Self-purging fuel supply system for internal combustion engines

Details Self-purging fuel supply system for internal combustion engines Self-purging fuel supply system for internal combustion engines

1977-03-09

1979-06-05

Croyle, Carlton R.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123DIG2, 210312, F02M 3700

Patent

active

041570820

ABSTRACT:
Water initially contained in fuel tends to separate out and accumulate at certain relatively low points in an engine fuel system. Automatic purging means are provided to remove such water continuously or intermittently without relying on periodic corrective actions by an operator. Purging conduit means are provided to connect the low point of one or more fuel chambers in the fuel system with lower-pressure regions so that accumulated water and a very small amount of the total fuel flow is withdrawn. One purging conduit may communicate the base of the fuel filter housing with a low-pressure point in the engine air intake such as the inlet of a turbocharger. Another purging conduit may connect a low point of the high-pressure region of the fuel pumping chamber with the fuel tank. Where insufficient flow is generated by the pressure differential at opposite ends of a purging conduit, a pumping device may be added and is preferably operated by some component, such as accelerator pedal linkage, that is already present on the engine and which is at least intermittently actuated in the normal course of engine operation.

REFERENCES:
patent: 1156592 (1915-10-01), Davis
patent: 2098391 (1937-11-01), Irvin
patent: 2215697 (1940-09-01), Hansen
patent: 2399994 (1946-05-01), Feagin
patent: 3019904 (1962-02-01), Stecher
patent: 3029594 (1962-04-01), Miller
patent: 3550776 (1970-12-01), Hamilton
patent: 3768659 (1973-10-01), Miller

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