The Japan Society of Mechanical Engineers International Symposium on Speed-up, Safety and Service Technology for Railway and Maglev Systems 2009 (STECH’09) 2009.6.16-19 Niigata JAPAN THE BODY INCLINING SYSTEM OF THE SERIES N700 SHINKANSEN Yasuki Nakakura *1 and Kosuke Hayakawa *2 *1 Shinkansen Operations Division, Central Japan Railway Company,
[email protected] *2 Shinkansen Operations Division, Central Japan Railway Company,
[email protected] ABSTRACT 2. OVERVIEW OF THE BODY INCLINING The Series N700 is the first Shinkansen rolling stock to SYSTEM employ a body inclining system, which allows speed increases on curves while maintaining riding comfort. 2.1 Requirements of the body inclining system for a For use in the Tokaido Shinkansen, such a system needs Tokaido Shinkansen train-set to be light-weight and possess a reliable means to provide Over the years, body inclining system has been used with high precision position data. Reliability is a crucial factor conventional trains, but no such system has been when considering that the Tokaido Shinkansen operates a employed in Shinkansens excluding cases of test use. maximum of 13 train-sets per hour. In order to meet these Looking at high-speed trains in Europe, there exist cases requirements, the Series N700 adopts a simple and light where body-inclining mechanisms have been adopted weight air-spring based body inclining mechanism, such as the Italian ETR450 and the Swedish X2000. which combines the new automatic train control (ATC) However, their mechanisms are complex and heavy, technology capable of providing reliable high-precision making them unsuitable for use in the Tokaido position data, and control transmission technology that Shinkansen, where axle load restriction is strict.