A Development of Tractor's Continuously Variable Transmission based on Combined Planetary Gear Train

1st Report, Theoretical Analysis Method and Estimative Tests

Abstract

A new type of a mechanical variable transmission, which consists of a 2 K-H type differential gear and a HST unit is devised. The pattern of this transmission is replaced with a combined planetary gear train system. Through a theoretical analysis of the system, it is confirmed that the power circulation is occurring in the system. And it is made possible to realize a new type highly efficient transmission only by controlling the quantity of the power flow.