This paper describes the procedures used to reduce the tonal noise of a class eight truck engine timing gear train that was initially found to be objectionable under idle operating conditions. Initial measurements showed that the objectionable sounds were related to the fundamental gear mesh frequency, and its second and third harmonics. Experimental and computational procedures used to study and trouble-shoot the problem include vibration and sound measurements, transmission error analysis of the gears under light load condition, and a dynamic analysis of the drive system. Detail applications of these techniques are described in this paper.
Case History: Engine Timing Gear Noise Reduction
Sae Technical Papers
Noise & Vibration Conference & Exposition ; 1999
1999-05-17
Conference paper
English
Case history: engine timing gear noise reduction
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