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http://dx.doi.org/10.20910/JASE.2018.12.5.54

Effect of Check Valve Characteristics on Flow Rate of the Small Piezoelectric-Hydraulic Pump  

Nguyen, Anh Phuc (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Hwang, Jai-Hyuk (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Hwang, Yong-Ha (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Bae, Jae-Sung (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.12, no.5, 2018 , pp. 54-68 More about this Journal
Abstract
The objective of this study is to analyze the effect of dynamic characteristics of the check valve applied to the small piezoelectric-hydraulic pumps on flow rate formation. The flow rate of the piezoelectric-hydraulic pump is a key factor in the formation of the load pressure to operate the brake system. At this time, the natural frequency of the check valve operating in the fluid has a great influence on the formulation of the flow rate of the piezoelectric-hydraulic pump. In addition, the natural frequency of the check valve is affected by the gap between the check valve and the pump seat. In this study, the natural frequency of the check valve according to the gap between the check valve and the pump seat was calculated through the fluid-structure interaction analysis. The flow rate obtained from the simulation result was verified by comparing it with the result from the flow rate experiment using the developed piezoelectric-hydraulic pump.
Keywords
Check efficiency; Check valve; Piezoelectric-hydraulic pump; FSI analysis;
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