US 7,520,354 B2
Hybrid vehicle with combustion engine/electric motor drive
Jon J. Morrow, Neenah, Wis. (US); and Christopher K. Yakes, Oshkosh, Wis. (US)
Assigned to Oshkosh Truck Corporation, Oshkosh, Wis. (US)
Filed on May 02, 2002, as Appl. No. 10/137,585.
Prior Publication US 2003/0205422 A1, Nov. 06, 2003
Int. Cl. B60K 1/00 (2006.01)
U.S. Cl. 180—65.4  [180/271] 54 Claims
OG exemplary drawing
 
1. A work vehicle comprising:
an engine;
a first generator coupled to the engine;
a drive shaft coupled to the engine;
a drive axle coupled to the drive shaft;
first and second wheel ends coupled to the drive axle;
first and second wheels coupled to the associated first and second wheel ends;
a wheel end drive assembly coupled to at least one wheel end, the wheel end drive assembly comprising:
an electric motor powered by the first generator,
a planetary gearset having a first input coupled to the drive axle, a second input coupled to the electric motor, and an output;
a second generator mechanically coupled to the engine;
a drive control unit configured to control the engine and the electric motor and to generate a control signal based upon at least one of torque and speed requirements of the work vehicle; and
a central tire inflation system coupled to the drive control unit and configured to regulate tire pressure based at least in part upon the control signal.