Hybrid Module for Interconnecting an Engine and a Dual-Clutch Transmission
First Claim
1. A hybrid module configured for interconnecting an engine and a dual-clutch transmission (DCT), said hybrid module comprising:
- a first carrier configured for being operatively connected to the DCT and rotatable about an axis at a first rotational velocity;
an electric motor configured for rotation about said axis at said first rotational velocity;
wherein said first carrier is operatively connected to said electric motor for common rotation therewith such that said first rotational velocity of said first carrier is transferred to the DCT;
a second carrier configured for being operatively connected to the engine and rotatable about said axis at a second rotational velocity;
a first clutch positioned on said axis and operatively interconnecting said first carrier and said second carrier;
wherein said first clutch is configured to overrun such that said first carrier rotates independent of said second carrier when said first rotational velocity of said first carrier is less than said second rotational velocity of said second carrier;
wherein said first clutch is configured to engage and lock rotation of said first carrier to said second carrier when said second rotational velocity is generally equal to said first rotational velocity such that said second carrier drives the rotation of said first carrier about said axis.
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0 Petitions
Accused Products
Abstract
A hybrid module interconnects an engine and a dual-clutch transmission (DCT). The hybrid module includes a first carrier, a second carrier, and a first clutch. The first carrier is operatively connected to the DCT and is rotatable about the axis at a first rotational velocity. The second carrier is operatively connected to the engine and is rotatable about the axis at a second rotational velocity. The first clutch surrounds the axis and operatively interconnects the first carrier and the second carrier. The first clutch overruns such that they rotate independently when the first rotational velocity of the first carrier is less than the second rotational velocity of the second carrier. The first clutch also engages and locks rotation of the carriers when the second rotational velocity is equal to the first rotational velocity such that the second carrier drives the rotation of the first carrier about the axis.
21 Citations
16 Claims
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1. A hybrid module configured for interconnecting an engine and a dual-clutch transmission (DCT), said hybrid module comprising:
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a first carrier configured for being operatively connected to the DCT and rotatable about an axis at a first rotational velocity; an electric motor configured for rotation about said axis at said first rotational velocity; wherein said first carrier is operatively connected to said electric motor for common rotation therewith such that said first rotational velocity of said first carrier is transferred to the DCT; a second carrier configured for being operatively connected to the engine and rotatable about said axis at a second rotational velocity; a first clutch positioned on said axis and operatively interconnecting said first carrier and said second carrier; wherein said first clutch is configured to overrun such that said first carrier rotates independent of said second carrier when said first rotational velocity of said first carrier is less than said second rotational velocity of said second carrier; wherein said first clutch is configured to engage and lock rotation of said first carrier to said second carrier when said second rotational velocity is generally equal to said first rotational velocity such that said second carrier drives the rotation of said first carrier about said axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hybrid powertrain for propelling a vehicle, said hybrid powertrain comprising:
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an engine; a dual-clutch transmission (DCT); a hybrid module interconnecting said engine and said DCT, said hybrid module including; a first carrier rotatable about said axis at a first rotational velocity, an electric motor configured for rotation about said axis at said first rotational velocity; wherein said first carrier is operatively connected to said electric motor for common rotation therewith such that said first rotational velocity of said first carrier is transferred to said DCT; a second carrier rotatably connected to said engine and rotatable about said axis at a second rotational velocity, a first clutch surrounding said axis and operatively interconnecting said first carrier and said second carrier; wherein said first clutch is configured to overrun such that said first carrier rotates about said axis independent of said second carrier when said first rotational velocity of said first carrier is less than said second rotational velocity of said second carrier; wherein said first clutch is configured to engage and lock rotation of said first carrier to said second carrier when said second rotational velocity is generally equal to said first rotational velocity such that said second carrier drives the rotation of said first carrier about said axis. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of operating a hybrid module to drive a dual-clutch transmission (DCT), said method comprising:
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operating an electric motor to rotate a first carrier and the DCT about an axis at a first rotational velocity; rotating a second carrier and an output of the engine about the axis at a second rotational velocity; overrunning a first clutch that interconnects the first carrier and the second carrier when the first rotational velocity is less than the second rotational velocity such that only the first carrier is driving the DCT about the axis; engaging the first clutch to lock the first carrier to the second carrier when the second rotational velocity is generally equal to the first rotational velocity such that the second carrier drives the rotation of the first carrier and the DCT about the axis. - View Dependent Claims (16)
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Specification