Patent ID: 7169073
Filing Date: 2007-01-30
Classification: B60K,F16H,Y02T

Abstract:
1. A powertrain having an electrically variable transmission comprising: a prime mover; a first motor/generator unit; a second motor/generator unit; a stationary transmission housing; first and second selectively engageable torque-transmitting mechanisms; first, second, and third planetary gearsets each having first, second, and third members; an input shaft interconnecting said prime mover with a first member of said second planetary gearset and a first member of said first planetary gearset; said second member of said second planetary gearset being continuously interconnected with said first motor/generator unit and selectively connectible with said second member of said first planetary gearset through said second selectively engageable torque-transmitting mechanism; said third member of said second planetary gearset being continuously interconnected with said second motor/generator unit; said first member of said third planetary gearset being continuously connected with said second motor/generator unit; said second member of said third planetary gearset being continuously drivingly connected with a transmission output; said third member of said third planetary gearset being selectively connectible with said transmission housing through said first torque-transmitting mechanism; and said first and second torque-transmitting mechanisms being selectively engaged to provide a first mode of transmission operation and a second mode of transmission operation respectively.