内燃机工程2017，Vol.38Issue(1)：88-93,6.DOI:10.13949/j.cnki.nrjgc.2017.01.015
旋流式进气系统性能分析及设计方法
Performance Analysis and Design Method of Whirl-Type Inlet System
摘要
Abstract
The air flow characteristics in the whirl-type inlet system of a domestic heavy commercial vehicle were studied and its visualization was made.Through the simulation of rear side flow field of a moving vehicle cab, it is discovered that there is a stable pressure region outside the vehicle body, in which the inner pressure is lower than the outer pressure, and the air flow has a tendency to flow inward.A right angle design at the top of the main duct of lateral inlet pipe can cause whirl flow in this area, which makes the flowability of air flow worse, while the fillet transition design can make the flow of airflow smoothly without whirl flow.Compared with the four-blade cyclone, the central low-pressure area of six-blade cyclone is relatively large, and the movement trend of internal particles is basically consistent with that of the in-pipe pressure distribution, and there is no particle area at the center while the particle-rotation area is relatively thin and closer to the wall.The shutter can provide the best particle-obstructing performance in the fully closed state of front projection.关键词
内燃机/商用车/进气系统/流动特性/数值模拟/旋流管/两相流Key words
IC engine/commercial vehicle/inlet system/flow characteristics/simulation/swirl-type tube/two phase flow分类
能源科技引用本文复制引用
王磊,马建,杨志刚,张文博,侯峨明..旋流式进气系统性能分析及设计方法[J].内燃机工程,2017,38(1):88-93,6.基金项目
国家"八六三"高技术研究发展计划项目(2012AA111106) （2012AA111106）
