Studies on the Characteristics of Axial Plunger Pumps and Motors : 2nd Report, Ripples in Oil Hydraulic Systems Composed of the Pump and the Motor

概要

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A theoretical and experimental investigation of the ripples of pipe-line pressures, shaft torques and rotational speeds in oil hydraulic systems where an axial plunger pump and motor are connected by a pipe-line and where a motor is connected to an accumulator is reported. The method to decide the trapping period and the relief groove to reduce the resonant ripples is derived from investigating the effect of the trapping phenomena of the pump and the motor on these repples for the former system. And the effects of system parameters on the latter system are made clear by defining the minimum stable rotational speed of the motor. Experimental and theoretical results coincide with each other qualitatively but not well quantitatively because it is impossible to measure the dynamic characteristics of components of the experimental apparatus correctly.
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