第39卷(2017)第2期性能与排放
柴油机 Diesel Engine
Vol. 39(2017) No. 2
国V公交车燃用生物柴油的实际道路排放特性研究
楼狄明，朱刚，胡志远，谭丕强（同济大学汽车学院，上海201804）
摘要：采用OBS-2200车载排放测试系统及ELPI电子低压冲击仪，对国V公交车燃用不同比例生物柴油的实际道路排放特性进行了研究。燃料分别为国V纯柴油及其与纯生物柴油按一定体积比例调和后的混合燃料。研究结果表明：实际道路排放随车速的跟随性良好，且基本随车速增大而增加。随着调和比例的升高，CO、THC排放降低，CO,、NO,排放升高。PN及PM排放均降低,PN 对数数量浓度分布峰值区城由小粒径中高速范围向小粒径中低速范图移动，极低值区域由大粒径中低速范图扩大到大粒径全速范围；PM对数质量浓度分布呈双峰带分布，分别在0.1~0.2μm及大于约6μm的范围内，随调和比例升高，前者逐步缩小，后者由中高速范围移向中低速范图，但两波峰的粒径范围位置没有发生明显偏移。
关键词：国V公交车；生物荣油；实际道路；排放
中图分类号：TK421*.5
文献标识码：A
文章编号：1001-4357(2017)02000107
Study on On-Road Emission Characteristics of
aChina-VBusFueledwithBiodiesel Lou Diming, Zhu Gang, Hu Zhiyuan, Tan Piqiang
（School ofAutomotiveStudies，Tongji University，Shanghai 201804）
Abstract: On-road emission characteristics of a China-V diesel bus fueled with different proportions of biodiesel was studied by using OBS-2200 on board emission test system and electrical low pressure impac-tor (ELPI). The fuels were China-V pure diesel and blends of varied proportions of biodiesel with diesel. The research results show that on board emission has good following performance with the bus speed, and basically both emissions increase when bus speed increases. With the increasing of biodiesel content, CO and THC emissions decrease, but CO, and NO, emissions increase. PN (particulate num-ber) and PM （particulate mass) emissions both decrease as well. Meanwhile PN concentration peak moves from medium-light speed towards medium-low speed when the particle diameter is small. The low-est PN concentration appears when the particle diameter is large and covers the whole speed range instead of within the medium-low spead range. The size distribution of PM concentration is bimodal. One is be-tween 0. 1 and 0. 2 μm, and the other is about larger than 6μm. When biodiesel mixture ratio increases, the first peak contracts and the latter moves from medium-light speed towards medium-low speed and the posts of both peaks do not move obviously.
Key words:China-V bus;biodiesel; on-road; emission 收稿日期：2016-11-23
基金项目：本项研究工作得到上海市科学技术委员会资助，资助课题编号为16DZ1203001。
作者简介：楼秋明（1963-），男，教授，主要研究方向为汽车发动机现代化设计、发动机代用燃料与排放控制技术、柴油机混合动力
技术等， E-mail: loudiming@ tongji. edu.cn。