensive battery parameters include a remaining power parameter and a power change parameter;

[0017] Retrieving engine start / stop parameters within a first preset time period from a vehicle operation database, the engine start / stop parameters including the number of engine starts and stops and engine start / stop times;

[0018] Vehicle comprehensive data is generated according to the comprehensive temperature parameter, the comprehensive battery parameter and the engine start-stop parameter.

[0019] Furthermore, the step of determining whether to start or stop the engine based on the vehicle operating data specifically includes:

[0020] Keying is performed based on the vehicle speed parameter and the vehicle output torque parameter in the vehicle operation data;

[0021] A search is performed in a preset engine start / stop parameter threshold list according to a key value matching mechanism. If a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start instruction is sent to the engine control module.

[0022] Furthermore, when determining that the engine is started, performing a weighted calculation of the minimum engine running time based on the vehicle comprehensive data to obtain a weighted value of the minimum engine running time specifically includes:

[0023] When it is determined that the engine is started, the engine start-stop frequency is calculated based on the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value;

[0024] Determining whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold;

[0025] If the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold, 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;

[0026] 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;

[0027] 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. 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.

[0028] Furthermore, the step of balancing and optimizing the engine assist fuel consumption value and the engine power generation 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:

[0029] Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data;

[0030] If the comprehensive battery parameter is greater than or equal to a 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;

[0031] 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.

[0032] Furthermore, the step of balancing and optimizing the engine assist fuel consumption value and the engine power generation 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:

[0033] Make engine operation status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data;

[0034] If the comprehensive temperature parameter is greater than or equal to a 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;

[0035] 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.

[0036] Furthermore, the step of adjusting the minimum engine operating time according to the minimum engine operating time weight value specifically includes:

[0037] Calculate the engine minimum running time correction ratio according to the engine minimum running time weight value;

[0038] Proportionally adjusting the current minimum engine operating time according to the minimum engine operating time correction ratio;

[0039] When the engine control module receives a shutdown command, it delays operation according to the minimum engine operating time adjusted in proportion.

[0040] The present invention proposes an adaptive control system for a plug-in hybrid vehicle engine, comprising:

[0041] Acquisition module, used to collect vehicle operation data and vehicle comprehensive data;

[0042] a start / stop determination module, configured to determine engine start / stop based on the vehicle operating data, wherein the engine start / stop determination is based on a preset engine start / stop parameter threshold list;

[0043] a weight calculation module for performing a weighted calculation of the minimum engine operating time based on the vehicle comprehensive data when determining that the engine is started, so as to obtain a weighted value of the minimum engine operating time, wherein the weighted calculation of the minimum engine operating time is used to assign weights to the comprehensive data of different vehicles;

[0044] The adjustment module is used to adjust the minimum engine operating time according to the minimum engine operating time weight value.

[0045] The present invention also provides a storage medium storing one or more programs, which, when executed by a processor, implement the above-mentioned plug-in hybrid vehicle engine adaptive control method.

[0046] The present invention further provides a computer device, comprising a memory and a processor, wherein:

[0047] The memory is used to store computer programs;

[0048] 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

[0049] Figure 1 This is a flow chart of the engine adaptive control method for a plug-in hybrid vehicle proposed in the first embodiment of the present invention;

[0050] 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;

[0051] Figure 3 This is a schematic diagram of the structure of the plug-in hybrid vehicle engine adaptive control system proposed in the third embodiment of the present invention.

[0052] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0053] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0054] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] 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, includes steps S01 to S04, wherein:

[0057] Step S01: collecting vehicle operation data and vehicle comprehensive data;

[0058] 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 the vehicle output torque parameter is calculated based on the throttle opening parameter;

[0059] generating vehicle operation data according to the vehicle speed parameter and the vehicle output torque parameter;

[0060] 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;

[0061] Detecting comprehensive battery parameters of the battery pack, wherein the comprehensive battery parameters include a remaining power parameter and a power change parameter;

[0062] Retrieving engine start / stop parameters within a first preset time period from a vehicle operation database, the engine start / stop parameters including the number of engine starts and stops and engine start / stop times;

[0063] Vehicle comprehensive data is generated according to the comprehensive temperature parameter, the comprehensive battery parameter and the engine start-stop parameter.

[0064] Step S02: determining whether to start or stop the engine based on vehicle operating data;

[0065] It should be noted that in this embodiment, keying is performed based on the vehicle speed parameter and the vehicle output torque parameter in the vehicle operation data;

[0066] A search is performed in a preset engine start / stop parameter threshold list according to a key value matching mechanism. If a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start instruction is sent to the engine control module.

[0067] Step S03: When it is determined that the engine is started, a weighted calculation of the minimum engine running time is performed based on the vehicle comprehensive data to obtain a weighted value of the minimum engine running time;

[0068] It should be noted that in this embodiment, when it is determined that the engine is started, the engine start-stop frequency is calculated based on the engine start-stop parameters in the vehicle comprehensive data to obtain the engine start-stop frequency value;

[0069] Determining whether the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold;

[0070] If the engine start-stop frequency value is greater than or equal to a first preset engine start-stop frequency threshold, 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;

[0071] 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;

[0072] 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;

[0073] Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data;

[0074] If the comprehensive battery parameter is greater than or equal to a 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;

[0075] 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;

[0076] Make engine operation status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data;

[0077] If the comprehensive temperature parameter is greater than or equal to a 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;

[0078] 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.

