柴油掺混PODE对重型柴油机低温燃烧及排放影响的试验研究  

Research on Effect of PODE/Diesel Blend on Low-Temperature Combustion and Emissions of a Heavy-Duty Engine

作　　者：王其平 郑尊清[1] 王浒[1] 毛斌[1] 刘佳林[1] WANGQiPing;ZHENGZunqing;WANGHu;MAO Bin;LIU Jialin(Power engineering Department,Tianjin University,Tianjin 300072, Chin)

机构地区：[1]天津大学动力工程系,天津300072

出　　处：《内燃机工程》2018年第3期23-29,共7页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金项目(51506145)~~

摘　　要：在一台多缸重型柴油机上研究了聚甲氧基二甲醚(PODE)替代部分柴油并结合废气再循环(EGR)策略对燃烧和排放的影响。试验结果表明聚甲氧基二甲醚具有较高的十六烷值和含氧量,可以有效地减少缸内的不均匀程度,降低污染物排放。聚甲氧基二甲醚可以提高扩散燃烧速率,缩短燃烧持续期,有利于热效率的提高。优化燃油喷射策略可以有效提高发动机的热效率和污染物排放。The influence of poly-methoxyl dimethyl ether（PODE）on combustion and emissions was studied based on a low-temperature mode on a multi-cylinder heavy-duty diesel engine adopting exhaust gas recirculation strategy.The results show that PODE which has higher cetane number and oxygen content can effectively reduce the non-homogeneity of combustion in cylinder and reduce the pollutant emissions.PODE can also improve the diffusion combustion rate,shorten the combustion duration and improve thermal efficiency.

关 键 词：聚甲氧基二甲醚 废气再循环 燃烧相位 燃油喷射压力 

分 类 号：TK442[动力工程及工程热物理—动力机械及工程]