Engine fixed deactivation control method, system, electronic control unit and vehicle

Abstract

The application provides an engine fixed deactivation control method, system, electronic control unit and vehicle, and the method comprises the following steps: obtaining vehicle state information when the target vehicle is running, including engine oil temperature, vehicle working mode and gear shifting state information; judging whether the fixed deactivation preset condition is met according to the engine oil temperature, the vehicle working mode and the gear shifting state information; if the fixed deactivation preset condition is met, obtaining engine state information when the target vehicle is running, including engine speed and target torque; obtaining a fixed deactivation working mode according to the engine speed, the target torque and a preset deactivation map; wherein the fixed deactivation working mode is a symmetrically arranged fixed deactivation working mode; performing deactivation work according to the number of deactivation cylinders and the deactivation cylinder sequence in the fixed deactivation working mode, and controlling the working cylinder according to the control pulse parameters corresponding to the fixed deactivation working mode, so that the cost can be reduced, and the noise, vibration and sound roughness performance can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, and in particular to a control method and system for fixed deactivation of an engine, an electronic control unit and a vehicle. BACKGROUND

[0002] At present, environmental problems and energy crises are increasingly severe, and vehicles play an important role in energy consumption and exhaust pollution, so it is extremely urgent to solve the problem of energy saving and emission reduction of vehicles. By deactivation technology, the relevant mechanism can cut off the fuel supply and intake and exhaust of part of the cylinders, stop their work, increase the load rate of the remaining working cylinders, improve efficiency, and reduce fuel consumption.

[0003] At present, the prior art makes deactivation decisions for engine cylinders through dynamic deactivation technology.

[0004] However, due to the complex structure and control logic of dynamic deactivation, the cost is greatly increased, and at the same time, the noise, vibration and roughness are deteriorated. SUMMARY

[0005] The embodiments of the present application provide a control method and system for fixed deactivation of an engine, an electronic control unit and a vehicle, to reduce the cost and improve the performance of noise, vibration and roughness.

[0006] In a first aspect, the embodiments of the present application provide a control method for fixed deactivation of an engine, comprising: obtaining vehicle state information when a target vehicle is running; wherein the vehicle state information includes engine oil temperature, vehicle working mode and gear shifting state information; determining whether the fixed deactivation preset condition is met according to the engine oil temperature, the vehicle working mode and the gear shifting state information; if it is determined that the fixed deactivation preset condition is met, obtaining engine state information when the target vehicle is running; wherein the engine state information includes engine speed and target torque; obtaining a fixed deactivation working mode according to the engine speed, the target torque and a preset deactivation map; wherein the fixed deactivation working mode is a symmetrically arranged fixed deactivation working mode; performing deactivation work according to the number of deactivation and the deactivation cylinder sequence in the fixed deactivation working mode, and controlling the working cylinder according to the control pulse parameters corresponding to the fixed deactivation working mode.

[0007] In a possible implementation, the determining whether the fixed cylinder deactivation preset condition is met according to the engine oil temperature, the vehicle working mode, and the gear shift state information includes: determining whether the engine oil temperature is greater than an engine oil temperature preset value; determining whether the vehicle working mode is consistent with a vehicle working mode preset value; determining whether the gear shift state information is consistent with a gear shift state information preset value; and if it is determined that the engine oil temperature is greater than the engine oil temperature preset value, the vehicle working mode is consistent with the vehicle working mode preset value, and the gear shift state information is consistent with the gear shift state information preset value, it is determined that the fixed cylinder deactivation preset condition is met.

[0008] In a possible implementation, the vehicle working mode preset value includes: a normal mode, a thermal management mode, a two-cylinder deactivation working mode, a four-cylinder deactivation working mode, and a six-cylinder deactivation working mode; and correspondingly, the determining whether the vehicle working mode is consistent with the vehicle working mode preset value includes: if the vehicle working mode is the normal mode, the thermal management mode, the two-cylinder deactivation working mode, the four-cylinder deactivation working mode, or the six-cylinder deactivation working mode, it is determined that the vehicle working mode is consistent with the vehicle working mode preset value.

