CN114704396B - Engine cold start control method and device, electronic equipment and storage medium - Google Patents
Engine cold start control method and device, electronic equipment and storage medium Download PDFInfo
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- CN114704396B CN114704396B CN202210356692.8A CN202210356692A CN114704396B CN 114704396 B CN114704396 B CN 114704396B CN 202210356692 A CN202210356692 A CN 202210356692A CN 114704396 B CN114704396 B CN 114704396B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/023—Temperature of lubricating oil or working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The application provides an engine cold start control method, an engine cold start control device, electronic equipment and a storage medium, wherein the control method comprises the following steps: acquiring working condition parameters of an engine; detecting whether the engine is in a cold start state or not based on the working condition parameters; and when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection devices in each cylinder body to inject oil at an actual oil injection amount smaller than a preset starting oil injection amount until the engine reaches a preset start state, and controlling the oil injection amount of the oil injection devices in each cylinder body to recover to the preset starting oil injection amount. The oil injection amount of the oil injection device in each cylinder body is controlled to be smaller than the preset starting oil injection amount, the mixed gas in the cylinder is compressed through the reciprocating motion of the piston of the cylinder body, the temperature in the cylinder is increased, less oil is injected, the mixed gas is ignited, the accumulation of oil in the cylinder is reduced while the temperature in the cylinder is further increased, and the low-temperature starting performance is optimized.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a device for controlling cold start of an engine, electronic equipment and a storage medium.
Background
When the diesel engine is started at a low temperature, the compression temperature in the cylinder is low, and the ignition point of the diesel oil cannot be reached, at the moment, the diesel oil sprayed into the cylinder cannot be ignited and combusted, if a large amount of oil is continuously sprayed into the cylinder, a large amount of diesel oil is accumulated in the cylinder, the mixing ratio of the diesel oil and air is imbalanced, the diesel oil is more difficult to ignite and combust, and finally the diesel engine cannot be started.
The existing diesel engine body is heated by adopting an open fire baking mode, so that the friction resistance is reduced, and the temperature in a cylinder is raised, thereby achieving the purpose of starting the diesel engine. However, as a large number of oil ways exist at the periphery of the diesel engine, the open fire heating method has huge potential safety hazards.
The electric heating air intake can improve the air intake temperature, indirectly improve the temperature in the compressed cylinder, and achieve the purpose of being convenient for the diesel engine to start. This method is relatively safe, but has the same disadvantages as the first method described above, in that it cannot remove the extra unburned diesel in the cylinder, which causes deterioration of the in-cylinder starting environment, and the heating efficiency is low, and is not suitable for use in extremely cold regions.
Disclosure of Invention
In order to solve the problem of difficulty in low-temperature starting of a diesel engine in the prior art explained in the background art, the application provides an engine cold start control method, an engine cold start control device, an electronic device and a storage medium.
According to a first aspect an embodiment of the present application provides a cold start control method of an engine including a plurality of cylinders, the control method including: acquiring working condition parameters of an engine; detecting whether the engine is in a cold start state or not based on the working condition parameters; and when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection devices in each cylinder body to inject oil at an actual oil injection amount smaller than a preset starting oil injection amount until the engine reaches a preset start state, and controlling the oil injection amount of the oil injection devices in each cylinder body to recover to the preset starting oil injection amount.
Optionally, the controlling the oil injection device in each cylinder to inject oil with an actual oil injection amount smaller than the preset starting oil injection amount includes: and controlling the oil injection devices of the cylinder bodies to stop injecting oil once every preset working cycle.
Optionally, the step of reaching the preset starting state comprises: judging whether the working state of the engine reaches a first stable state or not; and when the working state reaches the first stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity, and maintaining the starter to continuously work for a preset time.
Optionally, the step of reaching the preset starting state comprises: judging whether the working state of the engine reaches a second stable state or not; and when the working state reaches the second stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity.
