CN109252970B - Engine rotating speed control method, engine and vehicle - Google Patents
Engine rotating speed control method, engine and vehicle Download PDFInfo
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- CN109252970B CN109252970B CN201811088736.3A CN201811088736A CN109252970B CN 109252970 B CN109252970 B CN 109252970B CN 201811088736 A CN201811088736 A CN 201811088736A CN 109252970 B CN109252970 B CN 109252970B
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
- F02D41/3005—Details not otherwise provided for
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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
- F02D2200/1002—Output torque
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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
Abstract
The invention discloses an engine rotating speed control method, an engine and a vehicle. The engine speed control method includes: acquiring the working mode of an engine; determining a required rotation speed of the engine according to the working mode; determining a rotation speed correction coefficient of the engine according to the required rotation speed; determining the corrected rotating speed of the engine according to the current torque and the current rotating speed of the engine and the rotating speed correction coefficient; and determining the output rotating speed of the engine according to the current torque, the required rotating speed and the corrected rotating speed. According to the engine rotating speed control method provided by the embodiment of the invention, the corrected rotating speed of the engine is determined by utilizing the rotating speed correction coefficient, the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected to be the output rotating speed by utilizing the corrected rotating speed in the process that the torque of the engine needs to be increased and the rotating speed needs to be increased, so that the effect of saving the oil consumption of the engine can be achieved.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicle engines, in particular to an engine speed control method, an engine and a vehicle.
Background
When the engineering machinery finished automobile works, the engine is required to maintain a constant rotating speed. Generally, a Controller of a whole vehicle outputs a target rotating speed to an electronic control unit of an engine through a Controller Area Network (CAN) bus, and the electronic control unit CAN control the rotating speed of the engine to be close to the target rotating speed without a driver to adjust an accelerator at any time, so that the labor intensity of the driver is reduced.
When the engine of the vehicle is adjusted from a first working mode with lower rotating speed to a second working mode with higher rotating speed, or when the load of the vehicle is suddenly increased, the target rotating speed output by the controller local area network bus is also increased, and at the moment, the electronic control unit needs to gradually increase the engine of the vehicle from the initial rotating speed with lower rotating speed to the vicinity of a new target rotating speed by increasing the fuel injection rate of the accelerator of the engine.
Because the new target rotating speed is different from the initial rotating speed of the engine to a certain extent, in the process of increasing the rotating speed of the engine, the electronic control unit needs to control the accelerator of the engine to spray a large amount of oil so as to achieve the purpose of increasing the rotating speed of the engine. During the entire increase in the engine speed, the injection rate of the throttle is significantly greater than the injection rate of the engine when operating at a steady speed, which tends to lead to a considerable increase in fuel consumption.
Disclosure of Invention
The invention provides an engine rotating speed control method, an engine and a vehicle, which aim to reduce oil consumption of the engine.
In a first aspect, an embodiment of the present invention provides an engine speed control method, including:
acquiring the working mode of an engine;
determining a required rotation speed of the engine according to the working mode;
determining a rotation speed correction coefficient of the engine according to the required rotation speed;
determining the corrected rotating speed of the engine according to the current torque and the current rotating speed of the engine and the rotating speed correction coefficient;
and determining the output rotating speed of the engine according to the current torque, the required rotating speed and the corrected rotating speed.
Further, the determining a corrected rotation speed of the engine according to the current torque and the current rotation speed of the engine and the rotation speed correction coefficient includes:
determining a torque correction value according to the current rotating speed and the current torque;
calculating a product result of the torque correction value and the rotation speed correction coefficient;
comparing the product result with a preset value, and taking the product result as the corrected rotating speed when the product result is greater than or equal to the preset value; and when the product result is smaller than the preset value, taking the preset value as the correction rotating speed.
Further, the determining a torque correction value according to the current rotation speed and the current torque includes:
acquiring the current rotating speed of the engine;
according to a first corresponding relation between the rotating speed and the torque, obtaining a feedback torque corresponding to the current rotating speed;
and acquiring the current torque of the engine, and determining a torque correction value according to the current torque and the feedback torque.