[0009] In a possible implementation, the fixed cylinder deactivation working mode is obtained according to the engine speed, the target torque, and a preset cylinder deactivation map, including: obtaining a corresponding relationship between the engine speed and the target torque; obtaining a hit cylinder number of the corresponding relationship in the preset cylinder deactivation map, and determining the fixed cylinder deactivation working mode according to the hit cylinder number.

[0010] In a possible implementation, the cylinder deactivation is performed according to the number of cylinders to be deactivated and a cylinder sequence in the fixed cylinder deactivation working mode, including: stopping fuel injection on the cylinders to be deactivated, and closing intake valves and exhaust valves of the cylinders to be deactivated according to the number of cylinders to be deactivated and the cylinder sequence.

[0011] In a possible implementation, after the determining whether the fixed cylinder deactivation preset condition is met, the method further includes: if it is determined that the fixed cylinder deactivation preset condition is not met, re-obtaining the vehicle state information at the target vehicle operation time.

[0012] In a second aspect, an embodiment of the present application provides a control system for fixed cylinder deactivation of an engine, including:

[0013] a vehicle state information obtaining unit, configured to obtain vehicle state information at a target vehicle operation time; wherein the vehicle state information includes an engine oil temperature, a vehicle working mode, and gear shift state information;

[0014] a determining unit, configured to determine whether a fixed cylinder deactivation preset condition is met according to the engine oil temperature, the vehicle working mode, and the gear shift state information;

[0015] An engine state information obtaining unit is configured to obtain engine state information of the target vehicle when it is determined that the preset condition for fixed deactivation is met, wherein the engine state information comprises engine speed and target torque;

[0016] A fixed deactivation working mode obtaining unit is configured to obtain a fixed deactivation working mode according to the engine speed, the target torque and a preset deactivation map, wherein the fixed deactivation working mode is a symmetrically arranged fixed deactivation working mode.

[0017] A control unit is configured to perform deactivation working according to the number of deactivated cylinders and the sequence of deactivated cylinders in the fixed deactivation working mode, and control working cylinders according to the control pulse parameters corresponding to the fixed deactivation working mode.

[0018] In a third aspect, an embodiment of the present application provides an electronic control unit, comprising: a memory, a processor;

[0019] The memory stores computer execution instructions.

[0020] The processor executes the computer execution instructions stored in the memory, so that the processor executes the first aspect and / or various possible implementation manners of the first aspect.

[0021] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising: an engine fixed deactivation control system, wherein the engine fixed deactivation control system is configured to execute the first aspect and / or various possible implementation manners of the first aspect.

[0022] In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a processor to implement the first aspect and / or various possible implementation manners of the first aspect.

[0023] In a sixth aspect, an embodiment of the present application provides a computer program product, comprising a computer program, wherein the computer program is executed by a processor to implement the first aspect and / or various possible implementation manners of the first aspect.

[0024] The engine fixed deactivation control method, system, electronic control unit and vehicle provided by the embodiments of the present application comprise the following steps: obtaining vehicle state information when a target vehicle is running, wherein the vehicle state information comprises engine oil temperature, vehicle working mode and gear shifting state information; determining whether the preset conditions of fixed deactivation are met according to the engine oil temperature, vehicle working mode and gear shifting state information; if yes, obtaining engine state information when the target vehicle is running, wherein the engine state information comprises engine speed and target torque; obtaining a fixed deactivation working mode according to the engine speed, target torque and preset deactivation map; performing deactivation work according to the number of deactivated cylinders and the sequence of deactivated cylinders in the fixed deactivation working mode, and controlling working cylinders according to the control pulse parameters corresponding to the fixed deactivation working mode. The structure of the fixed deactivation is simpler, and the control logic is clearer, so that the fuel economy can be improved at a low cost; the symmetrically arranged fixed deactivation working mode can improve the performance of noise, vibration and sound roughness. In addition, each fixed deactivation working mode has complete control pulses, and the working cylinders are controlled according to the control pulse parameters corresponding to the fixed deactivation working mode, so as to avoid the performance deviation caused by the consistency of each cylinder. In addition, in the process of determining whether the preset conditions of fixed deactivation are met, the engine oil temperature, vehicle working mode and gear shifting state information are used for judgment, which can directly obtain the engine oil temperature information, avoid the error caused by inferring the engine oil temperature through other information such as water temperature, avoid calling deactivation in special scenarios such as regeneration mode and braking mode, and affect the normal function, and avoid the problem that the torque response is slow and affects the normal driving of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0026] Figure 1 The scene schematic diagram of the engine fixed deactivation control method provided by the embodiments of the present application is shown in the figure.

