Patent ID: 7217214
Filing Date: 2007-05-15
Classification: F16H,Y10T

Abstract:
1. A continuously variable transmission for use with motor vehicles comprising: an electronic control unit configured to include logic rules for controlling a transmission, including issuing transmission control commands; an automated gear unit having gears providing a plurality of selectively engaged gear ratios and engaging one of the plurality of gear ratios responsive to commands from the electronic control unit to do so and the gear unit having a gear unit input shaft and a gear unit output shaft; a variator having a variator input shaft and a variator output shaft and configured to continuously vary a ratio of input torque to output torque between the variator shafts responsive to commands from the electronic control unit, the variator output shaft drivingly connected to the gear unit input shaft; an input gear set drivingly connected to the variator input shaft; an input fixed ratio element configured to reduce the torque from the input gear set to the variator and operably disposed between the input gear set and the variator input shaft; and an output fixed ratio element configured to increase the torque from the variator and operably disposed between the variator output shaft and the gear unit input shaft.