某发动机缸盖水套气蚀故障分析  

Cavitation Fault Analysis of Engine Cylinder Head Water Jacket

作　　者：梁彦勇 李飞 杨文乐 陈佳 

机构地区：[1]海马轿车有限公司

出　　处：《内燃机与配件》2015年第7期38-40,共3页Internal Combustion Engine & Parts

摘　　要：某款发动机在开发初期,道路试验过程中出现排气冒白烟的现象,拆机查看后,认定是冷却液在缸盖内流动分布不合理引起发动机局部过热,进而缸盖局部形成核态沸腾,导致缸盖水套气蚀剥落,发动机冷却水进入燃烧室,出现排气冒白烟。本文针对水套冷却液流动分布不合理这一因素,运用仿真计算预测水套冷却液的流动分布,并为此水套进行优化设计,为问题的解决提供参考依据。Engine occur white smoke phenomenon in the road testing, after disassembling engine, we found that refrigerant unreasonable flow distribution in cylinder head induce engine local overheat, local cylinder head form nucleate boiling, so cylinder head water jacket cavitation strip, engine refrigerant inter into combustion chamber, appearing white smoke in the exhaust side. This paper use simulation calculation to forecast flow distribution of water jacket refrigerant, optimize water jacket, offer reference for solving problem.

关 键 词：发动机 缸盖水套 气蚀 CFD计算分析 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程]