发动机气门导管材料与缸盖结构匹配应用分析  

Matching application analysis of engine valve guide material with cylinder head structure

作　　者：李斌 闫珊珊 郑世魁 席时文 唐忠刚 LI Bin;YAN Shanshan;ZHENG Shikui;XI Shiwen;TANG Zhonggang(State Key Laboratory of Engine Reliability,Weifang 261061,Shandong,China;Weichai Power Co.,Ltd.,Weifang 261061,Shandong,China)

机构地区：[1]内燃机可靠性国家重点实验室,山东潍坊261061 [2]潍柴动力股份有限公司,山东潍坊261061

出　　处：《柴油机设计与制造》2023年第3期44-48,共5页Design and Manufacture of Diesel Engine

摘　　要：针对大功率发动机为提升功率、扭矩,以及排放升级所带来的高排温、高排气侧向力的问题,探究气门导管材料升级方案,并分析气门导管材料与缸盖结构的匹配,以降低排气门与气门导管摩擦副的磨损量。将提出的3种气门导管材料升级方案分别应用在Ⅰ型和Ⅱ型结构缸盖上进行发动机耐久验证。结果表明:300℃气门导管、Ⅱ型结构缸盖匹配高硬度材料C时,气门导管磨损量可减小33%;400℃及以上气门导管、Ⅰ型结构缸盖匹配高导热材料B时,气门导管磨损量可减小49%。To address the issues of high exhaust temperature and high exhaust lateral force caused by high-power engines increasing power and torque,as well as emission upgrades,the upgrading plan of valve guide material was explored,and the matching between valve guide material and cylinder head structure was analyzed to reduce the wear of exhaust valve and valve guide friction pairs.The three up-grading schemes of valve guide materials were applied to the typeⅠand typeⅡstructural cylinder heads for engine durability verification.The results show that when the valve guide at 300℃ and the typeⅡstructure cylinder head are matched with high hardness material C,the wear of the valve guide de-creases by 33%.When the valve guide at 400℃ above and typeⅠstructure cylinder head are matched with high thermal conductivity material B,the wear of the valve guide decreases by 49%.

关 键 词：气门导管 缸盖 排温 材料 磨损 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]