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US 10,086,836 B2Granted
Methods and systems for a four wheel drive vehicle driveline
AssigneeFord Global Technologies, LLC
InventorsJeffrey Allen Doering, Alex O'Connor Gibson, Gregory Michael Pietron, James William Loch McCallum, Yuji Fujii
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operation may be adjusted in response to operating the hybrid vehicle in a four wheel drivel low gear range. The approaches may improve vehicle drivability and reduce driveline degradation.
Claims17
A method of adjusting operation of a hybrid vehicle, comprising:
- automatically restarting an engine in response to a first condition while the hybrid vehicle is operating in a four wheel drive low gear range;
- and
- automatically restarting the engine in response to a second condition other than the first condition while the hybrid vehicle is not operating in the four wheel drive low gear range.
A method of adjusting operation of a hybrid vehicle, comprising:
- automatically restarting an engine in response to release of a vehicle brake while the hybrid vehicle is operating in a four wheel drive low gear range;
- and
- commanding a torque to a torque converter impeller while the hybrid vehicle is operated in the four wheel drive low gear range that is different than a torque supplied to the torque converter impeller during similar operating conditions while the hybrid vehicle is operated in a two wheel drive mode.
A method of adjusting operation of a hybrid vehicle, comprising:
- automatically restarting a stopped engine in response to a driver selecting a four wheel drive range.
Dependencies are inferred from the claim text.