초록 ▼

A system for cranking/starting a combustion engine and for generating electrical power during engine operation uses an inverter-driven, high efficiency permanent magnet synchronous machine as a cranking/starting motor during a start mode and as an alternator during a run mode. A modified planetary g

A system for cranking/starting a combustion engine and for generating electrical power during engine operation uses an inverter-driven, high efficiency permanent magnet synchronous machine as a cranking/starting motor during a start mode and as an alternator during a run mode. A modified planetary gear assembly provides sufficient torque multiplication during the start mode to enable the synchronous machine to start the engine. One-way clutches allow the planetary gear assembly to provide the torque multiplication in the start mode and 1:1 coupling between the engine crankshaft and the shaft of the synchronous machine after the engine has been started and is operating.

대표청구항 ▼

A system for engine cranking/starting and for providing electrical power during engine operation, comprising: a dynamoelectric machine having a shaft, a rotor mounted to said shaft, and a stator; a combustion engine having rotatable means adapted to be rotated by said machine when the engine is to b

A system for engine cranking/starting and for providing electrical power during engine operation, comprising: a dynamoelectric machine having a shaft, a rotor mounted to said shaft, and a stator; a combustion engine having rotatable means adapted to be rotated by said machine when the engine is to be started and further adapted to be rotated by the engine during engine operation; and a gear assembly connecting said shaft to said rotatable means, said gear assembly comprising a first clutch and a second clutch; said system being operable in: I. a start mode in which rotation of said rotor is initiated and maintained in rotation in a given direction by application of electrical energy to said stator such that said dynamoelectric machine operates as a motor and drives said rotatable means through said gear assembly, such that said first clutch responds to being driven by said machine by engaging in the start mode and said second clutch responds to being driven by said machine by disengaging in the start mode, said gear assembly having a gear ratio to provide torque multiplication in the start mode; and II. a run mode in which said rotatable means drives said rotor in said given direction through said gear assembly such that said dynamoelectric machine operates as a generator with said stator supplying electrical power, such that said second clutch responds to being driven by said rotatable means by engaging in the run mode and said first clutch responds to being driven by said rotatable means by disengaging in the run mode, said gear assembly having a gear ratio in the run mode which is different than its gear ratio in the start mode.