Patent ID: 6979276
Filing Date: 2005-12-27
Classification: F16H

Abstract:
1. A control system for a multi-regime continuously variable ratio transmission system having input and output shafts and comprising a continuously variable ratio transmission variator connected to the input shaft, a mixing epicyclic gear train having a first input gear coupled to the input shaft, a second input gear connected to the variator output and an output gear driving an output shaft and a plurality of fluid-pressure actuated clutches to engage the outputs and ratio combinations to operate the continuosly variable ratio transmission variator in a plurality of regimes, the control system comprising means for engaging the clutch of a new regime, retaining both clutches engaged in a synchronous mode and disengaging the clutch of the old regime, the control system comprising means for applying fluid pressure to engage the new regime clutch in a single stage at the maximum available clutch engaging fluid pressure.