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5934680 
Journal Article 
燃用生物柴油对采用CRPT技术的柴油机微粒粒子数浓度和PAHs排放的影响 
Zheng, W; Yu, X 
2018 
Chk 
Huanjing Kexue Yanjiu / Research of Environmental Sciences
ISSN: 1001-6929 
Editorial Board, Research of Environmental Sciences 
31 
2 
397-408 
Chinese 
The PM and polycyclic aromatic hydrocarbons emissions from diesel can make pollutions for air condition. In order to know the universal law of particle number concentration and the quality of each component of polycyclic aromatic hydrocarbons using biodiesel (BD) and continuous regeneration particulate traps system, we studied particle number concentration and polycyclic aromatic hydrocarbons component quality change law for three different displacement diesel using comprehensive test bench for internal combustion engine. The results showed that: (1) Burning BD, making big impact to particle number concentration and the total mass of aggregated particles, but was just reversed to nuclear particles. Particles total mass decline range of aggregated particles was 97.04% and the particle number concentration was from 109 m-3 to 106 m-3. However, nuclear particle number concentration was not changed much, and particle number ratio increased by 51.50% maximally. (2) Burning BD, because of impacting on particle number concentration of different particles made particle trapping efficiency of CRPT for declined for its maximum proportion of 21.10%; (3) The total mass of polycyclic aromatic hydrocarbons was obvious reduced by 92.95%, 91.78%, 92.70%. The quality of each component of polycyclic aromatic hydrocarbons had different variation trend, the 2-dimethylbenz (a) anthracene quality was completely disappear for three diesels, but the quality of chrysene and benzanthracene was risen not fall, especially chrysene, after burning BD30, its mass was about 50% of the total mass. In conclusion, 'BD+CRPT' technical scheme and the emissions should focus on nuclear particles and chrysene and benzanthracene of polycyclic aromatic hydrocarbons. © 2018, Editorial Board, Research of Environmental Sciences. All right reserved. 
Aggregated particles; Biodiesel; Continuous regeneration particulate trap (CRPT); Nuclear particles; Polycyclic aromatic hydrocarbons