福州大学学报（自然科学版）Issue(4)：500-505,6.DOI:10.7631/issn.1000-2243.2015.04.0500
柴油机气道进气流动特性及进气门杆形状对其影响分析
Research on inlet flow characteristics in diesel engine and the impact of the shape of the intake valve stem on the inlet flow characteristics
摘要
Abstract
The stead-state CFD simulations model of a RD190 diesel engine in helical inlet ports was established and the flow characteristics were studied.The swirl ratio of cylinder, the flow coefficient of intake ports and the engine performance were calculated.Meanwhile, The influence of the shape of the intake valve stem on inlet flow characteristics in diesel engine was analyzed with the three-dimension-al CFD simulation platform.The results indicate that the average flow coefficient and average swirl ra-tio increase first and then decrease with section ratio increasing.The average flow coefficient change a little in relative to the value of the original program with the section ratio in range of 0.28 to 0.3, and the maximum increase of the average swirl ratio is 9 .98%.关键词
柴油机/螺旋进气道/进气门杆/涡流比Key words
diesel engine/helical intake port/intake valve stem/swirl ratio分类
能源科技引用本文复制引用
杨志锋,桂佳林,朱光宇..柴油机气道进气流动特性及进气门杆形状对其影响分析[J].福州大学学报（自然科学版）,2015,(4):500-505,6.基金项目
福州市科技计划项目（2012－G－131）；福建省教育厅科技项目 （）
