王昌冬，韩一奇，高  洋

（北车（大连）柴油机有限公司技术部，辽宁 大连 116022）

摘要：本文介绍了8240ZC-DF型柴油-天然气发动机使用孔数、孔径和总流通面积不同的两组喷油器，对的气缸内燃烧特性、主要性能参数和排放性能的影响。

关键词：柴油-天然气双燃料发动机；喷油器；燃烧特性；主要性能；排放

Abstract: This paper introduced the effects of two kinds of injectors with different number of nozzle holes, nozzle diameter and total flow area on the combustion characteristics, main performance and emission of 8240ZC-DF diesel-natural gas fueled dual fuel engine.        

Keywords: Diesel-natural Fueled Gas Fuel Engine; Fuel Injector; Combustion Characteristics; Main Performance; Emission