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US 9,527,505 B1Granted
Methods and system for operating a driveline disconnect clutch
AssigneeFord Global Technologies, LLC
InventorsAlexander O'Connor Gibson, Todd McCullough, Felix Nedorezov, Akshay Bichkar, Stuart N. Ford, Walter Joseph Ortmann
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a transmission of a hybrid vehicle's driveline are presented. In one example, the systems and methods estimate a driveline disconnect clutch stroke pressure and gain via extending a line from a non-zero driveline disconnect clutch torque capacity to a zero driveline disconnect clutch torque capacity.
Claims20
A driveline operating method, comprising:
- receiving inputs to a controller;
- operating a driveline disconnect clutch via the controller in response to a clutch stroke pressure, the clutch stroke pressure based on a clutch pressure minus a value, the value based on a first clutch torque transfer capacity change divided by a ratio of a second clutch torque transfer capacity change to pressure change.
A driveline operating method, comprising:
- operating a driveline integrated starter/generator (DISG) in a speed control mode;
- increasing a driveline disconnect clutch apply pressure while the DISG is in the speed control mode;
- receiving inputs to a controller while increasing the driveline disconnect clutch apply pressure;
- and
- operating a driveline disconnect clutch via the controller in response to a clutch stroke pressure, the clutch stroke pressure based on a clutch pressure minus a value, the value based on a first clutch torque transfer capacity change divided by ratio of a second clutch torque transfer capacity change to pressure change.
2 more elements
A system, comprising:
- an engine;
- a motor;
- a disconnect clutch positioned in a driveline between the engine and the motor;
- a transmission coupled to the motor;
- and
- a controller including executable instructions stored in non-transitory memory for operating a driveline disconnect clutch via the controller in response to a clutch stroke pressure estimated from a driveline disconnect clutch gain, the driveline disconnect clutch gain based on a change in driveline disconnect clutch torque capacity divided by a change in driveline disconnect clutch apply pressure.
3 more elements
Dependencies are inferred from the claim text.