新型二冲程微型摆式内燃机预压缩室的结构优化  

Structure Optimization of the Pre-compressing Chamber for Novel Two-stroke Micro Free Swing Piston Engine

作　　者：贺向新[1] 郭志平[1] 张仕民[2] 张学文[1] 

机构地区：[1]内蒙古工业大学机械工程学院,内蒙古自治区呼和浩特010051 [2]中国石油大学机电工程学院

出　　处：《小型内燃机与摩托车》2009年第5期47-50,共4页Small Internal Combustion Engine and Motorcycle

基　　金：内蒙古自然科学基金重点资助项目(200508010702)

摘　　要：新型二冲程微型摆式内燃机(MFSPE)预压缩室的作用是对进入腔内的新鲜充量进行预压缩,使其在进入燃烧室时有一定的预压力,从而达到充分混合,以保证燃烧的适时性和充分性,以及提高扫气效率。本文通过运用FLUENT中的动网格模型对其在预压缩过程中的流场进行了分析,获取了场内流线的分布,并通过对预压缩室结构的优化改善了流线的分布,充分地利用了新鲜充量的流动惯性。The novel two-stroke micro free swing piston engine s pre-compressing chamber is to pre-compress the fresh charge,which will enter the combustion chamber with expected pre-pressure,so that the fuel will be burn timely and completely.Dynamic meshes model of the CFD software FLUENT is used in this paper.Through the analysis of the fluid field about the MFSPE s pre-compressing chamber,we obtained the distributing of the path lines.After Optimizing the structure of MFSPE s pre-compressing chamber,path lines were iraproved efficiently, so the flow inertia of fresh charge can be used adequately.

关 键 词：微型摆式内燃机 中心摆 动网格 计算流体动力学 

分 类 号：TK441.7[动力工程及工程热物理—动力机械及工程]