Control system for fuel pump for internal combustion engine

Details Control system for fuel pump for internal combustion engine Control system for fuel pump for internal combustion engine

1984-09-28

1986-03-25

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123358, F02M 1900

Patent

active

045776040

ABSTRACT:
A fuel pump control system controls the operating speed of the fuel pump to control the fuel pressure in a fuel supply circuit for a internal combustion engine. The control system includes a main control circuit constantly connecting a fuel pump driver to a vehicle battery which acts as a power source and a normally-open auxiliary circuit. The main control circuit adjusts the power supply to the fuel pump driver to adjust the operating speed of the fuel pump to either a first maximum or a second minimum speed. The auxiliary circuit establishes electrical communication between the fuel pump driver and the battery when a demand for increasing of the fuel pressure in the supply line and thus for enrichment of the air/fuel mixture beyond a predetermined value is detected on the basis of one or more preselected engine operating parameters.

REFERENCES:
patent: 3587545 (1971-06-01), Ballou
patent: 3822677 (1974-07-01), Reddy
patent: 3967598 (1976-07-01), Rachel
patent: 4096830 (1978-06-01), Long
patent: 4430980 (1984-02-01), Pidgeon

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