公开(公告)号：US4965101A

公开(公告)日：1990-10-23

申请号：US280689

申请日：1988-12-06

申请人： Olaf Frei ,  Max Frish ,  Viktor Bodmer ,  Tiberiu Mizrah

发明人： Olaf Frei ,  Max Frish ,  Viktor Bodmer ,  Tiberiu Mizrah

IPC分类号： F01N3/02 ,  B01D39/20 ,  C04B38/00 ,  C04B41/50 ,  C04B41/87 ,  F01N3/022 ,  F02B3/06

CPC分类号： C04B41/009 ,  B01D39/2093 ,  C04B38/0051 ,  C04B41/5031 ,  C04B41/87 ,  F01N3/0222 ,  F01N2330/06 ,  F02B3/06 ,  Y02T10/20

摘要： In certain operating conditions of diesel engines, diesel soot filters which are made of known ceramic foam and filter efficiently per se have zero or only a very low degree of particle filtration, in particular at hight exhaust temperatures and exhaust velocities, that is, above all when the diesel engines are running under full load. Ceramic foam filters for cleaning exhaust gases of diesel engines in which the surface is roughened and wherein the peak-to-peak interval is approximately 1 to 100 .mu.m, preferably 1 to 10 .mu.m, do not have this disadvantage. A ceramic foam of this kind is manufactured by roughening the surface by deposition of inorganic materials and, if required, subsequent decomposition by temperature treatment.

摘要翻译： 在柴油发动机的某些操作条件下，由已知的陶瓷泡沫制成的柴油烟灰过滤器本身有效地具有零或非常低的颗粒过滤度，特别是在高排气温度和排气速度下，也就是最重要的 当柴油发动机在满载下运行时。 用于清洁表面粗糙化并且其中峰 - 峰间隔为约1至100μm，优选1至10μm的柴油发动机废气的陶瓷泡沫过滤器不具有该缺点。 通过无机材料的沉积，如果需要，随后通过温度处理分解，使表面粗糙化，制造这种陶瓷泡沫。