摘要
进气管作为进气系统中的一部分,对多缸发动机的进气不均匀性有重要的影响.进气管内的流动损失和压力波动是影响各缸进气不均匀的主要原因.文中采用AVL F IRE软件建立EQD 180N-20型发动机进气管的三维仿真模型,并进行了稳态和瞬态流动模拟计算.根据计算得到的流场,对引起进气不均匀性的原因进行了分析,计算了进气不均匀度,对进气不均匀性进行了评价.
As a part of air intake system, intake manifolds have great effects on the distribution non-evenness of multi-cylinder engines. The flow resistance and kinetic effect in intake manifolds are two main factors of distribution non-evenness. In this paper, the three-dimensional numerical model of the intake manifold of EQ D180N-20 engine is built with AVL FIRE, and steady simulation and transient simulation are performed. According to the calculated flow characteristics, the cause of the induction distribution non-evenness is analyzed. The distribution non-evenness of the intake manifolds is appraised by calculating.
出处
《武汉理工大学学报（交通科学与工程版）》
2006年第6期1008-1010,1014,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目资助(批准号:50275109)
关键词
发动机
进气管
三维流动
数值模拟
进气不均匀性
engine
intake manifold
three-dimensional flow
numerical simulation
distribution nonevenness
