Clutch controls for electric vehicle transmission with modular actuation system
AssigneeGM Global Technology Operations LLC
InventorsDongxu Li, Michael Ding, Bryan John Williams, Chunhao J. Lee, Zhen J. Zhang
Life of this patent
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Abstract
A vehicle includes a transmission that performs a method of operating a clutch of a vehicle. The vehicle includes the clutch, an actuator device and a processor. The actuator device includes a piston movable to operate the clutch. The processor is configured to receive a pressure signal indicative of a selected fluid pressure for operating the clutch, determine a position for the piston in the actuator device from the pressure signal, and move the piston to the position to operate the clutch at the selected fluid pressure.
Claims20
A method of operating a clutch of a vehicle, comprising:
- determining, at a processor, a selected motor speed parameter for a motor based on a gear shift signal, a current motor torque and an inertia of a rotating component of the clutch;
- determining, at the processor, a pressure signal based on the selected motor speed parameter, the pressure signal indicative of a selected fluid pressure for operating the clutch;
- determining, at the processor, a position for a piston of an actuator for the clutch, from the pressure signal;
- and
- moving the piston to the position to operate the clutch at the selected fluid pressure.
A transmission of a vehicle, comprising:
- an actuator device for operating a clutch of the transmission, the actuator device including a piston;
- and
- a processor configured to:
- determine a selected motor speed parameter based on a gear shift signal, a current motor torque and an inertia of a rotating component of the clutch;
- determine a pressure signal based on a selected motor speed parameter for a motor, wherein the pressure signal is indicative of a selected fluid pressure for operating the clutch;
- determine a position for the piston in the actuator device from the pressure signal;
- and
- move the piston to the position to operate the clutch at the selected fluid pressure.
A vehicle, comprising:
- a clutch;
- and
- an actuator device for operating the clutch, the actuator device including a piston;
- and
- a processor configured to:
- determine a selected motor speed parameter based on a gear shift signal, a current motor torque and an inertia of a rotating component of the clutch;
- determine a pressure signal based on a selected motor speed parameter for a motor, wherein the pressure signal is indicative of a selected fluid pressure for operating the clutch;
- determine a position for the piston in the actuator device from the pressure signal;
- and
- move the piston to the position to operate the clutch at the selected fluid pressure.
Dependencies are inferred from the claim text.