Further, determining a torque correction value based on the current torque and the feedback torque includes:
and taking the difference value of the current torque and the feedback torque as the torque correction value.
Further, the determining an output rotation speed of the engine based on the current torque, the required rotation speed, and the corrected rotation speed includes:
acquiring the current torque of the engine;
comparing the current torque with a torque calibration value, and when the current torque is larger than the torque calibration value, taking the difference value between the required rotating speed and the corrected rotating speed as the output rotating speed of the engine; and when the current torque is less than or equal to the torque calibration value, taking the required rotating speed as the output rotating speed of the engine.
Further, determining a rotation speed correction coefficient of the engine according to the required rotation speed includes:
acquiring a second corresponding relation between the required rotating speed and the rotating speed correction coefficient;
and determining a rotating speed correction coefficient of the engine according to the second corresponding relation and the required rotating speed.
Further, the determining the required rotation speed of the engine according to the operation mode includes:
acquiring a third corresponding relation between the working mode and the required rotating speed;
and determining the required rotating speed of the engine according to the third corresponding relation and the working mode.
Further, the obtaining of the working mode of the engine comprises:
receiving a working mode signal;
an operating mode of the engine is determined based on the operating mode signal.
In a second aspect, an embodiment of the present invention further provides an engine, including a memory, a processor, and a computer program stored on the memory and executed by the processor, where the processor implements the engine speed control method according to any one of the above first aspects when executing the computer program.
In a third aspect, an embodiment of the present invention further provides a vehicle, which is characterized by including the engine according to the second aspect.
According to the engine rotating speed control method provided by the embodiment of the invention, the corrected rotating speed of the engine is determined by utilizing the rotating speed correction coefficient, the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected to be the output rotating speed by utilizing the corrected rotating speed in the process that the torque of the engine needs to be increased and the rotating speed needs to be increased, so that the effect of saving the oil consumption of the engine can be achieved.
Drawings
FIG. 1 is a flow chart of an engine speed control method provided by an embodiment of the present invention;
FIG. 2 is a flow chart for determining a corrected engine speed provided by an embodiment of the present invention;
FIG. 3 is a flowchart of determining a torque correction value for an engine provided by an embodiment of the present invention;
FIG. 4 is a flow chart for determining engine output speed provided by an embodiment of the present invention;
FIG. 5 is a flow chart of determining a speed correction factor for an engine provided by an embodiment of the present invention;
FIG. 6 is a flowchart of determining a requested rotational speed of the engine provided by the embodiment of the invention;
FIG. 7 is a flow chart for determining an operating mode of an engine provided by an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a flowchart of an engine speed control method according to an embodiment of the present invention. Specifically, referring to fig. 1, the engine speed control method includes:
and step 10, acquiring the working mode of the engine.
Generally, each engine at least comprises two or more working modes, the different working modes correspond to different working states of the engine, and in the process of controlling the rotating speed of the engine by using the improved rotating speed control method of the embodiment, the working mode of the engine needs to be determined firstly, the rotating speed of the engine needs to be controlled according to the working mode of the engine, and other factors influencing the rotating speed of the engine are comprehensively considered. The operating mode of the engine is generally determined by the driver, who may control or switch the operating state of the engine, for example, by operating a hydraulic controller.
And step 20, determining the required rotating speed of the engine according to the working mode.
Specifically, each operating mode corresponds to a certain engine speed at which the engine operates when the engine is in a steady operating state. The stable operating state referred to herein is understood to mean that there is no sudden change in the load of the engine, nor is there any change in the operating mode of the engine.
And step 30, determining a rotating speed correction coefficient of the engine according to the required rotating speed.
Specifically, each operating mode corresponds to a required rotation speed, and each required rotation speed corresponds to a rotation speed correction coefficient. The rotation speed correction coefficient is used to obtain a correction rotation speed, when the required rotation speed output by the engine is different, the corresponding rotation speed correction coefficients are different, and a correction rotation speed matched with the current working mode of the engine can be obtained by using the rotation speed correction coefficient, and a specific method for obtaining the correction rotation speed will be described in the following embodiments.
