Off-going clutch control
AssigneeGM Global Technology Operations LLC
InventorsLawrence A. Kaminsky, Jy-Jen F. Sah
Life of this patent
Estimating the term…
Abstract
A vehicle includes an engine, a motor, and a gearbox. A clutch is configured to engage to transfer a reactive torque to at least one of the engine, the motor, and the gearbox. The clutch is configured to disengage during a transition from a present operating mode to a target operating mode. A controller is configured to determine an expected slip direction of the clutch, define a non-zero value based at least in part on the expected slip direction, and command the reactive torque to the non-zero value to control the clutch to induce slip during the transition from the present operating mode to the target operating mode.
Claims10
A vehicle comprising:
- an engine configured to generate an engine torque;
- a motor configured to generate a motor torque;
- a gearbox configured to receive at least one of the engine torque and the motor torque;
- a clutch configured to engage to transfer a reactive torque to at least one of the engine, the motor, and the gearbox, and wherein the clutch is configured to disengage during a transition from a present operating mode to a target operating mode;
- and
- a controller configured to determine an expected slip direction of the clutch, define a non-zero value based at least in part on the expected slip direction, and command the reactive torque to the non-zero value to control the clutch to induce slip during the transition from the present operating mode to the target operating mode.
Dependencies are inferred from the claim text.