Optionally, the step of reaching the preset starting state comprises: at least one parameter value of the rotating speed, the engine oil temperature and the engine water temperature in the first stable state is smaller than the corresponding parameter value of the rotating speed, the engine oil temperature or the engine water temperature in the second stable state.
Optionally, when the engine is in a cold start state, comprising: acquiring real-time working condition parameters of a current engine; calculating the difference value between the current real-time working condition parameter value of the engine and the preset working condition parameter value when the engine is in a preset starting state; and determining the fuel injection quantity reduction of the fuel injection devices in the cylinders based on the difference, wherein the reduction quantity is positively correlated with the difference.
Optionally, the controlling each cylinder to cyclically work and the controlling the oil injection device in each cylinder to inject oil at an actual oil injection amount smaller than a preset starting oil injection amount includes: determining an amount of fuel injected per one cycle of operation based on the amount of reduction; and controlling the oil injection devices in the cylinder bodies to inject oil according to the oil injection quantity of each time in each working cycle.
According to another aspect, an embodiment of the present application provides an engine cold start control apparatus, the engine including a plurality of cylinders, the control apparatus including: the acquisition module is used for acquiring working condition parameters of the engine; the detection module is used for detecting whether the engine is in a cold start state or not based on the working condition parameters; and the control module is used for controlling each cylinder body to work circularly when the engine is in a cold starting state, controlling the oil injection amount of the oil injection device in each cylinder body to be smaller than a preset starting oil injection amount until the preset starting state is reached, and controlling the oil injection amount of the oil injection device in each cylinder body to be recovered to the preset starting oil injection amount.
According to another aspect of the embodiments of the present application, there is also provided an electronic device, including a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are configured to communicate with each other via the communication bus, and the memory is configured to store a computer program; the processor is configured to execute the engine cold start control method steps described in any one of the above embodiments by executing the computer program stored in the memory.
According to yet another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium having a computer program stored therein, wherein the computer program is configured to execute the engine cold start control steps described in any of the above embodiments when executed.
This application is through when detecting the engine and being in cold start state, and each cylinder body that control started is in the start-up stage, controls each cylinder body cycle work, simultaneous control each fueling injection equipment's in the cylinder body fuel injection quantity is less than and presets the start-up fuel injection quantity, through the reciprocating motion of cylinder body piston, compresses the interior gas mixture of jar, increases the in-cylinder temperature, spouts less oil mass simultaneously, ignites the mist simultaneously, reduces the accumulation of oil in the jar when further increasing the in-cylinder temperature, optimizes the low temperature start performance. And controlling the oil injection quantity of the oil injection devices in the cylinder bodies to be restored to the preset starting oil injection quantity until a preset starting state is reached. Thereby enabling the engine to be started smoothly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram illustrating a hardware environment for a cold start control method of an engine according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method of controlling a cold start of an engine according to an embodiment of the present application;
FIG. 3 is a block diagram of an engine cold start control apparatus according to an embodiment of the present disclosure;
fig. 4 is a block diagram of an alternative electronic device in an embodiment of the present application.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As an exemplary embodiment, when the engine is in cold start, heating is often used to raise the in-cylinder temperature of the engine. Namely, the idea of solving the problem of difficult cold start in the prior art is to heat the cylinder body of the engine. Furthermore, because the low temperature of the gasoline or the diesel oil has poor evaporation property during cold start, the ECU can increase the fuel injection quantity so that enough oil is evaporated to form a mixture with enough concentration, and the success of the start can be ensured. However, the inventor finds that if the vehicle cannot be started for a long time in the mode, the diesel oil in the cylinder is excessive, and the starting is more difficult.