And step 40, determining the corrected rotating speed of the engine according to the current torque and the current rotating speed of the engine and the rotating speed correction coefficient.
Specifically, when acquiring the corrected rotating speed of the engine, the working mode of the engine needs to be considered, and the working mode of the engine is reflected by using a rotating speed correction coefficient; in obtaining the corrected rotational speed of the engine, it is also necessary to consider the current actual operating conditions of the engine, i.e., the current torque and the current rotational speed of the engine. Wherein, the current torque and the current rotating speed are related to the working mode of the engine and the load. For example, under the condition that the working mode is not changed, the load of the engine is suddenly increased, which can cause the current torque of the engine to be increased, and the current rotating speed of the engine is suddenly reduced because the output power of the engine is kept unchanged, and the current torque of the engine needs to be increased in order to recover the rotating speed; or, when the load of the engine is not changed, and the operation mode of the engine is suddenly adjusted from the operation mode with the lower rotation speed to the operation mode with the higher rotation speed, at this time, the current rotation speed of the engine is still unchanged, and in order to increase the rotation speed, the current torque of the engine needs to be increased. When determining the corrected rotating speed of the engine, the current operating condition of the engine needs to be determined according to the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected in a targeted manner by combining a rotating speed correction coefficient.
And step 50, determining the output rotating speed of the engine according to the current torque, the required rotating speed and the corrected rotating speed.
For example, in the case where the operation mode of the engine is not changed, if the amount of increase in the load is a certain value, the corresponding amount of decrease in the rotation speed of the engine is also a certain value. It can be understood that the value of the demanded speed of the engine is greater than the output speed, and the value of the output speed is greater than the current speed of the engine. If the required rotating speed of the engine is directly taken as a target, the current rotating speed is directly adjusted according to the required rotating speed of the engine, the difference value between the required rotating speed and the current rotating speed is relatively large, the work required by the engine is large, the oil injection rate of the engine is also large, and the oil consumption is large. If the output rotating speed is taken as the target, the current rotating speed of the engine is adjusted according to the output rotating speed, because the difference value between the output rotating speed and the current rotating speed is relatively small, the work required by the engine is relatively small, the oil injection rate of the engine is relatively small, and the oil consumption is small. Therefore, it can be understood that in the process of recovering the current lower rotating speed of the engine to the higher required speed, the speed of the engine is adjusted according to the lower output rotating speed by setting the correction rotating speed, so that the purpose of saving oil can be achieved. Similarly, if the engine is suddenly switched from the working mode with a low rotation speed to the working mode with a high rotation speed under the condition of unchanged load, the required rotation speed can be temporarily adjusted to the output speed by using the corrected rotation speed, so that the engine firstly performs speed adjustment according to the output rotation speed, and the purpose of saving oil can be achieved.
It is understood that the output rotation speed in the present embodiment depends on the required rotation speed and the correction rotation speed, which is related to the current torque of the engine, the current rotation speed, and the rotation speed correction coefficient; after the working mode of the engine is determined, the required rotating speed and the rotating speed correction coefficient are constant values, but as the current torque of the engine is increased, the current rotating speed of the engine is gradually increased along with time, so that the output rotating speed determined by the required rotating speed and the corrected rotating speed is also gradually increased, and finally the current rotating speed, the output rotating speed and the required rotating speed reach the same level. Therefore, the rotating speed correction method provided by the embodiment can control the current rotating speed of the engine to gradually increase according to the output rotating speed under the condition that the rotating speed of the engine needs to be increased, so that the output rotating speed is gradually increased to the required rotating speed, and finally, the purpose of saving oil is achieved while the current rotating speed of the engine is controlled to be restored to the required rotating speed.
