CN114607546B - Engine protection method and device, vehicle and storage medium - Google Patents
Engine protection method and device, vehicle and storage medium Download PDFInfo
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- CN114607546B CN114607546B CN202210292784.4A CN202210292784A CN114607546B CN 114607546 B CN114607546 B CN 114607546B CN 202210292784 A CN202210292784 A CN 202210292784A CN 114607546 B CN114607546 B CN 114607546B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
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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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- 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 invention relates to the technical field of vehicles, and particularly discloses an engine protection method, an engine protection device, a vehicle and a storage medium, wherein the engine protection method is used for acquiring an engine starting parameter by acquiring an engine starting request and determining that the rotating speed of an engine cannot rise suddenly based on the engine starting parameter; then acquiring fuel injection enabling parameters of all cylinders of the engine, and evaluating whether all cylinders of the engine are fuel injection enabled or not based on the fuel injection enabling parameters; and if the fuel injection of each cylinder is enabled, the engine is allowed to start. The method can effectively avoid sudden rise of the rotating speed and/or surge of the supercharger after the engine is started and caused by error calibration of the ECU data or temporary modification and forgetting recovery of the ECU data, thereby protecting the engine and preventing accidents.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to an engine protection method, an engine protection device, a vehicle, and a storage medium.
Background
Some abnormal actions such as sudden rise of rotation speed and surge of a supercharger may occur after the engine is started successfully, which is often caused by abnormality of the rotation speed and injection control path of the ECU, and may be caused by error calibration of the ECU data or forgetting restoration of temporary modification of the ECU data. However, the existing ECU control method lacks monitoring of the state before the engine is started, and the phenomenon of sudden rise in rotation speed or surge of the supercharger after the engine is successfully started cannot be avoided, which easily causes the engine to be damaged.
Disclosure of Invention
The invention aims at: an engine protection method, an engine protection device, a vehicle and a storage medium are provided, so that the problem that the phenomenon that the engine is damaged easily due to sudden rise of the rotating speed and surge of a supercharger after the engine is successfully started due to lack of detection of the state before the engine is started in the prior art is solved.
In one aspect, the present invention provides an engine protection method comprising:
acquiring an engine starting request;
acquiring an engine starting parameter, and determining that the engine rotating speed cannot rise based on the engine starting parameter, wherein the engine starting parameter comprises an accelerator opening degree, an idling to rated rotating speed switch state and an accelerator-rotating speed control curve;
acquiring fuel injection enabling parameters of each cylinder of an engine;
evaluating whether each cylinder of the engine is fuel injection enabled or not based on the fuel injection enabling parameters;
and if the fuel injection of each cylinder is enabled, the engine is allowed to start.
As a preferred technical solution of the engine protection method, if any cylinder is not enabled by fuel injection, the engine is not allowed to start.
As the preferable technical scheme of the engine protection method, if any cylinder is enabled without oil injection, the first alarm information is output.
As a preferred technical solution of the engine protection method, determining that the engine speed does not rise suddenly based on the engine start parameter includes:
judging whether the opening of the accelerator is zero, judging whether an idling-to-rated rotation speed switch is activated, and judging whether an accelerator-rotation speed control curve is abnormal;
when the throttle opening is equal to zero, the idle speed to rated rotation speed switch is not activated, and the throttle-rotation speed control curve is normal, the rotation speed of the engine is determined not to be suddenly increased.
As a preferable technical scheme of the engine protection method, when the accelerator opening is not equal to zero, outputting second alarm information and not allowing the engine to start.
As a preferred embodiment of the engine protection method, when the idle-to-rated speed switch is activated, a third warning message is output and the engine is not allowed to start.
As a preferable technical scheme of the engine protection method, when the throttle-rotation speed control curve is abnormal, a fourth alarm message is output and the engine is not allowed to start.
The invention also provides an engine protection device, comprising:
the request acquisition module is used for acquiring an engine starting request;
the first parameter acquisition module is used for acquiring engine starting parameters;
a determining module for determining that an engine speed does not rise suddenly based on the engine start parameter;
the second parameter acquisition module is used for acquiring fuel injection enabling parameters of each cylinder of the engine;
the evaluation module is used for evaluating whether each cylinder of the engine is enabled by oil injection or not based on the oil injection enabling parameters;
and the output module is used for allowing the engine to start when the fuel injection of each cylinder is enabled.
