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US 11,639,748 B1Granted
Electrified propulsion system and apparatus
AssigneeGM Global Technology Operations LLC
InventorsChengwu Duan, Dongxu Li, Jian Yao, Chunhao J. Lee, Norman K. Bucknor
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Abstract
An electrified drivetrain system that improves drivability is described. It includes a propulsion system having a rotary electric machine including a rotatable shaft, a torque converter including a fluidic stator, a pump, a turbine and a normally-closed torque converter clutch; a selectable one-way clutch coupled to the fluidic stator; and an output member. The rotatable shaft is coupled to the pump of the torque converter, and the turbine of the torque converter is coupled to the output member.
Claims5
A propulsion system, comprising:
- a rotary electric machine including a rotatable shaft;
- a torque converter, including a fluidic stator, a pump, a turbine and a normally-closed torque converter clutch;
- a selectable one-way clutch coupled to the fluidic stator;
- and
- an output member rotatably coupled to a drivetrain;
- wherein the rotatable shaft is coupled to the pump of the torque converter;
- wherein the turbine of the torque converter is coupled to the output member;
- wherein the selectable one-way clutch is coupled between the fluidic stator and a stationary frame member;
- wherein the selectable one-way clutch is controllable to couple the fluidic stator to the stationary frame member in a first rotational direction when the propulsion system is operated in a forward direction to provide torque-multiplication between the rotary electric machine and the drivetrain in the first rotational direction;
- and
- wherein the selectable one-way clutch is controllable to couple the fluidic stator to the stationary frame member in a second rotational direction opposite to the first rotational direction when the propulsion system is operated in a reverse direction to provide torque-multiplication between the rotary electric machine and the drivetrain in the second rotational direction.
8 more elements
Dependencies are inferred from the claim text.