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Noise Reduction of Heavy-Duty Trucks
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English
Abstract
This paper describes the development of noise control treatments for two heavy-duty diesel trucks. Noise levels are reduced to 72 dBA when measured according to the SAE J366b Recommended Practice. The treatments, comprising primary dual exhaust systems and partial engine enclosures, reduce exhaust back pressures by 0.3 to 0.4 in. Hg and add about 2 1/2 percent to the tractor weights. Cooling tests show that engine oil, engine coolant, and air-to-boil temperatures meet manufacturers' specifications. Maintenance studies indicate that about 5 min is required to remove and replace three key access panels.
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Citation
Bender, E., Bronsdon, R., and Remington, P., "Noise Reduction of Heavy-Duty Trucks," SAE Technical Paper 810852, 1981, https://doi.org/10.4271/810852.Also In
References
- Bender E.K. Ernest J.W. Kane J.A. “Noise Reduction Technology and Costs for a Ford CLT 9000 Heavy-Duty Diesel Truck,” Bolt Beranek and Newman Inc. Report No. 4379 December 1980
- Bender E.K. Kane J.A. Remington P.J. “Noise Reduction Technology and Costs for a General Motors Brigadier Heavy-Duty Diesel Truck,” Bolt Beranek and Newman Inc. Report No. 4507 November 1980
- “Noise Emission Standards for Transportation Equipment,” 40 CFR 205, Federal Register, Vol. 41 13 April 1976