There are four major heavy-duty vehicle manufacturers in Japan. Having realized the social importance of the noise problem and difficulty in technical development to combat the problem, they conducted a three-year joint project on noise reduction of heavy vehicles from 1974. Such a joint research had never been performed before in Japan by companies competing with each other. The first two years were spent on the technical development of four sub-systems. Then the developed know-how was pooled among the four companies. An experimental vehicle was manufactured by each company in the third year based on all the know-how individually developed and mutually disclosed. Since an energetic program of research and preparation work is still underway, the entire range of measures has not been established yet in spite of the introduction of new noise regulations. This paper outlines the predicted measures, points out pending problems and future subjects and reviews this noise control problem from various aspects. (Wassmann)
Outline of research works on heavy vehicle noise reduction in Japan
Ueberblick ueber Forschungsarbeiten zur Geraeuschminderung bei Schwerfahrzeugen in Japan
JSAE Review ; 2 ; 9-16
1980
8 Seiten, 6 Bilder, 8 Tabellen, 2 Quellen
Aufsatz (Zeitschrift)
Englisch
Outline of Research Works on Heavy Vehicle Noise Reduction in Japan
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