Patent ID: 8033954

Claim:
A powertrain comprising: an engine having a crankshaft rotatable in a first direction and in a second direction; a controller configured to control the direction of rotation of the crankshaft; an electrically variable transmission having an input member operatively connected with the crankshaft and an output member for providing driving torque; wherein the output member rotates in a forward direction when the crankshaft rotates in the first direction and rotates in a reverse direction when the crankshaft rotates in the second direction for providing forward and reverse torque, respectively; a pump separate from the engine and operatively connected with the controller and drivingly connected with the crankshaft for providing a predetermined flow of fluid when the crankshaft rotates in the first direction; an electrically-actuated reversing valve in fluid communication between the crankshaft and the pump and operatively connected to the controller; and wherein the controller is configured to actuate the electrically-actuated reversing valve when the crankshaft rotates in the second direction, thereby maintaining the predetermined flow of fluid from the pump.