Fuel pump driving apparatus

Details Fuel pump driving apparatus Fuel pump driving apparatus

1987-09-16

1989-05-09

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

417200, 417365, 388836, F02M 3900

Patent

active

048278971

ABSTRACT:
In a fuel pump driving apparatus for a vehicle engine including a fuel injection system, the selection of a plurality of energizing circuits each formed by the combination of two or all of three brushes of a fuel pump drive motor is effected in accordance with the load conditions of the engine, thereby changing the rotational speed of the motor and hence the fuel quantity delivered from the fuel pump. When the occurrence of a fault in one of the energizing circuits is detected, the driver is informed of the occurrence of the fault and in addition a faulty-condition controller controls switching means in such a manner that the drive motor is energized through another one of the energizing circuits.

REFERENCES:
patent: 3310722 (1967-03-01), Diello
patent: 3497788 (1970-02-01), Kerrigan
patent: 3536974 (1970-10-01), Beigl
patent: 3611094 (1971-10-01), Bischoff
patent: 4013053 (1977-03-01), Dinkelkamp
patent: 4485788 (1984-12-01), Hofbauer
patent: 4586877 (1986-05-01), Watanabe
patent: 4791905 (1988-12-01), Furuta

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