公开(公告)号：US5746989A

公开(公告)日：1998-05-05

申请号：US681957

申请日：1996-07-30

申请人： Mikio Murachi ,  Seiji Okawara ,  Koichi Kojima ,  Takuya Kondo

发明人： Mikio Murachi ,  Seiji Okawara ,  Koichi Kojima ,  Takuya Kondo

IPC分类号： F01N3/02 ,  B01D53/94 ,  F01N3/023 ,  F01N3/027 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N13/02 ,  F02B3/06 ,  F02D41/02 ,  F02D41/40 ,  B01D53/92

CPC分类号： F02D41/405 ,  B01D53/9495 ,  F01N13/009 ,  F01N3/0231 ,  F01N3/027 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2882 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/029 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2430/06 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03 ,  F02B3/06 ,  Y02T10/26 ,  Y02T10/44

摘要： According to the method of the present invention, NO (nitrogen monoxide) in the exhaust gas of a diesel engine is first oxidized to NO.sub.2 (nitrogen dioxide) by an oxidizing catalyst. Further, carbon particles in the exhaust gas are trapped by a DPF (diesel particulate filter). The exhaust gas containing NO.sub.2 formed by oxidation of nitrogen monoxide is, then, fed to the DPF, and NO.sub.2 in the exhaust gas reacts with the carbon particles trapped in the DPF. When the NO.sub.2 reacts with carbon particles, carbon particles are oxidized (burned) by NO.sub.2 and removed from DPF, and, at the same time, NO.sub.2 is reduced to NO by the carbon particles. The exhaust gas containing NO formed by the reaction between the carbon particles and NO.sub.2 is fed to an NO.sub.X absorbent. In the NO.sub.X absorbent, NO is absorbed by the NO.sub.X absorbent and, thereby, removed from the exhaust gas. Therefore, according this method, the carbon particles collected by the DPF can be easily burned by NO.sub.2, thereby being removed from the DPF without increasing the amount of NO released to the atmosphere.

摘要翻译： 根据本发明的方法，通过氧化催化剂将柴油发动机废气中的NO（一氧化氮）首先氧化成NO2（二氧化氮）。 此外，废气中的碳颗粒被DPF（柴油微粒过滤器）捕获。 然后，通过一氧化氮氧化形成的含有NO 2的排气被送入DPF，并且废气中的NO 2与被捕获在DPF中的碳颗粒发生反应。 当NO2与碳颗粒反应时，碳颗粒被NO2氧化（燃烧）并从DPF中除去，同时NO2被碳颗粒还原成NO。 通过碳粒子和NO2之间的反应形成的含有NO的废气被供给至NOX吸收剂。 在NO x吸收剂中，NO被NO x吸收剂吸收，从而从废气中除去。 因此，根据该方法，由DPF收集的碳粒子可以容易地被NO2燃烧，从而在不增加释放到大气中的NO的量的情况下从DPF中除去。

公开(公告)号：US20080025882A1

公开(公告)日：2008-01-31

申请号：US10587984

申请日：2005-02-10

申请人： Makoto Tsuji ,  Daisuke Oki ,  Seiji Okawara

发明人： Makoto Tsuji ,  Daisuke Oki ,  Seiji Okawara

IPC分类号： B01D50/00 ,  B01D53/34

CPC分类号： C04B38/0074 ,  B01D53/9454 ,  B01J23/58 ,  B01J35/023 ,  B01J37/0242 ,  C04B2111/00793 ,  C04B2111/0081 ,  Y02T10/22 ,  C04B35/00 ,  C04B38/0054

摘要： To provide a filter catalyst in which the closure of ventilation holes by a catalytic layer is inhibited.A filter catalyst of the present invention is characterized in that it has pores of 1-20 μm in a porosity of 11% or more. The filter catalyst of the present invention has an effect of being capable of inhibiting the rise of pressure loss when sufficient particulates deposit.

摘要翻译： 提供一种过滤器催化剂，其中通过催化层封闭通风孔被抑制。 本发明的过滤器催化剂的特征在于，其孔隙率为11％以上，具有1-20μm的孔。 本发明的过滤器催化剂具有当足够的颗粒沉积时能够抑制压力损失升高的效果。

公开(公告)号：US07959868B2

公开(公告)日：2011-06-14

申请号：US11578041

申请日：2005-04-12

申请人： Susumu Sarai ,  Seiji Okawara

发明人： Susumu Sarai ,  Seiji Okawara

IPC分类号： B01D50/00

CPC分类号： B01D46/2403 ,  B01D46/0024 ,  B01D46/0078 ,  B01D2251/2067 ,  B01D2258/012 ,  B01D2275/206 ,  B01D2279/30 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2821 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2240/20 ,  F01N2330/02 ,  F01N2330/321 ,  F01N2330/38 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/24

