Engine stopping method, device, electronic equipment and vehicle

Abstract

The application provides an engine shutdown method and device, electronic equipment and vehicle. The method comprises the following steps: in the case that a shutdown signal is received, oil is injected into each cylinder combustion chamber according to the minimum injection amount corresponding to each cylinder combustion chamber in the engine, and spark plugs in each cylinder combustion chamber are ignited; after the spark plugs in each cylinder combustion chamber are ignited once, the oil injection into each cylinder combustion chamber is stopped, and the spark plugs in each cylinder combustion chamber are stopped from being ignited, so as to reduce the emission of hydrocarbons. Through the technical scheme of the application, a round of minimum oil injection is further performed on each cylinder combustion chamber when the engine is shut down, the residual fuel particles in the cylinder combustion chamber are fully combusted, the amount of hydrocarbon emission is reduced, and environmental pollution is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine control, and in particular to an engine shutdown method and device, an electronic device, and a vehicle. BACKGROUND

[0002] During the engine shutdown process, the emission of hydrocarbons is significantly higher than several times during normal working conditions, which can cause excessive emission of pollutants.

[0003] At present, since the engine shutdown mode is to stop ignition, the first shutdown cycle of the engine is still affected by the last ignition cycle. The last ignition cycle causes the cylinder to store hot residual exhaust gas, i.e., the gas after combustion, which assists in volatilizing the residual fuel particles in the cylinder, resulting in a sharp increase in the emission of hydrocarbons, which adversely affects the environment. SUMMARY

[0004] Therefore, the present application aims to provide an engine shutdown method and device, an electronic device, and a vehicle to perform one more round of minimum fuel injection in each cylinder combustion chamber during engine shutdown, fully burn the residual fuel particles therein, and reduce the emission of hydrocarbons and environmental pollution.

[0005] To achieve the above purpose, the present application provides an engine shutdown method, which comprises the following steps.

[0006] When a shutdown signal is received, fuel is injected into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine, and the spark plug in each cylinder combustion chamber is ignited.

[0007] After the spark plug in each cylinder combustion chamber is ignited once, fuel injection into each cylinder combustion chamber is stopped, and the spark plug in each cylinder combustion chamber is stopped from igniting to reduce the emission of hydrocarbons.

[0008] To achieve the above purpose, the present application also provides an engine shutdown device, which comprises the following modules.

[0009] A fuel injection and ignition module is configured to inject fuel into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine when a shutdown signal is received, and ignite the spark plug in each cylinder combustion chamber.

[0010] A shutdown processing module is configured to stop fuel injection into each cylinder combustion chamber after the spark plug in each cylinder combustion chamber is ignited once, and stop the spark plug in each cylinder combustion chamber from igniting to reduce the emission of hydrocarbons.

[0011] In order to achieve the above object, the application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the engine shutdown method provided by any one of the embodiments of the application when executing the program.

[0012] In order to achieve the above object, the application further provides a vehicle comprising the electronic device provided by any one of the embodiments of the application.

[0013] As can be seen from the above, the engine shutdown method provided by the application, in the case of receiving a shutdown signal, sprays oil into each cylinder combustion chamber according to the minimum oil injection amount corresponding to each cylinder combustion chamber in the engine, and controls the spark plug in each cylinder combustion chamber to ignite, so as to make each cylinder combustion chamber be able to fully burn with the minimum amount of fuel, reduce the emission of fuel particulate matter, i.e. hydrocarbons, after the spark plug in each cylinder combustion chamber is ignited once, stops spraying oil into each cylinder combustion chamber, and controls the spark plug in each cylinder combustion chamber to stop igniting, which realizes that when the engine is shut down, a round of minimum oil injection is further performed in each cylinder combustion chamber, the residual fuel particles therein are fully burned, the amount of hydrocarbon emission is reduced, and environmental pollution is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the application or related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 A flowchart of an engine shutdown method provided by an embodiment of the application;

[0016] Figure 2 A flowchart of another engine shutdown method provided by an embodiment of the application;

[0017] Figure 3 A structural schematic diagram of an engine shutdown device provided by an embodiment of the application;

[0018] Figure 4 A hardware structural schematic diagram of an electronic device provided by an embodiment of the application. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the application more clear, the application will be further described in detail below with reference to specific embodiments and drawings.

