Approach to integrating a starter-generator with an automatic transmission
First Claim
Patent Images
1. A power train for a motor vehicle, comprising:
- an internal combustion engine;
a starter/generator having a rotor;
a torque converter having an input impeller, an output turbine, and a stator having a housing;
a transmission pump having a cover and being directly connected to the rotor such that the pump can receive power directly from the rotor;
a transmission input directly connected to the output turbine of the torque converter;
a selectively engageable clutch disposed between the starter/generator and the internal combustion engine;
the internal combustion engine being operatively connected to the input impeller of the torque converter; and
the rotor of the starter/generator being operatively connected to the input impeller of the torque converter.
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Abstract
A transmission having a starter/generator that is not mounted on the engine crankshaft is provided. The starter/generator is drivingly or directly connected to a transmission pump, and can selectively engage a torque converter and/or an internal combustion engine. The invention allows for efficient disengagement of the engine when the vehicle is stopped, and reengagement upon subsequent torque demand.
80 Citations
19 Claims
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1. A power train for a motor vehicle, comprising:
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an internal combustion engine;
a starter/generator having a rotor;
a torque converter having an input impeller, an output turbine, and a stator having a housing;
a transmission pump having a cover and being directly connected to the rotor such that the pump can receive power directly from the rotor;
a transmission input directly connected to the output turbine of the torque converter;
a selectively engageable clutch disposed between the starter/generator and the internal combustion engine;
the internal combustion engine being operatively connected to the input impeller of the torque converter; and
the rotor of the starter/generator being operatively connected to the input impeller of the torque converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. A power train for a motor vehicle, comprising:
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an internal combustion engine;
a torque converter having an input impeller, an output turbine, and a stator;
a transmission pump;
a transmission input directly connected to the output turbine of the torque converter;
a starter/generator operatively connected to both the transmission pump and the input impeller;
the internal combustion engine being operatively connected to the input impeller of the torque converter; and
a clutch disposed between the starter/generator and the internal combustion engine for providing selective driving of the input impeller by the starter/generator and the internal combustion engine. - View Dependent Claims (16, 17, 18, 19)
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Specification