| 摘要 |
PCT No. PCT/DE87/00245 Sec. 371 Date Jan. 30, 1989 Sec. 102(e) Date Jan. 30, 1989 PCT Filed May 31, 1987 PCT Pub. No. WO87/07324 PCT Pub. Date Dec. 3, 1987.The invention concerns an exhaust gas cleaning system for Diesel engines with a filtration device for separating soot from the exhaust gases and a regeneration device for the filtration device. The filtration device is equipped with filter tubes which are closed at one end. Thus, the exhaust gases can be fed in at the other side and penetrate the filter walls. The soot is deposited on the inner surface of the filter tubes. A burner is provided which generates the burn-off gases for the soot, suitable measures being taken to ensure that the burner gases only act on one section of the filter block at a time. Feed and discharge of the exhaust gases are selected in such a way that the cleaned exhaust gases flow around the filter tubes which are being regenerated. The direction of flow of the exhaust gases can also be reversed so that the exhaust gases first flow around the filter tubes passing through the walls into the tube interiors, and then flow out to the discharge through the openings in the tubes. In this case, the soot is deposited on the external surfaces of the filter tubes. |