[0020] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meaning understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise defined. The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Figure 1 A flowchart of an engine shutdown method provided by the embodiments of the present application is mainly applicable to reducing hydrocarbon emissions when the engine is shut down. The method can be configured in an electronic device. As shown in the figure, the method can specifically include the following steps: Figure 1

[0022] S110, in the case of receiving a shutdown signal, according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine, injecting fuel into each cylinder combustion chamber, and controlling the spark plug ignition in each cylinder combustion chamber.

[0023] The shutdown signal is a signal for indicating that the engine stops running, so that the engine stops running when receiving the shutdown signal. The engine can be a fuel engine or a hybrid engine. Hybrid generally refers to oil-electric hybrid, i.e. the mixture of fuel (gasoline, diesel, etc.) and electric energy. The cylinder combustion chamber is a device for generating high-temperature gas when fuel is burned, which is an important part of the engine. The spark plug is an important element for ignition, which can introduce high-voltage electricity into the cylinder combustion chamber and make it jump through the electrode gap to generate sparks, thereby igniting the combustible mixture in the cylinder combustion chamber. The minimum fuel injection amount is to increase the fuel injection amount in the cylinder combustion chamber, so that the total fuel amount in the cylinder combustion chamber reaches the minimum ignition standard, i.e. the total fuel amount in the cylinder combustion chamber is just enough to be ignited by the spark plug.

[0024] ​Specifically, in the case of receiving the shutdown signal, the engine is about to stop running, but at this time, there are still fuel particles in each cylinder combustion chamber in the ignition cycle, that is, fuel remains, and directly stopping ignition and fuel injection will cause these fuel particles to be discharged with high-temperature gas, resulting in a large amount of hydrocarbons, which are actually small fuel particles that have not burned. Seriously affect the air, therefore, determine the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine. Further, when fuel is injected into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber, the total fuel amount in each cylinder combustion chamber reaches the minimum ignition standard, and the spark plug in the cylinder combustion chamber is ignited to ignite the fuel in the cylinder combustion chamber, so that it can be further burned, reducing the subsequent emission of small fuel particles.

[0025] On the basis of the above examples, fuel can be injected into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the following manner:

[0026] For each cylinder combustion chamber, determine the remaining fuel amount in the cylinder combustion chamber, and determine the difference between the pre-calibrated minimum combustion amount and the remaining fuel amount as the minimum fuel injection amount corresponding to the cylinder combustion chamber.

[0027] According to the minimum fuel injection amount, fuel is injected into the cylinder combustion chamber.

[0028] Wherein, the remaining fuel amount is the part of the fuel amount remaining in the cylinder combustion chamber after the last combustion. The minimum combustion amount is the minimum amount of fuel that can be ignited in the cylinder combustion chamber, that is, the amount of fuel that can just be ignited.

[0029] Specifically, for each cylinder combustion chamber, the remaining fuel amount in the cylinder combustion chamber is determined by calculation or directly by a fuel detection device, etc. Further, the pre-calibrated minimum combustion amount is subtracted from the remaining fuel amount, and the obtained value can be understood as how much fuel needs to be supplemented to just ignite, that is, the obtained value is the minimum fuel injection amount. Fuel is injected into the cylinder combustion chamber according to the minimum fuel injection amount, so as to be ignited and burned by the spark plug subsequently.

[0030] On the basis of the above examples, the remaining fuel amount in the cylinder combustion chamber can be estimated by the number of ignitions in the current start cycle, and the remaining fuel amount in the cylinder combustion chamber can be determined in the following manner:

[0031] Obtain the number of ignitions in the current start cycle of the engine;

[0032] Determine the remaining fuel amount in the cylinder combustion chamber in the current start cycle according to the pre-calibrated ignition number and remaining fuel amount correlation and the number of ignitions.

