8-Speed hybrid transmission architectures

US8152682B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Shawn H. Swales · Canton, US
• Joel M. Maguire · Northville, US
• Andrew W. Phillips · Saline, US
• Clinton E. Carey · Cadillac, US
• James B. Borgerson · Clarkston, US
• Donald L. Dusenberry · Farmington Hills, US
• James M. Hart · Belleville, US
• Scott H. Wittkopp · Ypsilanti, US

Key dates

• Filing date: Sep 16, 2008
• Grant date: Apr 10, 2012
• Expiry date: Sep 11, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The hybrid powertrain has a plurality of members that can be utilized to provide eight forward speed ratios and one reverse speed ratio in a hybrid transmission architecture. The transmission includes three planetary gear sets having five torque-transmitting devices and four fixed interconnections. The powertrain includes an engine, a damper, a pump, an engine disconnect clutch, and a drive motor, all operatively connected with the transmission to provide strong hybrid operating capability.