摘要
根据远洋船舶航行特点,构想了一种基于可变热力循环,使气体发动机能够兼具高压气体发动机和低压气体发动机优点的TierⅢ排放方案。希望通过天然气预混合、可变压缩比、引燃优化、燃烧速率控制、空燃比控制等技术的组合应用,实现均质稀薄燃烧,降低NOx排放,使高压气体发动机在不使用EGR和后处理技术的情况下,达到IMOTierⅢ标准。
Based on the characteristics of ocean-going ships,a TierⅢcompliant scheme that allows gas engines to combine the advantages of high-pressure gas engines and low-pressure gas engines through variable thermodynamic cycle is conceived.Several technologies are combined,including natural gas premixing,variable compression ratio,pilot optimization,combustion rate control and air-fuel ratio control,to achieve homogeneous lean-burn and reduce nitrogen oxide emissions,and enable high-pressure gas engines to achieve IMO TierⅢstandards without EGR or after-treatment technologies.
作者
王民
于洪亮
温苗苗
张凌
Wang Min;Yu Hongliang;Wen Miaomiao;Zhang Ling(China Classification Society,Liaoning Dalian 116013;Dalian Ocean University,Liaoning Dalian 116023;China Classification Society,Shanghai 200135;China Classification Society,Beijing 100007)
出处
《柴油机》
2019年第2期31-35,50,共6页
Diesel Engine
关键词
可变热力循环
气体发动机
均质稀薄燃烧
氮氧化物
variable thermodynamic cycle
gas engine
homogeneous lean-burn
nitrogen oxide