摘要： An exhaust gas purifying apparatus is comprised of a plurality of exhaust gas passages, and a filter body 3 installed in the exhaust gas passages. The exhaust gas passage contains a filter-conducting portion 100 of conducting the exhaust gas to the filter body 3, and a filter-bypassing portion 200 of bypassing the filter-conducting portion 100 by branching out to an exhaust gas passage adjacent from the filter-conducting portion 100. When PMs are deposited on the filter-conducting portion 100 and an exhaust gas pressure loss is increased, the exhaust gas is branched out from the filter-bypassing portion 200 to flow.

摘要翻译： 废气净化装置由多个废气通道和安装在废气通道中的过滤器主体3构成。 排气通路包含将排气导入过滤体3的过滤器导通部100和通过分流到与过滤器主体3相邻的排气通路旁通过滤器导通部100的过滤器旁通部200， 当PM沉积在过滤器导电部分100上并且排气压力损失增加时，废气从过滤器旁通部分200分支流出。

公开(公告)号：US20050175515A1

公开(公告)日：2005-08-11

申请号：US10922948

申请日：2004-08-23

申请人： Seiji Okawara

发明人： Seiji Okawara

IPC分类号： F01N3/02 ,  B01D53/94 ,  B01J23/58 ,  F01N3/022 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N13/02 ,  B01D53/34

CPC分类号： F01N3/0821 ,  F01N3/0222 ,  F01N3/0231 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/0097 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2330/06 ,  F01N2610/03

摘要： An exhaust gas-purifying apparatus includes an NOx sorbing-and-reducing first catalyst, a filter second catalyst, and an NOx sorbing-and-reducing third catalyst, which are disposed in an exhaust system in this order from a downstream side to an upstream side of a flow of exhaust gases. In the exhaust system, a liquid reducing agent is supplied into the exhaust gases intermittently. The first catalyst exhibits a remarkably high NOx purifying ability, because not only the third catalyst and the second catalyst gasify, crack and homogenize the reducing gas fully but also the reactions at the third and second catalysts elevate the temperature of exhaust gases. Thus, the exhaust gas-purifying apparatus can purify PMs and NOx efficiently.

摘要翻译： 一种废气净化装置，包括NO x吸附和还原性第一催化剂，过滤器第二催化剂和NO x吸附和还原性第三催化剂，其中 从废气流的下游侧到上游侧依次配置在排气系统中。 在排气系统中，液体还原剂间歇地供给到废气中。 第一种催化剂表现出非常高的NO x X 3净化能力，因为不仅第三催化剂和第二催化剂气化，完全裂化和均化还原气体，而且第三和第二催化剂上的反应提高了 废气温度。 因此，废气净化装置可以有效地净化PM和NO x。

公开(公告)号：US07560079B2

公开(公告)日：2009-07-14

申请号：US10922948

申请日：2004-08-23

申请人： Seiji Okawara

发明人： Seiji Okawara

IPC分类号： B01D50/00 ,  B01D53/34 ,  F01N3/00 ,  F23J11/00

CPC分类号： F01N3/0821 ,  F01N3/0222 ,  F01N3/0231 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/0097 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2330/06 ,  F01N2610/03

摘要： An exhaust gas-purifying apparatus includes an NOx sorbing-and-reducing first catalyst, a filter second catalyst, and an NOx sorbing-and-reducing third catalyst, which are disposed in an exhaust system in this order from a downstream side to an upstream side of a flow of exhaust gases. In the exhaust system, a liquid reducing agent is supplied into the exhaust gases intermittently. The first catalyst exhibits a remarkably high NOx purifying ability, because not only the third catalyst and the second catalyst gasify, crack and homogenize the reducing gas fully but also the reactions at the third and second catalysts elevate the temperature of exhaust gases. Thus, the exhaust gas-purifying apparatus can purify PMs and NOx efficiently.

