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| 1 | DPF主动再生过程颗粒排放特性试验显示文摘通过柴油发动机台架,采用后喷助燃的再生方式研究了主动再生过程中柴油机颗粒捕集器(DPF)出口的颗粒排放特性.结果表明:在主动再生期间,DPF出口颗粒浓度可增加2~3个数量级;在升温过程和再生过程,出口颗粒物数量浓度和粒径分布会因为碳载量和再生温度的共同作用而表现出差异;升温过程中,10 nm左右核模态颗粒物的排放主要由来流中颗粒物的穿透引起;再生过程中,10 nm左右核模态颗粒物的排放主要由碳烟颗粒层氧化反应生成的二次颗粒逃逸引起;整个再生期间,100 nm左右的积聚态颗粒物的排放主要由DPF载体内碳烟颗粒的逃逸引起. | 孟忠伟 陈超 秦源 李鉴松 杜雨恒 蒋渊 | 2020 | 内燃机学报2020，38，2： | 16 |
| 2 | Emission reduction characteristics of a catalyzed continuously regenerating trap after-treatment system and its durability performance显示文摘The primary purpose of this study was to investigate the effect of a catalyzed continuously regenerating trap(CCRT)system composed of a diesel oxidation catalyst(DOC)and a catalyzed diesel particulate filter(CDPF)on the main gaseous and particulate emissions from an urban diesel bus,as well as the durability performance of the CCRT system.Experiments were conducted based on a heavy chassis dynamometer,and a laboratory activity test as well as X-ray photoelectron spectroscopy(XPS)test were applied to evaluate the changes of the aged CCRT catalyst.Results showed that the CCRT could reduce the CO by 71.5%and the total hydrocarbons(THC)by 88.9%,and meanwhile promote the oxidation of NO.However,the conversion rates for CO and THC dropped to 25.1%and 55.1%,respectively,after the CCRT was used for one year(~60,000 km),and the NO oxidation was also weakened.For particulate emissions,the CCRT could reduce 97.4%of the particle mass(PM)and almost 100%of the particle number(PN).The aging of the CCRT resulted in a reduced PM trapping efficiency but had no observable effect on the PN;however,it increased the proportion of nucleation mode particles.The activity test results indicated that the deterioration of the CCRT was directly relevant to the increase in the light-off temperatures of the catalyst for CO,C3H8 and NO2.In addition,the decreased concentrations of the active components Pt2+ and Pt4+ in the catalyst are also important factors in the CCRT deterioration. | Yunhua Zhang Diming Lou Piqiang Tan Zhiyuan Hu Hu Li | 2019 | Journal of Environmental Sciences2019，31，10： | 2 |
| 3 | 非道路国4柴油机DPF再生方式研究显示文摘研究后喷助燃的再生方式下,颗粒捕集器(DPF)降怠速(DTI)再生对再生性能和传热性能的影响规律。基于能量守恒定理,建立热管理模型,得到DPF载体温度与排气流量的影响规律。在此基础上,借助热量在载体内的累积,研究DTI再生过程中,再生温度、再生时间、碳载量,以及排气流量对DPF再生效率、载体峰值温度的影响,并分析碳烟颗粒数浓度的变化规律。此外,采用阶梯温度控制方法,拓宽DTI再生碳载量窗口,保证载体和涂层在许可温度范围内,满足安全、可靠性再生前提下同时获得最少的再生时间及最优的再生效率。结果表明:与主动再生相比,优化后的DTI再生方式,再生效率为70%,再生时间、再生油耗分别降低了72%,65%,有效减少主动再生过程机油稀释的风险,降低燃油消耗量。 | 杨淇竣 赵增亮 | 2021 | 装备制造技术2021，，7： | 0 |
| 4 | 人体与体外防微尘附着评价方法的等同性研究显示文摘开发了体外替代评价方法,并且确认了其是否与人体评价方法具有等同性。研究结果显示,使用在不同条件下(皮革的颜色、温度和干燥等)处理的人造皮革进行的体外实验和人体实验没有显著性差异(p>0.05),从而可以确认人体与体外方法之间具有等同性。该体外评估方法经济、有效、安全,是评估防微尘附着功效的有效方法。 | Jiyeon Han Sanghun Kim Guihua Lin A Reum Kim Eunjoo Kim | 2022 | 日用化学品科学2022，45，8： | 0 |
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