柴油引燃预混合天然气实现准均质压燃着火燃烧方式的理论研究  

A Theoretical Study on the Realization of QHCCI in a Pre-mixed Natural Gas Engine Ignited by Pilot Diesel Fuel

作　　者：姚春德[1] 姚广涛[1] 宋金瓯[1] 段峰[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《汽车工程》2005年第2期168-171,共4页Automotive Engineering

基　　金：国家自然科学基金项目 (5 0 376 0 4 5 )资助

摘　　要：通过重新构建引燃油着火模型和双燃料燃烧模型,对在不同当量比情况下,引燃油雾化、蒸发与着火的特点及对燃烧过程的影响进行了较深入的理论研究,提出了柴油引燃预混合天然气实现准均质压燃着火的引燃油喷油特性。The pilot diesel fuel ignition model and the dual fuel engine com bustion model are reconstructed. Based on the models, a theoretical study on the characteristics of atomization, evaporation and ignition of the pilot diesel fu el and their effects on combustion process is carried out under different stoich iometric mixture ratios. And the injection characteristics of pilot diesel fuel for realizing quasi-homogenous charge compression ignition (QHCCI) of pre-mixe d natural gas are given.

关 键 词：柴油 预混合天然气 准均质压燃着火燃烧方式 引燃油雾化 喷油特性 发动机 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]