Specifically, after the required rotation speed and the corrected rotation speed are obtained, it is necessary to determine whether the required rotation speed of the engine needs to be corrected based on the current torque, taking into account the current torque of the engine. It can be understood that if the current torque of the engine is large, which indicates that the engine is actually increasing the current rotation speed by increasing the torque, only in this case, the required rotation speed needs to be corrected so that the required rotation speed temporarily follows the output rotation speed; if the current torque of the engine is not large, even if the current torque tends to become small, it indicates that the engine does not have a need to increase the current speed by increasing the torque. For example, if the working mode of the engine is not changed, the load of the engine is suddenly reduced, the rotating speed of the engine is increased instantly, and the rotating speed of the engine is required to be reduced by reducing the current torque during the subsequent operation of the engine; or when the engine is switched from a higher-speed operation mode to a lower-speed operation mode under the condition of constant load, the current torque is reduced to reduce the speed of the engine. During the process of reducing the torque of the engine, the fuel injection rate of the engine is reduced, so that additional fuel consumption is not increased, and the required rotating speed does not need to be corrected by the corrected rotating speed.
According to the engine rotating speed control method provided by the embodiment of the invention, the corrected rotating speed of the engine is determined by utilizing the rotating speed correction coefficient, the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected to be the output rotating speed by utilizing the corrected rotating speed in the process that the torque of the engine needs to be increased and the rotating speed needs to be increased, so that the effect of saving the oil consumption of the engine can be achieved.
FIG. 2 is a flow chart for determining a corrected engine speed provided by an embodiment of the present invention. Alternatively, referring to fig. 1 and 2, step 40, determining a corrected engine speed according to the current torque and the current engine speed of the engine and the speed correction factor includes:
and step 41, determining a torque correction value according to the current rotating speed and the current torque.
Specifically, the torque correction value is used to determine a correction rotational speed, which is related to the current rotational speed and the current torque of the engine, and therefore, a specific determination method thereof will be described in the following embodiments, according to the need to consider the current rotational speed and the current torque of the engine when determining the torque correction value. The torque correction value obtained here may be positive or negative.
And 42, calculating a product result of the torque correction value and the rotating speed correction coefficient.
The rotation speed correction coefficient corresponds to a coefficient parameter and may be set to a positive value in general, and therefore, the result of multiplying the torque correction value by the rotation speed correction coefficient may be positive or negative.
Alternatively, the preset value may be 0, and generally, if the multiplication result is greater than 0, it indicates that the engine needs to correct the rotation speed to correct the required rotation speed, and the multiplication result may be used as the corrected rotation speed; if the multiplication result is less than 0, the engine is indicated to temporarily not need to correct the rotating speed to correct the required rotating speed, and 0 is taken as the corrected rotating speed.
FIG. 3 is a flow chart of determining a torque correction value for an engine provided by an embodiment of the present invention. Alternatively, referring to fig. 2 and 3, step 41, determining a torque correction value according to the current rotation speed and the current torque includes:
and step 411, acquiring the current rotating speed of the engine.
Alternatively, the electronic control unit may obtain the current rotating speed of the engine in real time according to the rotating speed information collected by the rotating speed sensor.
And step 412, obtaining a feedback torque corresponding to the current rotating speed according to the first corresponding relation between the rotating speed and the torque.
Specifically, the engine corresponds to a feedback torque value at any rotation speed. The first correspondence relationship may include an arbitrary rotation speed of the engine, and a feedback torque corresponding to the arbitrary rotation speed; wherein any rotational speed is less than or equal to the maximum rotational speed of the engine. After the current rotation speed of the engine is obtained in step 411, the feedback torque corresponding to the current rotation speed can be obtained according to the current rotation speed.
And 413, acquiring the current torque of the engine, and determining a torque correction value according to the current torque and the feedback torque.
Specifically, the current torque of the engine can be acquired in real time according to the rotating speed information acquired by the torque sensor. Since the torque correction value is related to the current torque and the feedback torque of the engine, the torque correction value can be determined after the current torque and the feedback torque are acquired.
