The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Nov. 15, 2011
John C. Schultz, Saline, MI (US);
Daryl A. Wilton, Macomb, MI (US);
John C. Schultz, Saline, MI (US);
Daryl A. Wilton, Macomb, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS, LLC, Detroit, MI (US);
Abstract
A hybrid drive system in a vehicle includes a prime mover, a starting device connected to the prime mover, and a transmission having a transmission input shaft connected to the starting device. A pump/motor is functionally interconnected between the starting device and the transmission. A first accumulator is in fluid communication with the motor/pump for storing a hydraulic fluid under pressure and a second accumulator is in fluid communication with the pump/motor for storing hydraulic fluid discharged from the first accumulator. Discharge of the first accumulator drives the pump/motor to provide a drive torque to the transmission input shaft and to provide a drive torque to the prime mover for starting the prime mover.