As a preferred embodiment of the engine protection device, the determining module includes:
the accelerator opening judging unit is used for judging whether the accelerator opening is zero or not;
the idle speed to rated rotation speed switch state judging unit is used for judging whether the idle speed to rated rotation speed switch is activated or not;
a control curve judging unit for judging whether the throttle-rotation speed control curve is abnormal;
and the determining unit is used for determining that the engine speed does not rise suddenly when the accelerator opening is equal to zero, the idle speed to rated speed switch is not activated and the accelerator-speed control curve is normal.
The present invention also provides a storage medium having stored thereon a computer program, wherein the program, when executed by a drive controller, implements the engine protection method described in any of the above aspects.
The beneficial effects of the invention are as follows:
the invention provides an engine protection method, a device, a vehicle and a storage medium, wherein the engine protection method obtains an engine starting parameter by obtaining an engine starting request and determines that the engine rotating speed cannot rise suddenly based on the engine starting parameter; then acquiring fuel injection enabling parameters of all cylinders of the engine, and evaluating whether all cylinders of the engine are fuel injection enabled or not based on the fuel injection enabling parameters; and if the fuel injection of each cylinder is enabled, the engine is allowed to start. The method can effectively avoid sudden rise of the rotating speed and/or surge of the supercharger after the engine is started and caused by error calibration of the ECU data or temporary modification and forgetting recovery of the ECU data, thereby protecting the engine and preventing accidents.
Drawings
FIG. 1 is a flowchart of a method for protecting an engine according to an embodiment of the present invention;
FIG. 2 is a second flowchart of an engine protection method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an engine protection device according to an embodiment of the present invention.
In the figure:
310. a request acquisition module; 320. a first parameter acquisition module; 330. a determining module; 340. a second parameter acquisition module; 350. an evaluation module; 360. and an output module.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Example 1
After the engine is started successfully, if the vehicle is in a normal state, the engine rotates at an idle speed; but some abnormal phenomena such as sudden increase of the rotation speed from the idle speed, surge of the supercharger, etc. may also occur. Some of these anomalies are due to ECU speed and injection control path anomalies, which may be due to ECU data calibration errors or to ECU data debugging temporary modifications forgetting to recover. However, the prior art lacks an assessment of whether the engine would have suddenly risen in speed due to the above-mentioned reasons before the engine is started, and thus the engine cannot be effectively protected.
In this regard, the present embodiment provides an engine protection method that can evaluate whether an engine may experience a sudden rise in rotational speed and a surge in a supercharger before the engine is started to determine whether the engine may be started, and can provide effective protection for the engine. The engine protection method may be performed by an engine protection device, which may be implemented in software and/or hardware and integrated in a vehicle.
Specifically, as shown in fig. 1, the engine protection method includes the following steps.
S110: an engine start request is obtained.
The driving controller can acquire an engine request through interaction with the ECU, and can also judge whether an engine starting request is input or not through acquiring the state of the ignition switch of the vehicle. Specifically, the ECU monitors the state of the ignition switch in real time, when the vehicle is parked, the ignition switch is in a turned-off state, at this time, no engine start request is input in the ECU, and the driving controller cannot acquire the engine start request; when a driver twists the ignition switch through a key, the whole vehicle controller acquires an engine starting request and sends the engine starting request to the driving controller. It is noted that, for a vehicle provided with a one-touch start button, the ECU monitors whether the one-touch start button is pressed, and when pressed, the ECU obtains an engine start request and sends it to the drive controller.
S120: an engine starting parameter is obtained.
In this embodiment, the engine starting parameters include accelerator opening, idle to rated speed switch state, and accelerator-speed control curve.
The accelerator opening may be collected by a position sensor provided at the accelerator pedal or a flow sensor provided at the fuel supply line. Under normal conditions, the accelerator opening is zero when the vehicle is parked, but during the debugging process of the vehicle, the accelerator opening may be adjusted to match the debugging requirement, for example, the accelerator opening is adjusted to a non-zero value, but when the debugging is finished, a debugger forgets to reset the accelerator opening, which results in that the accelerator is already in an open state before the engine is started, if the engine is started at the moment, the rotating speed will suddenly rise, the engine is easily damaged, and the safety hazard exists.
The vehicle is generally provided with a generator, the generator can be driven by the engine to charge the storage battery in the driving process, the idling-to-rated-speed switch is used for controlling whether the generator is involved in power generation, when the idling-to-rated-speed switch is not activated, the engine can not drive the generator to rotate, but when the idling-to-rated-speed switch is started, the engine not only drives the generator to rotate, but also has the requirement on the minimum rotating speed of the engine, the minimum rotating speed of the engine is required to reach the rated rotating speed, and the rated rotating speed is far greater than the idling. When debugging personnel are debugging the engine, the idle speed is possibly activated to the rated rotation speed switch and forgets to reset after the debugging is finished, and when the engine is started, the rotation speed of the engine can be suddenly increased to the rated rotation speed from the idle speed, the engine is easy to damage, and the engine has potential safety hazard.
