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US 11,643,067 B2Granted
Method and system for providing torque to clutch in hybrid vehicle
AssigneeFord Global Technologies, LLC
InventorsYang Xu, Akshay Bichkar, Zhengyu Dai, Hiral Jayantilal Haria, Hong Jiang, Jason Meyer
Life of this patent
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Abstract
A hybrid vehicle includes an electric motor and a combustion engine. A K0 clutch couples the combustion engine to a drivetrain of the vehicle. A control module of the vehicle calculates a torque to be applied by the motor to the K0 clutch when initiating engagement of the combustion engine to the drivetrain. The control module calculates two separate torque lead values by two separate methods and calculates the torque by combining the two torque lead values.
Claims9
A method, comprising:
- estimating a flow rate of a fluid in a clutch of a vehicle by sensing a pressure of the fluid in a fluid line of the clutch;
- estimating a pressure at a piston of the clutch based on the flow rate;
- computing a first torque lead value based on the pressure at the piston and a selected lead time;
- computing a second torque lead value based on a pressure at a valve of the clutch and the selected lead time;
- computing a third torque lead value by combining the first torque lead value and the second torque lead value;
- and
- applying torque from a motor of the vehicle based on the third torque lead value.
4 more elements
Dependencies are inferred from the claim text.