Patent ID: 7238132
Filing Date: 2007-07-03
Classification: B60K,F16H,Y02T,Y10S

Abstract:
1. An electrically variable transmission comprising: an input member to receive power from an engine about a primary axis; an output member connected to a transfer member rotatably supported on a transfer bearing for transmitting power to a secondary axis; first and second motor/generators; first and second gear sets each having first, second and third members, said first gear set being a compound planetary gear set and said second gear set being a simple planetary gear set; said input member being continuously connected to said first member of said first gear set, and said output member being continuously connected to said first member of said second gear set; said first motor/generator being continuously connected to said second member of said first gear set; said second motor/generator being continuously connected with said third member of said first or second gear set; a first torque transfer device selectively grounding said second member of said second gear set; a second torque transfer device selectively connecting said second member of said second gear set to said first electric motor/generator; a third torque transfer device selectively connecting said first and third members of said first gear set; wherein said third member of said first gear set is selectively or continuously connected with said third member of said second gear set; and wherein said transfer member and transfer bearing are positioned between said first and second motor/generators.