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DPF 특성이 강제재생시 DPF 내부온도에 미치는 영향에 관한 연구
박찬엽(Chanyoub Park),최형수(Hyungsu Choi),심우찬(Woochan Sim),이홍철(Hongchul Lee),김경운(Kyungwoon Kim),천승호(Sungho Cheon),한대곤(Daegon Han) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
The effect of DPF characteristics, such as material and cell density, on the internal temperature of DPF during active regeneration was investigated by using DPF test rig. DPF was regenerated by direct fuel injection into the exhaust gas in the upstream of DOC and exhaust gas in front of DPF was heated up to 650℃ by controlling the quantity of injected fuel. Because thermal conductivity of SiC DPF is superior to that of cordierite DPF, radial thermal gradient and maximum DPF temperature of SiC DPF was much lower than those of cordierite DPF during active regeneration in case of the same soot loading and cell density condition. However, the difference of cell density in SiC DPF had little effect on thermal properties during active regeneration. That means that the material of DPF is a key factor to influence thermal properties of DPF during regeneration.