Method for combined pulse spectrum controlling engine ignition timing

Abstract

The invention provides a method for controlling ignition timing of an engine by a combined pulse spectrum, belonging to the vehicle gasoline engine control field, comprising a basic ignition timing pulse spectrum parameter and a dynamic ignition timing pulse spectrum parameter, wherein, the basic ignition timing pulse spectrum parameter is standardized by a jack horse or optimized and standardized by the jack horse and a road parameter, the dynamic ignition timing pulse spectrum parameter is the pulse spectrum of the self-optimization control and the on line self-standardization of the enginegenerated by self-adaptivity, the basic ignition timing pulse spectrum parameter and the dynamic ignition timing pulse spectrum parameter form a combined pulse spectrum parameter, and the adaptively control of the ignition timing 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 timing 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. [0003] During the control process, the control unit checks the control map according to the basic control conditions, and corrects and outputs the control map according to the engine state conditions reflected by each sensor, and controls each actuator to control the target. Control is divided into open-loop control and closed-loop control. [0004] The open-loop control of engine ignition timing is mainly based on three basic signal inputs, namely, the engine load signal determined by the intake air flow signal and the throttle signal, the engine speed signal and the crankshaft position signal; the closed-loop control is based on the signal feedbac...

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a strategy for adaptively generating dynamic map parameters 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. Furthermore, a method for controlling the engine by the combined map parameters combined with the map parameters calibrated by the original bench is provided

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