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Reducing Noise from Heavy Diesel Trucks by Engine Compartment Shielding
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Sector:
Event:
Fleet Week
Language:
English
Abstract
A large number of laboratory tests on diesel engines have proved that noise emission can be reduced by more than 10 dB by applying insulation directly to the engine or by totally enclosing the engine. However, the application of these methods on trucks involves appreciable difficulty and time-consuming design modifications.
This paper describes how significant noise reduction can be attained merely by soundly designed shielding, without the need for modifying the basic design of the truck. The method is based upon experience from other types of vehicles which, for a number of years, have already been equipped as standard with similar insulation.
The reduction attained in the noise emission is approximately 6 dB(A). Inconvenience during repairs and service has been reduced to a minimum by a well-planned design and simple mounting of the shields as well as ample exposure of the engine when the cab is tilted.
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Authors
Citation
Rönnhult, J., "Reducing Noise from Heavy Diesel Trucks by Engine Compartment Shielding," SAE Technical Paper 730682, 1973, https://doi.org/10.4271/730682.Also In
References
- Priede T. Austen A. E. W. Grover E. G. “Effect of Engine Structure on Noise of Diesel Engines.” Proceedings IME 179 4 1964-1965
- Thien Gerhard Fachbach Heinz 5 May 1971
- Thien Gerhard 7 June 1972
- Juhâsz Ferenc 1 January 1968
- Krämer W. 8 July 1972