Starter for engine equipped with motor generator

Details Starter for engine equipped with motor generator Starter for engine equipped with motor generator

1998-09-21

2000-01-25

Ponomarenko, N.

Prime-mover dynamo plants

Electric control

Electric-starting motor with generator

1231793, F02N 1100

Patent

active

060181990

ABSTRACT:
A starter for an engine equipped with a motor generator achieves lower cost and reduced sizes and capacities of circuit elements by reducing the assist load on the motor generator: it is provided with a motor generator (2) and a starting motor (10) connected to an engine (1); a startup state determining circuit (20) which determines the startup state from operating condition and selectively issues ON signals M1 and M2 to the motor generator and the starting motor; a key switch (6) which generates a start signal (Qe) at the time of starting the engine; and a temperature sensor 12 which generates a temperature signal (Te) corresponding to the temperature of the engine. The startup state determining circuit actuates only the motor generator as a motor in a startup state wherein the temperature signal indicates not less than a predetermined temperature corresponding to the warm-up state of the engine, while it actuates both the starting motor and the motor generator in a startup state wherein the temperature signal indicates a temperature below the predetermined temperature. And the startup state determining circuit actuates the starting motor first, then actuates the motor generator after a delay time corresponding to a rush current period of the starting motor has elapsed in the second startup state.

REFERENCES:
patent: 4495905 (1985-01-01), Morishita et al.
patent: 4862009 (1989-08-01), King
patent: 4959595 (1990-09-01), Nishimura
patent: 5075616 (1991-12-01), Mitsui
patent: 5111057 (1992-05-01), Sugiyama
patent: 5563454 (1996-10-01), Araki et al.
patent: 5642696 (1997-07-01), Matsui
patent: 5818115 (1998-10-01), Nagao

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