[0033] The current start cycle is a cycle between a start signal corresponding to a current stop signal and the stop signal. The ignition number is a statistical number of ignitions of the combustion chamber in the current start cycle. The ignition number and the remaining fuel quantity correlation can indicate the change of the remaining fuel quantity in the combustion chamber with the change of the ignition number. The correlation can be a nonlinear relationship obtained by experiment fitting.

[0034] Specifically, the ignition number is recorded when the current start cycle starts, and the ignition number in the current start cycle can be obtained until the stop signal is received. Further, the obtained ignition number is matched in the pre-calibrated ignition number and remaining fuel quantity correlation, and the matched remaining fuel quantity is taken as the remaining fuel quantity in the combustion chamber in the current start cycle.

[0035] On the basis of the above example, the remaining fuel quantity in the combustion chamber can be estimated by the start duration of the current start cycle, and the remaining fuel quantity in the combustion chamber can be determined by the following method:

[0036] The start duration of the current start cycle of the engine is obtained.

[0037] According to the pre-calibrated start duration and remaining fuel quantity correlation and the start duration, the remaining fuel quantity in the combustion chamber in the current start cycle is determined.

[0038] The start duration is the duration between the start signal and the stop signal in the current start cycle. The pre-calibrated start duration and remaining fuel quantity correlation can indicate the change of the remaining fuel quantity in the combustion chamber with the change of the start duration. The correlation can be a nonlinear relationship obtained by experiment fitting.

[0039] Specifically, the start time is recorded when the current start cycle starts, and the stop time is recorded until the stop signal is received. The duration between the start time and the stop time can be taken as the start duration. Further, the obtained start duration is matched in the pre-calibrated start duration and remaining fuel quantity correlation, and the matched remaining fuel quantity is taken as the remaining fuel quantity in the combustion chamber in the current start cycle.

[0040] On the basis of the above example, after the difference between the pre-calibrated minimum combustion quantity and the remaining fuel quantity is determined as the minimum injection quantity corresponding to the combustion chamber, the calibration minimum quantity can be set to avoid the situation that the combustion chamber cannot be combusted due to the error in obtaining the minimum injection quantity. Specifically, it can be:

[0041] If the minimum injection quantity is less than the calibration minimum quantity, the minimum injection quantity is updated to the calibration minimum quantity.

[0042] The calibration minimum amount is the minimum fuel injection amount per fuel injection, which can be calculated according to the volume of different cylinder combustion chambers and other parameters, or obtained through tests, which will not be described herein.

[0043] Specifically, if the minimum fuel injection amount is less than the calibration minimum amount, the minimum fuel injection amount is updated to the calibration minimum amount, so as to avoid that the fuel cannot be effectively injected according to the original minimum fuel injection amount, or the fuel amount in the cylinder combustion chamber cannot be ignited and combusted, and therefore, the calibration minimum amount is used as the new minimum fuel injection amount. If the minimum fuel injection amount is not less than the calibration minimum amount, the minimum fuel injection amount remains unchanged.

[0044] S120, after the spark plugs in all the cylinder combustion chambers are ignited once, stop injecting fuel into all the cylinder combustion chambers, and control the spark plugs in all the cylinder combustion chambers to stop ignition, so as to reduce the emission of hydrocarbons.

[0045] Specifically, after the spark plugs in all the cylinder combustion chambers are ignited once, the remaining fuel particles in each cylinder combustion chamber before receiving the stop signal have been ignited and combusted sufficiently. In this case, it can be determined that the amount of remaining fuel particles in each cylinder combustion chamber is small, and therefore, fuel injection into all the cylinder combustion chambers is stopped, and the spark plugs in all the cylinder combustion chambers are controlled to stop ignition, so as to complete the stop of the engine and reduce the emission of hydrocarbons when the engine stops.

[0046] It should be noted that if the engine stop mode is to stop ignition, that is, the spark plug does not discharge, there are still fuel particles vaporized by the hot residual exhaust gas, and then the emission of hydrocarbons increases. Therefore, the engine stop mode of the embodiment of the present application is to stop fuel injection, and the fuel injection is stopped after one ignition cycle, so that in the first ignition cycle, the ignition energy can ignite the cylinder gas (the remaining fuel amount and the minimum fuel injection amount), which can help the fuel particles to combust sufficiently and reduce the content of hydrocarbons in the residual exhaust gas.

