Electronically controlled fuel pump

Details Electronically controlled fuel pump Electronically controlled fuel pump

1982-09-30

1984-05-29

Lazarus, Ira S.

Internal-combustion engines

Charge forming device

Fuel injection system

123459, F02M 3900

Patent

active

044507836

ABSTRACT:
The disclosure illustrates an electronically controlled fuel pump in which a bypass valve regulates its output pressure to a predetermined level above a control pressure. A downstream throttling valve re-regulates the pressure to a predetermined level below a control pressure. The control pressure is established by an electro-hydraulic valve which is, in turn, fed with signals with a microprocessor to provide appropriate control. The use of the control pressure in effect causes a servo action and utilizes the pressure of the fuel to manipulate the valve and minimize the power requirement of the electro-hydraulic valve.

REFERENCES:
patent: 2727503 (1955-12-01), Reiners
patent: 2749897 (1956-06-01), Reiners
patent: 2997034 (1961-08-01), Lee
patent: 3119381 (1964-01-01), Cummins, Jr.
patent: 3598097 (1971-08-01), Eheim et al.
patent: 3927654 (1975-12-01), Perr
patent: 4381751 (1983-05-01), Maisch et al.

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