Self-contained electric fuel pump with output pressure regulatio

Details Self-contained electric fuel pump with output pressure regulatio Self-contained electric fuel pump with output pressure regulatio

1987-11-30

1988-12-06

Neils, Paul F.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417366, 200 82E, 338 32H, F04B 4906, F04B 1700, H01H 3538

Patent

active

047893087

ABSTRACT:
A self-contained electric fuel pump includes a pair of coaxially spaced inlet and outlet end caps joined by a case to form a pump housing. A d.c. motor includes an armature journaled for rotation within the housing and coupled to a pump mechanism for feeding fuel through the housing from the inlet to the outlet, fuel within the housing surrounding the armature being at substantially outlet pressure. A pressure sensor comprises a magnetic piston slideable against adjustable spring force within a bore in the outlet end cap as a function of fuel pressure within the pump housing. A Hall sensor is responsive to varying magnetic field as a function of piston position for applying electrical power to the pump armature as a function of pump outlet pressure.

REFERENCES:
patent: 2716381 (1955-08-01), Parker
patent: 2717553 (1955-09-01), Parker
patent: 3327079 (1967-06-01), Widl
patent: 3418991 (1968-12-01), Shultz et al.
patent: 3431375 (1969-03-01), Hotchkiss
patent: 3711222 (1973-01-01), Hartley
patent: 4349814 (1982-09-01), Akehurst
patent: 4447192 (1984-05-01), Tuckey
patent: 4581941 (1986-04-01), Obermann et al.
patent: 4691185 (1987-09-01), Lowbier et al.

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