王其平,郑尊清,王浒,毛斌,刘佳林.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[J].内燃机工程,2018,39(3):23-29. |
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 |
DOI:10.13949/j.cnki.nrjgc.2018.03.004 |
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 |
Key Words:polyoxymethylene dimethyl ethers exhaust gas recirculation combustion phase fuel injection pressure |
基金项目:国家自然科学基金项目(51506145) |
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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。 |
Abstract: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. |
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