火花塞离子电流信号及其在发动机检测和控制中的应用

火花塞离子电流作为研究内燃机中燃烧过程的方法受到越来越多的重视。并回顾了火花塞离子电流的检测方法、离子电流机理、模型，以及在发动机检测，诊断和控制中的各种应用。与其他方法相比，利用火花塞检测离子电流，不需对现有发动机进行大的改造，而能获得发动机多项燃烧参数，达到对发动机诊断和控制的目的，文中最后给出了利用离子电流研究发动机爆震的有关实验结果。

Spark Plug Gap Ion Current and Its Application in Engine Diagnosis And Control

As a relatively simple and cheap method to invest the combustion inside an internal combustion engine, spark plug gap ionization current receives more and more interests from different groups. This paper reviews its formation, detective methods and the application to engine diagnosis and control. Unlike other current in use approaches, using the spark plug to detect the ion current and then interpreting the signal to get the combustion information, it avoids modifying the engine structure and is very reliable and simple to meet requirement of engine diagnosis and control. Some experiment results about knock detection using sparking ion current are given.