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本文是通过基于加载减速试验结合ELPI(电子低压冲击器)的方法来研究重型柴油车加载DPF前后的颗粒物排放,对邮政车、清洁车等7辆具有代表性的车辆在DPF前后分别取样。研究发现,DPF能显著减少颗粒物的浓度,过滤效果良好,说明利用此种试验方法来研究重型柴油车颗粒物的排放是可行的,为研究重型车颗粒物排放开发了一种新的方法。
In this paper, we studied the emission of particulate matter before and after loading DPF on heavy-duty diesel vehicles based on the loading decelerating test combined with ELPI (Electronic Low Impact Impacter), and sampled the representative vehicles such as postal vehicles and cleaning vehicles respectively before and after the DPF. The study found that DPF can significantly reduce the concentration of particulate matter, the filtering effect is good, indicating that the use of this test method to study the emission of heavy diesel particulate matter is feasible, to develop a new method for the study of particulate emissions of heavy vehicles.