Fuel pump

Details Fuel pump Fuel pump

1975-05-02

1977-03-22

Cox, Ronald B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123138, 123139AU, 417199A, 417200, F02M 3900

Patent

active

040130533

ABSTRACT:
An electric-motor-powered centrifugal fuel pump including a vacuum control device to achieve the initial priming of the centrifugal pump. The electric motor which drives a centrifugal impeller is housed within the pump itself and, as such, is immersed in the fuel being pumped. An associated filter bowl incorporates a float valve, thus becoming a filter and float bowl which controls the vacuum so that when the fuel level reaches a predetermined point, the float valve rises and engages its valve seat, thus shutting off the vacuum source. A secondary ball valve is also provided in the vacuum line so that, in the event of the vehicle's overturning, this ball valve will close the vacuum line and prevent gravitational fuel flow to the vacuum source. When the vacuum draws sufficient fuel into the centrifugal pump cavity, the centrifugal impeller is then capable of discharging this fuel under pressure through the filter to an outlet port that is connected to the carburetor. Furthermore, once the centrifugal impeller is so primed, it will sustain the prime. A check valve is provided in the fuel suction line to prevent gravitational draining of the pump during shutdown.

REFERENCES:
patent: R16406 (1926-08-01), Barton
patent: 1760313 (1930-05-01), Morgan
patent: 1860688 (1932-05-01), Muzzy
patent: 3591316 (1971-06-01), Piccirilli

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