[0047] The engine stop method provided by the embodiment, in the case of receiving a stop signal, injects fuel into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine, and controls the spark plug in each cylinder combustion chamber to ignite, so as to make each cylinder combustion chamber combust with the minimum fuel amount and reduce the emission of fuel particles, that is, hydrocarbons. After the spark plugs in all the cylinder combustion chambers are ignited once, stop injecting fuel into all the cylinder combustion chambers, and control the spark plugs in all the cylinder combustion chambers to stop ignition, so as to realize that one more minimum fuel injection is performed in each cylinder combustion chamber when the engine stops, the residual fuel particles are combusted sufficiently, the emission of hydrocarbons is reduced, and the environmental pollution is reduced.

[0048] Figure 2 The flowchart of another engine shutdown method provided by the embodiments of the present application, on the basis of the above-mentioned embodiments, optionally, the way of injecting fuel into each cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine is exemplarily described. Wherein, the explanation of the same or corresponding terms as the above-mentioned embodiments will not be repeated here. As shown in the above-mentioned embodiments, the method can specifically include the following steps: Figure 2

[0049] S210, in the case of receiving the shutdown signal, respectively determine the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine, and according to the minimum fuel injection amount corresponding to each cylinder combustion chamber, inject fuel into each cylinder combustion chamber in turn, starting from the next cylinder combustion chamber of the cylinder combustion chamber that is working at the time of receiving the shutdown signal, and control the spark plug ignition in each cylinder combustion chamber.

[0050] Wherein, the cylinder working sequence is the sequence of each cylinder combustion chamber in the engine to generate power by injecting fuel ignition when the engine starts. At present, the engine is mostly a four-cylinder engine, and there are also engines with other numbers. Exemplarily, the working sequence of a four-cylinder engine can be 1-3-2-4, wherein the numbers represent the numbers of different cylinder combustion chambers.

[0051] Specifically, in the case of receiving the shutdown signal, the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine is determined. Further, according to the engine cylinder working sequence, the next cylinder combustion chamber of the cylinder combustion chamber that is working at the time of receiving the shutdown signal is determined, and starting from the determined next cylinder combustion chamber, according to the engine cylinder working sequence, to the cylinder combustion chamber that is working at the time of receiving the shutdown signal, that is, each cylinder combustion chamber in turn performs the following operation: according to the minimum fuel injection amount corresponding to the cylinder combustion chamber, inject fuel into the cylinder combustion chamber, and control the spark plug ignition in the cylinder combustion chamber. Through the above operation, the last time fuel injection and ignition before shutdown can be performed in each cylinder combustion chamber according to the cylinder working sequence, so as to fully burn the fuel particles in the cylinder combustion chamber.

[0052] It should be noted that the multiple fuel injection of each cylinder combustion chamber according to the working sequence will not affect the user's perception of the engine shutdown time. Exemplarily, the idle speed of a certain engine is 750r / min, and the engine crankshaft completes a working cycle every two revolutions of the four cylinders, that is, only delays 0.16 seconds to shut down, and the user is basically in a state of no perception.

[0053] On the basis of the above-mentioned example, before injecting fuel into the cylinder combustion chamber according to the minimum fuel injection amount corresponding to each cylinder combustion chamber in the engine, the following operation can also be performed:

[0054] Obtain the current water temperature of the cooling water of the engine, and judge whether the current water temperature is greater than the starting water temperature.​

[0055] The starting water temperature is a pre-set water temperature of the cooling water for starting the engine stop method of the application, for example, it can be 80℃, and the specific temperature can be set according to the attachment of the fuel particles.