[0079] Step S04: adjusting the minimum engine operating time according to the minimum engine operating time weight value;

[0080] It should be noted that in this embodiment, the engine minimum operating time correction ratio is calculated based on the engine minimum operating time weight value;

[0081] Proportionally adjusting the current minimum engine operating time according to the minimum engine operating time correction ratio;

[0082] When the engine control module receives a shutdown command, it delays operation according to the minimum engine operating time adjusted in proportion.

[0083] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the vehicle's engine start and stop status within a preset time, the engine start and stop frequency is calculated. The minimum engine operating time is adjusted based on the actual vehicle operating state and the actual engine operating state. The fuel consumption value of the engine used for power generation is corrected based on the battery status, and the fuel consumption value of the engine used for power assistance is corrected based on the internal and external temperature conditions of the vehicle. This improves fuel economy while avoiding continuous operation in a cold state, protecting the operating health of the engine. The present invention improves the fuel economy and engine operating efficiency of plug-in hybrid vehicle engines. Specifically, vehicle operation data and comprehensive vehicle 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-stop judgment is made according to the vehicle operation data. The engine start-stop judgment is based on a preset engine start-stop parameter threshold list. The engine start-stop timing is accurately judged according to the preset engine start-stop parameter threshold list, thereby avoiding untimely engine start-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 and protects the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0084] 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, includes steps S11 to S16, wherein:

[0085] Step S11: detecting a vehicle speed parameter and a throttle opening parameter of the current vehicle in real time, calculating a vehicle output torque parameter based on the throttle opening parameter, generating vehicle operation data based on 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 engine start / stop parameters within the first preset time from a vehicle operation database, and generating comprehensive vehicle data;

[0086] 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, avoid temperature changes caused by changes in driving scenes, and cause interference in judgment. At the same time, the vehicle operation database includes all parameters of vehicle operation, and can store multiple engine start and stop parameters within the first preset time.

[0087] Step S12: Keying the vehicle speed parameter and the vehicle output torque parameter in the vehicle operation data, searching the preset engine start / stop parameter threshold list based on a key-value matching mechanism, and sending a start command to the engine control module if a corresponding match is found for the search key of the vehicle speed parameter or the vehicle output torque parameter;

[0088] 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 (the throttle opening changes).

[0089] Step S13: When it is determined that the engine is started, the engine start-stop frequency is calculated based on the engine start-stop parameters in the vehicle comprehensive data to obtain an 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 an engine assist fuel consumption value is calculated based on 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 an engine power generation fuel consumption value is calculated based on the engine start-stop frequency value. The engine assist fuel consumption value and the engine power generation 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;

[0090] 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. The average engine start-stop frequency threshold of the urban congested road sections in the navigation record is calculated 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.

[0091] Step S14: A battery conservation determination is performed based on the comprehensive battery parameters in the comprehensive vehicle data. If the comprehensive battery parameters are greater than or equal to a preset battery safety threshold, it is determined that the vehicle battery is currently in a high-battery state. A negative correction is then made to the engine power generation fuel consumption value based on the comprehensive battery parameters. If the comprehensive battery parameters are less than the preset battery safety threshold, it is determined that the vehicle battery is currently in a low-battery state. A positive correction is then made to the engine power generation fuel consumption value based on the comprehensive battery parameters.

[0092] It should be noted that the preset battery safety threshold in this embodiment is 30% of the current total battery capacity.

[0093] Step S15: Performing an engine operating state protection judgment based on the comprehensive temperature parameter in the comprehensive vehicle data. If the comprehensive temperature parameter is greater than or equal to a preset engine healthy operating threshold, it is determined that the current vehicle engine is in a warm-up state, and a negative correction is made to the engine auxiliary fuel consumption value based on the comprehensive temperature parameter. If the comprehensive temperature parameter is less than the preset engine healthy operating threshold, it is determined that the current vehicle engine is in a cold-down state, and a positive correction is made to the engine auxiliary fuel consumption value based on the comprehensive temperature parameter.

[0094] 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.

[0095] Step S16: Calculate the engine minimum running time correction ratio based on the engine minimum running time weight value, proportionally adjust the current engine minimum running time based on the engine minimum running time correction ratio, and when the engine control module receives a shutdown command, delay operation based on the proportionally adjusted engine minimum running time.

[0096] In summary, according to the above-mentioned plug-in hybrid vehicle engine adaptive control method, by memorizing the vehicle's engine start and stop status within a preset time, the engine start and stop frequency is calculated. The minimum engine operating time is adjusted based on the actual vehicle operating state and the actual engine operating state. The fuel consumption value of the engine used for power generation is corrected based on the battery status, and the fuel consumption value of the engine used for power assistance is corrected based on the internal and external temperature conditions of the vehicle. This improves fuel economy while avoiding continuous operation in a cold state, protecting the operating health of the engine. The present invention improves the fuel economy and engine operating efficiency of plug-in hybrid vehicle engines. Specifically, vehicle operation data and comprehensive vehicle 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-stop judgment is made according to the vehicle operation data. The engine start-stop judgment is based on a preset engine start-stop parameter threshold list. The engine start-stop timing is accurately judged according to the preset engine start-stop parameter threshold list, thereby avoiding untimely engine start-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 and protects the operation health of the engine. The present invention improves the fuel economy and engine operation efficiency of the plug-in hybrid vehicle engine.