Based on this, the application provides an engine cold start control method, an engine cold start control device, an electronic device and a storage medium, wherein according to one aspect of the embodiment of the application, the engine cold start control method is provided. Alternatively, in the present embodiment, the engine cold start control method may be applied to a hardware environment formed by the terminal 102 and the server 104 as shown in fig. 1. As shown in fig. 1, the server 104 is connected to the terminal 102 through a network, which may be used to provide services for the terminal or a client installed on the terminal, may be provided with a database on the server or separately from the server, may be used to provide data storage services for the server 104, and may be used to handle cloud services, and the network includes but is not limited to: the terminal 102 is not limited to a PC, a mobile phone, a tablet computer, a vehicle-mounted computer, an engine control unit, and the like. The engine cold start control method according to the embodiment of the present application may be executed by the server 104, may be executed by the terminal 102, or may be executed by both the server 104 and the terminal 102. The terminal 102 may execute the engine cold start control method according to the embodiment of the present application by a client installed thereon.
Taking the terminal 102 and/or the server 104 to execute the engine cold start control method in the present embodiment as an example, fig. 2 is a schematic flow chart of an alternative engine cold start control method according to the present embodiment, and referring to fig. 2, the flow chart of the method may include the following steps:
and S10, obtaining working condition parameters of the engine.
And S20, detecting whether the engine is in a cold starting state or not based on the working condition parameters.
And S30, when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection device in each cylinder body to inject oil according to the actual oil injection quantity smaller than the preset starting oil injection quantity, and controlling the oil injection quantity of the oil injection device in each cylinder body to recover to the preset starting oil injection quantity.
Through the steps S10 to S30, when the engine is detected to be in a cold start state, each cylinder body of the engine is controlled to be in a start stage, each cylinder body is controlled to work circularly, the oil injection quantity of the oil injection device in each cylinder body is controlled to be smaller than the preset start oil injection quantity, the mixed gas in the cylinder is compressed through the reciprocating motion of the piston of the cylinder body, the temperature in the cylinder is increased, less oil is injected, the mixed gas is ignited, the temperature in the cylinder is further increased, the accumulation of the oil in the cylinder is reduced, and the low-temperature start performance is optimized. And controlling the oil injection quantity of the oil injection devices in the cylinder bodies to be restored to the preset starting oil injection quantity until a preset starting state is reached. Thereby enabling the engine to be started smoothly.
Through the technical scheme in the step S10, after the start signal of the engine is obtained, the working condition parameters of the engine are obtained, wherein the working condition parameters of the engine include the ambient temperature, the engine oil temperature, the coolant temperature and the like during the operation of the engine, and can be acquired through various sensors in the engine. The rotational speed of the engine in the start-up phase may also be included.
Through the technical scheme in the step S20, the acquired operating condition parameters may be compared with preset operating condition parameter conditions, where the preset operating condition parameters may preset parameter conditions inside the ECU, which may include that the ambient temperature is below a preset low temperature threshold, and the engine oil temperature and the water temperature are below a preset temperature threshold. It may also include whether the engine speed is less than a preset speed. And when the current working condition parameters meet the preset working condition parameters, confirming that the current starting state is a cold starting state, starting the engine according to the control flow of the cold starting state of the engine, and controlling the starter to drive each cylinder body to work circularly. And when the current working condition parameters do not meet the preset working condition parameters, controlling the engine to normally start.
Through the technical scheme in the step S30, each cylinder body is controlled to work circularly, the oil injection devices in each cylinder body are controlled to inject oil according to the actual oil injection amount smaller than the preset starting oil injection amount, and the oil injection amount of the oil injection devices in each cylinder body is controlled to be recovered to the preset starting oil injection amount. In this embodiment, during the cylinder cycling, the oil injection device of each cylinder may be controlled to control the total effective oil injection amount, or may control the oil injection amount during each operation, and for example, the oil injection device of each cylinder may be controlled to stop injecting oil once every preset operation cycle.