[0027] Figure 2 The flowchart of the engine fixed deactivation control method provided by the embodiments of the present application is shown in the figure.

[0028] Figure 3 The preset deactivation map provided by the embodiments of the present application is shown in the figure.

[0029] Figure 4 The fixed deactivation working mode provided by the embodiments of the present application is shown in the figure.

[0030] Figure 5 The structure schematic diagram of the engine fixed deactivation control system provided by the embodiments of the present application is shown in the figure.

[0031] Figure 6The structure schematic diagram of the electronic control unit provided by the embodiment of the present application is shown.

[0032] The specific embodiments of the present application have been shown by the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. When the description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] Figure 1 The scene schematic diagram of the control method of the fixed deactivation cylinder of the engine provided by the embodiment of the present application is shown as Figure 1 As shown, the method of the present application can be applied to any vehicle, which comprises an electronic control unit for obtaining vehicle state information during vehicle operation, including engine oil temperature, vehicle working mode and gear shifting state information; and determining whether the fixed deactivation cylinder preset condition is met according to the engine oil temperature, vehicle working mode and gear shifting state information, if yes, obtaining engine state information during vehicle operation, including engine speed and target torque; obtaining the fixed deactivation cylinder working mode according to the engine speed, target torque and preset deactivation cylinder map; performing deactivation cylinder work according to the number of deactivation cylinders and the sequence of deactivation cylinders in the fixed deactivation cylinder working mode, and controlling the working cylinder according to the control pulse parameters corresponding to the fixed deactivation cylinder working mode.

[0035] At present, the environmental problems and energy crisis are increasingly severe, and vehicles play an important role in energy consumption and exhaust pollution, so it is extremely urgent to solve the problem of energy saving and emission reduction of vehicles. By deactivation cylinder technology, the relevant agencies can cut off the fuel supply and intake and exhaust of part of the cylinders, stop their work, increase the load rate of the remaining working cylinders, improve the efficiency and reduce fuel consumption. At present, the existing technology makes deactivation cylinder decisions for engine cylinders through dynamic deactivation cylinder technology. However, due to the complex structure and control logic of dynamic deactivation cylinder, the cost is greatly increased, accompanied by the deterioration of noise, vibration and sound roughness.

[0036] To solve the above technical problems, the present application proposes the following technical concept: considering the complex structure and control logic of dynamic cylinder deactivation, which leads to a substantial increase in cost, accompanied by the deterioration of noise, vibration and sound roughness. The inventor thought of adopting a symmetrically arranged fixed cylinder deactivation mode, deactivating the cylinder according to the number of cylinders and the cylinder sequence in the fixed cylinder deactivation mode, and controlling the working cylinder according to the control pulse parameters corresponding to the fixed cylinder deactivation mode. First, according to the vehicle state information when the target vehicle is running, including engine oil temperature, vehicle operating mode and gear shifting state information, it is judged whether the fixed cylinder deactivation preset condition is met to avoid the problem that the vehicle driving is affected after the cylinder is deactivated and the functional requirements cannot be met. If it is determined that the fixed cylinder deactivation preset condition is met, the engine state information when the target vehicle is running is obtained, including engine speed and target torque; according to the engine speed, target torque and preset cylinder deactivation map, the fixed cylinder deactivation mode is obtained; the fixed cylinder deactivation mode is a symmetrically arranged fixed cylinder deactivation mode; the symmetrically arranged fixed cylinder deactivation mode not only meets the functional requirements of raising the temperature and reducing oil consumption, but also ensures the performance of noise, vibration and sound roughness. According to the number of cylinders and the cylinder sequence in the fixed cylinder deactivation mode, the cylinder is deactivated, and the working cylinder is controlled according to the control pulse parameters corresponding to the fixed cylinder deactivation mode. Each fixed cylinder deactivation mode has control pulse parameters to avoid performance deviation caused by cylinder consistency. The method of the present application can improve fuel economy at low cost and improve the performance of noise, vibration and sound roughness.

