Method and apparatus for simultaneous noise damping on intake an

Details Method and apparatus for simultaneous noise damping on intake an Method and apparatus for simultaneous noise damping on intake an

1979-05-04

1981-03-17

Coe, Philip R.

Pumps

Processes

417542, F04B 1100

Patent

active

042564387

ABSTRACT:
A method and apparatus are proposed for the simultaneous damping of noise on the intake and pressure sides of fluid pumps, particularly fuel supply pumps. The method comprises the diverting of peaks of variation in the supply medium from the intake and pressure sides and then bringing them together, in a common region, into operative contact under the control of a diaphragm. The peaks of variation are furthermore adjusted in such a manner, by means of the length of the connection lines surrounding them, for example, that a phase displacement of 180.degree. is produced in the variations for the purpose of mutual compensation of the pressure variations on both sides which cause the generation of noise.

REFERENCES:
patent: 2276568 (1942-03-01), Erickson
patent: 2811931 (1957-11-01), Everett
patent: 2951450 (1960-09-01), Fisher
patent: 3192864 (1965-07-01), Notte
patent: 4185455 (1980-01-01), Savkar

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