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차량 브레이크 밸브 시스템에서 공동현상을 최소화하기 위한 수치해석 및 최적설계

Title
차량 브레이크 밸브 시스템에서 공동현상을 최소화하기 위한 수치해석 및 최적설계
Other Titles
Numerical Analysis and Optimal Design to Minimize Cavitation of Vehicle Brake Valve System
Author
송시몬
Keywords
전자 제어 브레이크 시스템; 솔레노이드 밸브; 공동현상; 최적설계; Electronic control brake system; Solenoid valve; Cavitation; Optimal design
Issue Date
2012-11
Publisher
대한기계학회 / The Korean Society of Mechanical Engineers
Citation
대한기계학회 춘추학술대회, 2012, 2012(11), P.1248-1250, 3P.
Abstract
In electronic control brake system which is essential to hybrid cars of electric vehicles, a solenoid valve isused to control hydraulic pressure of an oil flow that boosts driver’s braking force. However, due to a narrow flow gap between the ball and seat of the valve the flow velocity is extremely high leading to severe cavitation and consequent damage on the valve. Here, we numerically investigate the effects of valve geometrical parameters on the cavitation and suggest an optimal valve design to minimize the cavitation. Numerical results show that critical parameters affecting cavitation include contact diameter, gap length, and area ratio of minimum gap to inlet and cavitation number can be used to evaluate cavitation strength.In addition, the optimum valve design obtained by using an optimization technique shows 94 % reduction in cavitation in terms of maximum vapor volume fraction as compared to a reference valve model.
URI
http://www.dbpia.co.kr/Article/NODE02111867http://hdl.handle.net/20.500.11754/54218
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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