422 電気自動車の高機能を実現するタンデムホイールサスペンションの乗り心地性能の検証

抄録

We have developed and verified a new suspension system for an electric vehicle naming Tandem Wheel Suspension System (TWS). TWS is a new suspension concept for p electric driven vehicle that makes a great progress in space utility, handling ability and ride comfort. A general concept of TWS is replacing the 4 larger sized wheels with 8 smaller wheels. The 8wheels consist of the four couples of adjoined two wheels. These two wheels are connected with the hydraulic piping installed in each shock absorber. Further more, those hydraulic piping are connected with the unit of large capacity hydro-pneumatic spring shock absorber. We have made simulation analyses on ride comfort and to verify TWS performance. And in this research, we have developed new TWS simulation model to increase reproductive precision. These simulations reveal that ride comfort of TWS should be improved compared with 4wheels reducing the body vibrations by 4.5 times under 1 Hz.