The noise-generating mechanism of a reciprocating air compressor for heavy duty vehicles during idling was investigated. It was elucidated that the gear rattling noise of the air compressor drive gear train caused by the negative value of the air compressor drive torque was a major noise source. To completely suppress the gear rattling phenomenon, a new loading device with an air cylinder that cancels the negative value of the air compressor drive torque was fabricated. When the loading device was worked, the impulsive sound level was reduced to 10 dB(A). It was found that the impulsive sound level during gear rattling is closely related to the difference in gear teeth velocity between the crankshaft gear and the air compressor drive gear, as one of the characteristics that are needed to obtain a guide for carrying out estimations in the calculation simulation.
Noise-Generating Mechanism and Noise Reduction of Reciprocating Air Compressor for Heavy Duty Vehicles
Sae Technical Papers
SAE 2007 Noise and Vibration Conference and Exhibition ; 2007
2007-05-15
Conference paper
English
Automotive engineering | 2007
|Noise Generating Mechanism of Reciprocating Air Compressor for Heavy Duty Vehicles (20065138)
British Library Conference Proceedings | 2006
|Exhaust noise reduction of heavy duty vehicles
Tema Archive | 1986
|Exhaust noise reduction of heavy duty vehicles
Automotive engineering | 1986
|Noise Reduction of Diesel Engine for Heavy Duty Vehicles
SAE Technical Papers | 1989
|