[0037] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0038] Figure 2 The flowchart of the control method of the engine fixed cylinder deactivation provided by the embodiments of the present application is shown as Figure 2 The method comprises:

[0039] S201: Obtain vehicle state information when the target vehicle is running; wherein the vehicle state information includes engine oil temperature, vehicle operating mode and gear shifting state information.

[0040] Among them, the engine oil temperature is the current engine oil temperature when the target vehicle is running; the vehicle operating mode is the current vehicle operating mode when the target vehicle is running; the gear shifting state information is the current gear shifting state information when the target vehicle is running.

[0041] In the embodiment, the engine oil temperature affects the normal work of the stop-cylinder mechanism hardware; the vehicle working modes include a normal mode, a brake mode, a regeneration mode, a thermal management mode, a stop-two-cylinder working mode, a stop-four-cylinder working mode and a stop-six-cylinder working mode. The modes such as the brake mode and the regeneration mode indicate that the driver has special functional requirements for the vehicle, and the stop-cylinder function cannot be enabled in these working modes, otherwise the function will be abnormal; the torque response of the stop-cylinder function is delayed, which affects the gear shifting process and thus affects the normal driving of the vehicle.

[0042] S202: Determine whether the fixed stop-cylinder preset condition is met according to the engine oil temperature, the vehicle working mode and the gear shifting state information.

[0043] Specifically, step S202 includes S2021-S2024:

[0044] S2021: Determine whether the engine oil temperature is greater than the engine oil temperature preset value.

[0045] S2022: Determine whether the vehicle working mode is consistent with the vehicle working mode preset value.

[0046] The vehicle working mode preset value includes: the normal mode, the thermal management mode, the stop-two-cylinder working mode, the stop-four-cylinder working mode and the stop-six-cylinder working mode.

[0047] Specifically, if the vehicle working mode is the normal mode, the thermal management mode, the stop-two-cylinder working mode, the stop-four-cylinder working mode and the stop-six-cylinder working mode, it is determined that the vehicle working mode is consistent with the vehicle working mode preset value.

[0048] S2023: Determine whether the gear shifting state information is consistent with the gear shifting state information preset value.

[0049] S2024: If it is determined that the engine oil temperature is greater than the engine oil temperature preset value, the vehicle working mode is consistent with the vehicle working mode preset value, and the gear shifting state information is consistent with the gear shifting state information preset value, it is determined that the fixed stop-cylinder preset condition is met.

[0050] In the embodiment, when the engine oil temperature, the vehicle working mode and the gear shifting state information meet the fixed stop-cylinder preset condition, the stop-cylinder mechanism can work normally; the vehicle is in the preset working mode and will not cause the abnormal working mode such as the regeneration mode and the brake mode due to the stop-cylinder; the vehicle is not in the gear shifting state and will not cause the torque response delay due to the stop-cylinder, which affects the normal driving of the vehicle.

[0051] S203: If it is determined that the fixed stop-cylinder preset condition is met, the engine state information of the target vehicle in operation is obtained; the engine state information includes the engine speed and the target torque.

[0052] S204: Obtain a fixed deactivation working mode according to the engine speed, the target torque and a preset deactivation map; wherein the fixed deactivation working mode is a symmetrically arranged fixed deactivation working mode.

[0053] Specifically, a corresponding relationship between the engine speed and the target torque is obtained; a hit cylinder number of the corresponding relationship in the preset deactivation map is obtained, and the fixed deactivation working mode is determined according to the hit cylinder number.

