Hybrid vehicle system
First Claim
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1. A hybrid motor vehicle, comprising:
- an engine having a rotary output;
transmission having a rotary input and a rotary output connected to a first axle assembly having a first pair of wheels;
a first clutch for selectively coupling said engine output to said transmission input for providing driving torque to said first pair of wheels;
an electric motor having a rotary member connected to a second axle assembly having a second pair of wheels;
a transfer unit driven by said engine output;
a second clutch for selectively coupling said transfer unit to said rotary member of said electric motor;
a third clutch for selectively coupling said rotary member of said electric motor to said second axle assembly; and
a hybrid control unit for controlling selective actuation of said electric motor and said first, second and third clutches, such that an electric drive mode is established when said first and second clutches are released, said third clutch is engaged and said electric motor provides drive torque to said second axle assembly for driving said second pair of wheels.
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Abstract
A hybrid vehicle system is provided with an internal combustion engine driving one set of wheels and an electric motor connected to the other wheels via an active clutch system. A power take-off unit is provided for selectively providing driving torque from the internal combustion engine to the electric motor to operate the motor in a regenerative operating mode. The active clutch system is selectively engaged and disengaged based upon whether the vehicle is operating in an internal combustion engine operating mode, an electric motor operating mode, a combined electric motor and internal combustion engine operating mode, or a regenerative operating mode.
87 Citations
29 Claims
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1. A hybrid motor vehicle, comprising:
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an engine having a rotary output;
transmission having a rotary input and a rotary output connected to a first axle assembly having a first pair of wheels;
a first clutch for selectively coupling said engine output to said transmission input for providing driving torque to said first pair of wheels;
an electric motor having a rotary member connected to a second axle assembly having a second pair of wheels;
a transfer unit driven by said engine output;
a second clutch for selectively coupling said transfer unit to said rotary member of said electric motor;
a third clutch for selectively coupling said rotary member of said electric motor to said second axle assembly; and
a hybrid control unit for controlling selective actuation of said electric motor and said first, second and third clutches, such that an electric drive mode is established when said first and second clutches are released, said third clutch is engaged and said electric motor provides drive torque to said second axle assembly for driving said second pair of wheels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A four-wheel drive hybrid vehicle, comprising:
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a first pair of wheels;
a second pair of wheels;
an engine;
a power transfer unit driven by said engine;
a first clutch for selectively connecting said engine to said first pair of wheels;
an electric motor;
a second clutch for selectively connecting said power transfer unit to said electric motor; and
a third clutch for selectively connecting said electric motor to said second pair of wheels, and wherein an electric drive mode is established when said first and second clutches are released and said third clutch is engaged such that said electric motor drives said second pair of wheels. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A hybrid drive system, comprising
an engine; -
a power transfer unit directly driven by said engine;
a first axle assembly having a first pair of wheels;
an electric motor;
a first clutch for selectively transmitting drive torque from said engine to said first axle assembly;
a second clutch for selectively connecting said power transfer unit to said electric motor;
a second axle assembly having a second pair of wheels;
a third clutch for transferring drive torque from said electric motor to said second axle assembly; and
a control unit for controlling operation of said engine and said electric motor and selective actuation of said first, second and third clutches, and wherein an electric drive mode is established when said first and second clutches are released and said third clutch is engaged such that said electric motor drives said second pair of wheels. - View Dependent Claims (19)
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20. A hybrid motor vehicle, comprising:
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an engine having a rotary output;
a transmission having a rotary input and a rotary output connected to a first axle assembly having a first pair of wheels;
a first clutch for selectively coupling said engine output to said transmission input for providing driving torque to said firs pair of wheels;
an electric motor having a rotary member connected to a second axle assembly having a second pair of wheels;
a transfer unit driven by said engine output;
a second clutch for selectively couplings said transfer unit to said rotary member of said electric motor;
a third clutch for selectively coupling said rotary member of said electric motor to said second axle assembly; and
a hybrid control unit for controlling selective actuation of said electric motor and said first, second and third clutches, whereby a hybrid drive mode is established when said first and third clutches are engaged and said second clutch is released such that said engine transmits drive torque to said first pair of wheels while said electric motor transmits drive torque to said second pair of wheels.
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21. A four-wheel drive hybrid vehicle, comprising:
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a first pair of wheels;
a second pair of wheels;
an engine;
a power transfer unit driven by said engine;
a first clutch for selectively connecting said engine to said first pair of wheels;
an electric motor;
a second clutch for selectively connecting said power transfer unit to said electric motor; and
a third clutch for selectively connecting said electric motor to said second pair of wheels, and wherein a hybrid drive mode is established when said first and third clutches are engaged and said second clutch is released such that said engine drives said first pair of wheels and said motor drives said second pair of wheels. - View Dependent Claims (22, 23, 24, 25)
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26. A hybrid motor vehicle, comprising:
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a front axle assembly having a pair of front wheels;
a rear axle assembly having a pair of rear wheels;
an engine;
a transmission driving said rear axle assembly;
a power transfer unit operably disposed between said engine and said transmission and having an input member driven by said engine for rotatively driving an output member;
an electric motor having a rotary motor shaft;
a first clutch operable for selectively coupling said transmission to said engine for transmitting engine drive torque to said rear axle assembly;
a second clutch operable for selectively coupling said motor shaft to said output member of said power transfer unit;
a third clutch operable for selectively coupling said motor shaft to said front axle assembly for transmitting motor drive torque to said front axle assembly; and
a hybrid control system for controlling actuation of said clutches and said electric motor so as to establish one of an electric drive mode and an engine drive mode. - View Dependent Claims (27, 28, 29)
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Specification