Quinn IP Law
Method and apparatus to control vehicle operation on a grade
A vehicle system including a propulsion system coupled to a drive wheel and a friction brake configured to apply braking torque to a vehicle wheel is described. Operation thereof includes an instruction set that is executable to monitor vehicle speed, vehicle grade, and an operator braking request, and execute instructions upon achieving a vehicle speed that is less than a threshold speed. The instructions include controlling, via the friction brake, the braking torque to achieve a desired vehicle speed, and determining an operator acceleration request and the vehicle grade. The controller determines a minimum vehicle grade-based operator acceleration request, and releases the friction brake only when the operator acceleration request is greater than the minimum vehicle grade-based operator acceleration request.
GM Global Technology Operations LLC
B B B B B B B B B B B B
B60W B60W B60W B60W B60W B60W B60W B60W B60W B60W B60W B60W
additional additional additional additional inventional additional additional inventional additional inventional inventional inventional
Mindy L. Alan G. Kris
Barth Holmes Sevel