유공압시스템학회논문집 (Transactions of The Korea Fluid Power Systems Society)
- 제1권3호
- /
- Pages.7-13
- /
- 2004
- /
- 1738-3315(pISSN)
사축식 유압 피스톤 펌프의 저속 마찰 특성 개선
Improvement of the Low-speed Friction Characteristics of a Bent-Axis Type Hydraulic Piston Pump
초록
The hydraulic pump for a Electro-hydrostatic Actuator for aircrafts should be able to quickly feed large volume of oil into hydraulic cylinder in order to reduce the response time. On the other hand, it should be also able to precisely dispense small amount of oil by low-speed operation so that the steady state position control error of the EHA can be accurately compensated. This paper is focused on the investigation how the plasma coating surface treatment of cylinder barrel with CrSiN can contribute to the reduction of low-speed friction torque of a bent-axis type piston pump. The results showed that the reduction of the friction torque was not remarkable, but that the anti-wear characteristics of the CrSiN-coated cylinder barrel were much better that those of the original one.
키워드