A method and apparatus to control acceleration of a vehicle equipped with
an electrically variable transmission and including a regenerative
braking system, each are operably connected to a vehicle driveline. The
method and apparatus include determining which one of a preselected shift
selector position for the transmission is commanded, and determining
operator demand for acceleration, using inputs from throttle pedal and
brake pedal. Vehicle acceleration is measured, and magnitude of commanded
torque transferred from the electrically variable transmission and the
regenerative braking system to the vehicle driveline is controlled based
upon the commanded preselected shift selector position, the operator
demand for acceleration, and the measured vehicle acceleration.