Combined electric starter and alternator system using a permanen

Details Combined electric starter and alternator system using a permanen Combined electric starter and alternator system using a permanen

1988-03-22

1989-08-29

Shoop, Jr., William M.

Prime-mover dynamo plants

Electric control

Traction

290 31, F02N 1104

Patent

active

048620092

ABSTRACT:
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.

REFERENCES:
patent: 2451767 (1948-10-01), Nardone
patent: 2466427 (1949-04-01), Hoover
patent: 3175095 (1965-03-01), Denniston
patent: 4005347 (1977-01-01), Erdman
patent: 4257281 (1981-03-01), Bunger
patent: 4335318 (1982-06-01), Mabuchi et al.
patent: 4456830 (1984-06-01), Cronin
patent: 4464576 (1984-08-01), Williams
patent: 4473752 (1984-09-01), Cronin
patent: 4616166 (1986-10-01), Cooper et al.

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