Patent ID: 7338401
Filing Date: 2008-03-04
Classification: B60K,B60W,F16H,Y02T,Y10S

Abstract:
1. An electrically variable transmission comprising: first and second motor/generators; first, second and third differential gear sets, each having first, second and third members, said first and second motor/generators being continuously connected to respective ones of said differential gear sets and controllable to provide power thereto; a plurality of torque-transmitting mechanisms; an input member to receive power from a power source and being continuously connected to a member of one of said differential gear sets; an output member continuously connected to another member of one of said differential gear sets; and said plurality of torque-transmitting mechanisms being selectively engageable to transfer power received by said input member from said power source through said differential gear sets to provide an input-split, electrically variable first mode having a forward and reverse range with respective equal forward and reverse speed ratios for given input speeds and to provide substantially equal fixed forward and fixed reverse speed ratios.