Device for detecting pressure fluctuations in a combustion chamber of internal combustion engine

摘要

A device for detecting pressure fluctuations in a combustion chamber of an internal combustion chamber includes two ionic current gages positioned in an end gas region of the combustion chamber and spaced from each other by a predetermined distance in an axial direction. The device detects pressure knocks in the combustion chamber by defining various time intervals for the occurrence of the ionic current during the knocking combustion and non-knocking combustion of gases in the combustion chamber.