US 7,537,075 B2
Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof
Charles L. Gray, Jr., Pickney, Mich. (US); and Daniel W. Barba, New Hudson, Mich. (US)
Assigned to The United States of America, as represented by the Administrator of the U.S. Environmental Protection Agency, Washington, D.C. (US)
Filed on Aug. 13, 2007, as Appl. No. 11/891,869.
Application 11/891869 is a division of application No. 10/769459, filed on Jan. 30, 2004, granted, now 7,337,869.
Application 10/769459 is a continuation in part of application No. 10/620726, filed on Jul. 15, 2003, granted, now 7,374,005.
Application 10/620726 is a continuation in part of application No. 09/479844, filed on Jan. 10, 2000, granted, now 6,719,080.
Prior Publication US 2007/0278027 A1, Dec. 06, 2007
Int. Cl. B60K 6/00 (2007.10); B60K 17/00 (2007.10); B60K 7/00 (2007.10); B60K 17/14 (2007.10)
U.S. Cl. 180—165  [180/305; 180/307; 180/308] 14 Claims
OG exemplary drawing
 
1. An integrated drive module for providing motive power to a vehicle, comprising:
a machine casing;
a hydraulic motor enclosed within the casing and configured to convert energy in the form of pressurized fluid to energy in the form of torque applied to an output shaft of the motor;
a multi-speed transmission enclosed within the casing an input thereof being coupled to the output shaft of the motor; and
a differential enclosed within the casing, coupled to an output shaft of the transmission and configured to distribute the torque to right and left drive axle segments of the vehicle.