Affiliation:
1. Department of Transport Technology, University of Technology, Loughborough, Leicestershire
Abstract
A technique for estimating the power contribution of each cylinder in a multi-cylinder diesel engine is developed as an engine diagnostic capability. Robust magnetic sensors are used to obtain a waveform of engine speed fluctuations over one engine cycle under steady state operating conditions. Adopting a simplified model of engine dynamics, a computer processes the time history by application of the discrete Fourier transform to reproduce the crankshaft torque waveform. Subtracting the engine inertia torque provides an estimate of the gas pressure torque waveform, from which the power contribution of individual cylinders can be determined.
Subject
General Engineering,General Medicine
Cited by
6 articles.
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1. Misfire detection of diesel engine based on convolutional neural networks;Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering;2021-01-11
2. Detection of engine misfire using characteristic harmonics of angular acceleration;Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering;2019-03-13
3. Detection and Correction of injection failures in diesel engines on the basis of turbocharger instantaneous speed frequency analysis;Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering;2005-05-01
4. Exhaust pressure pulsation observation from turbocharger instantaneous speed measurement;Measurement Science and Technology;2004-05-19
5. The on-line detection of engine misfire at low speed using multiple feature fusion with fuzzy pattern recognition;Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering;2002-05-01