Feasibility Demonstration of a Novel, Flat-Belt, Continuously Variable Transmission for Automotive and Electric-Hybrid Vehicle Application. Final Report

摘要

The performance of the Kumm Flat Belt Continuously Variable Transmission (CVT) was determined over its design input speed, output torque, and speed ratio range. This report documents both the tests results and the design, fabrication, and assembly activities. A novel flat belt pulley concept is used in the CVT. This arrangement significantly reduces the required width of the pulleys and their actuators as compared to pulleys whose sheaves are moved axially by actuators to vary the belt radius ratio or pulley speed ratio. The operation of the flat belt pulley guideway discs positioning the belt by moving belt drive elements radially is shown. (ERA citation 10:010054)