[0097] See also Figure 3 , which is a schematic diagram of the structure of a plug-in hybrid vehicle engine adaptive control system proposed in a third embodiment of the present invention, the system includes:

[0098] The acquisition module 10 is used to collect vehicle operation data and vehicle comprehensive data;

[0099] a start / stop determination module 20 for determining engine start / stop based on the vehicle operating data, wherein the engine start / stop determination is based on a preset engine start / stop parameter threshold list;

[0100] A weight calculation module 30 is configured to perform a weighted calculation of the minimum engine operating time based on the vehicle comprehensive data when determining that the engine is started, so as to obtain a weighted value of the minimum engine operating time, wherein the weighted calculation of the minimum engine operating time is used to assign weights to the comprehensive data of different vehicles;

[0101] The adjustment module 40 is configured to adjust the minimum engine operating time according to the minimum engine operating time weight value.

[0102] The present invention also provides a computer storage medium having one or more programs stored thereon, which, when executed by a processor, implement the above-mentioned plug-in hybrid vehicle engine adaptive control method.

[0103] 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.

[0104] Those skilled in the art will appreciate that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device.

[0105] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting, or processing it in another suitable manner as necessary, and then storing it in a computer memory.

[0106] It should be understood that various components of the present invention may be implemented using hardware, software, firmware, or a combination thereof. In the aforementioned embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following technologies known in the art may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0107] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A plug-in hybrid vehicle engine adaptive control method, characterized in that: include: Collect vehicle operation data and comprehensive vehicle data; Performing engine start / stop determination based on the vehicle operating data, the engine start / stop determination 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 based on 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 step of performing a weighted calculation of the minimum engine running time based on the vehicle comprehensive data to obtain a weighted value of the minimum engine running time when it is determined that the engine is started specifically includes: When it is determined that the engine is started, the engine start-stop frequency is calculated based on 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, 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; The minimum engine operating time is adjusted according to the minimum engine operating 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 the vehicle speed parameter and throttle opening parameter of the current vehicle, and then calculation of 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, 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 a remaining power parameter and a power change parameter; Retrieving engine start / stop parameters within a first preset time period from a vehicle operation database, the engine start / stop parameters including the number of engine starts and stops and engine start / stop times; 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 / stop based on the vehicle operation data specifically includes: Keying is performed based on the vehicle speed parameter and the 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. If a corresponding matching result exists for the search key of the vehicle speed parameter or the vehicle output torque parameter, a start instruction 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 balancing and optimizing the engine assist fuel consumption value and the engine power generation fuel consumption value according to the preset fuel economy curve to obtain the engine minimum running time fuel consumption weighted value further includes: Make power conservation judgment based on comprehensive battery parameters in comprehensive vehicle data; If the comprehensive battery parameter is greater than or equal to a 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.

5. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of balancing and optimizing the engine assist fuel consumption value and the engine power generation fuel consumption value according to the preset fuel economy curve to obtain the engine minimum running time fuel consumption weighted value further includes: Make engine operation status protection judgment based on comprehensive temperature parameters in comprehensive vehicle data; If the comprehensive temperature parameter is greater than or equal to a 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.

6. The plug-in hybrid vehicle engine adaptive control method according to claim 1, characterized in that: The step of adjusting the minimum engine operating time according to the minimum engine operating time weight value specifically includes: Calculate the engine minimum running time correction ratio according to the engine minimum running time weight value; Proportionally adjusting the current minimum engine operating time according to the minimum engine operating 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.

7. A plug-in hybrid vehicle engine adaptive control system, characterized in that: include: Acquisition module, used to collect vehicle operation data and vehicle comprehensive data; a start / stop determination module, configured to determine engine start / stop based on the vehicle operating data, wherein the engine start / stop determination is based on a preset engine start / stop parameter threshold list; a weight calculation module for performing a weighted calculation of the minimum engine operating time based on the vehicle comprehensive data when determining that the engine is started, so as to obtain a weighted value of the minimum engine operating time, wherein the weighted calculation of the minimum engine operating time is used to assign weights to the comprehensive data of different vehicles; The step of performing a weighted calculation of the minimum engine running time based on the vehicle comprehensive data to obtain a weighted value of the minimum engine running time when it is determined that the engine is started specifically includes: When it is determined that the engine is started, the engine start-stop frequency is calculated based on 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, 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; The adjustment module is used to adjust the minimum engine operating time according to the minimum engine operating time weight value.

8. 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 according to any one of claims 1 to 6.

9. 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, it implements the plug-in hybrid vehicle engine adaptive control method according to any one of claims 1 to 6.

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