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US 2016/0185341 A1Published application
Methods and systems for driveline torque control
AssigneeFord Global Technologies, LLC
InventorsDennis Craig Reed, Robert Wright, Daniel Colvin, Jeffrey Allen Doering
Life of this patent
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Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline oscillations are reduced during engine air-fuel ratio modulation. The driveline oscillations may be reduced via adjusting torque of a motor.
Claims14
A method for operating a driveline, comprising:
- varying an engine air-fuel ratio;
- and
- adjusting torque of a motor supplying torque to the driveline in response to varying the engine air-fuel ratio.
8-14. (canceled)
A method for operating a driveline, comprising:
- not adjusting spark timing of an engine in response to engine air-fuel ratio changes when battery state of charge is greater than a first threshold battery state of charge;
- and
- adjusting spark timing of the engine in response to engine air-fuel ratio changes when battery state of charge is less than a second threshold battery state of charge.
Dependencies are inferred from the claim text.