Trend of motorcycle engine valves in Japan
- Nittan Valve Co., Ltd., Tokyo (Japan)
Production of motorcycles in Japan has greatly decreased after peaking in 1981. However, as a result of an increase in local production, mainly in Asian nations, the production of sets, often called Knock Down (KD) sets, has been increasing. These sets are a shipment of parts that are ready for assembly in the importing country. In this area, motorcycle manufacturers are trying to improve performance and decrease noise and pollution. This report will outline the trends in motorcycle engine valves and the changes that have occurred with respect to valve materials, valve design specifications, and valve manufacturing processes, as experienced by Nittan Valve Co., Ltd. over the past 15 years. Motorcycles are used in various ways. They are used for transportation, sport, leisure, and hobby. Therefore, the forms and specifications of their bodies and engines are quite varied. The production of motorcycles in Japan has sharply decreased from an era of peak production in 1981 and in recent years, has remained low at around 3 million motorcycles per year. As a result, each motorcycle manufacturer has been promoting the local production in each country, and the production of KD sets is rapidly increasing today. The motorcycle and parts manufacturers are working on employing new technologies for anti-pollution measures, improving performance, decreasing noise, and better safety measures. With this in mind, the technological trends of Japanese engine valves being manufactured by Nittan Valve Co., Ltd. will be reported.
- OSTI ID:
- 577645
- Report Number(s):
- CONF-9704126-; TRN: 98:001260-0003
- Resource Relation:
- Conference: International symposium on valvetrain system design and materials, Dearborn, MI (United States), 14-15 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of Valvetrain system design and materials; Bolton, H.A.; Larson, J.M. [eds.]; PB: 144 p.
- Country of Publication:
- United States
- Language:
- English
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