Fuel pump control apparatus

Details Fuel pump control apparatus Fuel pump control apparatus

1987-06-24

1989-01-31

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

With fuel pump

123459, 123463, 123494, F02M 3708, F02M 3902

Patent

active

048008591

ABSTRACT:
A vehicle fuel pump control apparatus controls the operating speed of a fuel pump to adjust the quantity of fuel forced to at least one fuel injector. When the required fuel quantity of the engine which is based on its operating condition is determined to be greater than a reference level predetermined in correspondence to the operating condition, the pump operating speed is increased, whereas the pump operating speed is decreased when the required fuel quantity is determined smaller than the reference level. When an insufficient fuel supply is detected during the low speed operation, the reference level is updated or readjusted to a lower level in such a manner that the required fuel quantity is determined greater than the corrected level.

REFERENCES:
patent: 4205648 (1980-06-01), Graham
patent: 4248194 (1981-02-01), Drutchas
patent: 4426978 (1984-01-01), Sasaki et al.

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