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US 11,679,758 B1Granted
Dynamic adaption methods and system for a driveline disconnect clutch
AssigneeFord Global Technologies, LLC
InventorsAkshay Bichkar, Jason Meyer, Bradley D. Riedle, Corey James Blue, Joseph F. Kucharski, Bret Keller
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a driveline disconnect clutch of a hybrid vehicle are presented. In one example, the systems and methods may adjust a relationship (e.g., transfer function) between an amount of electric current that is supplied to a driveline disconnect clutch control valve and a commanded driveline disconnect clutch pressure.
Claims18
A driveline operating method, comprising:
- adjusting a relationship between a current supplied to a valve actuator and a driveline disconnect clutch pressure via a controller responsive to a difference between a maximum driveline disconnect pressure measured during an engagement phase of closing a driveline disconnect clutch and a maximum commanded driveline disconnect clutch pressure during the engagement phase;
- where the engagement phase begins at an end of a stroke phase and ends when slip of the driveline disconnect clutch is less than a threshold amount of slip.
A system, comprising:
- an engine;
- an electric machine;
- a driveline disconnect clutch positioned between the engine and the electric machine;
- a valve hydraulically coupled to the driveline disconnect clutch and operated via a valve actuator;
- a transmission coupled to the electric machine;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to adjust a relationship between a current supplied to the valve actuator and a driveline disconnect clutch pressure responsive to a step change in a commanded driveline disconnect clutch pressure;
- where the step change is a reduction in the commanded driveline disconnect clutch pressure from a boost pressure to a value at or above stroke pressure, depending on required capacity.
5 more elements
A driveline operating method, comprising:
- adjusting an electrical current supplied to a driveline disconnect clutch valve actuator in response to a difference between a commanded driveline disconnect clutch pressure and a peak driveline disconnect clutch pressure, the peak driveline disconnect clutch pressure occurring during an engagement phase of closing a driveline disconnect clutch;
- where the engagement phase begins at an end of a stroke phase and ends when slip of the driveline disconnect clutch is less than a threshold amount of slip.
Dependencies are inferred from the claim text.