摘要翻译： 排气净化装置包括从下游侧到上游的顺序配置在排气系统中的NOx吸附还原性第一催化剂，过滤器第二催化剂和NOx吸附还原性第三催化剂 一侧排出废气。 在排气系统中，液体还原剂间歇地供给到废气中。 第一催化剂显示出非常高的NOx净化能力，因为不仅第三催化剂和第二催化剂气化，完全破裂和均化还原气体，而且第三催化剂和第二催化剂上的反应提高了废气的温度。 因此，排气净化装置能够高效地净化PM和NOx。

公开(公告)号：US20080159923A1

公开(公告)日：2008-07-03

申请号：US11578041

申请日：2005-04-12

申请人： Susumu Sarai ,  Seiji Okawara

发明人： Susumu Sarai ,  Seiji Okawara

IPC分类号： B01D53/86 ,  B01D46/00

CPC分类号： B01D46/2403 ,  B01D46/0024 ,  B01D46/0078 ,  B01D2251/2067 ,  B01D2258/012 ,  B01D2275/206 ,  B01D2279/30 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2821 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2240/20 ,  F01N2330/02 ,  F01N2330/321 ,  F01N2330/38 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/24

摘要： An exhaust gas purifying apparatus is comprised of a plurality of exhaust gas passages, and a filter body 3 installed in the exhaust gas passages. The exhaust gas passage contains a filter-conducting portion 100 of conducting the exhaust gas to the filter body 3, and a filter-bypassing portion 200 of bypassing the filter-conducting portion 100 by branching out to an exhaust gas passage adjacent from the filter-conducting portion 100. When PMs are deposited on the filter-conducting portion 100 and an exhaust gas pressure loss is increased, the exhaust gas is branched out from the filter-bypassing portion 200 to flow.

摘要翻译： 废气净化装置由多个废气通道和安装在废气通道中的过滤器主体3构成。 排气通路包含将排气导入过滤体3的过滤器导通部100和通过分流到与过滤器主体3相邻的排气通路旁通过滤器导通部100的过滤器旁通部200。 导电部分100。 当PM沉积在过滤器导通部分100上并且排气压力损失增加时，废气从过滤器旁通部分200分支出来流动。

公开(公告)号：US07306771B2

公开(公告)日：2007-12-11

申请号：US10660707

申请日：2003-09-12

申请人： Seiji Okawara

发明人： Seiji Okawara

IPC分类号： B01D53/34 ,  B01D39/20 ,  C01J3/84

CPC分类号： B01D53/945 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/91 ,  B01D2255/9202 ,  B01J23/58 ,  B01J37/0242 ,  B01J37/0244 ,  B01J37/0248 ,  C04B38/0006 ,  C04B2111/00793 ,  C04B2111/0081 ,  F01N3/0222 ,  F01N3/035 ,  Y02T10/22 ,  C04B35/195 ,  C04B38/0054 ,  C04B38/0074 ,  C04B38/0096 ,  C04B41/5042 ,  C04B41/5045

摘要： A filter catalyst for purifying exhaust gases having a catalytic layer comprising the first catalyst support 2 having an average particle diameter of 1 μm or less, the second catalyst support 3 having an average particle diameter from 1/20 to ½ of the average pore diameter of the filter cellular walls 12 and catalytic ingredients, on the filter cellular walls 12 having an average pore diameter of from 20 to 40 μm, and the catalytic layer having uneven surfaces is used. Since the second catalyst support hardly enters into the pore with a diameter of 20 μm or less, it exists partly on the filter cellular walls and the inside surface of the wall. Therefore, since particles collide with the convex part of the catalytic layer, it becomes possible to collect them easily and the collecting rate for particles and the ability of the particles purification are improved.

摘要翻译： 一种用于净化废气的过滤器催化剂，其具有包含平均粒径为1μm以下的第一催化剂载体2的催化剂层，第二催化剂载体3的平均粒径为平均粒径的1/20至1/2 使用平均孔径为20〜40μm的过滤器多孔壁12和具有不均匀表面的催化剂层的过滤器孔壁12和催化成分。 由于第二催化剂载体几乎不进入直径为20μm或更小的孔，所以其部分存在于过滤器多孔壁和壁的内表面上。 因此，由于粒子与催化剂层的凸部碰撞，因此能够容易地进行收集，能够提高粒子的收集率和粒子的净化能力。

公开(公告)号：US07204965B2

公开(公告)日：2007-04-17

申请号：US10454672

申请日：2003-06-05

申请人： Seiji Okawara ,  Mamoru Nishimura ,  Mikio Ishihara

发明人： Seiji Okawara ,  Mamoru Nishimura ,  Mikio Ishihara

IPC分类号： B01D53/34 ,  B01D53/56 ,  B01D24/00 ,  B01J21/04

CPC分类号： F01N3/0842 ,  B01J35/04 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N2240/20 ,  F01N2330/38 ,  F01N2330/48

摘要： A filter catalyst is for purifying exhaust gases emitted from internal combustion engines and including particulates, and includes a wall-flow honeycomb structure and an upstream-side straight honeycomb structure. The wall-flow honeycomb structure includes inlet cells clogged on the downstream side of the exhaust gases, outlet cells neighboring the inlet cells and clogged on the upstream side of the exhaust gases, filter cellular walls demarcating the inlet cells and the outlet cells and having pores, and a catalytic layer formed on the surface of the filter cellular walls and/or the surface of the pores of the filter cellular walls. The upstream-side straight honeycomb structure is disposed on the upstream side of the exhaust gases with respect to the wall-flow honeycomb structure, is provided integrally with the wall-flow honeycomb structure, and includes upstream-side straight cells in which the exhaust gases flow straight, and upstream-side cellular walls demarcating the upstream-side straight cells.

