彭辉，苏茂辉，张甲乐，卢瑞军，蔡文远

（浙江吉利新能源商用车研究院有限公司，浙江 杭州 311200）

摘要：甲醇作为重要的车用发动机替代燃料，其排放性能和燃烧热效率一直是行业内关注的热点。为研究法规工况下甲醇发动机的排放性能及燃烧热效率分布，通过在一台自主研发的重型M100甲醇发动机上进行了重型汽油机瞬态循环(GB14762-2008)和ETC循环(GB17691-2005)试验。研究结果表明：M100甲醇发动机的排放污染物值远低于现有法规限值；发动机燃烧热效率与同等排量的其它燃料发动机相当；重型汽油机瞬态循环下的排放性能优于ETC循环，而平均燃烧热效率稍差。

关键词：M100甲醇发动机；重型汽油机循环；ETC循环；排放性能；燃烧热效率

Abstract：Methanol as an important automotive engine alternative fuels, its emission performance and combustion thermal efficiency has always been a hot spot in the industry. To study methanol engine emissions performance and distribution of combustion thermal efficiency under working conditions according to regulations, based on a self-developed heavy M100 methanol engine, the heavy gasoline engine transient cycle (GB14762-2008) and ETC cycle test (GB17691-2005) was carried out. The results show that M100 methanol engine emissions is far below current regulation limits, and has almost the same combustion thermal efficiency of other fuel engines with equal displacement, emission performance of the heavy gasoline engine transient cycle is superior to the ETC cycle, with the average thermal efficiency slightly worse.

Key words: M100 methanol engine; heavy gasoline engine transient cycle; ETC cycle; exhaust emission performance; combustion thermal efficiency