Patent ID: 7690455

Claim:
A hybrid driving unit, comprising: an input shaft for inputting motive power from an internal combustion engine; an output shaft disposed on an axis in line with said input shaft and interlocking with driving wheels; a first electric motor disposed on said axis and comprising a first stator and a first rotor; a power splitting planetary gear disposed on said axis and comprising a first rotary element coupled with said input shaft, a second rotary element coupled with said rotor of said first electric motor and a third rotary element coupled with said output shaft; a second electric motor disposed on said axis and comprising a second stator and a second rotor; and a transmission disposed on said axis and shifting and transmitting revolution of said second rotor of said second electric motor to said output shaft, wherein: said first electric motor, said power splitting planetary gear, said second electric motor and said transmission are stored in a casing member while being disposed in line on said axis; said first and second stators of said first and second electric motors, respectively, are fixed to said casing member; said casing member is provided, at a front end thereof, with a coupling section fixed to said internal combustion engine and at a rear end thereof, with a mounting section supported by a vehicle body; said second electric motor is disposed in a rearmost part with respect to said power splitting planetary gear, said first electric motor, and said transmission disposed along said axis in said casing member; said second rotor of said second electric motor is coupled only with said transmission; and a driving torque of said second electric motor is transmitted with said output shaft only via said transmission.