The throttle-speed control curve is a control curve arranged in the ECU, the ECU controls the output speed of the engine based on the throttle opening, and the throttle-speed control curve is normal in normal conditions, however, when debugging personnel debugs the engine, parameters of the throttle-speed curve can be changed to adapt to some debugging requirements, for example, when the throttle opening is lower, the speed setting is higher, and if the debugging personnel forgets to reset the throttle-speed control curve after the adjustment is finished, the speed of the engine is suddenly increased after the engine is started successfully, the engine is easily damaged, and the safety hazard is caused.
S130: it is determined that the engine speed does not rise suddenly based on the engine start parameter.
When the engine speed is determined not to rise suddenly, the throttle opening, the idle speed to rated speed switch state and the throttle-speed control curve are all in a normal state.
S140: and acquiring fuel injection enabling parameters of each cylinder of the engine.
The driving controller can acquire fuel injection enabling parameters of each cylinder of the engine through interaction with the ECU. When debugging personnel debugs the engine, whether each cylinder sprays oil and enables can be controlled through the ECU. Specifically, each cylinder may be calibrated by 0 and 1, and when calibrated to 0, the cylinder does not participate in fuel injection enabling, and when calibrated to 1, the cylinder participates in fuel injection enabling. However, after the debugging is finished, if one or more parameters calibrated by the cylinders are not returned to 1, the cylinders are enabled without fuel injection after the engine is started, and the supercharger is caused to surge.
S150: whether fuel injection is enabled or not is evaluated for each cylinder of the engine based on the fuel injection enabling parameters.
Specifically, the driving controller judges whether each cylinder participates in fuel injection enabling according to whether the calibration value of each cylinder is 1.
If all the cylinders are enabled by oil injection, S160 is executed; if any of the cylinders is not fuel injection enabled, S170 is performed.
S160: allowing the engine to start.
S170: and outputting the first alarm information.
The first alarm information may be used to remind the driver that a certain cylinder does not participate in enabling.
According to the engine protection method provided by the embodiment, the engine starting parameters are obtained by obtaining the engine starting request, and the engine speed is determined not to rise based on the engine starting parameters; then acquiring fuel injection enabling parameters of all cylinders of the engine, and evaluating whether all cylinders of the engine are fuel injection enabled or not based on the fuel injection enabling parameters; and if the fuel injection of each cylinder is enabled, the engine is allowed to start. The method can effectively avoid sudden rise of the rotating speed and/or surge of the supercharger after the engine is started and caused by error calibration of the ECU data or temporary modification and forgetting recovery of the ECU data, thereby protecting the engine and preventing accidents.
Example two
The present embodiment provides an engine protection method that is further embodied on the basis of the first embodiment described above.
Specifically, as shown in fig. 2, the engine protection method includes the following steps.
S210: an engine start request is obtained.
S220: an engine starting parameter is obtained.
S230: it is determined that the engine speed does not rise suddenly based on the engine start parameter.
Specifically, step S230 includes the following steps.
S231: and judging whether the throttle opening is zero.
If the accelerator opening is not equal to zero, S232 is executed.
S232: judging whether an idling to rated rotation speed switch is activated or not;
if the idle to rated speed switch is not activated, S233 is performed.
S233: judging whether the throttle-rotating speed control curve is abnormal or not.
And if the throttle-speed control curve is normal, S240 is performed.
It should be noted that, in this embodiment, a scheme is exemplarily given for sequentially determining whether the accelerator opening is zero, whether the idle to rated rotation speed switch is activated, and whether the accelerator-rotation speed control curve is abnormal. In other embodiments, it may also be determined whether the accelerator opening is zero, the idle to rated speed switch is active, and the accelerator-to-speed control curve is abnormal.
Judging whether the accelerator opening is zero, and comparing the acquired actual accelerator opening with zero to determine; and judging whether the switch for judging the speed to the rated rotation speed is activated or not, wherein the driving controller can be obtained through interaction with the ECU. When judging whether the accelerator-rotation speed control curve is abnormal, pre-storing a normal accelerator-rotation speed control curve in the driving controller in advance, acquiring an actual accelerator-rotation speed control curve in the ECU by interaction with the ECU, comparing the actual accelerator-rotation speed control curve with the normal accelerator-rotation speed control curve, if the actual accelerator-rotation speed control curve and the normal accelerator-rotation speed control curve are the same, indicating that the accelerator-rotation speed control curve is normal, and if the accelerator-rotation speed control curve and the normal accelerator-rotation speed control curve are different, indicating that the accelerator-rotation speed control curve is abnormal.
