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US 2011/0212802 A1Published application
Highly configurable hybrid powertrain and control system therefor
AssigneeGM Global Technology Operations LLC
InventorsBrendan M. Conlon, Alan G. Holmes, Edward D. Tate, JR., Eric M. Rask
Life of this patent
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Abstract
A hybrid powertrain system for a vehicle includes an engine and a transmission. The transmission includes a transmission input member, first and second electric machines, first and second planetary gear sets, and a plurality of selectively engageable torque transfer devices enabling configuring the powertrain in variously to operate in electric drive, electrically variable, fixed gear and neutral charging operating states.
Claims8
A powertrain system for a vehicle, comprising:
- an engine;
- and
- a transmission including
- a transmission input member,
- first and second electric machines,
- a first planetary gear set including respective first, second and third gear members,
- a transmission case,
- a first selectively engageable torque transfer device between said first gear member of said first planetary gear set and said transmission case,
- a second selectively engageable torque transfer device between said first gear member of said first planetary gear set and said first electric machine,
- a third selectively engageable torque transfer device operable when engaged to connect said first electric motor and said transmission input member,
- a transmission output member connected to said second gear member of said first planetary gear set,
- said second electric machine connected to said third gear member of said first planetary gear set,
- a second planetary gear set including respective first, second and third gear members,
- said transmission input member connected to said first gear member of said second planetary gear set,
- said second gear member of said second planetary gear set connected to said first electric machine,
- said third selectively engageable torque transfer device between said third planetary gear set member and said transmission input member, and
- a fourth selectively engageable torque transfer device between said transmission input member and said transmission case.
14 more elements
A powertrain system for a vehicle, comprising:
- an engine;
- and
- a transmission including
- a transmission input member,
- first and second electric machines,
- a first planetary gear set including respective first, second and third gear members,
- a transmission case,
- a first selectively engageable torque transfer device between said first gear member of said first planetary gear set and said transmission case,
- a second selectively engageable torque transfer device between said first gear member of said first planetary gear set and said first electric machine,
- a third selectively engageable torque transfer device operable when engaged to connect said first electric motor and said transmission input member,
- a transmission output member connected to said second gear member of said first planetary gear set,
- said second electric machine connected to said third gear member of said first planetary gear set,
- a second planetary gear set including respective first, second and third gear members,
- said transmission input member connected to said first gear member of said second planetary gear set,
- said second gear member of said second planetary gear set connected to said first electric machine,
- said third selectively engageable torque transfer device between said third planetary gear set member and said transmission input member, and
- a fourth selectively engageable torque transfer device between said transmission input member and said engine.
14 more elements
Dependencies are inferred from the claim text.