汽油机最佳点火正时转速自适应检测系统的研究

An Investigation of Adaptive System for Detecting Optimum Spark Timing in S. I. Engine

本文介绍了作者研制的一种利用单极微机控制的汽油机最佳点火正时检测系统。主要特点是通过检测汽油机转速来取得目标函数──汽油机功率和燃油消耗率的反馈信号，构成闭环自适应寻找最佳期点火正时检测系统。同时应用该系统在４９２ＱＡ型汽油机上进行试验，结果表明，该检测等并具有检测速度快、过程简单、精度高等优点。

A microcomputer-based closed-loop control system for detecting optimum spark timing in S.I. engine is proposed. The method is characcterised by finding out the optimum spark timing withmeasured engine speed. Engine speed signal has been used for feedback of engine's power and fueleconomy. In this paper. some experiment results obtained by this detecting system in a CS492QAengine have beed introduced. This system has advantages of detecting fast, simplicity and highprecision.