Hydraulic noise reduction assembly with variable side branch

Abstract

A variable volume side branch is provided or attenuating fluid noise in a hydraulic system having a fluid pump and includes a variable volume fluid container having a fluid inlet and a fluid outlet. The fluid container is operable to change the volumetric thereof and to thereby attenuate fluid noise in a hydraulic system in response to changes in fluid pump speed. The fluid inlet of the variable volume fluid container is in fluid communication with a fluid pump and control of the fluid container volumetric is accomplished through the use of a speed sensor, a controller and various actuating mechanisms. The speed sensor determines fluid pump speed and transmits a signal indicative thereof to a controller coupled thereto. The controller is operable to receive an input signal from the speed sensor and to output an appropriate signal to the actuating mechanism to change the volumetric length of the fluid container in response to the input signal. This assembly optimally attenuates fluid noise in a hydraulic system which includes the present variable side branch.

Dependencies are inferred from the claim text.