Title: Investigation on axial vibration of high-speed vehicle engine crankshaft based on Rayleigh differential method

Authors: Xingyu Liang, Gequn Shu

Addresses: State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, PR China. ' State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, PR China

Abstract: A new mathematical model of axial vibration was constructed by simplifying the crankshaft to a continuous stepped shaft model and formulating kinetic formulae of shafts and masses. Applying a vector matrix, a single order or a whole system vibration can be analysed. Using a new testing device, vibrations at the free-end of the engine shaft were measured and compared with the calculation result. There was good agreement between the calculated and measured results of the resonant axial frequency, but there are some errors of axial amplitudes between the calculated and measured results.

Keywords: automotive engines; crankshaft; axial vibration; coupled vibration; mathematical modelling; continuous stepped shaft model; kinetics; vehicle vibration.

DOI: 10.1504/IJVNV.2008.021895

International Journal of Vehicle Noise and Vibration, 2008 Vol.4 No.3, pp.205 - 219

Available online: 08 Dec 2008 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article