Internal combustion engine starting circuit

Details Internal combustion engine starting circuit Internal combustion engine starting circuit

1977-04-06

1978-10-24

Schaefer, Robert K.

Prime-mover dynamo plants

Electric control

Starting and generating dynamo

290 46, 123179B, H02K 2352

Patent

active

041223543

ABSTRACT:
An internal combustion engine starting circuit for a system including a combination direct current motor generator unit having an armature coil and field coil in series therewith to be connected to a source of direct current to function as a starter motor when the ignition switch is first closed and to function as a generator when the internal combustion engine starts to bring the motor generator unit to generating speed is provided with a starting solenoid to be energized to close a contact for connecting the motor generator unit to the source when energized. An ignition switch is adapted to be closed to complete a circuit through one coil of a double coil starting relay having a normally open contact to be closed to energize the starter solenoid in series with the ignition switch and the source. The other coil of the starting relay is connected in parallel to the series field of the motor generator to thereby be energized to buck the field of the one coil and automatically open the starter relay contact to deenergize the starter solenoid when the engine has started and the motor generator unit reaches generating speed.

REFERENCES:
patent: 1087950 (1914-02-01), Jones et al.
patent: 1396309 (1921-11-01), Young
patent: 1790635 (1931-01-01), Arendt
patent: 2307364 (1943-01-01), Elkin
patent: 2806962 (1957-09-01), Quantz

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