第38卷第4期 2017年8月
内燃机工程
Chinese Internal Combustion Engine Engineering
文章编号：1000—0925(2017)04—0027—06
Vol. 38 No. 4 August. 2017
380072
连续再生颗粒捕集器对燃用生物柴油的柴油机
颗粒物以及多环芳香烃的影响研究
郑伟
（厦门大学嘉庚学院，漳州363105）
Study of the Effect of Continuously Regenerating Particulate Trap System on
Particle and PAHs Emissions from an Turbocharged Biodiesel Engine
ZHENG Wei
(Tan Kah Kee College,Xiamen University,Zhangzhou 36315,China)
Abstract: In order to reduce the particulate and polycyclic aromatic hydrocarbon emissions, the effect of biodiesel and particulate trap on particle and polycyclic aromatic hydrocarbons emissions was studied on a multi-cylinder turbocharged biodiesel engine with continuous exhaust regeneration. Results show that the diesel particle emissions present in two forms namely nucleation mode and aggregation mode and its particle sige has a multi peak feature. Using biodiesel has little effect on the nucleation mode particle number concentration, but can make the aggregation mode particle emissions have a clear downward trend with the biggest drop up to 94. 6% after using a continuously regenerating particulate trap system. The nucleation mode particle number concentration in diesel particle emissions accounts for more than 6o%, and can be further increased up to 95% after burning biodiesel at the test conditions. The continuously regenerating particulate trap system has a higher collection efficiency for aggregation mode particles with, the maximum efficiency of 96 %, which will be decreased after burning biodiesel, due to the increased nucleation mode particle number concentration clsing biodiesel can effectively reduce most of polycyclic aromatic hydrocarbons emissions, but test results show that chrysene can not be reduced but increased. The joint use of biodiesel and continuously regenerating particulate trap system can make the phenanthrene, pyrene and benzopyrene etc, six kinds of exhaust pollutants fell even more.
摘要：为探究降低油机微粒及多环芳香经的有效排放控制措施，在一台燃用生物染油的增压多缸荣油机上应用连续再生微粒捕集器系统，研究了染油机燃用生物荣油及采用连续再生微粒捕集器系统后对荣油机微粒和多环芳香烃排放的影响，研究结果显示：菜油机微粒排放呈现核态与聚集态形式并且粒子粒径呈现多峰值化特征，燃用生物柴油对核态微粒粒径浓度影响不大，而聚集态微粒排放则有着较为明显的下降趋势，采用连续再生颗粒捕集器后最大下降幅度达到94.6%，荣油机微粒排放中核态粒子浓度占60%以上，燃用生物柴油后该值进一步提升，在试验工况下最大可达到95%。连续可再生微粒摘集器对聚集态粒子辅集效率
收稿日期：2016-04-05
基金项目：国家自然科学基金项目（51366006）；福建省白然科学基金项目（2015J01223)；2015年度教育厅福建省高校新世纪优秀人才计划项目：
福建省中青年教师教育科研项目（JA15612）
Fund Project: National Natural Science Foundation of China ( 51366006) ; Fujian Provincial Natural Science Foundation Projects (2015J01223) ;
Fujian Provincial Education Department New Century Talent Program in 2015; Fujian Province Young and Middle-age Teacher Education Research Project(JA15612)
作者简介：郑伟（1979—），男·副教授·博士·主要研究方向为内燃机工作过程及纳米流强化传热·E-mail：andyzeen@163.com 万方数据