Improving idle sound quality as well as reducing idle noise level is increasingly demanded for diesel engines. Therefore, unusual noise occurrence at idle is a serious problem, and the noise must be removed. This paper describes the characteristics and mechanism of ticking noise that is unusual noise radiated from the journal bearing of the camshaft at low idle speeds, based on the mechanism of cavitation in oil film existing between the journal and bearing.
Analysis of Ticking Noise from Cam Bearing of a Diesel Engine
Sae Int. J. Engines
SAE 2012 International Powertrains, Fuels & Lubricants Meeting ; 2012
Sae International Journal of Engines ; 5 , 4 ; 1571-1580
2012-09-10
10 pages
Aufsatz (Konferenz)
Englisch
Valvetrain Ticking Noise Analysis
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