Patent ID: 6953409
Filing Date: 2005-10-11
Classification: B60K,B60W,F16H,Y02T

Abstract:
1. A two-mode compound split hybrid electro-mechanical transmission, comprising: an input member for receiving power from a prime mover power source; an output member for delivering power from the transmission; first and second motor/generators; an energy storage device for interchanging electrical power with said first and second motor/generators; a control unit for regulating the electrical power interchange between said energy storage device and said first and second motor/generators and also for regulating electrical power interchange between said first and second motor/generators; three coaxially aligned planetary gear arrangements, each planetary gear arrangement utilizing first, second and third gear members; said first and second motor/generators being coaxially aligned with each other and with said three planetary gear arrangements; at least one of said gear members in said first or second planetary gear arrangement connected to said first motor/generator; another one of said gear members in said second and third planetary gear arrangement being connected to said second motor/generator; a first torque-transmitting mechanism selectively connecting one of said gear members associated with each of said first, second and third planetary gear arrangements to each other and to said output member; a second torque-transmitting mechanism selectively connecting one of said gear members of said third planetary gear set with ground; a third torque-transmitting mechanism selectively connecting one of said gear members of said second planetary gear set with another of said gear members of said second planetary gear set; a first interconnecting member continuously connecting one of said members of said first planetary gear set with one of said members of said second planetary gear set; a second interconnecting member continuously connecting one of said members of said second planetary gear set with one of said members of said third planetary gear set; and one of said gear members of said first planetary gear arrangement being continuously connected to said input member.