Original Article | 2010, Vol.32, No.6, pp. 619-625
Condition monitoring of valve clearance fault on a small four strokes petrol engine using vibration signals
Songpon Klinchaeam and Pornchai Nivesrangsan
pp. 619 - 625
Abstract
This paper studies condition monitoring technique of a small four strokes, single cylinder petrol engine using vibration signal analysis based on time domain, crank angle domain, and signal energy. Vibration signals are acquired from the cylinder head of the engine and used to describe engine processes such as intake/exhaust valve operations, ignition process, and combustion process. In this study, vibration signals have been applied to monitor various fault conditions in the engine such as intake and exhaust valve clearance faults. Vibration signals acquired in time domain could be mapped onto crank angle domain using top dead center signal. Time domain techniques were used to analyze vibration signals so that the main events related to the engine operations could be described easily. Using energy analysis technique, all fault conditions could be also identified. For future work, signal analysis techniques must be developed and the detected signals should be compared with other signals such as pressure signal in order to verify the accuracy of the results.
