Patent ID: 8221284

Claim:
An automotive drive apparatus comprising: an engine; an electric motor-generator that has a generating function and an electric motor function; a first auxiliary machine; and a first power transmitting means that performs power transmission among a crank shaft of said engine, a rotating shaft of said electric motor-generator, and a rotating shaft of said first auxiliary machine, wherein: said first power transmitting means has: a crank pulley that is mounted to said crank shaft of said engine; a first electric motor-generator pulley that is mounted to said rotating shaft of said electric motor-generator; a first auxiliary machine pulley that is mounted to said rotating shaft of said first auxiliary machine; a first belt that is wound around said crank pulley, said first electric motor-generator pulley, and said first auxiliary machine pulley; and a first one-way clutch that is interposed between said rotating shaft of said electric motor-generator and said first electric motor-generator pulley so as to transmit a rotational driving force from said crank shaft of said engine to said rotating shaft of said electric motor-generator without transmitting a rotational driving force from said rotating shaft of said electric motor-generator to said crank shaft of said engine; and said electric motor-generator comprises a driving portion for generator operation and a control portion for selectively implementing motor operation whereby the electric motor generator is selectively motor driven and is selectively used as a brake while said engine is being driven, said selective use resulting in reduced differences between rotational frequencies of the engine and other components.