Effects of design parameters on cavitation in a solenoid valve for an electric vehicle braking system and design optimization
- Authors
- Ko, Seungbin; Song, Simon
- Issue Date
- Nov-2015
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Keywords
- Cavitation; Solenoid valve; Electric vehicle braking system; Design optimization
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.29, no.11, pp.4757 - 4765
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
- Volume
- 29
- Number
- 11
- Start Page
- 4757
- End Page
- 4765
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156009
- DOI
- 10.1007/s12206-015-1023-z
- ISSN
- 1738-494X
- Abstract
- Keeping pace with the current rapid development of clean energy, hybrid cars and electric vehicles are receiving extensive attention. In electronic control brake systems, which are essential to these vehicles, a solenoid valve is used to control the hydraulic pressure, which boosts the driver's braking force. However, strong cavitation occurs at the narrow gap between the ball and seat of a solenoid valve due to sudden decreases in pressure, leading to severe damage to the valve. In this study, we numerically investigate cavitation in a solenoid valve to discover geometric parameters that affect cavitation, and we develop an optimal design to minimize the cavitation using an optimization technique. As a result, we propose two design guides for the solenoid valve subject to cavitation: the ratio of the narrowest gap area to the inlet area and the narrow gap length. We also find that preventing a sudden reduction of a flow passage is important to reducing cavitation. Finally, using an evolutionary algorithm for optimization we minimize cavitation. The optimal design results in a maximum vapor volume fraction of 0.051, compared to 0.74 for the reference model.
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