Optionally, determining a torque correction value according to the current torque and the feedback torque comprises: and taking the difference value of the current torque and the feedback torque as a torque correction value. Specifically, the feedback torque reflects the current rotating speed of the engine, and if the current rotating speed of the engine is smaller than the required rotating speed, the current torque value of the engine needs to be increased, so that the current rotating speed is increased, at the moment, the current torque of the engine is often larger than the feedback torque, and the current required torque correction value of the engine can be determined through the difference value between the current torque and the feedback torque. Similarly, if the current rotating speed of the engine is greater than or equal to the required rotating speed, the engine does not need to increase the current rotating speed and does not need to increase the current torque value, at the moment, the current torque of the engine is often less than or equal to the feedback torque, and the current required torque correction value of the engine can be determined through the difference value between the current torque and the feedback torque.
Fig. 4 is a flowchart of determining an output rotational speed of an engine according to an embodiment of the present invention. Alternatively, referring to fig. 1 and 4, step 50, determining an output speed of the engine based on the current torque, the requested speed, and the corrected speed includes:
and step 51, acquiring the current torque of the engine.
Alternatively, the current torque of the engine may be obtained by a method similar or identical to that of the previous embodiment, and will not be described in detail.
When the current torque is larger than the torque calibration value, the current rotating speed of the engine is smaller than the required rotating speed, the current torque of the engine needs to be increased, the current rotating speed is further increased, in order to save oil consumption, the required rotating speed needs to be corrected by using the corrected rotating speed, and the output rotating speed lower than the required rotating speed is used as an adjustment target to control the engine to increase the rotating speed. When the current torque is smaller than the torque calibration value, the current rotating speed of the engine is larger than or equal to the required rotating speed, the current rotating speed of the engine does not need to be increased, the current torque value does not need to be increased, at the moment, the required rotating speed does not need to be corrected, and therefore the required rotating speed can be directly used as the output rotating speed.
Fig. 5 is a flowchart of determining a speed correction factor for an engine according to an embodiment of the present invention. Alternatively, referring to fig. 1 and 5, step 30, determining a speed correction factor of the engine according to the demanded speed includes:
and 31, acquiring a second corresponding relation between the required rotating speed and the rotating speed correction coefficient.
Specifically, a one-to-one correspondence relationship exists between the required rotation speed and the rotation speed correction coefficient, and each required rotation speed corresponds to a unique rotation speed correction coefficient. The second corresponding relation comprises any required rotating speed of the engine and a rotating speed correction coefficient corresponding to the any required rotating speed.
And step 32, determining a rotating speed correction coefficient of the engine according to the second corresponding relation and the required rotating speed.
Specifically, since the required rotation speed corresponds to the rotation speed correction coefficient one to one, after the second correspondence is obtained, the rotation speed correction coefficient can be determined by using the second correspondence according to the required rotation speed of the engine.
Fig. 6 is a flowchart of determining a required rotation speed of the engine according to the embodiment of the invention. Alternatively, referring to fig. 1 and 6, step 20, said determining a demanded speed of said engine according to said operation mode includes:
and step 21, acquiring a third corresponding relation between the working mode and the required rotating speed.
Specifically, a one-to-one third corresponding relationship exists between the working mode and the required rotating speed number, and each required rotating speed corresponds to a unique rotating speed correction coefficient. The third correspondence relationship includes any operation mode of the engine and a required rotation speed corresponding to the any operation mode.
And step 22, determining the required rotating speed of the engine according to the third corresponding relation and the working mode.
Specifically, since the operating mode corresponds to the required rotation speed one to one, after the third correspondence is obtained, the required rotation speed can be determined using the second correspondence according to the operating mode of the engine.
FIG. 7 is a flow chart for determining an operating mode of an engine provided by an embodiment of the present invention. Alternatively, referring to fig. 1 and 7, step 10, the obtaining the operating mode of the engine includes:
and step 11, receiving a working mode signal.
And step 12, determining the working mode of the engine according to the working mode signal.
Specifically, the operating mode signal of the engine may be generated by the driver by operating a hydraulic controller or the like, and transmitted to the electronic control unit through the controller area network bus, and the electronic control unit controls the engine to operate according to the received operating mode signal. In order to enable the electronic control unit to recognize the operation mode signal, it is necessary to convert the operation of the hydraulic controller by the driver into the operation mode signal that the electronic control unit CAN recognize before the operation mode is transmitted using the CAN bus.