摘要翻译： 一种过滤器催化剂用于净化从内燃机排出的废气并包括微粒，并且包括壁流蜂窝结构和上游侧直的蜂窝结构。 壁流蜂窝结构体包括在排气的下游侧堵塞的入口单元，与入口单元相邻并在废气上游侧堵塞的出口单元，分隔入口单元和出口单元的多孔壁过滤孔，并具有孔 以及形成在过滤器细胞壁的表面上和/或过滤器细胞壁的孔的表面上的催化层。 上游侧直式蜂窝结构体相对于壁流式蜂窝结构体设置在排气的上游侧，与壁流式蜂窝结构体一体设置，并且包括上游侧直池，其中排气 流动直线，上游侧细胞壁划定上游侧直细胞。

公开(公告)号：US20150204224A1

公开(公告)日：2015-07-23

申请号：US14408410

申请日：2013-09-05

申请人： Shigeki Daido ,  Takashi Fukuroda ,  Naohisa Oyama ,  Kouji Senda ,  Seiji Okawara

发明人： Shigeki Daido ,  Takashi Fukuroda ,  Naohisa Oyama ,  Kouji Senda ,  Seiji Okawara

IPC分类号： F01N3/029 ,  F01N3/04 ,  F01N3/20

CPC分类号： F01N3/0293 ,  F01N3/0222 ,  F01N3/023 ,  F01N3/0232 ,  F01N3/0253 ,  F01N3/029 ,  F01N3/04 ,  F01N3/206 ,  F01N3/2066 ,  F01N3/2882 ,  F01N9/002 ,  F01N13/0097 ,  F01N13/02 ,  F01N2240/22 ,  F01N2290/08 ,  F01N2290/10 ,  F01N2430/04 ,  F01N2560/08 ,  F01N2560/14 ,  Y02T10/47

摘要： A particulate filter for trapping particulate filter which is contained in exhaust gas is arranged in an engine exhaust passage. The particulate filter is provided with exhaust gas inflow passages and exhaust gas outflow passages which are alternately arranged via porous partition walls. Movement promoting control is performed to promote movement of the ash which deposits on the inner circumferences of the exhaust gas inflow passages to the rear parts of the exhaust gas inflow passages. The pressure loss of the particulate filter is detected. When the detected pressure loss is larger than a predetermined upper limit value, PM removal control is performed to remove the particulate matter from the particulate filter.

摘要翻译： 用于捕集废气中的微粒过滤器的微粒过滤器配置在发动机排气通路内。 颗粒过滤器设置有经由多孔分隔壁交替布置的排气流入通道和废气流出通道。 执行运动促进控制以促进沉积在废气流入通道的内周上的灰分向废气流入通道的后部移动。 检测微粒过滤器的压力损失。 当检测到的压力损失大于预定的上限值时，执行PM去除控制以从颗粒过滤器去除颗粒物质。

公开(公告)号：US20100048392A1

公开(公告)日：2010-02-25

申请号：US11922216

申请日：2006-06-20

申请人： Seiji Okawara ,  Takayuki Endo

发明人： Seiji Okawara ,  Takayuki Endo

IPC分类号： B01J23/58 ,  B01J23/02 ,  B01J23/04

CPC分类号： F01N3/2803 ,  B01D53/9454 ,  B01J23/58 ,  B01J35/04 ,  B01J37/0242 ,  F01N3/106 ,  F01N2510/06 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases includes a substrate, and projections. The substrate is provided with straight-flow gas-flow passages. The projections protrude from the straight-flow gas-flow passages in a height of 50 μm or more, and include a precipitate, which is composed of at least one catalytic ingredient selected from the group consisting of alkali metals and alkaline-earth metals.

摘要翻译： 用于净化废气的催化剂包括基材和突起。 基板设有直流气流通道。 突起从直流气流通道突出高度为50μm以上，并且包括由至少一种选自碱金属和碱土金属的催化剂组成的沉淀物。