Title: A novel method for improving analysis precision of transient torsional vibration of engine

Authors: Kang Ding, Zhijian Yang

Addresses: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, PR China. ' School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, PR China

Abstract: For transient torsional vibration analysis of an engine, the Revolution Tracking Analysis (RTA) method cannot accurately estimate harmonic amplitudes of torsional vibration signal, owing to the Low Frequency Rolling Vibration (LFRV) caused by radial vibration of the crankshaft. To overcome the disadvantage of the RTA method, the Windowed Revolution Tracking Analysis (WRTA) method is proposed. Simulation and experiment results show that, except for the 0.5th harmonic, amplitude precision of the other harmonics of transient torsional vibration signal in a four-stroke engine are greatly improved using the proposed method.

Keywords: transient torsional vibration; RTA; revolution tracking analysis; LFRV; low frequency rolling vibration; WRTA; windowed revolution tracking analysis; vehicle design; radial vibration; crankshaft vibration; four-stroke engines.

DOI: 10.1504/IJVD.2009.024958

International Journal of Vehicle Design, 2009 Vol.49 No.4, pp.275 - 286

Published online: 05 May 2009 *

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