[0054] Specifically, Figure 3 A preset deactivation map provided by the embodiment of the present application is shown in the figure. Figure 3 As shown in the figure, the horizontal coordinate is the target torque, and the vertical coordinate is the engine speed. The data blocks in the figure represent the working cylinder number, such as 2, 4 and 6, which represent the two-cylinder deactivation working mode, the four-cylinder deactivation working mode and the six-cylinder deactivation working mode respectively, wherein each data block is a corresponding relationship between the engine speed and the target torque.

[0055] The fixed deactivation working mode includes the two-cylinder deactivation working mode, the four-cylinder deactivation working mode and the six-cylinder deactivation working mode. Each deactivation working mode has a complete engine control pulse. Figure 4 A fixed deactivation working mode provided by the embodiment of the present application is shown in the figure. Figure 4 As shown in the figure, when the fixed deactivation working mode is the two-cylinder deactivation working mode, one of three deactivation combinations of 1 / 6 cylinder, 2 / 5 cylinder or 3 / 4 cylinder is selected to perform the deactivation operation, and this combination is used every time the two-cylinder deactivation working mode is entered; when the fixed deactivation working mode is the four-cylinder deactivation working mode, one of three deactivation combinations of 1 / 2 / 5 / 6 cylinder, 1 / 3 / 4 / 6 cylinder and 2 / 3 / 4 / 5 cylinder is selected to perform the deactivation operation, and this combination is used every time the four-cylinder deactivation working mode is entered; when the fixed deactivation working mode is the six-cylinder deactivation working mode, 1 / 2 / 3 / 4 / 5 / 6 cylinder all perform the deactivation operation.

[0056] In the embodiment, the two-cylinder deactivation working mode, the four-cylinder deactivation working mode and the six-cylinder deactivation working mode are all symmetrically arranged fixed deactivation working modes.

[0057] Optionally, if it is not necessary to enter the fixed deactivation working mode, the full-cylinder working mode is entered.

[0058] S205: Deactivate working according to the number of deactivation cylinders and the deactivation cylinder sequence in the fixed deactivation working mode, and control the working cylinder according to the control pulse parameters corresponding to the fixed deactivation working mode.

[0059] Specifically, according to the number of deactivation cylinders and the deactivation cylinder sequence, stop injecting oil into the deactivation cylinder, and close the intake valve and the exhaust valve of the deactivation cylinder.

[0060] In the embodiment, the cylinder deactivation is performed according to the number of cylinders to be deactivated and the cylinder sequence of the cylinders to be deactivated, the fuel injection to the cylinders to be deactivated is stopped, and the intake valves and the exhaust valves of the cylinders to be deactivated are closed; the working cylinders are controlled according to the control map parameters corresponding to the fixed cylinder deactivation mode, so that the output torque of the engine is kept unchanged.

[0061] In summary, the vehicle state information of the target vehicle in operation is obtained, wherein the vehicle state information includes the engine oil temperature, the vehicle working mode and the gear shifting state information. It is judged whether the fixed cylinder deactivation preset condition is met according to the engine oil temperature, the vehicle working mode and the gear shifting state information. If yes, the engine state information of the target vehicle in operation is obtained, wherein the engine state information includes the engine speed and the target torque. The fixed cylinder deactivation mode is obtained according to the engine speed, the target torque and the preset cylinder deactivation map. The cylinder deactivation is performed according to the number of cylinders to be deactivated and the cylinder sequence of the cylinders to be deactivated in the fixed cylinder deactivation mode, and the working cylinders are controlled according to the control map parameters corresponding to the fixed cylinder deactivation mode. The structure of the fixed cylinder deactivation is simpler, and the control logic is clearer, so that the fuel economy is improved at low cost. The symmetrically arranged fixed cylinder deactivation mode can improve the performance of noise, vibration and sound roughness. In addition, each fixed cylinder deactivation mode has complete control map, and the working cylinders are controlled according to the control map parameters corresponding to the fixed cylinder deactivation mode, so as to avoid the performance deviation caused by the consistency of each cylinder. In addition, in the process of judging whether the fixed cylinder deactivation preset condition is met, the engine oil temperature, the vehicle working mode and the gear shifting state information are used for judgment. On the one hand, the engine oil temperature information is directly obtained, so as to avoid the error caused by the speculation of the oil temperature through the water temperature and other information. On the other hand, the cylinder deactivation is avoided in the regeneration mode and the braking mode and other special scenes, so as to affect the normal function. In addition, the problem that the normal driving of the vehicle is affected due to the slow torque response is avoided.

