CN-121993299-A - Engine control method, control device, equipment and storage medium

CN121993299ACN 121993299 ACN121993299 ACN 121993299ACN-121993299-A

Abstract

The application discloses a control method, a control device, equipment and a storage medium of an engine, and belongs to the technical field of vehicle control. The method comprises the steps of obtaining a first characteristic signal, obtaining a first phase angle under the condition that the first characteristic signal does not meet a first specified condition, obtaining a second phase angle under the condition that the first characteristic signal meets the first specified condition, and controlling an engine according to a steady-state phase angle or a dynamic phase angle, wherein the first phase angle and the second phase angle are different. The application can ensure that the engine can keep the optimal running state under different working conditions through differentiated phase control based on driving intention.

Inventors

JIN HUI
XU FEI
WANG YONGSHENG

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (10)

1. A control method of an engine, characterized by comprising: acquiring a first characteristic signal, wherein the first characteristic signal indicates a first driving intention of a user on a vehicle; Acquiring a first phase angle, which is a steady-state phase angle corresponding to a first rotational speed and a first load of an engine in the vehicle among the different steady-state phase angles for changing an opening and/or closing timing of an intake valve of the engine, when the first characteristic signal does not satisfy a first specified condition; acquiring a second phase angle, which is a dynamic phase angle corresponding to the first rotation speed and the first load among the different dynamic phase angles, when the first characteristic signal meets a first specified condition, wherein the different dynamic phase angles are used for changing the opening and/or closing timing of the intake valve; the engine is controlled according to the first phase angle or the second phase angle, the first phase angle and the second phase angle being different.
2. The method of claim 1, wherein the first characteristic signal is divided into a first enable class signal and a first demand intensity class signal, the first enable class signal indicating whether an operational state of the vehicle allows execution of a driving operation corresponding to the first driving intent, the first demand intensity class signal indicating a demand intensity of the first driving intent, the method further comprising: And determining whether the first characteristic signal meets the first specified condition according to the enabling state of the first enabling signal and the first required strength signal.
3. The method of claim 2, wherein the first demand strength class signal is a plurality, and wherein determining whether the first characteristic signal satisfies the first specified condition based on the enable state of the first enable class signal and the first demand strength class signal comprises: acquiring a plurality of index values corresponding to a plurality of first demand intensity class signals one by one when the enabling state of the first enabling class signals is enabled, wherein the plurality of index values are used for indicating the credibility of the first driving intention indicated by the first characteristic signals, and the enabling state is enabled to effectively indicate that the running state of the vehicle allows the driving operation corresponding to the first driving intention to be executed; weighting and fusing the index values according to the weight coefficients of the first demand intensity signals; and if the fusion index value obtained after weighted fusion is greater than a first threshold value, the first characteristic signal meets the first specified condition.
4. The method according to claim 1, wherein the method further comprises: acquiring a second characteristic signal indicating disappearance of the first driving intention in a case where the engine is controlled according to the dynamic phase angle; Acquiring a third phase angle when the second characteristic signal meets a second specified condition, wherein the third phase angle is a steady-state phase angle corresponding to a second rotating speed and a second load of the engine in the different steady-state phase angles; and controlling the engine according to the third phase angle.
5. The method of claim 4, wherein the second characteristic signal includes a second enable class signal indicating whether the running state of the vehicle allows the corresponding driving operation of the first driving intent to be canceled, and a second demand intensity class signal indicating a demand intensity for canceling the first driving intent, the method further comprising: And determining whether the second characteristic signal meets the first specified condition according to the enabling state of the second enabling signal and the second required strength signal.
6. The method of any of claims 1-5, wherein the operating modes of the engine include a first operating mode operating according to the different steady state phase angles, the operating modes of the engine further including a second operating mode operating according to the different dynamic phase angles, the method further comprising: and when the working mode of the engine is switched between the first working mode and the second working mode, switching the working mode of the engine according to a specified change rate, wherein the specified change rate indicates the change rate of a phase angle of the working mode of the engine in the switching process.
7. The method of claim 6, wherein the method further comprises: and if the change rate of the phase angle in the working mode switching process of the engine reaches a second threshold value, limiting the change rate of the phase angle in the working mode switching process of the engine.
8. A control device of an engine, characterized in that the device comprises an acquisition module and an execution module; The acquisition module is configured to acquire a first characteristic signal indicating a first driving intention of a user for a vehicle; the acquisition module is further configured to acquire a first phase angle, which is a steady-state phase angle corresponding to a first rotational speed and a first load of an engine in the vehicle among the different steady-state phase angles for changing an opening and/or closing timing of an intake valve of the engine, in a case where the first characteristic signal does not satisfy a first specified condition; The acquisition module is further configured to acquire a second phase angle, which is a dynamic phase angle corresponding to the first rotation speed and the first load among the different dynamic phase angles, when the first characteristic signal meets a first specified condition, the different dynamic phase angles being used for changing the opening and/or closing timing of the intake valve; The execution module is configured to control the engine according to the first phase angle or the second phase angle, the first phase angle and the second phase angle being different.
9. An electronic device, comprising: A memory having stored thereon program instructions for controlling the engine, and A processor which, when executed by the processor, causes the vehicle to implement the control method of any one of claims 1-7.
10. A computer readable storage medium having stored thereon program instructions for controlling an engine, which when executed by one or more processors, cause a vehicle to implement the control method of any of claims 1-7.

