Gm Global Technolgoy Operations, Inc.

Cary Walter Brooks

Allen John Walenty

Anthony Luke Simon

The present invention relates to methods of torque transfer, torque transfer units, and vehicles incorporating the same. According to the method, a delta signal indicative of a rotational condition of the first driveline is generated and a torque transfer unit is controlled as a function of a torque transfer control algorithm. The control algorithm commands a transfer torque representing an amount of torque to transfer from the source of power to one of the first and second drivelines. The torque transfer control algorithm is a function of the delta signal and is substantially independent of any rotational condition of the second driveline over a primary operational range of the algorithm. Reference values may comprise a desired vehicle acceleration value, an actual vehicle acceleration value, a vehicle ground speed value, temporally displaced first driveline acceleration values, temporally displaced first driveline speed values, and combinations thereof.

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Shelby Township, MI, United States of America

Cary Walter Brooks