Internal-combustion engines – Charge forming device – With fuel pump
Patent
1997-09-16
1999-08-17
Miller, Carl S.
Internal-combustion engines
Charge forming device
With fuel pump
123478, 12317917, F02M 3704
Patent
active
059378298
ABSTRACT:
A fuel pump drive apparatus for a fuel injection equipment for an internal combustion engine capable of satisfactorily driving a fuel pump for a fuel injection equipment without being affected by a variation in a voltage across a battery. A magneto driven by the internal combustion engine is provided with a battery charging coil and a pump drive coil. An output of the pump drive coil is fed to a pump drive motor through a pump drive circuit including a voltage regulator. A diode is connected between a positive output terminal of a battery charging circuit and a positive output terminal of a pump drive circuit, so that a current is fed from the battery through the diode to the pump drive motor only when a voltage across the battery is higher than an output voltage of the pump drive circuit. The voltage regulator of the pump drive circuit has an adjustment value set to be higher than a maximum value of the voltage across the battery.
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Kokusan Denki Co. Ltd.
Miller Carl S.
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