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Concept for a Chassis Mounted Capsule of Engine and Gearbox for Heavy Trucks
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English
Abstract
The proposed reduction of noise by international legislation will probably result in a limit of 80 dB(A), measured according to ISO R 362. In order to obtain a uniform noise level for all categories of vehicles, the 80 dB(A)-limit is also forecast for heavy trucks in about 5 to 10 years. With a high powered conventional Diesel-engine, this limit can only be reached by complete enclosure of engine and gearbox. In this paper, we present a capsule mounted on the chassis, adapted to the cramped space conditions in a European truck. The design has the advantage of ease of maintenance, since it is possible to attatch the upper capsule parts to the tipping-cab. The results of the noise and temperature measurements are also reported. The great reduction of the surface noise by the capsule requires the installation of a radiator-fan-system, which is designed to reduce noise considerably.
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Krisper, G. and Kratochwill, H., "Concept for a Chassis Mounted Capsule of Engine and Gearbox for Heavy Trucks," SAE Technical Paper 790449, 1979, https://doi.org/10.4271/790449.Also In
References
- Thien G. E. “Possibilities of Reducing the Noise Level of Diesel Engines” 7 Juli 1972 261 269
- Huber E. W. Wodiczka E. “Combustion Noise Analysis of Diesel Engines with Different Combustion Systems” 4 1970 153 156
- Thien G. E. Fachbach H. A. “Design Concepts of Diesel Engines with Low Noise Emission” SAE-Paper 750838 1975
- Fachbach H. A. Thien G. E. “Design Concepts of Diesel Engines with Low Noise Emission” 10 1975 261 266
- Thien G. E. Fachbach H. A. “Quiet Automobiles - A Realistic Objective.” FISITA 1976 Tokyo
- Fachbach H. A. Thien G. E. FISITA 1978 Budapest “A New Way to a Vehicle-Engine with Low Noise Emission”