全新ACD320系列发动机研究与开发

Research and Development of New ACD320 Series Engine

针对使用天然气燃料的大功率发动机易失火和易爆震难以实现稀薄燃烧的问题,以ACD320系列中速天然气、双燃料发动机为研究对象,开展点火技术研究。首先提出了预燃室火花塞点火和微量引燃油压缩点火的技术方案,开展了两型样机高度通用化的结构设计;然后结合热力学性能计算优化发动机的性能和排放的方法。结果表明:通过提高点火能量来实现气体燃料的稀薄燃烧的方法是可行的。

Aiming at the problem that high-power engines using natural gas fuel are prone to misfire and detonation, and it is difficult to achieve lean combustion, the ACD320 series of medium-speed natural gas and dual fuel engines are taken as the research object to carry out ignition technology research. Firstly, the technical schemes of pre-chamber spark plug ignition and micro pilot oil compression ignition are proposed, and the highly universal structural design of the two prototypes is carried out;Then, combined with thermodynamic performance calculations, engine performance and emissions methods are optimized. The results show that achieving lean combustion of gaseous fuels is feasible by increasing ignition energy.