基于火花塞离子电流的燃烧诊断系统研究概述

Research on combustion diagnosis system based on spark plug ionization current

描述火花塞离子电流产生机理、检测方法及其在发动机控制、诊断中的应用。指出离子电流检测过程中几个关键性问题,提出基于离子电流的汽油机燃烧诊断系统的研究方法,首要问题是明确离子电流和燃烧室内压力的数量关系。

This paper describes mechanism detective methods control of spark plug ionization current. Several key problems that and the application we focused on were to engine diagnosis and pointed out in detecting ionization current process. Research approach on combustion diagnosis system based on spark plug ionization current is put forth. It is necessary to analyse the relation between density of spark plug ionization current and pressure in combustion chamber.