Patent ID: 8113976
Filing Date: 2012-02-14
Classification: B60K,B60L,B60W,F16H,H02K,H02P,Y02T

Abstract:
1. A power plant for driving a driven part, comprising: an internal combustion engine having an output shaft, said output shaft being connected to the driven part; a first transmission connected between said output shaft of said engine and the driven part, for changing speed of power from said engine and transmitting the power to the driven part; and a generator-motor including an immovable stator for generating a rotating magnetic field, a first rotor provided in a manner opposed to said stator and formed of a magnet, and a second rotor disposed between said stator and said first rotor and formed of a soft magnetic material, for inputting and outputting energy between said stator and said first rotor and said second rotor via a magnetic circuit formed according to generation of the rotating magnetic field, the rotating magnetic field and said first and second rotors rotating along with the input and output of the energy while holding such a linear speed relationship in which a difference between a rotational speed of the rotating magnetic field and a rotational speed of said second rotor, and a difference between a rotational speed of said second rotor and a rotational speed of said first rotor become equal to each other, wherein one of said first and second rotors of said generator-motor is connected between said output shaft of said engine and said first transmission, and the other thereof is connected to the driven part.