氧化铈纳米颗粒对柴油氧化和燃烧特性的影响  

Effect of Cerium Oxide Nano-particles on Oxidation and Combustion Characteristics of Diesel

作　　者：梁凯铭 钱作勤[1] LIANG Kaiming;QIAN Zuoqin(School of Naval Architecture, Ocean and Energy Power Engineering,Wuhan University of Technology, Wuhan 430063, China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第1期94-99,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：装备预研教育部联合基金项目(6141A02022521)。

摘　　要：选用氧化铈(CeO_(2))纳米颗粒作为燃油添加剂,配制质量浓度分别为50,100和150 mg/L的CeO_(2)纳米柴油.对纳米柴油进行热重试验,分析其氧化特性.在WP4C型四缸柴油机上对纳米柴油进行了不同工况的推进特性试验,对比研究了发动机性能和燃烧特性.结果表明:纳米柴油具有更优异的蒸发和氧化性能.柴油中添加纳米颗粒能够提高燃油的蒸发和氧化速率,促进燃油的氧化反应进程,使反应向低温区移动.在发动机100%工况下,相比纯柴油,CeO_(2)纳米柴油的燃烧始点有不同程度的提前,缸压和放热率皆有所增加.随着颗粒浓度分数的提升,有效热效率分别提高1.14%、1.33%和1.73%.CeO_(2) nanoparticles were used as fuel additives to prepare CeO_(2) nano diesel with mass fractions of 50,100 and 150 mg/L,respectively.The oxidation characteristics of nano-diesel oil were analyzed by thermogravimetric test.The propulsion characteristics of nano-diesel oil under different working conditions were tested on WP4C four-cylinder diesel engine,and the engine performance and combustion characteristics were compared and studied.The results show that nano-diesel has better evaporation and oxidation performance.Adding nanoparticles to diesel oil can improve the evaporation and oxidation rate of fuel oil,promote the oxidation reaction process of fuel oil,and make the reaction move to the low temperature region.At 100%engine operating condition,compared with pure diesel,the combustion starting point of CeO_(2) nano diesel is advanced to varying degrees,and the cylinder pressure and heat release rate are increased.With the increase of particle mass fraction,the effective thermal efficiency increases by 1.14%,1.33%and 1.73%respectively.

关 键 词：氧化铈 纳米柴油 热重试验 柴油机 有效热效率 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]