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US 11,878,677 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
Estimating the term…
Abstract
A method includes estimating a first pressure at a first location of a clutch based on a flow rate of a fluid in the clutch, computing a first torque lead value based on the first pressure, computing a second torque lead value based on a second pressure, 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.
Claims20
A method comprising:
- estimating a first pressure at a first location of a clutch based on a flow rate of a fluid in the clutch;
- computing a first torque lead value based on the first pressure;
- computing a second torque lead value based on a second pressure;
- 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.
3 more elements
A method comprising:
- estimating a flow rate of a fluid in a clutch of a vehicle;
- estimating a first pressure at a first location of the clutch based on the flow rate;
- computing a first torque lead value based on the first pressure, a selected lead time value, and a delay time value;
- computing a second torque lead value based on a second pressure, the selected lead time value, and the delay time value, the second pressure is estimated at a second location of the clutch that is different than the first location;
- 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
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 estimated pressure at the piston, a selected lead time value, and a delay time value;
- computing a second torque lead value based on a pressure at a valve of the clutch, the selected lead time value, and the delay time value;
- 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 to an axle of the vehicle based on the third torque lead value,
- wherein the axle of the vehicle is driven by the motor prior to computing the third torque lead value.
5 more elements
Dependencies are inferred from the claim text.