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US 9,810,273 B2Granted
Methods and system for applying a driveline disconnect clutch
AssigneeFord Global Technologies, LLC
InventorsFelix Nedorezov, Francis Thomas Connolly, Xiaoyong Wang, Hong Jiang, Mark Steven Yamazaki
Life of this patent
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Abstract
Systems and methods for improving operation of a driveline disconnect clutch for a hybrid vehicle shifting are presented. In one example, pressure of a working fluid supplied to the driveline disconnect clutch is adjusted in response to a rate of change in accelerator pedal position. Further, pressure of the working fluid may be decreased responsive to selected operating conditions.
Claims11
A driveline method, comprising:
- in response to an engine start request, increasing driveline disconnect clutch working fluid pressure to a start of a closing pressure responsive to an available amount of torque of a driveline integrated starter/generator (DISG), the available amount of torque of the DISG being a maximum DISG torque at a present DISG speed and temperature minus a present DISG output torque;
- and
- increasing driveline disconnect clutch working fluid pressure from the start of closing pressure at a first rate in response to a first rate of change of an accelerator pedal, and increasing driveline disconnect clutch working fluid pressure from the start of closing pressure at a second rate in response to a second rate of change of the accelerator pedal.
Dependencies are inferred from the claim text.