CN-121993333-A - Ignition advance angle determining method and device and related equipment

CN121993333ACN 121993333 ACN121993333 ACN 121993333ACN-121993333-A

Abstract

The application provides a method and a device for determining an ignition advance angle and related equipment. When the ignition advance angle of the engine needs to be determined, the actual working condition parameters of the engine can be acquired first, the predicted ignition advance angle is obtained through a prediction model based on the actual working condition parameters, and then the engine operation is controlled based on the predicted ignition advance angle. The first feedback parameter may also be determined based on the predicted spark advance after controlling engine operation, and the predictive model may be updated based on the first feedback parameter. The first feedback parameter identifies a difference between the predicted spark advance and an actual optimal spark advance of the engine. In this way, the prediction model is corrected based on the actual working condition of the engine while predicting the ignition advance angle of the engine based on the working condition parameters through the prediction model, so that the prediction model is suitable for the actual working condition of the engine. Therefore, the proper ignition advance angle can be accurately predicted according to the actual condition of the engine, and the engine can be better controlled.

Inventors

YI LIN
SUN SIYAN
XUE XIAOBING

Assignees

上海汽车集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (10)

1. A method of determining an ignition advance angle, the method comprising: Acquiring actual working condition parameters of an engine; Based on the actual working condition parameters, a predicted ignition advance angle is predicted through a prediction model; Controlling the engine operation based on the predicted spark advance; Determining a first feedback parameter according to the predicted ignition advance angle, wherein the first feedback parameter represents the difference between the predicted ignition advance angle and the actual optimal ignition advance angle of the engine; updating the predictive model based on the first feedback parameter.
2. The method of claim 1, wherein said determining a feedback parameter based on said first point advance angle comprises: acquiring a torque increment of the engine in response to knocking of the engine in the process of controlling the engine to operate based on the predicted ignition advance angle; And determining a preset angle error as the first feedback parameter in response to the torque increment meeting a preset condition.
3. The method of claim 1 or 2, wherein predicting, based on the actual operating condition parameter, a predicted spark advance variable via a prediction model comprises: Acquiring n historical working condition parameters, wherein n is a positive integer; Inputting the prediction model according to the n historical working conditions and the actual working condition parameters; And obtaining an output result of the prediction model, wherein the output result comprises the predicted ignition advance angle and n reference ignition advance angles, and each reference ignition advance angle corresponds to one historical working condition parameter.
4. The method of claim 3, wherein updating the predictive model based on the first feedback parameter comprises: Determining n historical optimal ignition advance angles according to the n historical working condition parameters; Determining n second feedback parameters according to the n historical optimal ignition advance angles and the n reference ignition advance angles; And updating the prediction model according to the n second feedback parameters and the first feedback parameters.
5. An ignition advance angle determining apparatus, characterized by comprising: the acquisition unit is used for acquiring actual working condition parameters of the engine; The prediction unit is used for predicting and obtaining a predicted ignition advance angle through a prediction model based on the actual working condition parameters; A control unit configured to control the engine operation based on the predicted ignition advance angle; A feedback determination unit configured to determine a first feedback parameter according to the predicted ignition advance angle, the first feedback parameter representing a difference between the predicted ignition advance angle and an actual optimal ignition advance angle of the engine; And the model updating unit is used for updating the prediction model based on the first feedback parameter.
6. The apparatus of claim 5, wherein the device comprises a plurality of sensors, The feedback determination unit is specifically configured to obtain a torque increment of the engine in response to the engine not knocking during the process of controlling the engine to work based on the predicted ignition advance angle, and determine a preset angle error as the first feedback parameter in response to the torque increment meeting a preset condition.
7. The method according to claim 5 or 6, wherein, The acquisition unit is further used for acquiring n historical working condition parameters, wherein n is a positive integer; The prediction unit is also used for inputting the prediction model according to the n historical working conditions and the actual working condition parameters, acquiring an output result of the prediction model, wherein the output result comprises the predicted ignition advance angle and n reference ignition advance angles, and each reference ignition advance angle corresponds to one historical working condition parameter; The feedback determining unit is further used for determining n historical optimal ignition advance angles according to the n historical working condition parameters; determining n second feedback parameters according to the n historical optimal ignition advance angles and the n reference ignition advance angles; The model updating unit is further configured to update the prediction model according to the n second feedback parameters and the first feedback parameters.
8. A vehicle comprising an engine and a controller for performing the method of any one of claims 1-4 and controlling the engine based on the predicted spark advance.
9. An apparatus comprising a memory for storing instructions or code and a processor for executing the instructions or code stored by the memory to implement the method of any one of claims 1-4.
10. A computer readable storage medium storing a computer program, characterized in that the computer program, when run by a processor, performs the method of any of claims 1-4.