[0062] On the basis of the above-mentioned embodiments, in the embodiment, the case that the fixed cylinder deactivation preset condition is not met is introduced, which is described in detail as follows.

[0063] If it is determined that the fixed cylinder deactivation preset condition is not met, the vehicle state information of the target vehicle in operation is re-obtained.

[0064] Specifically, if it is determined that the fixed cylinder deactivation preset condition is not met, the vehicle state information of the target vehicle in operation is returned to be re-obtained until the fixed cylinder deactivation preset condition is met.

[0065] In summary, if the fixed cylinder deactivation preset condition is not met, the vehicle state information of the target vehicle in operation is returned to be obtained, so that whether the fixed cylinder deactivation working mode can be entered can be judged according to the real-time state of the vehicle, so as to avoid the problem that the vehicle driving is affected after the cylinder deactivation and the functional requirements cannot be met.

[0066] Figure 5A structural schematic diagram of an engine fixed deactivation cylinder control system is provided for an embodiment of the present application. As shown in Figure 5 The engine fixed deactivation cylinder control system includes a vehicle state information acquisition unit 501, a judgment unit 502, an engine state information acquisition unit 503, a fixed deactivation cylinder operation mode acquisition unit 504, and a control unit 505.

[0067] The vehicle state information acquisition unit 501 is configured to acquire vehicle state information when the target vehicle is running. The vehicle state information includes engine oil temperature, vehicle operation mode, and gear shift state information.

[0068] The judgment unit 502 is configured to determine whether the fixed deactivation cylinder preset condition is met according to the engine oil temperature, the vehicle operation mode, and the gear shift state information.

[0069] The engine state information acquisition unit 503 is configured to acquire engine state information when the target vehicle is running if it is determined that the fixed deactivation cylinder preset condition is met. The engine state information includes engine speed and target torque.

[0070] The fixed deactivation cylinder operation mode acquisition unit 504 is configured to acquire a fixed deactivation cylinder operation mode according to the engine speed, the target torque, and a preset deactivation cylinder map. The fixed deactivation cylinder operation mode is a symmetrically arranged fixed deactivation cylinder operation mode.

[0071] The control unit 505 is configured to perform deactivation cylinder operation according to the number of deactivated cylinders and the deactivated cylinder sequence in the fixed deactivation cylinder operation mode, and to control the working cylinders according to the control pulse parameters corresponding to the fixed deactivation cylinder operation mode.

[0072] In a possible implementation, the judgment unit 502 includes an engine oil temperature judgment unit, a vehicle operation mode judgment unit, a gear shift state information judgment unit, and a determination unit. The engine oil temperature judgment unit is configured to determine whether the engine oil temperature is greater than a preset engine oil temperature value. The vehicle operation mode judgment unit is configured to determine whether the vehicle operation mode is consistent with a preset vehicle operation mode value. The gear shift state information judgment unit is configured to determine whether the gear shift state information is consistent with a preset gear shift state information value. The determination unit is configured to determine that the fixed deactivation cylinder preset condition is met if it is determined that the engine oil temperature is greater than the preset engine oil temperature value, the vehicle operation mode is consistent with the preset vehicle operation mode value, and the gear shift state information is consistent with the preset gear shift state information value.

[0073] In a possible implementation, the vehicle working mode preset value includes: a normal mode, a thermal management mode, a stop-two-cylinder working mode, a stop-four-cylinder working mode, and a stop-six-cylinder working mode; and the vehicle working mode judging unit is specifically configured to determine that the vehicle working mode is consistent with the vehicle working mode preset value if the vehicle working mode is the normal mode, the thermal management mode, the stop-two-cylinder working mode, the stop-four-cylinder working mode, or the stop-six-cylinder working mode.

