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US 6,662,890 B2Granted
Vehicle transmission with a fuel cell power source and a multi-range transmission
AssigneeGeneral Motors Corporation
InventorMichael Roland Schmidt
Life of this patent
Estimating the term…
Abstract
A vehicle powertrain includes a fuel cell power source, an electronic control unit, and an electrical energy storage and retrieval assembly, which are interconnected to communicate electrical power. The powertrain also includes a multi-range electro-mechanical transmission, which supplies driving power to the transmission output shaft and from there to the vehicle drive wheels and also supplies power to a power take-off drive unit, such that cooling airflow and hydraulic power is supplied to the vehicle.
Claims3
A powertrain comprising:
- a fuel cell power source;
- an electrical power storage and delivery means;
- an electronic control unit controlling power from said fuel cell power source to and from said electrical power storage and delivery means;
- a transmission output shaft;
- a power take-off output shaft;
- a first electric power transfer machine communicating with said electronic control unit to receive electrical energy from and deliver electrical energy to said electronic control unit;
- a second electric power transfer machine communicating with said electronic control unit to receive electrical energy from and deliver electrical energy to said electronic control unit;
- a first planetary gearset including a first member connected with said first electric power transfer machine, a second member continuously connected with said power take-off output shaft, and a third member continuously connected with said transmission output shaft;
- a second planetary gearset including a first member continuously connected with said second electric power transfer machine, a second member continuously connected with said transmission output shaft, and a third member;
- a first selectively engageable torque-transmitting mechanism connectible with said third member of said second planetary gearset to retard rotation thereof during both a reverse range of operation and a first forward range of operation;
- and
- a second selectively engageable torque-transmitting mechanism operatively interconnecting said third member of said second planetary gearset and said transmission output shaft during a second forward range of operation.
9 more elements
A powertrain comprising:
- a fuel cell power source;
- a battery assembly;
- an electronic control unit controlling power from said fuel cell power source and to and from said battery assembly;
- a transmission output shaft;
- a power take-off output shaft;
- a first electric motor/generator communicating with said electronic control unit to receive electrical energy from and deliver electrical energy to said electronic control unit;
- a second electric motor/generator communicating with said electronic control unit to receive electrical energy from and deliver electrical energy to said electronic control unit;
- a first planetary gearset including a planet carrier assembly member having a planet carrier member connected with said first electric motor/generator, a ring gear member continuously connected with said power take-off output shaft, and a sun gear member continuously connected with said transmission output shaft;
- a second planetary gearset including a sun gear member continuously connected with said second electric motor/generator, a planet carrier assembly member having a planet carrier member continuously connected with said transmission output shaft, and a ring gear member;
- a selectively engageable fluid-operated brake mechanism connectible with said ring gear member of said second planetary gearset to retard rotation thereof during both a reverse range of operation and a first forward range of operation;
- and
- a selectively engageable fluid-operated clutch mechanism operatively connectible between said ring gear member of said second planetary gearset and said transmission output shaft during a second forward range of operation.
9 more elements
Dependencies are inferred from the claim text.