On Characteristics of Regulator System in Hydraulic Piston Pump

유압 피스톤 펌프 레귤레이터 시스템 특성 연구

  • 여명구 (전북대학교 대학원 정밀기계공학과) ;
  • 김종기 (전북대학교 대학원 정밀기계공학과) ;
  • 정재연 (전북대학교 기계공학부, 자동차신기술연구소)
  • Published : 2000.11.01

Abstract

The importance of variable displacement piston pump is recently increasing in industrial applications, as it is widely used for raising the energy level of the fluid in hydraulic system. The regulator is the device that controls the pump output flow depending on the machine load and engine speed, and that regulates the discharge flow of the piston pump by controlling the swivel angel. This work deals with constant power control of a regulator system in bent-axis type piston pump. In order to use engine power effectively, it is important to keep the horsepower from the engine to the pump constant. Therefore, optimum power usage is obtained by accurately following the power hyperbola. First, the governing equations of the regulator are derived, and analysis is performed by numerical simulation in which significant parameters of regulator are identified. Also, we designed and manufactured the prototype of the constant power control regulator for experiments. The experimental results show the responsibility and pressure-flowrate characteristics and these are compared with the theoretical analysis. As the result, it is confirmed that the characteristics of the designed regulator correspond to the numerical simulation.

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