[0074] In a possible implementation, the fixed stop-cylinder working mode obtaining unit 504 is specifically configured to obtain a corresponding relationship between the engine speed and the target torque, obtain a hit cylinder number of the corresponding relationship in a preset stop-cylinder map, and determine the fixed stop-cylinder working mode according to the hit cylinder number.

[0075] In a possible implementation, the control unit 505 is specifically configured to stop fuel injection on the cylinder of the stop-cylinder and close the intake valve and the exhaust valve of the cylinder of the stop-cylinder according to the stop-cylinder number and the stop-cylinder sequence.

[0076] In a possible implementation, the engine fixed stop-cylinder control system further includes a vehicle state information re-obtaining unit configured to re-obtain the vehicle state information of the target vehicle running if it is determined that the fixed stop-cylinder preset condition is not met.

[0077] The engine fixed stop-cylinder control system provided in this embodiment can perform the method provided in the method embodiments, and has similar implementation principles and technical effects, which will not be described here again in this embodiment.

[0078] Figure 6 A structural schematic diagram of an electronic control unit provided in this embodiment is shown in FIG. 1. Figure 6 As shown in FIG. 1, the electronic control unit provided in this embodiment includes at least one processor 601 and a memory 602. Optionally, the electronic control unit further includes a communication component 603. The processor 601, the memory 602, and the communication component 603 are connected through a bus 604.

[0079] In the specific implementation process, the at least one processor 601 executes the computer execution instructions stored in the memory 602, so that the at least one processor 601 performs the method described above.

[0080] The specific implementation process of the processor 601 can refer to the method embodiments described above, and has similar implementation principles and technical effects, which will not be described here again in this embodiment.

[0081] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or can also be any conventional processor. The steps of the method disclosed in combination with the application can be directly embodied as hardware processor execution, or executed by a combination of hardware and software modules in the processor.

[0082] The memory can include a random access memory (RAM), and can also include a non-volatile memory (NVM), such as at least one disk memory.

[0083] The bus can be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, the bus in the drawings of the present application does not limit to only one bus or one type of bus.

[0084] The present application also provides a vehicle comprising the control system for fixed deactivation of the engine, which can execute the method provided by the above method embodiments.

[0085] The present application also provides a computer program product comprising a computer program, which, when executed by a processor, implements the above method.

[0086] The present application also provides a computer-readable storage medium, which stores computer execution instructions, and when a processor executes the computer execution instructions, the above method is implemented.

[0087] The above-mentioned readable storage medium can be realized by any type of volatile or nonvolatile storage devices or their combinations, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0088] An exemplary readable storage medium is coupled to the processor, so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in the device.

[0089] The division of units is only a logical functional division, and in actual implementation, there can be another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0090] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0091] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0092] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the method of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0093] It can be understood by those skilled in the art that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The aforementioned program can be stored in a computer readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, and various media that can store program codes.

[0094] Finally, it should be noted that: those skilled in the art will easily think of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application that follow the general principles of the present application and include common knowledge or conventional technical means in the art that are not disclosed in the present application, and is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. An engine fixed deactivation control method characterized by, The application is applied to an electronic control unit, comprising: acquiring vehicle state information of a target vehicle in operation; wherein the vehicle state information comprises engine oil temperature, vehicle working mode and gear shifting state information; judging whether the engine oil temperature is greater than a preset engine oil temperature value; judging whether the vehicle working mode is consistent with a preset vehicle working mode value; judging whether the gear shifting state information is consistent with a preset gear shifting state information value; if it is judged that the engine oil temperature is greater than the preset engine oil temperature value, the vehicle working mode is consistent with the preset vehicle working mode value, and the gear shifting state information is consistent with the preset gear shifting state information value, it is judged that preset conditions of fixed cylinder deactivation are met; if it is judged that the preset conditions of fixed cylinder deactivation are met, acquiring engine state information of the target vehicle in operation; wherein the engine state information comprises engine speed and target torque; acquiring a fixed cylinder deactivation working mode according to the engine speed, the target torque and a preset cylinder deactivation map; wherein the fixed cylinder deactivation working mode is a symmetrically arranged fixed cylinder deactivation working mode; carrying out cylinder deactivation work according to the number of cylinders to be deactivated and the cylinder sequence in the fixed cylinder deactivation working mode, and controlling working cylinders according to control pulse parameters corresponding to the fixed cylinder deactivation working mode.

