Combustion Detection in IC Engine by Analysis of Instantaneous Angular Acceleration

Abstract

Combustion is an essential event in an internal combustion engine. Proper combustion signifies the proper output of power. Sometimes, the combustion becomes improper due to many reasons such as inappropriate stoichiometric air-fuel ratio, compression ratio, fault in spark plug, etc. Therefore, identification of appropriate and inappropriate combustion is a primary concern for all. The combustion is mainly detected by a pressure measuring sensor. However, the price of the sensor is actually high and fitting of it on engine cylinder head is a tough task. Therefore, in this paper, instantaneous angular acceleration (IAA) measurement from the output shaft is used.