甲醇裂解燃料点燃式发动机的研究

Researches on Spark Ignition Engine Fueled with Dissociated Methanol

甲醇经裂解后生成氢气和一氧化碳,甲醇裂解燃料发动机燃用的是甲醇经部分裂解后的富氢混合气,可实现稀薄快速燃烧、增大压缩比,使发动机的热效率得以大幅度提高。试验结果表明,其最高有效热效率达38%,较原汽油机提高30%以上。由于采用了液体甲醇加浓技术,使得其升功率和扭矩达到了原汽油机水平,且排放也大大低于原机。

Methanol can be decomposed into hydrogen and carbon monoxide.Theso-called dissociated methanol S.I.engine,fueled with hydrogen-rich gasfrom an on-board reactor,has higher thermal efficiency due to its lean andfast burning,high compression ratio and exhaust energy recovery.Theexperimental results show that the maximum thermal efficiency is up to38%,which is 30% higher than that of original gasoline engine.The maximumspecific power and torque of DM engine maintain the same level of originalengine,via an approach of liquid methanol compensation at high load.Theexhaust emissions are also much lower than that of gasoline engine.