Abstract
Based on the diesel particulate filter (DPF) regeneration test bench and the particulate loading device, the effects of regeneration temperature and flow rate on the gas and particulate emissions during the fast regeneration period of the DPF are explored. The results show that the fast regeneration period is usually easy to occur during the DPF active regeneration process, which leads to the fast increase of the internal temperature of the DPF substrate. During the fast regeneration process, the gas and particulate emissions in the regeneration process are mainly concentrated in this period, accounting for 45.8%–83.2% and 61%–84% of the total emissions respectively. With the increase of the regeneration temperature, the proportion of gas emissions during the fast regeneration period decreases, while the proportion of particulate emissions remains essentially unchanged. Increasing the regeneration temperature does not significantly improve the regeneration efficiency in the fast regeneration period. With the increase of the flow rate, both the proportion of gas and particulate emissions decrease, and the DPF regeneration is inhabited. On the other hand, after the fast regeneration period, DPF regeneration enters the slow regeneration stage, the economy of input energy for the DPF regeneration gradually decreases. Controlling active DPF regeneration needs to take into account the impact of fast regeneration period on emission and input energy, together with the effect of regeneration temperature and flow rate.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call