[0056] Specifically, the current water temperature of the cooling water of the engine can be obtained by a temperature sensor, and it is determined whether the current water temperature is greater than the starting water temperature. If the current water temperature is not greater than the starting water temperature, it indicates that the fuel particles in the combustion chamber of each cylinder of the engine will not easily vaporize, most of which are attached to the cylinder wall and will not be discharged with the exhaust gas, so the engine stop method in the embodiments of the application does not need to be executed, and the engine can be directly stopped. If the current water temperature is greater than the starting water temperature, it indicates that the fuel particles in the combustion chamber of each cylinder of the engine will vaporize and be discharged with the exhaust gas, resulting in an increase in the amount of hydrocarbon emissions, so the engine stop method in the embodiments of the application is executed, specifically, the step of injecting oil into the combustion chamber of each cylinder according to the minimum injection amount of the combustion chamber of each cylinder in the engine.

[0057] S220, after the spark plug in each cylinder combustion chamber is ignited once, stop injecting oil into each cylinder combustion chamber, and control the spark plug in each cylinder combustion chamber to stop ignition to reduce the emission of hydrocarbons.

[0058] The engine stop method provided in the embodiments can effectively distinguish the injection amount in different cylinder combustion chambers by determining the minimum injection amount of each cylinder combustion chamber in the engine, avoiding the influence of the difference between the cylinder combustion chambers on the subsequent combustion process, and then, according to the order of the engine cylinder work, starting from the next cylinder combustion chamber of the cylinder combustion chamber that is working when the stop signal is received, injecting oil into each cylinder combustion chamber according to the minimum injection amount of each cylinder combustion chamber, so that only the normal ignition combustion in the cylinder can be achieved by delaying the injection of the working cycle and stopping the injection and ignition, thereby fully reducing the residual fuel particles in each cylinder combustion chamber and reducing the emission of hydrocarbons.

[0059] It should be noted that the method of the embodiments of the application can be executed by a single device, such as a computer or a server, etc. The method of the embodiments of the application can also be applied to a distributed scenario, and completed by multiple devices cooperating with each other. In this distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiments of the application, and the multiple devices can interact with each other to complete the method.

[0060] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0061] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides an engine shutdown device. Figure 3 This is a schematic diagram of an engine shutdown device provided in an embodiment of this application, with reference to... Figure 3 The engine shutdown device includes: a fuel injection ignition module 310 and a shutdown processing module 320.

[0062] The fuel injection and ignition module 310 is used to inject fuel into each cylinder combustion chamber according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber in the engine when a shutdown signal is received, and to control the spark plug ignition in each cylinder combustion chamber; the shutdown processing module 320 is used to stop injecting fuel into each cylinder combustion chamber after each spark plug in each cylinder combustion chamber has ignited once, and to control the spark plug in each cylinder combustion chamber to stop ignition, so as to reduce hydrocarbon emissions.

[0063] Based on the above example, optionally, the fuel injection ignition module 310 is further configured to determine the remaining fuel quantity in each cylinder combustion chamber, and determine the difference between the pre-calibrated minimum combustion quantity and the remaining fuel quantity as the minimum fuel injection quantity corresponding to the cylinder combustion chamber; and inject fuel into the cylinder combustion chamber according to the minimum fuel injection quantity.

[0064] Based on the above example, optionally, the fuel injection ignition module 310 is also used to obtain the number of ignitions in the current start-up cycle of the engine; and determine the amount of remaining fuel in the cylinder combustion chamber in the current start-up cycle according to the pre-calibrated correlation between the number of ignitions and the remaining fuel quantity and the number of ignitions.

[0065] Based on the above example, optionally, the fuel injection ignition module 310 is also used to obtain the start-up duration of the current start-up cycle of the engine; and determine the remaining fuel quantity in the cylinder combustion chamber in the current start-up cycle according to the pre-calibrated correlation between the start-up duration and the remaining fuel quantity and the start-up duration.

[0066] On the basis of the above examples, optionally, after determining the minimum injection amount corresponding to the cylinder combustion chamber as the difference between the pre-calibrated minimum fuel injection amount and the remaining fuel amount, the device further comprises a minimum injection amount adjustment module configured to update the minimum injection amount to the calibrated minimum amount if the minimum injection amount is less than the calibrated minimum amount.

[0067] On the basis of the above examples, optionally, the fuel injection and ignition module 310 is further configured to determine the minimum injection amount corresponding to each cylinder combustion chamber in the engine; and start injecting fuel into each cylinder combustion chamber in sequence according to the minimum injection amount corresponding to each cylinder combustion chamber, starting from the next cylinder combustion chamber of the cylinder combustion chamber that is doing work when the stop signal is received.