When the accelerator opening is equal to zero, the idle to rated speed switch is not activated, and the accelerator-speed control curve is normal, it is determined that the engine speed does not rise suddenly, and step S240 may be performed. When the accelerator opening is not equal to zero, the idling to rated rotation speed switch is activated, and any one of the accelerator-rotation speed control curve abnormality occurs, an alarm message is output, and the engine is not allowed to start.
If the accelerator opening is not equal to zero, executing S234; executing S235 if the idle to rated rotation speed switch is activated; if the throttle-speed control curve is abnormal, S236 is executed.
S234: and outputting second alarm information.
And reminding the driver that the accelerator opening is not reset through the second alarm information.
S235: and outputting third alarm information.
The driver can be reminded of the fact that the idle speed reaches the rated rotation speed at the moment and the switch is not reset through the third alarm information.
S236: and outputting fourth alarm information.
The fourth alarm information can remind the driver of the setting error of the accelerator-rotating speed control curve.
S240: and acquiring fuel injection enabling parameters of each cylinder of the engine.
S250: whether fuel injection is enabled or not is evaluated for each cylinder of the engine based on the fuel injection enabling parameters.
If fuel injection is enabled for each cylinder, S260 is performed. If any of the cylinders is not fuel injection enabled, S270 is performed.
S260: allowing the engine to start.
S270: and outputting the first alarm information.
After steps S234, S235, S236 and S270, the engine protection method further includes step S280.
S280: engine starting is not allowed.
According to the engine protection method provided by the embodiment, the engine starting parameters are obtained by obtaining the engine starting request, and the engine speed is determined not to rise based on the engine starting parameters; then acquiring fuel injection enabling parameters of all cylinders of the engine, and evaluating whether all cylinders of the engine are fuel injection enabled or not based on the fuel injection enabling parameters; and if the fuel injection of each cylinder is enabled, the engine is allowed to start. When the rotation speed of the engine is determined to be suddenly increased, or when the cylinder is determined to be not in oil injection enabling state, alarm information is sent, and the engine is not allowed to start, so that the sudden increase of the rotation speed and/or the surge of a supercharger after the engine is started, which are caused by the fact that the ECU data calibration is wrong or the ECU data is temporarily modified and forgotten to restore, can be effectively avoided, the engine can be further protected, and accidents are prevented.
Example III
The present embodiment provides an engine protection device for implementing the engine protection method in the above embodiment.
Specifically, as shown in fig. 3, the engine protection device includes a request acquisition module 310, a first parameter acquisition module 320, a determination module 330, a second parameter acquisition module 340, an evaluation module 350, and an output module 360. Wherein, the request acquisition module 310 is configured to acquire an engine start request; the first parameter obtaining module 320 is configured to obtain an engine starting parameter; the determination module 330 is configured to determine that the engine speed does not jump based on the engine start parameter; the second parameter obtaining module 340 is configured to obtain fuel injection enabling parameters of each cylinder of the engine; the evaluation module 350 is configured to evaluate whether each cylinder of the engine is fuel injection enabled based on the fuel injection enabling parameter; the output module 360 is operable to allow engine starting when fuel injection to each of the cylinders is enabled.
Wherein, the determining module 330 includes:
the accelerator opening judging unit is used for judging whether the accelerator opening is zero or not;
the idle speed to rated rotation speed switch state judging unit is used for judging whether the idle speed to rated rotation speed switch is activated or not;
a control curve judging unit for judging whether the throttle-rotation speed control curve is abnormal;
and the determining unit is used for determining that the engine speed does not rise suddenly when the accelerator opening is equal to zero, the idle speed to rated speed switch is not activated and the accelerator-speed control curve is normal.
In the engine protection device provided in this embodiment, the request for starting the engine is acquired by the request acquisition module 310; the first parameter obtaining module 320 is configured to obtain an engine starting parameter; determining, by the determination module 330, that the engine speed is not to be ramped based on the engine start parameter; acquiring fuel injection enabling parameters of each cylinder of the engine through a second parameter acquisition module 340; evaluating, by the evaluation module 350, whether each cylinder of the engine is fuel injection enabled based on the fuel injection enabling parameters; when each cylinder is fuel injection enabled, engine starting is allowed through the output module 360. The method can effectively avoid sudden rise of the rotating speed and/or surge of the supercharger after the engine is started and caused by error calibration of the ECU data or temporary modification and forgetting recovery of the ECU data, thereby protecting the engine and preventing accidents.
