Patent ID: 8234048
Filing Date: 2012-07-31
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A method for controlling a hybrid powertrain system including torque generative devices operative to transfer mechanical power to an output member, the powertrain system signally connected to an operator-selectable transmission range selector, the method comprising: monitoring an operator torque request via an accelerator pedal; monitoring rotational direction and speed of the output member; monitoring a signal output from the transmission range selector comprising a direction of intended motion; detecting an operator-commanded change in the direction of intended motion from a first direction to a second direction when the operator torque request is a non-zero value; commanding the powertrain system to change rotational direction of the output member and operating the powertrain system to transfer torque to the output member to achieve the operator torque request when the speed of the output member is less than a predetermined threshold; and inhibiting a change in the rotational direction of the output member when the speed of the output member is greater than the predetermined threshold.