A Study on the Performance of Continuously Variable Transmission composed of V-belt Drive and 2K-H type Differential Gear Unit

2K-H형 차동기어장치와 V-belt를 결합한 무단변속기의 성능에 관한 연구

Continuously variable transmission(CVT) mechanisms are proposed, which can offer a backward mode, a geared neutral, an underdrive mode and an overdriver mode. They are not required of a starting device as a torque converter. CVT mechanisms developed here present two distinct operating modes which are a power circulation mode and a power split mode. The transition of two modes takes place at the particular CVU speed ratio. For these CVT mechanisms, performance analysis related to speed ratio, power ratio and theoretical efficiency are executed.