Method for combined pulse spectrum to control engine ignition closed angle

Abstract

The invention provides a method for controlling an ignition dwell angle of an engine by a combined pulse spectrum, belonging to the vehicle gasoline engine control field, comprising a basic ignition dwell angle pulse spectrum parameter and a dynamic ignition dwell angle pulse spectrum parameter, wherein, the basic ignition dwell angle pulse spectrum parameter is standardized by a jack horse or optimized and standardized by the jack horse and a road parameter, the dynamic ignition dwell angle pulse spectrum parameter is the pulse spectrum of the self-optimization control and the on line self-standardization of the engine generated by self-adaptivity, the basic ignition dwell angle pulse spectrum parameter and the dynamic ignition dwell angle pulse spectrum parameter form a combined pulse spectrum parameter, and the adaptively control of the ignition dwell angle of the gasoline engine is controlled by a control system according to a control strategy. The combined pulse spectrum control way synthesized by the self-adapting study method is adopted; therefore, the influence of the change in a controlled system and the unknown change on the engine is corrected, thereby improving the control accuracy of the open-loop control and increasing the speed and improving the timeliness of the control.

Description

technical field [0001] The invention relates to a method for controlling the ignition dwell angle of an engine by combining maps, belonging to the field of automobile gasoline engine control. Background technique [0002] The control of gasoline engines for vehicles is mainly divided into ignition control and fuel injector control; among them, ignition control is divided into ignition advance angle control and ignition dwell angle control. The control of ignition advance angle and ignition dwell angle is implemented by electronic ignition device; electronic ignition device is composed of signal generator (given by control unit ECU), ignition coil, electronic control module and spark plug. Most of the currently used electronic ignition devices have variable closing control, which generally ensures that the relative closing rate of the ignition dwell angle is proportional to the rotational speed, so as to ensure that the ignition closing time is relatively constant, thereby en...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a strategy for adaptively generating a dynamic map according to changes in engine-related characteristics and engine use conditions during the working process for the problems existing in the current gasoline engine control methods, and then Provides a method for controlling the ignition dwell angle of the engine by combining the dynamic map parameters and the basic map parameters determined by the original prototype bench.

Images