某型号柴油机进气道流动特性的仿真研究  

Simulation Study on Inlet Flow Characteristics of a Diesel Engine

作　　者：戢茗 庞华廷 赵永兴 朱江宁[3] JI Ming;PANG Hua-ting;ZHAO Yong-xing;ZHU Jiang-ning(School of Automobile and Traffic Engineering,Liaoning University of Technology,Jinzhou 121001,China;Wuxi Wolffu Automotive Technology Co.,LTD,Wuxi 214000,China;Department of Mathematics and Computer,Liaoning Chaoyang Normal College,Chaoyang 122000,China)

机构地区：[1]辽宁工业大学汽车与交通工程学院,辽宁锦州121001 [2]无锡沃尔福汽车技术有限公司,江苏无锡214000 [3]辽宁朝阳师范高等专科学校数学计算机系,辽宁朝阳122000

出　　处：《辽宁工业大学学报（自然科学版）》2023年第6期367-371,共5页Journal of Liaoning University of Technology(Natural Science Edition)

基　　金：横向科研课题(03112073)。

摘　　要：为研究柴油机的进气流动特性,通过流体动力学计算分析气门升程对进气流动特性的影响规律,利用AVLFire软件对进气流动过程进行了模拟,计算得到流量系数、涡流比以及流场的速度分布。研究结果表明,当气门升程增大时,进气道的流量系数和涡流比均随气门升程的增加而增大,并且随着气流速度锋面的扩散,缸内形成的气流涡团会从气门流动间隙附近向四周发展。In order to study the inlet flow characteristics of diesel engines and analyze the influence of valve lift on the inlet flow characteristics,AVL Fire software was used to simulate the inlet flow process,and the flow coefficient,eddy current ratio and velocity distribution of flow field were calculated.The results show that when the valve lift increases,the flow coefficient and eddy current ratio of the inlet increase with the increase of the valve lift,and with the diffusion of the air velocity front,the air vortex group formed in the cylinder will develop from the vicinity of the valve flow clearance to the surrounding.

关 键 词：柴油机 进气道 流动特性 涡流比 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]