Patent ID: 7278940
Filing Date: 2007-10-09
Classification: B60K,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A vehicle powertrain comprising: an engine including an engine output member, the engine being characterized by an on condition and an off condition; a transmission including a transmission input member continuously connected to the engine output member for rotation therewith, a transmission output member, a geartrain configured to selectively operatively interconnect the transmission input member and the transmission output member, and first and second motor/generators operatively connected to the geartrain to apply power thereto or receive power therefrom; a device sufficiently configured to selectively resist or prevent rotation of the transmission input member; and a control unit operatively connected to the device and configured to selectively cause the device to resist or prevent rotation of the transmission input member at least partially in response to the engine being in the off condition.