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US 7,681,675 B2Granted
Hybrid drive powertrains with reduced parasitic losses
AssigneeGM Global Technology Operations LLC
InventorsFarzad Samie, Joel M. Maguire
Life of this patent
Estimating the term…
Abstract
An apparatus for reducing parasitic losses in a hybrid electric powertrain of a vehicle includes a drivetrain, an electric motor, and a connecting mechanism operative to selectively engage and disengage the drivetrain and the electric motor.
Claims15
An apparatus for reducing parasitic losses in a hybrid electric powertrain of a vehicle, comprising:
- a drivetrain comprising a first axle, a second axle and a differential including a pinion carrier, wherein said differential is operative to transfer torque between said first axle and said second axle;
- an electric motor;
- and
- a connecting mechanism operative to selectively engage said drivetrain and said electric motor, said connecting mechanism comprising a selectable one-way clutch which when activated provides for one-way torque transfer from the electric motor to the pinion carrier.
1 more element
A method for reducing parasitic losses in a hybrid electric powertrain, comprising:
- engaging an electric motor and a drivetrain when said electric motor is in use;
- and
- disengaging said electric motor and said drivetrain when said electric motor is not in use;
- wherein said drivetrain comprises a first axle, a second axle and a differential including a pinion carrier;
- and
- wherein said engaging comprises activating a clutch mechanism providing for torque transfer when activated between the electric motor and the pinion carrier.
3 more elements
Dependencies are inferred from the claim text.