Device for controlling fuel injection into an internal combustio

Details Device for controlling fuel injection into an internal combustio Device for controlling fuel injection into an internal combustio

1999-08-09

2000-05-23

Miller, Carl S.

Internal-combustion engines

Starting device

With fuel or intake air control

123456, F02N 1700

Patent

active

060654368

ABSTRACT:
A device for controlling fuel injection into an internal combustion engine is disclosed. The device comprises an accumulator for supplying pressurized fuel to a fuel injection valve, a high-pressure pump for discharging fuel into the accumulator using the engine as a power source, and a low-pressure pump for discharging fuel into the high-pressure pump using a power source other than the engine. At the start of the engine, the fuel discharged from the low-pressure pump is substantially directly introduced into the accumulator through a pump chamber of the high-pressure pump. To elevate the pressure within the accumulator for a short period to a fuel pressure capable of injecting fuel at the start of the engine, an opening and closing valve is provided in a suction passage that communicates the discharge side of the low-pressure pump with the suction side of the high-pressure pump, and is maintained to be opened at the start of the engine.

REFERENCES:
patent: 5529042 (1996-06-01), Augustin
patent: 5598817 (1997-02-01), Igarashi
patent: 5642716 (1997-07-01), Ricco
patent: 5758622 (1998-06-01), Rebold
patent: 5794586 (1998-08-01), Oda
patent: 5911208 (1999-06-01), Furusawa
patent: 5918578 (1999-07-01), Oda

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