Abstract: This paper deals with the design criterion of Helhotize-type and more-orifice-resonance-type hydraulic muffler, and the method of determining the optimum position at which the muffler is installed in the hydraulic system. The influence of parameter of system on attenuation characteristic of muffler is discussed.

Key words: 液压泵, 液压脉动控制, 液压消声器