Browse Publications Technical Papers 2012-01-1625
2012-09-10

Analysis of Ticking Noise from Cam Bearing of a Diesel Engine 2012-01-1625

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.

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