Description

Engine control method, control device, equipment and storage medium Technical Field The present application relates to the field of vehicle control technologies, and in particular, to a control method, a control device, a device, and a storage medium for an engine. Background With the increasing strictness of automobile energy conservation and emission regulations, the improvement of the thermal efficiency and the optimization of the fuel consumption of an engine become the development direction of industrial core technology, and the traditional engine for realizing power output by adopting the otto cycle has the potential of improving the thermal efficiency close to the bottleneck, so that the continuous tightening of the fuel consumption and the emission requirements are difficult to adapt. In order to meet the energy-saving and emission indexes, in the related technology, a technical route of adopting a Miller circulation technology and a high compression ratio to improve the thermal efficiency of an engine is adopted, so that the method has become an important technical means for reducing the oil consumption of the engine and reducing the emission of the whole vehicle, and the operation characteristic that the expansion ratio is larger than the compression ratio is realized by adjusting the gas distribution phase of the engine so as to improve the thermal efficiency of the engine. However, the miller cycle technology adjusts the valve timing of the engine, so that the intake valve of the engine is closed in a delayed manner in the compression stroke, the engine torque rises slowly, the transient acceleration response is insufficient, the power performance of the whole vehicle is limited, and the problem that the power performance and the energy-saving requirement are difficult to cooperate and consider exists. Disclosure of Invention The application provides a control method, a control device, equipment and a storage medium of an engine, which are used for solving the technical problems in the related art. The method comprises the following technical scheme: In a first aspect, the application provides a control method of an engine, the method comprising the steps of obtaining a first characteristic signal, wherein the first characteristic signal indicates a first driving intention of a user on a vehicle, obtaining a first phase angle in the case that the first characteristic signal does not meet a first specified condition, wherein the first phase angle is a steady-state phase angle corresponding to a first rotating speed and a first load of the engine in the vehicle in different steady-state phase angles, wherein the different steady-state phase angles are used for changing the opening and/or closing timing of the intake valve of the engine, and obtaining a second phase angle in the case that the first characteristic signal meets the first specified condition, wherein the second phase angle is a dynamic phase angle corresponding to the first rotating speed and the first load in the different dynamic phase angles, wherein the different dynamic phase angles are used for changing the opening and/or closing timing of the intake valve, and wherein the first phase angle and the second phase angle are different according to the first phase angle or the second phase angle. In some possible embodiments, the first characteristic signal is divided into a first enabling signal and a first demand intensity signal, the first enabling signal indicating whether the running state of the vehicle allows the execution of the driving operation corresponding to the first driving intention, the first demand intensity signal indicating the demand intensity of the first driving intention, and the method further includes determining whether the first characteristic signal meets the first specified condition according to the enabling state of the first enabling signal and the first demand intensity signal. In some possible embodiments, the determining whether the first characteristic signal meets the first specified condition according to the enabling state of the first enabling signal and the first requirement strength signal includes obtaining a plurality of index values corresponding to the first requirement strength signals one to one, where the plurality of index values are used to indicate the credibility of the first driving intention indicated by the first characteristic signal, the enabling state effectively indicates that the running state of the vehicle allows the driving operation corresponding to the first driving intention, weighting and fusing the plurality of index values according to the weighting coefficients of the first requirement strength signal, and if the weighted and fused fusion index value is greater than a first threshold, the first characteristic signal meets the first specified condition. In some possible embodiments, the method further comprises acquiring a second characteristic signal indicating t