Based on the same inventive concept, the present embodiment further provides an engine, which includes a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the processor implements the engine speed control method according to any of the above embodiments when executing the computer program.
According to the engine provided by the embodiment, the correction rotating speed of the engine is determined by using the rotating speed correction coefficient, the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected to be the output rotating speed by using the correction rotating speed in the process that the torque of the engine needs to be increased and the rotating speed needs to be increased, so that the effect of saving the oil consumption of the engine can be achieved.
Based on the same inventive concept, the present embodiment also provides a vehicle including the engine according to any of the above embodiments.
According to the vehicle provided by the embodiment, the correction rotating speed of the engine is determined by using the rotating speed correction coefficient, the current torque and the current rotating speed of the engine, and the required rotating speed of the engine is corrected to be the output rotating speed by using the correction rotating speed in the process that the torque of the engine needs to be increased and the rotating speed needs to be increased, so that the effect of saving the oil consumption of the engine can be achieved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An engine speed control method characterized by comprising:
acquiring the working mode of an engine;
determining a required rotation speed of the engine according to the working mode;
determining a rotation speed correction coefficient of the engine according to the required rotation speed;
determining the corrected rotating speed of the engine according to the current torque and the current rotating speed of the engine and the rotating speed correction coefficient;
and determining the output rotating speed of the engine according to the current torque, the required rotating speed and the corrected rotating speed.
2. The engine speed control method according to claim 1, wherein the determining a corrected speed of the engine based on the current torque and the current speed of the engine and the speed correction coefficient includes:
determining a torque correction value according to the current rotating speed and the current torque;
calculating a product result of the torque correction value and the rotation speed correction coefficient;
comparing the product result with a preset value, and taking the product result as the corrected rotating speed when the product result is greater than or equal to the preset value; and when the product result is smaller than the preset value, taking the preset value as the correction rotating speed.
3. The engine speed control method according to claim 2, wherein the determining a torque correction value based on the current speed and the current torque includes:
acquiring the current rotating speed of the engine;
according to a first corresponding relation between the current rotating speed and the feedback torque, obtaining the feedback torque corresponding to the current rotating speed;
and acquiring the current torque of the engine, and determining a torque correction value according to the current torque and the feedback torque.
4. The engine speed control method according to claim 3, wherein determining a torque correction value based on the current torque and the feedback torque comprises:
and taking the difference value of the current torque and the feedback torque as the torque correction value.
5. The engine speed control method according to claim 1, wherein the determining an output speed of the engine from the current torque, the required speed, and the corrected speed includes:
acquiring the current torque of the engine;
comparing the current torque with a torque calibration value, and when the current torque is larger than the torque calibration value, taking the difference value between the required rotating speed and the corrected rotating speed as the output rotating speed of the engine; and when the current torque is less than or equal to the torque calibration value, taking the required rotating speed as the output rotating speed of the engine.
6. The engine speed control method according to claim 1, wherein determining a speed correction coefficient of the engine in accordance with the required speed includes:
acquiring a second corresponding relation between the required rotating speed and the rotating speed correction coefficient;
and determining a rotating speed correction coefficient of the engine according to the second corresponding relation and the required rotating speed.
7. The engine speed control method according to claim 1, wherein the determining the required speed of the engine according to the operation mode includes:
acquiring a third corresponding relation between the working mode and the required rotating speed;
and determining the required rotating speed of the engine according to the third corresponding relation and the working mode.
8. The engine speed control method according to claim 1, wherein the obtaining of the operating mode of the engine includes:
receiving a working mode signal;
an operating mode of the engine is determined based on the operating mode signal.
9. An engine comprising a memory, a processor and a computer program stored on the memory and run on the processor, the processor implementing the engine speed control method according to any one of claims 1 to 8 when executing the computer program.
10. A vehicle characterized by comprising the engine of claim 9.
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| CN110985220B (en) * | 2019-12-16 | 2022-09-23 | 潍柴动力股份有限公司 | Engine speed control method, device, equipment and storage medium |
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