Cross loop attenuator for hydraulic systems

Details Cross loop attenuator for hydraulic systems Cross loop attenuator for hydraulic systems

1984-01-23

1987-02-10

Garrett, Robert E.

Pumps

With muffler acting on pump fluid

417542, 138 26, F04B 1100

Patent

active

046420355

ABSTRACT:
A vehicle hydraulic fluid system includes an engine driven pump which excites the fluid in the system downstream of the pump by imparting pressure pulses thereto at frequencies which vary as the speed of the engine, and hence, the pump varies. For the purpose of inhibiting the transmission of these pulses through the system and thereby lessening noise caused by the radiation of the pulses by components in the system, a cross loop attenuator is coupled in the system adjacent the pump outlet. The attenuator comprises a simple hose or tube having its opposite ends coupled to opposite sides of a cross fitting having its other two sides coupled in a line leading from the pump outlet.

REFERENCES:
patent: 2258469 (1941-10-01), Podolsky
patent: 3061039 (1962-10-01), Peters
patent: 3134611 (1964-05-01), Iversen
patent: 3532124 (1970-10-01), Lowery
patent: 3660979 (1972-05-01), Kamakura et al.
patent: 3916948 (1975-11-01), Benjamin
J. S. Noss, "Can You Hear the Hydraulic System?", 9/17/70, pp. 143 and 144.

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