公开(公告)号：US20030143130A1

公开(公告)日：2003-07-31

申请号：US10307277

申请日：2002-12-02

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Gianmarco Boretto ,  Massimo Debenedetti ,  Diego Marzorati

IPC: B01D053/34 ,  B01D053/00

CPC classification number: B01D39/2075 ,  F01N3/022 ,  F01N3/0222 ,  F01N13/0097 ,  Y02T10/20

Abstract: A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a preform of polymeric foam material and impregnating the said preform with the ceramic-powder slurry so as to distribute the slurry evenly on the preform, and by then subjecting the body thus obtained to a thermal cycle of sintering in such a way as to pyrolyze the polymeric material and obtain a high-porosity ceramic material. The ceramic-material powder is chosen from among mullite powder, alumina powder, zirconia powder, and mixtures thereof, having very high purity, controlled grain-size, and a high specific surface.

Abstract translation: 获得用于柴油发动机颗粒的过滤体，该陶瓷泡沫由陶瓷材料粉末基悬浮液（浆料）开始，通过制备聚合物泡沫材料的预成型体并用陶瓷浸渍所述预制件 将浆料均匀地分布在预成型体上，然后使由此获得的主体经受热循环烧结，以使聚合物材料热解并获得高孔隙率陶瓷材料。 陶瓷材料粉末选自莫来石粉末，氧化铝粉末，氧化锆粉末及其混合物，其具有非常高的纯度，受控的粒度和高比表面积。

公开(公告)号：US20020095918A1

公开(公告)日：2002-07-25

申请号：US10050109

申请日：2002-01-18

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Massimo Debenedetti ,  Gianmarco Boretto

IPC: B01D046/00

CPC classification number: B01D46/0023 ,  B01D46/002 ,  B01D46/10 ,  B01D2279/30 ,  F01N3/0211 ,  F01N3/022 ,  F01N2330/06 ,  Y02T10/20 ,  Y10S55/05 ,  Y10S55/30 ,  Y10S264/48

Abstract: A particulate filter for diesel engines comprises a metal shell or casing inside which is set a filtering body made of ceramic foam. The filtering body is made up of a plurality of separate elements made of ceramic foam and having a substantially plane and elongated shape, which are set about a longitudinal axis of the shell in such a way as to define, inside the shell, an inner chamber (B) set inside the array of filtering elements and at least one outer chamber (A) set outside the array. The said chambers respectively communicate with the intake pipe and with the outlet pipe, or vice versa, in such a way that, during use, the flow of the engine exhaust gases that traverses the shell passing from the intake pipe to the outlet pipe (or vice versa) is forced to traverse the aforesaid filtering elements, thus assuming a component of radial velocity with respect to the longitudinal axis of the shell.

Abstract translation: 用于柴油发动机的颗粒过滤器包括金属壳或壳体，其内设置由陶瓷泡沫制成的过滤体。 过滤体由多个由陶瓷泡沫制成的独立元件组成，具有基本上平面和细长的形状，围绕壳体的纵向轴线设置，以便在壳体的内部限定内部腔室 （B）设置在过滤元件阵列内部以及设置在阵列外的至少一个外室（A）。 所述室分别与进气管和出口管连通，反之亦然，使得在使用期间，穿过壳体的发动机废气的流动从进气管通过到出口管（或 反之亦然）被迫穿过上述过滤元件，因此假设相对于壳体的纵向轴线具有径向速度的分量。