This paper describes a system for knock detection in automobile engines using the spark plug. Operation is based on detection of the effect of the characteristic pressure fluctuations in the cylinder on the conductivity of the slightly ionized combustion gases in the vicinity of the plug gap. A signal processing method is described which gives adequate signal to noise ratio up to high engine speed.
Knock Detection by Means of the Spark Plug
Sae Technical Papers
SAE International Congress and Exposition ; 1986
1986-03-01
Conference paper
English
Knock Detection by Means of the Spark Plug
Automotive engineering | 1986
|A knock detection system using spark plug ionization current
Tema Archive | 1984
|Spark Plug as an Ionization Sensor in Engine Knock Detection
British Library Online Contents | 2000
|Knock knock -- Spark knock, wild ping or rumble?
Engineering Index Backfile | 1958
|knock-knock: Spark Knock, Wild Ping, or Rumble?
SAE Technical Papers | 1959
|