Fuel supply system for internal combustion engines

Details Fuel supply system for internal combustion engines Fuel supply system for internal combustion engines

1990-06-28

1992-02-18

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123447, 123456, 123467, 123514, F02M 4100

Patent

active

050884638

ABSTRACT:
A fuel supply system for internal combustion engines wherein fuel is supplied to a fuel rail and, in turn, to fuel injectors which are electronically controlled to provide fuel to the cylinders of the engine including a fuel pressure regulator for controlling the pressure of fuel support to the fuel rail. A fuel bypass and damper device is provided upstream of the fuel pressure regulator and is operable to reduce the pressure of fluid in the fuel rail when the engine is shut off to provide a lower pressure in the fuel rail and bypass any excess fuel. The device further functions to dampen the noise when the engine is running. Such as system overcomes and fuel injection nozzles the problems of leakage of the injectors due to the high pressure retained in the system which in turn may produce long crank conditions, no start conditions, back fire conditions or high fuel emission conditions as well as engine noises.

REFERENCES:
patent: 3827409 (1974-08-01), O'Neill
patent: 4205637 (1980-06-01), Ito
patent: 4274380 (1981-06-01), de Vulpillieres
patent: 4300509 (1981-11-01), Schechter
patent: 4570600 (1986-02-01), Atkins
patent: 4729360 (1988-03-01), Fehrenbach
patent: 4756289 (1988-07-01), Rock
patent: 4782808 (1988-11-01), Bostick
patent: 4825835 (1989-05-01), Deweerdt

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