Mohammadamin Sheykhnazari - MSc Student, Automotive Engineering Department, Iran University of Science and Technology
Shahab Mafi - PhD Candidate, Automotive Engineering Department, Iran University of Science and Technology
Amirhasan Kakaee - Associate Professor, Automotive Engineering Department, Iran University of Science and Technology

Recent studies have shown that the particulate emissions, specifically particulate matters with a diameter oflower than 2.5 micrometers, are the main factor in polluting Tehran’s weather. Among all other sources, themobile sources have a share of more than 80 percent in generating this pollutant, and the share for the dieselcars is more than 50 percent of the overall particulate matters produced in Tehran. The main issue in theperformance of the diesel particulate filter is regeneration, which means burning the soot and turning it into theash. The regeneration can be done either actively (with the help of an external force) or passively (spontaneouslyand without any external force). The filter in this study is actively regenerated, and the process of activeregeneration will begin when the pressure drop across the filter reaches a specific point. The duration and thedisplacement that takes for the filter reaches this point is different in various driving conditions. In this paper, adiesel particulate filter mounted on a diesel passenger car was simulated by GT-Suite software in three drivingcycles: Tehran, Europe (NEDC), and FTP75. The results show that the displacement required for the DPF to reachthe pressure drop limit is different in these cycles, and it clarifies the effect of the driving conditions on the dieselparticulate filter.

Diesel Particulate Filter, Soot, Pressure Drop in DPF, Driving Cycle