As an exemplary embodiment, when N cylinders are operated in a cycle, each cylinder stops injecting one working cycle for every N-1 working cycles, and the injection stopping cycles are sequentially performed on each cylinder, for example, a four-cylinder engine, stops injecting one working cycle for every three working cycles. And the spraying stopping circulation is carried out in each cylinder body in sequence. See table 1 for exemplary:
TABLE 1
Wherein "1" is used to characterize the injection and "0" is used to characterize the stop of injection.
As another alternative embodiment, when it is determined that the engine is in a cold start state, real-time operating condition parameters of the engine may be obtained in real time, where the operating condition parameters may include a real-time engine speed, an engine water temperature value, an engine oil temperature value, and the like. After the real-time working condition parameter is obtained, the difference value between the real-time working condition parameter value of the engine and the preset working condition parameter value when the engine is in the preset starting state can be calculated in real time, and the preset working condition parameter value in the preset starting state can be the working condition parameter value when the engine can be started normally, for example, the water temperature of the engine is more than 0 ℃, the rotating speed of the engine is more than 20rpm and the like.
Since the current engine operating condition parameter value does not reach the preset operating condition parameter value, a difference value between the current engine operating condition parameter value and the preset operating condition parameter value can be calculated, and an amount of fuel injection reduction of the fuel injection device in each cylinder can be determined according to the difference value, wherein the amount of reduction is positively correlated with the difference value. For example, the lower the current temperature, the greater the reduction in fuel injection, and the less fuel injected. Therefore, when in the cold start state, the fuel injection quantity of each cylinder can be determined based on the current working condition parameters. The accumulation in the cylinder can be more accurately ensured to be reduced. And along with the progress of the start-up stage, its fuel injection quantity is in the dynamic change state, can spout required oil mass according to operating condition.
As another alternative, after determining the fuel injection amount reduction, the number of cycles of the preset cycle and the number of operation cycles of the stop injection may be determined based on the reduction, and after determining the reduction to be 25%, for example, in the case of four cylinders, one operation cycle may be stopped for every three operation cycles of the injection. When the reduction is determined to be 50%, two duty cycles may be injected for each injection, with the injection being discontinued.
As another alternative, the amount of fuel injected per injection may be uniformly reduced such that the total amount of fuel injected per one or more operating cycles is constant, and the amount of fuel injected per operating cycle may be determined based on the reduction, for example; and controlling the oil injection devices in the cylinder bodies to inject oil according to the oil injection quantity of each time in each working cycle. For example, after determining that the reduction is 25%, at each injection, injection is performed at 75% of the injection amount corresponding to the preset start-up state. And when the reduction is determined to be 50%, injecting oil by 50% of the oil injection amount corresponding to the preset starting state at each time of oil injection. And then can realize that each stroke or every reciprocating motion guarantees current combustion rate with comparatively even fuel injection quantity. Further reducing the accumulation of oil in the cylinder.
As an exemplary embodiment, as the starting stage proceeds, the temperature in the cylinder gradually rises, and the working condition of the engine gradually meets the working condition of a preset starting state, so that it is determined whether the working state of the engine reaches a first stable state; and when the working state reaches the first stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity, and maintaining the starter to continuously work for a preset time. As an exemplary embodiment, the first stable state may be that the engine speed reaches a preset speed, for example, 400rpm to 600rpm, or the temperature of the engine water or the temperature of the engine oil reaches a preset temperature, the engine is considered to be in a more stable state, and at this time, the fuel injection device injects fuel according to a normal fuel amount, and the evaporation and combustion of the fuel injection device may reach the preset state, so that the fuel injection amount may be restored to the preset starting fuel injection amount.
The torque of the engine may not be maintained to be operated, so that the starter is maintained to be operated continuously for a preset time, for example, the starter is maintained to be operated continuously for 1 to 3 seconds.
