满足欧ⅲ法规江铃493zq柴油机电控高压共轨燃油系统优化匹配研究.pdf

摘要本课题研究电控共轨燃油系统与发动机的匹配优化,通过漪匿喷射,同时结合柴油机自身的结构参数调整,使Jx493ZQ柴油机能满足欧III扫t放法规和使用要求。主要羚震以下几方灏竣工作; 1)对JX493ZQ榘油机摊放现状进行分析,综合考虑喷油器结构参数和燃浇室和气流运动对性能和排放的影响,通过分析和试验使喷油嘴孔数和喷孔直径以及喷射建发与燃烧室秘气流运动密切配合,确定凝佳的发动老盹燃烧室尺寸、避气涡流和喷油器结构参数。 2)在发动机各硬件(涡轮增压器、·谶气道、燃油系统)确定蜃,研究不问工况黠静暌淡压力,喷濂提藏恁,澍发动极缝能秘捺藏鲍影镌,撮器接放和燃淮经济惶优化各工况躺喷油提前角,喷油珏力。通过大量的发动机台架试验表明:通过电控系统与柴油机的良好匹配,可以在满足动力性和经济性要薅乏的同时,大幅度地降低柴油机的排放,满足欧Ⅲ排放法矮夔要采。关链诞:浆潴极,摊敬,避气涡流,电控共辕系绫,商压喷射 Abstract 髓e research of an electro啦catly controlled nlon raitFaej injection system match for a directinjection diesel was performed inthispaper. JX493ZQ diesel can meet the requirement for Euro m emiSSions and using demands byUSing ahigh pressure COlPalOrl rail fuel injection system and adjusting parameters of the diesel. The main works include: 1、The emissions andperformance oforiginalJx493ZQ dieseland theinfluence of intakeswirl,nozzle geometric sizes mad parameters bustion bowl on emissions and performance in this diesel%vere investigated。The pression ratio,intake swiri and nozzle geometric sizes were decided by analysis and engine test. 2)After deciding the ponents of theengine(swirl,FIS),the optimization oftheESC cycle interms ofemission and ruelconsumption starts. 髓e parameters offuelinjection system including蝎ection pressure and injection time were optimized for the goal of lowcr emission and ruel consumption atevery run conditions. The resultofexperiments show that也e diesel carlmeet therequirement for Euro Ill emissions legislation by equipped an electronically controlled mon railruelinjection system and matehed thefuelsystem and diesel well. Writtenby:Wang YuHui Directed by:Gao GuoZhen mon rail、high pressure injection、intake swirl、emission、diesel 独创性声明本人声明所星交的学饺论文是本人谯导师指导下进行的研究工作及取得的研究成卷。据我所知,除了文中特别加以标注魏致谢的地方外,论文孛不包含焚稳入已经发表躐撰写遘豹磷究残莱,遣不镶岔为获褥奄鑫夫学凌其缝教窍瓤构的学位或证秘丽使用过的材料。与我一间工作的同惑对本研究所做的任何贯献均已在论文中{擘了明确的说明并表示谢意。学位做作者虢崤搏然字吼跏6年衫月哆日学位论文版权使用授权书奉学毽论义俸者竞全了解斋鑫文学有关绦窝、镬霜学校论文懿趱定, 帮权保翳并向弱家有关部门媛机构送交论文的复印传糨磁盘,允许论文被查阅和储灏。零入授权南品文学W以将学位论文的全部或部分内容编入谢关数据库避嚣羧素,霹菝慕爨影翠、绥露或爨攒等簦豢《手段保存、汇编擎链论文。