Example IV
The present embodiment provides a vehicle including an engine, a drive controller, a memory, and an instrument panel. The engine, the driving controller, the memory and the instrument panel can be connected through a bus, and the instrument panel is used for displaying alarm information.
The memory is used as a computer readable storage medium for storing software programs, computer executable programs and modules, such as program instructions/modules corresponding to the engine protection method in the embodiments of the present invention. The driving controller executes various functional applications and data processing of the vehicle by running software programs, instructions and modules stored in the memory, that is, implements the engine protection method of the above embodiment.
The memory mainly comprises a memory program area and a memory data area, wherein the memory program area can store an operating system and at least one application program required by functions; the storage data area may store data created according to the use of the terminal, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the memory may further include memory remotely located with respect to the ride control, and the remote memory may be connected to the vehicle via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The vehicle provided in the fourth embodiment of the present invention belongs to the same inventive concept as the engine protection method provided in the above embodiment, and technical details not described in detail in the present embodiment can be seen in the above embodiment, and the present embodiment has the same advantages as executing the engine protection method.
Example five
A fifth embodiment of the present invention also provides a storage medium having a computer program stored thereon, which when executed by a driving controller implements the engine protection method according to the above embodiment of the present invention.
Of course, the storage medium containing the computer executable instructions provided by the embodiment of the invention is not limited to the operations in the engine protection method described above, but can also execute the related operations in the engine protection device provided by the embodiment of the invention, and has corresponding functions and beneficial effects.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a robot, a personal computer, a server, or a network device, etc.) to execute the engine protection method according to the embodiments of the present invention.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. An engine protection method, comprising:
acquiring an engine starting request;
acquiring an engine starting parameter, and determining that the engine rotating speed cannot rise based on the engine starting parameter, wherein the engine starting parameter comprises an accelerator opening degree, an idling to rated rotating speed switch state and an accelerator-rotating speed control curve;
acquiring fuel injection enabling parameters of each cylinder of an engine;
evaluating whether each cylinder of the engine is fuel injection enabled or not based on the fuel injection enabling parameters;
and if the fuel injection of each cylinder is enabled, the engine is allowed to start.
2. The engine protection method of claim 1, wherein engine start is not allowed if no cylinder is fuel injected enabled.
3. The engine protection method of claim 1, wherein the first warning message is output if any cylinder is not fuel injected enabled.
4. The engine protection method of claim 1, wherein determining that engine speed does not rise based on the engine start parameter comprises:
judging whether the opening of the accelerator is zero, judging whether an idling-to-rated rotation speed switch is activated, and judging whether an accelerator-rotation speed control curve is abnormal;
when the throttle opening is equal to zero, the idle speed to rated rotation speed switch is not activated, and the throttle-rotation speed control curve is normal, the rotation speed of the engine is determined not to be suddenly increased.
5. The engine protection method according to claim 4, characterized in that when the accelerator opening is not equal to zero, a second warning message is output and engine start is not allowed.
6. The engine protection method according to claim 4, wherein when the idle-to-rated speed switch is activated, a third warning message is output and engine start is not allowed.
7. The engine protection method according to claim 4, characterized in that when the accelerator-rotation speed control curve is abnormal, a fourth warning message is output and engine start is not allowed.
8. An engine protection device, comprising:
the request acquisition module is used for acquiring an engine starting request;
the first parameter acquisition module is used for acquiring engine starting parameters;
a determining module for determining that an engine speed does not rise suddenly based on the engine start parameter;
the second parameter acquisition module is used for acquiring fuel injection enabling parameters of each cylinder of the engine;
the evaluation module is used for evaluating whether each cylinder of the engine is enabled by oil injection or not based on the oil injection enabling parameters;
and the output module is used for allowing the engine to start when the fuel injection of each cylinder is enabled.
9. The engine protection device of claim 8, wherein the determination module comprises:
the accelerator opening judging unit is used for judging whether the accelerator opening is zero or not;
the idle speed to rated rotation speed switch state judging unit is used for judging whether the idle speed to rated rotation speed switch is activated or not;
a control curve judging unit for judging whether the throttle-rotation speed control curve is abnormal;
and the determining unit is used for determining that the engine speed does not rise suddenly when the accelerator opening is equal to zero, the idle speed to rated speed switch is not activated and the accelerator-speed control curve is normal.
10. A storage medium having stored thereon a computer program which, when executed by a vehicle controller, implements the engine protection method according to any one of claims 1-7.
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