Back to results
US 9,802,606 B2Granted
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
Estimating the term…
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.
Claims5
A method for operating a driveline, comprising:
- not adjusting spark timing of an engine in response to engine air-fuel ratio changes when a 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 the battery state of charge is less than a second threshold battery state of charge;
- and adjusting torque of a motor supplying torque to the driveline in response to the engine air-fuel ratio changes while not adjusting the spark timing, wherein while adjusting spark timing in response to engine air-fuel ratio changes, not adjusting torque of the motor responsive to the engine air-fuel ratio changes.
Dependencies are inferred from the claim text.