基于MAP图运行的柴油-甲醇双燃料发动机研究  

Study on Diesel-Methanol Dual-Fuel Engine Operation According to Injection MAP

作　　者：魏冰[1] 陈国华[1] 李吉朋 

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《内燃机工程》2016年第5期104-108,共5页Chinese Internal Combustion Engine Engineering

摘　　要：在一台单缸涡流式柴油机上进行了基于MAP图运行的柴油/甲醇双燃料电控喷射系统的研究开发,加装了一套进气道单点喷射甲醇燃料控制系统。利用柴油高压油管信号作为喷油始点控制信号,利用油门位置传感器控制喷射量,以燃油经济性和排放性指标来标定工况最佳喷射点,绘制成甲醇喷射量MAP图。对开阀喷射和闭阀喷射条件下的柴油机排放性能进行了对比。采用开发的喷射系统实现了柴油甲醇双燃料的预混燃烧。试验结果表明,该方案有更好的燃油经济性和NOx排放性能。An electronic-controlled dual-fuel injection unit which operates based on its MAP was developed on a single cylinder diesel engine. A system of single-point methanol injection at intake port was employed. The pressure in high fuel pipe was used as a signal to govern injection timing. Injection quantity was controlled by throttle position. A methanol injection MAP was plotted with optimized engine’s fuel economy and emission at rated point. A premixed compression combustion ignition （PCCI） was achieved with the developed unit. The research results suggest that the developed unit has better fuel economy and NO emission performance.

关 键 词：内燃机柴油-甲醇双燃料 电控喷射系统 开阀喷射 喷射MAP图 预混燃烧 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]