Description

Ignition advance angle determining method and device and related equipment Technical Field The present application relates to the field of engine technologies, and in particular, to a method and apparatus for determining an ignition advance angle, and related devices. Background The spark advance angle, also known as the firing angle, is the angle through which the crankshaft rotates from the time the spark plug fires until the piston reaches compression top dead center. The proper ignition advance angle can improve the output power, combustion efficiency and emission performance of the engine, reduce the abrasion of the engine and prolong the service life of the engine. Therefore, the ignition advance correction control is an important element in the engine control. In some implementations, the spark advance angle may be controlled in combination with operating parameters of the engine. For example, the spark advance angle may be modified based on operating parameters such as engine speed, relative charge, etc. For another example, the ignition advance angle may be corrected based on operating parameters such as ambient temperature, ambient humidity, and the like. Based on these correction strategies, the spark advance angle can be made to fit the actual engine operating conditions to some extent. The method of correcting the ignition advance angle described above can be corrected only for specific influencing factors. In the actual process of the engine, the ignition advance angle is influenced by various factors, and a single correction strategy cannot determine the most suitable ignition advance angle. Disclosure of Invention In view of the foregoing, the present application provides a method, apparatus and related device for determining an ignition advance angle, which aims to accurately determine an ignition advance angle suitable for an engine. In a first aspect, the present application provides a method for determining an ignition advance angle, the method comprising: Acquiring actual working condition parameters of an engine; Based on the actual working condition parameters, a predicted ignition advance angle is predicted through a prediction model; Controlling the engine operation based on the predicted spark advance; Determining a first feedback parameter according to the predicted ignition advance angle, wherein the first feedback parameter represents the difference between the predicted ignition advance angle and the actual optimal ignition advance angle of the engine; updating the predictive model based on the first feedback parameter. In some possible implementations, the determining the feedback parameter according to the first point advance angle includes: acquiring a torque increment of the engine in response to knocking of the engine in the process of controlling the engine to operate based on the predicted ignition advance angle; And determining a preset angle error as the first feedback parameter in response to the torque increment meeting a preset condition. In some possible implementations, the predicting, based on the actual operating condition parameter, the predicted spark advance variable by a prediction model includes: Acquiring n historical working condition parameters, wherein n is a positive integer; Inputting the prediction model according to the n historical working conditions and the actual working condition parameters; And obtaining an output result of the prediction model, wherein the output result comprises the predicted ignition advance angle and n reference ignition advance angles, and each reference ignition advance angle corresponds to one historical working condition parameter. In some possible implementations, the updating the prediction model based on the first feedback parameter includes: Determining n historical optimal ignition advance angles according to the n historical working condition parameters; Determining n second feedback parameters according to the n historical optimal ignition advance angles and the n reference ignition advance angles; And updating the prediction model according to the n second feedback parameters and the first feedback parameters. In a second aspect, the present application provides an ignition advance angle determining apparatus, the apparatus comprising: the acquisition unit is used for acquiring actual working condition parameters of the engine; The prediction unit is used for predicting and obtaining a predicted ignition advance angle through a prediction model based on the actual working condition parameters; A control unit configured to control the engine operation based on the predicted ignition advance angle; A feedback determination unit configured to determine a first feedback parameter according to the predicted ignition advance angle, the first feedback parameter representing a difference between the predicted ignition advance angle and an actual optimal ignition advance angle of the engine; And the model updating unit i