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US 2006/0154772 A1Published application
Powertrain with electrically variable transmission
AssigneeGeneral Motors Corporation
InventorsMichael Schmidt, Donald Klemen, Alan Holmes
Life of this patent
Estimating the term…
Abstract
A hybrid powertrain incorporates an engine, two motor/generator units and three planetary gearsets along with three torque-transmitting mechanisms to provide a two-mode compound-split electrically variable transmission.
Claims5
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.
11 more elements
Dependencies are inferred from the claim text.