As an exemplary embodiment, it is determined whether the operating state of the engine reaches a second stable state; and when the working state reaches the second stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity. As an exemplary embodiment, the first stable state may be that the engine speed reaches a preset speed, for example, more than 600rpm, or the engine water temperature or the engine oil temperature reaches a preset temperature, and then the engine is considered to be in a stable state, and the engine generates enough torque to maintain its operation when each cylinder can be stably ignited. At this time, the starter power is turned off.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method according to the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present application or portions contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in the embodiments of the present application.
According to another aspect of the embodiment of the application, an engine cold start control device for implementing the engine cold start control method is also provided. FIG. 3 is a schematic diagram of an alternative engine cold start control apparatus according to an embodiment of the present application, which may include, as shown in FIG. 3:
the acquisition module 301 is used for acquiring working condition parameters of the engine;
a detection module 302 configured to detect whether the engine is in a cold start state based on the operating condition parameter;
the control module 303 is configured to control each cylinder to work circularly when the engine is in a cold start state, control the fuel injection amount of the fuel injection device in each cylinder to be smaller than a preset start fuel injection amount until the engine reaches a preset start state, and control the fuel injection amount of the fuel injection device in each cylinder to recover to the preset start fuel injection amount. It should be noted that the modules described above as a part of the apparatus may be operated in a hardware environment as shown in fig. 1, and may be implemented by software, or may be implemented by hardware, where the hardware environment includes a network environment.
According to still another aspect of the embodiments of the present application, there is also provided an electronic device for implementing the engine cold start control method, which may be a server, a terminal, or a combination thereof.
Fig. 4 is a block diagram of an alternative electronic device according to an embodiment of the present application, as shown in fig. 4, including a processor 402, a communication interface 404, a memory 406, and a communication bus 408, where the processor 402, the communication interface 404, and the memory 406 communicate with each other through the communication bus 408, and where,
a memory 406 for storing a computer program;
the processor 402, when executing the computer program stored in the memory 406, performs the following steps:
acquiring working condition parameters of an engine;
detecting whether the engine is in a cold start state or not based on the working condition parameters;
and when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection devices in each cylinder body to inject oil at an actual oil injection amount smaller than a preset starting oil injection amount until the engine reaches a preset start state, and controlling the oil injection amount of the oil injection devices in each cylinder body to recover to the preset starting oil injection amount.
Optionally, the electronic device may be an engine control system or an on-board computer.
Alternatively, in the present embodiment, the communication bus may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The memory may include RAM, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The processor may be a general-purpose processor, and may include but is not limited to: a CPU (Central Processing Unit), an NP (Network Processor), and the like; but also DSPs (Digital Signal Processing), ASICs (Application Specific Integrated circuits), FPGAs (Field-Programmable Gate arrays) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment is not described herein again.
It should be understood by those skilled in the art that the structure shown in fig. 4 is only an illustration, and the device implementing the engine cold start control method may be a terminal device, and the terminal device may be a terminal device such as a smart phone (e.g., an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, a Mobile Internet Device (MID), a PAD, and the like. Fig. 4 is a diagram illustrating the structure of the electronic device. For example, the terminal device may also include more or fewer components (e.g., network interfaces, display devices, etc.) than shown in FIG. 4, or have a different configuration than shown in FIG. 4.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disk, ROM, RAM, magnetic or optical disk, and the like.
According to still another aspect of an embodiment of the present application, there is also provided a storage medium. Alternatively, in the present embodiment, the above-described storage medium may be used for program codes for executing an engine cold start control method.
Optionally, in this embodiment, the storage medium may be located on at least one of a plurality of network devices in a network shown in the above embodiment.
Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:
acquiring working condition parameters of an engine;
detecting whether the engine is in a cold start state or not based on the working condition parameters;
and when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection devices in each cylinder body to inject oil at an actual oil injection amount smaller than a preset starting oil injection amount until the engine reaches a preset start state, and controlling the oil injection amount of the oil injection devices in each cylinder body to recover to the preset starting oil injection amount.
