发明授权
US07344477B2 Up shift control with overrunning clutch 有权
升档离合器的升档控制

Up shift control with overrunning clutch
摘要:
An automatic transmission for a vehicle includes a multi-plate clutch having an applied state and a released state and an overrunning clutch having an engaged state and an overrunning state. In addition, the transmission includes a controller that effectuates a gear shift of the transmission by applying a volume of fluid to the multi-plate clutch to toggle the multi-plate clutch from the released state to the applied state at approximately the same time the overrunning clutch is toggled into the overrunning state. The applied volume of fluid at which the multi-plate clutch is applied is substantially given by the following equation: VF=VL−(k*T) where VF is the volume, VL is the instantaneous volume at any time, k is a constant, and T is the input torque to the transmission.
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