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DPF对柴油车颗粒物排放的影响研究 被引量:2

The Influence of DPF on Diesel Vehicles PM Emissions
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摘要 利用ELPI(电子低压冲击器)对加载DPF的柴油车分别在DPF前后和未安装DPF时进行取样,能有效研究颗粒物排放状况以及颗粒物数量浓度和质量浓度在粒径上的分布。研究发现,安装DPF后将增加车辆发动机排放的颗粒物数量和质量,但经过DPF过滤后,颗粒物质量和数量都会大幅减少,过滤效果良好。 The samples can be extracted from the diesel engine loaded DPF,respectively before and after the DPF,and the not installed DPF using ELPI(electronic low pressure impactor).The situation of particulate matter emissions,as well as the particle size distributionthe of the number concentration and the mass concentration of the particulate matter can be effectively studied.The research concluded that the number and mass of particulate matter emitted from vehicle engine in creased with the installation of DPF vehicles,but they will substantially reduced after the DPF filter,and the filtering effect is good.
出处 《汽车科技》 2010年第2期28-31,共4页 Auto Sci-Tech
关键词 颗粒物排放 过滤效率 粒径分布 数量浓度 质量浓度 PM emission filter rate PM size distribution number concentration of PM mass concentration of PM
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