Fuel pump with integral accumulator

Details Fuel pump with integral accumulator Fuel pump with integral accumulator

1985-03-04

1986-02-18

Croyle, Carlton R.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417540, F04B 3504, F04B 1100

Patent

active

045711593

ABSTRACT:
A motor driven fuel pump assembly has an integral accumulator. The fuel pump is a two-stage pump with the secondary stage being a positive displacement unit such as a roller vane pump. The fluid output of the secondary pump is connected with a space surrounding the drive motor for the pump. The space is defined partially by a resilient membrane which is operable to expand with pressure increases and thereby absorb and damp the pressure and flow fluctuations from the secondary stage pump. The membrane member effectively provides a moving wall of an accumulator which serves to provide the damping effect on the flow and pressure variations within the system.

REFERENCES:
patent: 2734462 (1956-02-01), Schaefer
patent: 4181473 (1980-01-01), Ira
patent: 4521164 (1985-06-01), Tuckey

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