韩艳艳

（奇瑞汽车股份有限公司 动力总成技术中心,安徽 芜湖  241009）

    摘要：为解决增压直喷发动机功率高密度、高排温带来的气门室罩盖烧结融化的问题，采用仿真分析排气系统对气门室罩盖的温度影响，设计多种方案解决气门室罩盖烧结问题,最终通过实验验证并解决问题。结果表明，采用仿真手段对温度场进行风险规避可以提前规避问题，节省时间，快速解决问题。

    关键词：气门室罩盖;热辐射计算;方案选择;发动机台架温度场实验;隔热罩 Hypermesh;CCM+

    Abstract: In order to solve the sintering and scorification of the engine valve cover in the high-density and high discharge temperate TGDI engine, the effect of exhaust system on the engine cover temperature was analyzed through simulation, and a variety of schemes are designed to solve the problem of engine cover, Finally the problem was validated through test and solved. The result show that, Using the Hypermesh and CCM+ software can avoid sintering in advance , thus save time and solve problems quickly.

    Key words: engine cover;heat radiation calculation; scheme selection;engine heat test;heat shield hypermesh; CCM+