Electrically-variable transmission for a vehicle

US8758179B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• John A. Diemer · Farmington Hills, US
• Pete R. Garcia · Troy, US
• Douglas John Dwenger · Plymouth, US
• Boris Burgman · Oak Park, US
• Robert J. Gonzales · Clarkston, US
• Kent A. Miller · Pinckney, US

Key dates

• Filing date: Oct 22, 2012
• Grant date: Jun 24, 2014
• Expiry date: Jan 30, 2033

Classification

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

Abstract

An electrically-variable transmission for a vehicle is disclosed. The transmission includes an input member and an output member each rotatable about a first axis. The transmission includes a casing defining a cavity between a first end wall and a second end wall. The transmission includes a first motor/generator and a second motor/generator disposed in the cavity with a second planetary gear set disposed between the first and second motor/generators along the first axis. The transmission includes a first torque-transmitting mechanism disposed between the first and second motor/generators along the first axis. The transmission includes a second torque-transmitting mechanism disposed between the first end wall and the first motor/generator along the first axis. The first motor/generator is disposed between the first and second torque-transmitting mechanisms along the first axis. The transmission includes a damper mechanism disposed between the second end wall and a first planetary gear set along the first axis.