小缸径增压直喷汽油机燃烧系统开发  

Combustion System Development of Small-Bore TGDI Engine

作　　者：张沛毅 王东荣 李红洲 颜平涛 田志松 张育春 ZHANG Peiyi;WANG Dongrong;LI Hongzhou;YAN Pingtao;TIAN Zhisong;ZHANG Yuchun(Ningbo Geely Royal Engine Components Co.Ltd.,Ningbo,Zhejiang,315336,China)

机构地区：[1]宁波吉利罗佑发动机零部件有限公司,浙江宁波315336

出　　处：《小型内燃机与车辆技术》2023年第1期28-31,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：高性能、低油耗、低排放的增压直喷汽油机开发目标对燃烧系统的设计提出了更高的要求。介绍了基于CFD仿真分析和试验的小缸径增压直喷汽油机燃烧系统开发。对进气道、燃烧室、喷油器油束布置等与燃烧系统相关的因素进行了优化和匹配,对优化后的流量系数、滚流强度、湍动能水平、活塞顶和气缸套油膜量、过量空气系数(Lambda)进行了评估,并对优化后的燃烧系统进行了气道试验和性能试验验证。结果表明,优化后的燃烧系统达到了产品开发目标。The TGDI engine target including high performance and low fuel consumption and low emission need high requirement of combustion system design.The combustion system development of small-bore TGDI engine is introduced based on CFD simulation and experiment.The intake port and cylinder head chamber with injector plumes layout are optimized and matched.The flow coefficient and tumble ratio,turbulent kinetic energy level and wallfilm on the piston and liner,and the excess air ratio(Lambda)in cylinder are assessed after optimization.The engine performance development target is achieved with optimized combustion system based on the intake port and engine test bench experiment.

关 键 词：CFD 增压直喷汽油机 滚流 燃烧系统 

分 类 号：TK413.2[动力工程及工程热物理—动力机械及工程]