[0068] On the basis of the above examples, optionally, before injecting fuel into the cylinder combustion chamber according to the minimum injection amount corresponding to each cylinder combustion chamber in the engine, the device further comprises a start judgment module configured to obtain the current water temperature of the cooling water of the engine and determine whether the current water temperature is greater than the start water temperature; and the fuel injection and ignition module 310 is further configured to inject fuel into the cylinder combustion chamber according to the minimum injection amount corresponding to each cylinder combustion chamber in the engine if the current water temperature is greater than the start water temperature.

[0069] For the convenience of description, the above device is described as various modules in terms of functions. Of course, the functions of each module can be implemented in one or more software and / or hardware in the implementation of the present application.

[0070] The device of the above embodiments is used to implement the corresponding engine stop method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0071] Based on the same inventive concept, the present application also provides an electronic device corresponding to any of the above method embodiments, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the engine stop method of any of the above embodiments.

[0072] Figure 4 A more specific hardware structure of an electronic device provided by the present embodiment is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040 and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030 and the communication interface 1040 are connected to each other through the bus 1050 for communication within the device.

[0073] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing relevant programs to implement the technical solutions provided by the embodiments of the present specification.

[0074] The memory 1020 can be implemented in the form of a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present specification are implemented by software or firmware, the relevant program codes are saved in the memory 1020 and called and executed by the processor 1010.

[0075] The input / output interface 1030 is configured to connect input / output modules to implement information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input devices can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices can include a display, a speaker, a vibrator, an indicator light, etc.

[0076] The communication interface 1040 is configured to connect a communication module (not shown in the figure) to implement the communication interaction between the device and other devices. The communication module can realize communication through a wired manner (such as USB, network cable, etc.) or through a wireless manner (such as mobile network, WIFI, Bluetooth, etc.).

[0077] The bus 1050 includes a channel for transmitting information between various components (such as the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0078] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only include the components necessary to implement the solutions of the embodiments of the present specification, and does not have to include all the components shown in the figure.

[0079] The electronic device of the above-mentioned embodiments is used to implement the engine shutdown method of any one of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0080] Based on the same inventive concept, the present application also provides a vehicle, wherein the vehicle comprises the electronic device according to the above-mentioned embodiments.

[0081] Based on the same inventive concept, the present application also provides a computer readable storage medium, which stores computer instructions for causing the computer to execute the engine shutdown method according to any one of the above-mentioned embodiments.

[0082] The computer readable medium of the present embodiments includes permanent and non-permanent, removable and non-removable media, which can be implemented by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0083] The computer instructions stored in the storage medium of the above-mentioned embodiments are used to cause the computer to execute the engine shutdown method according to any one of the above-mentioned embodiments, and have the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0084] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present application (including the claims) is limited to these examples; the above embodiments or technical features between different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of the aspects of the present embodiments as described above. In order to be brief, they are not provided in detail.

[0085] Additionally, to simplify the description and discussion, and so as not to obscure the embodiments of the application being presented, the well-known functions or constructions of integrated circuit (IC) chips and other components can or can not be shown in the figures and will be omitted as not to unnecessarily obscure the embodiments of the application being presented. Moreover, the devices can be shown in block diagram form in order to avoid unnecessary obscurity of the present embodiments, and this also acknowledges the fact that the details in regard to the implementation of such block diagram devices are highly dependent on the platform within which the present embodiments are to be implemented (i.e., such details should be well within the purview of one of ordinary skill in the art). Where specific details are set forth in order to describe an illustrative embodiment of the application, it will be apparent to one of ordinary skill in the art that the embodiment of the application can be practiced without these specific details. In other instances, detailed descriptions of well-known methods, devices, and materials can be omitted so as not to obscure the description of the present embodiments of the application. It is intended that the specific embodiments disclosed herein are presented by way of example only and that the present application is not limited by the embodiments presented herein.

