High-pressure fuel supply device for internal combustion engine

Details High-pressure fuel supply device for internal combustion engine High-pressure fuel supply device for internal combustion engine

1997-10-16

1999-06-15

Miller, Carl S.

Internal-combustion engines

Charge forming device

With fuel pump

123456, 92 86, F02M 3704

Patent

active

059112085

ABSTRACT:
The high-pressure fuel supply device for an internal combustion engine for pressurizing fuel to a high pressure and supplying the pressurized fuel to the internal combustion engine. The device includes: a fuel pressure chamber defined by a cylinder and a plunger disposed in the cylinder so as to reciprocate in the cylinder; a fuel flow passage for pumping out fuel from a fuel tank with a pump and sending the pumped fuel to the fuel pressure chamber; a check valve disposed in the fuel flow passage for permitting flow of the fuel only to the fuel pressure chamber; a fuel supply passage associating the fuel pressure chamber with the internal combustion engine for pressing the fuel in the fuel pressure chamber pressurized by reciprocation of the plunger into the internal combustion engine; a fuel spill passage associating the fuel pressure chamber with the fuel tank; and a fuel spill valve disposed in the fuel spill passage for changing a spill amount of fuel to be returned to the fuel tank by opening and closing the fuel spill valve, so as to regulate an amount of fuel to be pressed to flow from the fuel pressure chamber to the internal combustion engine.

REFERENCES:
patent: 3212448 (1965-10-01), Johnston
patent: 3742822 (1973-07-01), Talbert
patent: 4510908 (1985-04-01), Fisele
patent: 4776260 (1988-10-01), Vingze
patent: 5125807 (1992-06-01), Kohler
patent: 5230613 (1993-07-01), Hilsbos
patent: 5273017 (1993-12-01), Braun
patent: 5313924 (1994-05-01), Regueiro
patent: 5404855 (1995-04-01), Yen
patent: 5537980 (1996-07-01), Yamamoto

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