多点顺序喷射天然气发动机的开发研究

Development of an Electronically Controlled Sequential Injection Dedicated CNG Engine

将一台 CY6 10 5 Q柴油机改造为点燃式单燃料天然气发动机。该发动机采用了电控多点燃气顺序喷射以及电控高能点火等新技术 ,同时对发动机的进气系统、燃烧系统等进行了优化设计。试验结果表明 ,经改进设计的天然气发动机的动力性与原机相当 ,低速转矩特性明显改善 ,排放性能指标达到了欧洲 号标准。由于使用廉价的天然气 。

A spark-ignited dedicated CNG engine was developed on the base of a CY6105Q diesel engine.On this CNG engine the electronically controlled sequential multi-point gas injection technology and high-energy ignition system were adopted,and the induction system,combustion system were optimized.The experimental results show that the dedicated CNG engines dynamic performance is nearly equivalent to that of the original diesel engine,the torque characteristics at lower speed is improved,and the exhaust emission can meet the demands of the Euro I standards.The engine economic performance is improved because the fuel consumption relies on the cheap natural gas 100 percent.