Torque distribution control in a motor vehicle
First Claim
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1. A method for controlling a transfer case clutch, comprising:
- (a) determining that vehicle wheel brakes are applied;
(b) determining that an accelerator pedal of the vehicle is depressed less than a reference magnitude;
(c) determining repetitively that a rate of change of the average front wheel speed is greater than a rate of change of the average rear wheel speed; and
(d) setting the torque capacity of the clutch to a target magnitude.
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Abstract
In a vehicle powertrain that continually transmits power to a first set of vehicle wheels and selectively transmits power through a clutch to a second set of vehicle wheels, a method for controlling the clutch includes determining that brakes for slowing the vehicle wheels are applied and that an accelerator pedal of the vehicle is depressed less than a reference magnitude, determining that the rate of change of the average front wheel speed is greater than the rate of change of the average rear wheel speed, and setting the torque capacity of the clutch to a target magnitude.
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Citations
11 Claims
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1. A method for controlling a transfer case clutch, comprising:
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(a) determining that vehicle wheel brakes are applied; (b) determining that an accelerator pedal of the vehicle is depressed less than a reference magnitude; (c) determining repetitively that a rate of change of the average front wheel speed is greater than a rate of change of the average rear wheel speed; and (d) setting the torque capacity of the clutch to a target magnitude. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling a transfer case clutch for a vehicle, comprising:
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(a) if wheel brakes are applied and an accelerator pedal is depressed less than a reference magnitude, determining that a rate of change of an an average front wheel speed is greater than a rate of change of an average rear wheel speed; and (b) adjusting torque capacity of the clutch to a magnitude that removes clearances among components that transmit power from the clutch to wheels that are driven from through clutch. - View Dependent Claims (8, 9, 10, 11)
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Specification