2. The method of claim 1, wherein, The preset vehicle working mode value comprises normal mode, thermal management mode, two-cylinder deactivation working mode, four-cylinder deactivation working mode and six-cylinder deactivation working mode. Correspondingly, the judging whether the vehicle working mode is consistent with the preset vehicle working mode value comprises: if the vehicle working mode is the normal mode, the thermal management mode, the two-cylinder deactivation working mode, the four-cylinder deactivation working mode and the six-cylinder deactivation working mode, it is judged that the vehicle working mode is consistent with the preset vehicle working mode value.

3. The method of claim 1, wherein, The acquiring a fixed cylinder deactivation working mode according to the engine speed, the target torque and a preset cylinder deactivation map comprises: acquiring a corresponding relationship between the engine speed and the target torque; acquiring a hit cylinder number of the corresponding relationship in the preset cylinder deactivation map, and determining a fixed cylinder deactivation working mode according to the hit cylinder number.

4. The method of claim 1, wherein, The carrying out cylinder deactivation work according to the number of cylinders to be deactivated and the cylinder sequence in the fixed cylinder deactivation working mode comprises: stopping fuel injection to cylinders to be deactivated, and closing intake valves and exhaust valves of the cylinders to be deactivated according to the number of cylinders to be deactivated and the cylinder sequence.

5. The method according to any one of claims 1 to 4, characterized in that, After the judging whether the preset conditions of fixed cylinder deactivation are met, the method further comprises: if it is judged that the preset conditions of fixed cylinder deactivation are not met, reacquiring vehicle state information of the target vehicle in operation.

6. An engine fixed deactivation control system characterized by comprising: The system comprises: a vehicle state information acquisition unit, configured to acquire vehicle state information of a target vehicle in operation; wherein the vehicle state information comprises engine oil temperature, vehicle working mode and gear shifting state information; an engine oil temperature judging unit, configured to judge whether the engine oil temperature is greater than a preset engine oil temperature value; a vehicle working mode judging unit, configured to judge whether the vehicle working mode is consistent with a preset vehicle working mode value; The shift state information judging unit is configured to judge whether the shift state information is consistent with a preset shift state information value. The determining unit is configured to determine that the preset condition for fixed cylinder deactivation is met if it is determined that the engine oil temperature is greater than a preset engine oil temperature value, the vehicle operation mode is consistent with a preset vehicle operation mode value, and the shift state information is consistent with a preset shift state information value. The engine state information obtaining unit is configured to obtain engine state information of the target vehicle if it is determined that the preset condition for fixed cylinder deactivation is met, wherein the engine state information comprises an engine speed and a target torque. The fixed cylinder deactivation operation mode obtaining unit is configured to obtain a fixed cylinder deactivation operation mode according to the engine speed, the target torque, and a preset cylinder deactivation map, wherein the fixed cylinder deactivation operation mode is a symmetrically arranged fixed cylinder deactivation operation mode. The control unit is configured to perform cylinder deactivation operation according to the number of cylinders to be deactivated and the cylinder sequence in the fixed cylinder deactivation operation mode, and to control the working cylinders according to the corresponding control pulse parameters of the fixed cylinder deactivation operation mode.

7. An electronic control unit, characterized by The system comprises: a memory and a processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the processor executes the method according to any one of claims 1-5.

8. A vehicle characterized by comprising: The system comprises: an engine fixed cylinder deactivation control system, which is configured to execute the method according to any one of claims 1-5.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to implement the method according to any one of claims 1-5.

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