内燃机工程2018，Vol.39Issue(2)：48-52,58,6.DOI:10.13949/j.cnki.nrjgc.2018.02.008
稀燃条件下甲醇汽油发动机燃烧和排放特性的试验研究
Experimental Study on Combustion and Emission Characteristics of a Lean Burn Engine Fueled with Methanol/Gasoline
摘要
Abstract
The combustion and emission characteristics of a GDI turbocharged engine fueled with different methanol/gasoline blends respectively were investigated under lean burn conditions.Results show that under lean burn conditions,the equivalent fuel consumption tends to decrease first and then increase with the mixture concentration getting thinner.It will increase with the rise of methanol/gasoline ratio,but lower than the original.In the process of the mixture getting thinner,the peak cylinder pressure and combustion temperature decrease,while the combustion duration and cycle-to-cycle variability gradually increase,Under lean burn conditions,the CO emissions tend to decrease and the HC emissions decrease first and the increase,while the NOx emissions increase first and then decrease,and will decrease with the increase of the volume fraction of methanol.Moreover,when the engine operates with methanol/gasoline blends,the emission levels of NOx and CO are lower than with gasoline operation.关键词
GDI发动机/甲醇汽油/稀薄燃烧/燃烧特性/排放特性Key words
GDI engine/methanol/gasoline/lean burn/combustion characteristics/emission characteristics分类
能源科技引用本文复制引用
黄震,金兆辉,姜北平,任瑞雪,安东,洪伟..稀燃条件下甲醇汽油发动机燃烧和排放特性的试验研究[J].内燃机工程,2018,39(2):48-52,58,6.基金项目
国家自然科学基金项目(51276080) （51276080）
吉林省自然科学基金项目(20170101137JC)National Science Foundation of China(51276080) （20170101137JC）
The Jilin National Science Foundation(20170101137JC) （20170101137JC）
