-
公开(公告)号：US4667469A
公开(公告)日：1987-05-26
申请号：US805691
申请日：1985-12-06
CPC分类号： F01N3/0222 , F01N2240/20 , F01N2330/06 , Y02T10/20
摘要： An exhaust gas filter for Diesel engines that consists of a filter block made of a porous ceramic material, and a plurality of ducts extending through said filter block that extend in the flow direction of the exhaust gases. The ducts in each case are alternately closed at their upstream or their downstream end, whereby the exhaust gases are forced to penetrate a filtering separating wall between two ducts. The closing means at the downstream end, are arranged so that they are staggered with respect to one another in the flow direction; in particular they are staggered by about 5 to 150 mm. The staggered arrangement of the closing means reduces the danger of a thermal damage to the filter block during the burning-off of the deposited soot.
摘要翻译： 一种用于柴油发动机的废气过滤器，其由多孔陶瓷材料制成的过滤块和沿废气流动方向延伸的多个通过所述过滤块的管道。 每种情况下的管道在其上游或其下游端交替关闭，由此排气被迫穿过两个管道之间的过滤隔离壁。 下游端的关闭装置被布置成使得它们在流动方向上彼此交错; 特别是它们交错约5至150mm。 闭合装置的交错布置减少了在沉积的烟灰燃烧期间对过滤块的热损伤的危险。
-
公开(公告)号：US4704863A
公开(公告)日：1987-11-10
申请号：US810766
申请日：1985-12-19
CPC分类号： F01N3/0222 , B01D46/2407 , F01N2240/20 , F01N2330/06 , Y02T10/20 , Y10S55/30
摘要： An exhaust gas filter for Diesel engines that consists of a monolithic filter block made of a porous ceramic material having a plurality of ducts extending in the flow direction of the exhaust gases, said ducts alternately being closed by plugs in order to force the passage of gas through the duct walls into adjacent ducts. In the case of this exhaust gas filter, the filter block is divided into zones having a decreasing porosity in the flow direction of the gases, and the plugs which force the passage of the gas through the duct walls are each arranged in the area of the zone border. Filters are preferred that have two to four zones of decreasing porosity. The exhaust gas filters are manufactured in that a filter blank that has the largest desired porosity is immersed in a solution or suspension of a porosity-reducing agent up to the desired zone border and is subsequently dried and is possibly burnt. Preferred agents for reducing the porosity are water glass solutions or cordierite suspensions.
摘要翻译： 一种用于柴油发动机的废气过滤器，其由具有沿废气流动方向延伸的多个管道的多孔陶瓷材料制成的单块过滤器块组成，所述管道交替地被塞子封闭，以迫使气体通过 通过管道壁进入相邻的管道。 在这种废气过滤器的情况下，过滤块被分成在气体的流动方向上具有降低的孔隙率的区域，并且迫使气体通过管道壁的塞子分别布置在 区域边界。 过滤器是优选的，具有两到四个孔隙率降低的区域。 废气过滤器的制造方法是将具有最大期望孔隙率的过滤器坯料浸渍在孔隙减少剂的溶液或悬浮液中直到所需的区域边界，并随后被干燥并且可能被燃烧。 用于降低孔隙率的优选试剂是水玻璃溶液或堇青石悬浮液。
-
公开(公告)号：US5300133A
公开(公告)日：1994-04-05
申请号：US005075
申请日：1993-01-15
CPC分类号： B01D46/247 , B01D46/2451 , F01N3/0222 , B01D2046/2492 , B01D2046/2496 , F01N2330/02 , F01N2530/24 , Y02T10/20 , Y10S55/30
摘要： An exhaust-gas filter, for example a soot-particle filter, has a filter element which has inlet passages for the raw gas and outlet passages for the clean gas. In order as far as possible to prevent clogging of the filter over the running time caused by deposits on the filter walls, the raw-gas passages are configured with a larger cross-section than the clean-gas passages.
摘要翻译： 排气过滤器，例如烟灰颗粒过滤器，具有过滤元件，该过滤元件具有用于原料气体和用于清洁气体的出口通道的入口通道。 为了尽可能防止由过滤壁上的沉积物引起的运行时间过滤器的堵塞，原料气体通道被构造成比清洁气体通道更大的横截面。
-
公开(公告)号：US5935530A
公开(公告)日：1999-08-10
申请号：US841565
申请日：1997-04-30
申请人： Hans-Joachim Langer , Bernhard Jokl
发明人： Hans-Joachim Langer , Bernhard Jokl
IPC分类号： B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F01N3/36 , F01N13/02 , F02B1/04 , F02B3/06 , B01D53/34
CPC分类号： F01N3/2053 , B01D53/9431 , B01D53/9472 , F01N13/009 , F01N13/0097 , F01N3/0814 , F01N3/20 , B01D2255/912 , F01N2250/12 , F01N2570/12 , F01N2570/14 , F02B1/04 , F02B3/06
摘要： An exhaust catalytic converter for a Diesel engine that provides for enrichment of the Diesel engine exhaust with hydrocarbons that support nitrogen oxide conversion in the catalyst. The system includes a first catalytic converter stage that is designed for NOx conversion in a first temperature range utilizing a first part of the HC enrichment volume in the exhaust and has a suitable first catalyst material charge for the purpose as well as a second catalytic converter stage that follows the first in the exhaust flow direction, the second stage being designed for NOx conversion in a second temperature range higher than the first and utilizing a second part of the HC enrichment volume in the exhaust, and containing a second catalyst material charge suitable for the purpose. By suitably tuning the system with HC enrichment, reduction of emissions of solid and volatile particles in the Diesel exhaust can be achieved.
摘要翻译： 用于柴油发动机的排气催化转化器，其用于在催化剂中支持氮氧化物转化的碳氢化合物浓缩柴油发动机排气。 该系统包括第一催化转化器级，其被设计用于在第一温度范围内的NOx转化，其利用排气中的HC富集体积的第一部分，并且具有用于该目的的合适的第一催化剂材料装料以及第二催化转化器级 其在废气流动方向上跟随第一级，第二级被设计用于在高于第一级的第二温度范围内的NOx转化，并且利用排气中的HC富集体积的第二部分，并且包含适于 目的。 通过适当地调节HC浓缩系统，可以实现柴油机尾气中固体和挥发性颗粒的排放减少。
-
-
-
搜索结果
4 条记录 (耗时 0.019 秒)
