Current limiting circuit for fuel pump motor

Details Current limiting circuit for fuel pump motor Current limiting circuit for fuel pump motor

1988-12-14

1990-09-11

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

4174231, 310 68C, F04B 1700, F04B 3504

Patent

active

049557904

ABSTRACT:
A motor-driven fuel pump comprising a pumping unit, a brushless electric motor for driving the pumping unit, a control circuit for controlling power supply to the brushless motor and a pump casing for encasing the pumping unit, the brushless motor and the control circuit. The control circuit comprises a current limiting circuit which inhibits flow to the brushless motor of a current above an amperage which is higher than an amperage of a normal operating current and lower than an amperage of a current which would flow at starting of the brushless motor without the current limiting circuit.

REFERENCES:
patent: 4403177 (1983-09-01), Weber et al.
patent: 4472666 (1984-09-01), Akeda et al.
patent: 4726746 (1988-02-01), Takada et al.

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