Effect of back pressure on nozzle inner flow in fuel injector
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- 作者：Tao Qiua ; b ; qiutao@bjut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Xin Songa ; Yan Leia ; Hefei Daia ; Chunlei Caoc ; Hui Xua ; Xiang Fenga
- 关键词：Injection back pressure ; Cavitation ; Nozzle ; Fuel injection ; Diesel engine
- 刊名：Fuel
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：173
- 期：Complete
- 页码：79-89
- 全文大小：3496 K
文摘
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As the back pressure drops, the cavitation process is divided into 3 periods.
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During choking period, the back pressure has little effect on the mass flow.
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During choking period, the discharge coefficient declines as the back pressure drops.
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During choking period, the interface between the liquid and mixing section is constant.
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During choking period, the outlet velocity increases as the back pressure drops.