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US 11,400,915 B2Granted
Methods and system for starting an engine
AssigneeFord Global Technologies, LLC
InventorsJoseph Kucharski, Peter Keller, Andrew E. Burt, Minku Lee
Life of this patent
Estimating the term…
Abstract
Systems and methods for starting an engine that is incorporated into a hybrid vehicle driveline are described. In one example, a torque converter clutch is fully opened if a threshold amount has transpired after a request for torque converter clutch slip is requested but not delivered. Further, the torque converter clutch may be fully opened if a commanded torque converter clutch torque capacity is less than a threshold torque capacity.
Claims20
A driveline operating method, comprising:
- requesting an engine start;
- and
- requesting slip of a torque converter clutch in response to the request to start the engine;
- and
- fully opening the torque converter clutch via a controller after a threshold amount of time has passed since the requesting slip of the torque converter clutch when slip of the torque converter clutch is not present.
2 more elements
A driveline operating method, comprising:
- requesting an engine start;
- and
- requesting slip of a torque converter clutch in response to the request to start the engine;
- and
- fully opening the torque converter clutch via a controller after a commanded torque converter clutch torque capacity is reduced to less than a threshold torque capacity after requesting slip of the torque converter clutch when slip of the torque converter clutch is not present.
2 more elements
A system, comprising:
- an engine;
- an electric machine;
- a driveline disconnect clutch;
- a torque converter including a torque converter clutch;
- and
- a controller including executable instructions stored in non-transitory memory to fully open the torque converter clutch, rotate the engine via torque provided via the electric machine, and closing the driveline disconnect clutch in response to a threshold amount of time having passed since requesting slip of the torque converter clutch in response to an engine start request when slip of the torque converter clutch is not present.
3 more elements
Dependencies are inferred from the claim text.