Power device for internal combustion engine

Details Power device for internal combustion engine Power device for internal combustion engine

1995-12-29

1998-02-03

Stephan, Steven L.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

322 29, H02P 944

Patent

active

057148716

ABSTRACT:
A power device for an internal combustion engine is disclosed, which includes a rectification power section equipped with a voltage regulator and using an AC magneto driven by the internal combustion engine as a power supply therefor, a switch circuit including at least one MOSFET acting as a switching element and adapted to carry out short circuit between output terminals of the AC magneto, and an FET control circuit for repeatedly subjecting the MOSFET to on-off operation when an output voltage of the rectification power section is at a set level or below and keeping the MOSFET turned off when the output voltage exceeds the set level. The MOSFET is subjected to on-off operation during a low speed operation of the internal combustion engine to boost an output voltage of the AC magneto, to thereby provide a voltage for driving a load. On-off operation of the MOSFET is interrupted when an output voltage of the rectification power section exceeds the set level, so that loss due to switching of the MOSFET is reduced.

REFERENCES:
patent: 4382222 (1983-05-01), Kurtz et al.
patent: 4459536 (1984-07-01), Wirtz
patent: 4780619 (1988-10-01), Campbell et al.
patent: 4811185 (1989-03-01), Cook et al.
patent: 5448154 (1995-09-01), Kanke et al.
patent: 5543703 (1996-08-01), Kusase et al.

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