公开(公告)号：US4462812A

公开(公告)日：1984-07-31

申请号：US447776

申请日：1982-12-08

申请人： Kenneth B. Bly ,  Terrance L. Stark ,  Otto A. Ludecke

发明人： Kenneth B. Bly ,  Terrance L. Stark ,  Otto A. Ludecke

IPC分类号： F01N3/02 ,  F01N3/021 ,  F01N3/023 ,  F01N13/04 ,  F01N13/14 ,  F01N13/18 ,  F02B3/06 ,  B01D39/20

CPC分类号： F01N13/1894 ,  F01N13/017 ,  F01N3/0211 ,  F01N3/023 ,  F01N13/14 ,  F01N2240/20 ,  F01N2330/06 ,  F01N2350/06 ,  F01N2450/24 ,  F02B3/06 ,  Y10S55/30

摘要： A particulate trap for use in the exhaust system of a diesel engine to effect removal of particulates from the exhaust gases discharged from the engine, has a trap housing with an exhaust inlet at one end and an exhaust outlet at its opposite end with at least one ceramic monolith wall flow particulate filter having an inlet end and an outlet end positioned in the trap housing by a tubular support member having a mat of refractory material sandwiched between it and a portion of said particulate filter next adjacent to the outlet end thereof in a manner to prevent bypass flow from said exhaust inlet around said particulate to the exhaust outlet, at least 50% of the exterior surface of the particulate filter next adjacent to its inlet end being in spaced apart relationship to the trap housing so as to define a passage in flow communication with the incoming exhaust gases whereby these gases will heat the exterior of the filter next adjacent to the inlet end thereof so as to effect a reduction of the thermal stress on the particulate filter during engine operation. This support arrangement also reduces radial and axial stress on this exposed end of the filter.

摘要翻译： 用于柴油发动机的排气系统中以从排气中排出的微粒排出的颗粒捕集器具有一个捕集器壳体，其一端具有排气入口，在其相对端具有至少一个排气出口 陶瓷整体壁流动微粒过滤器，其具有入口端和出口端，该入口端和出口端通过管状支撑构件定位在管状支撑构件中，所述管状支撑构件具有夹在其与其出口端相邻的所述微粒过滤器的一部分之间的耐火材料垫， 为了防止旁路从所述颗粒周围的排气入口流到排气出口，颗粒过滤器的至少50％的外表面邻近其入口端处于与收集器壳体间隔开的关系，以便限定通道 与进入的废气流动连通，由此这些气体将加热过滤器的外部，邻近其入口端，以便实现减速 在发动机运行期间对颗粒过滤器的热应力的影响。 该支撑装置还减小了该过滤器暴露端的径向和轴向应力。