Experimental Research on Misfire Diagnosis Using the Instantaneous Angular Speed Signal for Diesel Engine

Abstract

Built a test bench for WP10.240 high-speed diesel engines, the normal and misfire faults were simulated, the Top Dead Centers (TDC) signal and Instantaneous Angular Speed (IAS) signal were measured; The IAS signals of the diesel engine were processed by the period average, tooth average and smooth handling methods, the IAS signals were analyzed in both conditions of normal and single cylinder misfire, the feature parameters were abstracted, and the fault diagnosis criteria using the IAS signal for misfire were obtained.