Optionally, the specific example in this embodiment may refer to the example described in the above embodiment, which is not described again in this embodiment.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a U disk, a ROM, a RAM, a removable hard disk, a magnetic disk, or an optical disk.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including instructions for causing one or more computer devices (which may be personal computers, servers, network devices, or the like) to execute all or part of the steps of the method described in the embodiments of the present application.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.
The units described as separate components may or may not be physically separate, and components displayed as units may or may not be physical units, may be located in one position, and may also be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (9)
1. A cold start control method of an engine including a plurality of cylinders, characterized by comprising:
acquiring working condition parameters of an engine;
detecting whether the engine is in a cold start state or not based on the working condition parameters;
when the engine is in a cold start state, controlling each cylinder body to work circularly, controlling the oil injection devices in each cylinder body to inject oil by actual oil injection quantity smaller than preset starting oil injection quantity until the engine reaches a preset start state, and controlling the oil injection quantity of the oil injection devices in each cylinder body to recover to the preset starting oil injection quantity; the control of the oil injection device in each cylinder body to inject oil according to the actual oil injection quantity smaller than the preset starting oil injection quantity comprises the following steps:
and controlling the oil injection devices of the cylinder bodies to stop oil injection once every other preset working cycle in sequence.
2. The engine cold start control method according to claim 1, wherein the reaching of the preset start state includes:
judging whether the working state of the engine reaches a first stable state or not;
and when the working state reaches the first stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity, and maintaining the starter to continuously work for a preset time.
3. The engine cold start control method according to claim 2, wherein the reaching of the preset start state includes:
judging whether the working state of the engine reaches a second stable state or not;
and when the working state reaches the second stable state, controlling the oil injection quantity of the oil injection device in each cylinder body to be recovered to the preset starting oil injection quantity.
4. The engine cold start control method according to claim 3, wherein the reaching of the preset start state includes:
at least one parameter value of the rotating speed, the engine oil temperature and the engine water temperature in the first stable state is smaller than the corresponding parameter value of the rotating speed, the engine oil temperature or the engine water temperature in the second stable state.
5. The engine cold start control method according to claim 1, characterized by comprising, when the engine is in a cold start state:
acquiring real-time working condition parameters of a current engine;
calculating the difference value between the current real-time working condition parameter value of the engine and the preset working condition parameter value when the engine is in a preset starting state;
and determining the fuel injection quantity reduction of the fuel injection devices in the cylinders based on the difference, wherein the reduction quantity is positively correlated with the difference.
6. The engine cold start control method of claim 5, wherein said controlling each of said cylinders to cycle, and controlling the fuel injection device in each of said cylinders to inject fuel at an actual fuel injection amount that is less than a preset start fuel injection amount comprises:
determining the fuel injection quantity of each working cycle based on the reduction quantity;
and controlling the oil injection devices in the cylinders to inject oil according to the oil injection quantity of each time in each working cycle.
7. An engine cold start control apparatus, the engine including a plurality of cylinders, the control apparatus comprising:
the acquisition module is used for acquiring working condition parameters of the engine;
the detection module is used for detecting whether the engine is in a cold start state or not based on the working condition parameters;
the control module is used for controlling each cylinder body to work circularly when the engine is in a cold starting state, controlling the oil injection amount of the oil injection device in each cylinder body to be smaller than a preset starting oil injection amount until the preset starting state is reached, and controlling the oil injection amount of the oil injection device in each cylinder body to be recovered to the preset starting oil injection amount;
the control module is also used for controlling the oil injection devices of the cylinder bodies to stop injecting oil once every preset working cycle.
8. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein said processor, said communication interface and said memory communicate with each other via said communication bus,
the memory for storing a computer program;
the processor configured to execute the engine cold start control method steps of any one of claims 1 to 6 by executing the computer program stored on the memory.
9. A storage medium readable by a computer, in which a computer program is stored, wherein the computer program is arranged to execute the engine cold start control method steps of any one of claims 1 to 6 when executed.
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