[0086] Although the present application has been described in connection with certain specific embodiments thereof, many modifications, changes, variations and substitutions will be apparent to those of ordinary skill in the art. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0087] It is therefore intended that the present application cover all such modifications, changes, variations and substitutions that fall within the broad scope of the appended claims. Accordingly, any one or more of the features, functions, structures, or other aspects of the embodiments described herein can be combined in any suitable manner to form additional embodiments, which are also within the scope of the present application. Thus, various additional embodiments of the present application are also contemplated. Therefore, the foregoing description is not intended to be limiting. Hence, any non-included alternatives, modifications, or variations should be understood as within the scope of the present application.

Claims

1. A method for stopping an engine, characterized in that, include: Upon receiving a shutdown signal, for each cylinder combustion chamber, the remaining fuel quantity in the cylinder combustion chamber is determined, and the difference between the pre-calibrated minimum combustion quantity and the remaining fuel quantity is determined as the minimum fuel injection quantity corresponding to the cylinder combustion chamber; according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber in the engine, fuel is injected into each cylinder combustion chamber, and the spark plug ignition in each cylinder combustion chamber is controlled. After each spark plug in the combustion chamber of each cylinder ignites once, fuel injection into each cylinder combustion chamber is stopped, and the spark plugs in each cylinder combustion chamber are controlled to stop ignition in order to reduce hydrocarbon emissions.

2. The method according to claim 1, characterized in that, Determining the remaining fuel quantity in the cylinder combustion chamber includes: Obtain the number of ignitions in the current start-up cycle of the engine; The remaining fuel quantity in the cylinder combustion chamber during the current start-up cycle is determined based on the pre-calibrated correlation between the number of ignitions and the remaining fuel quantity, as well as the number of ignitions.

3. The method according to claim 1, characterized in that, Determining the remaining fuel quantity in the cylinder combustion chamber includes: Obtain the start duration of the current start cycle of the engine; Based on the pre-calibrated correlation between start-up duration and remaining fuel quantity, and the start-up duration, the remaining fuel quantity in the cylinder combustion chamber during the current start-up cycle is determined.

4. The method according to claim 1, characterized in that, After determining the difference between the pre-calibrated minimum combustion quantity and the remaining fuel quantity as the minimum fuel injection quantity corresponding to the cylinder combustion chamber, the method further includes: If the minimum fuel injection quantity is less than the calibrated minimum quantity, then the minimum fuel injection quantity is updated to the calibrated minimum quantity.

5. The method according to claim 1, characterized in that, The step of injecting fuel into each cylinder combustion chamber according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber in the engine includes: According to the engine cylinder power sequence, starting from the next cylinder combustion chamber after the cylinder combustion chamber that is currently working when the stop signal is received, fuel is injected into each cylinder combustion chamber sequentially according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber.

6. The method according to claim 1, characterized in that, Before injecting fuel into the cylinder combustion chamber according to the minimum fuel injection quantity corresponding to the cylinder combustion chamber in the engine, the method further includes: Obtain the current temperature of the engine's coolant and determine whether the current temperature is greater than the starting temperature. The step of injecting fuel into each cylinder combustion chamber according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber in the engine includes: If the current water temperature is higher than the starting water temperature, then fuel is injected into the cylinder combustion chamber according to the minimum fuel injection quantity corresponding to the cylinder combustion chamber in the engine.

7. An engine shutdown device, characterized in that, include: The fuel injection and ignition module is used to determine the remaining fuel quantity in each cylinder combustion chamber when a shutdown signal is received, and to determine the difference between the pre-calibrated minimum combustion quantity and the remaining fuel quantity as the minimum fuel injection quantity corresponding to the cylinder combustion chamber; to inject fuel into each cylinder combustion chamber according to the minimum fuel injection quantity corresponding to each cylinder combustion chamber in the engine, and to control the spark plug ignition in each cylinder combustion chamber; The shutdown processing module is used to stop injecting fuel into each cylinder combustion chamber after the spark plugs in each cylinder combustion chamber have ignited once, and to control the spark plugs in each cylinder combustion chamber to stop ignition, so as to reduce hydrocarbon emissions.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the engine shutdown method as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, The vehicle includes the electronic equipment as described in claim 8.

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