公开(公告)号：US5937637A

公开(公告)日：1999-08-17

申请号：US675963

申请日：1996-07-05

申请人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

发明人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

IPC分类号： F01N3/02 ,  F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N9/00 ,  F01N13/02 ,  F01N13/04 ,  F02M25/07 ,  F01N3/00

CPC分类号： F01N3/0835 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/2093 ,  F01N2240/02 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2410/12 ,  F01N3/20 ,  F02M26/15

摘要： A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent 4 in the initial period of time from starting of an engine until the catalyst 8 becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent 4 begins to be desorbed therefrom substantially simultaneously with the time when the catalyst 8 begins to function. A large quantity of unburnt hydrocarbons which are emitted from an engine immediately after the starting of the engine are prevented from being externally discharged without being treated.

摘要翻译： 公开了一种用于净化汽车中使用的废气的系统，其在外界不排出未燃烧的烃，直到催化剂变得活跃。 在催化剂的上游设置吸附剂。 吸附剂的上游部分和吸附剂和催化剂之间的部分设置有热交换器，用于控制吸附剂的温度升高并促进催化剂的温度升高。 在发动机起动至催化剂8变为活性的初始时间段内，未燃烧的烃被吸附剂4吸收。 以这样的方式进行温度控制，即当催化剂8开始起作用时，被吸附剂4吸附的未燃烧的碳氢化合物基本上同时脱附。 在发动机起动之后立即从发动机排出的大量未燃烧的碳氢化合物被防止被外部排出而不被处理。

公开(公告)号：US5560201A

公开(公告)日：1996-10-01

申请号：US382402

申请日：1995-02-01

申请人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

发明人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

IPC分类号： F01N3/02 ,  F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N9/00 ,  F01N13/02 ,  F01N13/04 ,  F02M25/07 ,  F01N3/30

CPC分类号： F01N3/0835 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/2093 ,  F01N2240/02 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2410/12 ,  F01N3/20 ,  F02M26/15

摘要： A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent in the initial period of time from starting of an engine until the catalyst becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent begins to be desorbed therefrom substantially simultaneously with the time when the catalyst begins to function. A large quantity of unburnt hydrocarbons which are emitted from an engine immediately after the starting of the engine are prevented from being externally discharged without being treated.

公开(公告)号：US5388405A

公开(公告)日：1995-02-14

申请号：US953218

申请日：1992-09-30

申请人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

发明人： Masakatsu Fujishita ,  Takeshi Atago ,  Akio Honji ,  Osamu Kuroda ,  Toshio Ogawa ,  Noriko Watanabe ,  Minoru Osuga

IPC分类号： F01N3/02 ,  F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N9/00 ,  F01N13/02 ,  F01N13/04 ,  F02M25/07

CPC分类号： F01N3/0835 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/2093 ,  F01N2240/02 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2410/12 ,  F01N3/20 ,  F02M26/15

摘要： A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent in the initial period of time from starting of an engine until the catalyst becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent begins to be desorbed therefrom substantially simultaneously with the time when the catalyst begins to function. A large quantity of unburnt hydrocarbons which are emitted from an engine immediately after the starting of the engine are prevented from being externally discharged without being treated.

摘要翻译： 公开了一种用于净化汽车中使用的废气的系统，其在外界不排出未燃烧的烃，直到催化剂变得活跃。 在催化剂的上游设置吸附剂。 吸附剂的上游部分和吸附剂和催化剂之间的部分设置有热交换器，用于控制吸附剂的温度升高并促进催化剂的温度升高。 未燃烧的碳氢化合物在起动发动机直到催化剂变成活性的初始阶段被吸附剂吸收。 以这样的方式进行温度控制，使得吸附在吸附剂上的未燃烧的碳氢化合物在催化剂开始起作用时基本同时脱附。 在发动机起动之后立即从发动机排出的大量未燃烧的碳氢化合物被防止被外部排出而不被处理。

公开(公告)号：US5577383A

公开(公告)日：1996-11-26

申请号：US351167

申请日：1994-11-30

申请人： Osamu Kuroda ,  Hisao Yamashita ,  Akio Honji ,  Noriko Watanabe ,  Toshio Ogawa ,  Hiroshi Miyadera ,  Takeshi Atago

发明人： Osamu Kuroda ,  Hisao Yamashita ,  Akio Honji ,  Noriko Watanabe ,  Toshio Ogawa ,  Hiroshi Miyadera ,  Takeshi Atago

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/32 ,  F01N9/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14

CPC分类号： F01N3/222 ,  F01N13/009 ,  F01N3/20 ,  F01N3/2053 ,  F01N3/22 ,  F01N3/32 ,  F01N9/00 ,  F02D41/0255 ,  F02D41/1446 ,  F01N2390/02 ,  F01N2430/06 ,  Y02T10/22 ,  Y02T10/26 ,  Y02T10/47

摘要： An apparatus for purifying an exhaust gas emitted from an internal combustion engine, particularly, immediately after starting of the engine, includes a mechanism for reducing the time required to heat a catalyst converter to the activation temperature. The exhaust gas is passed through a preliminary catalyst close to the engine and then through a main catalyst downstream of the catalyst. The engine is operated with an air-fuel mixture which is richer than the amount indicated by the stoichiometric air/fuel ratio for a period of time from when engine is started until the main catalyst is heated to a temperature at which the catalyst can sufficiently perform its purifying capability. The preliminary catalyst is enabled to function at lower temperatures by combusting the exhaust gas which is generated during a rich air-fuel mixture condition. The main catalyst can be heated with the generated combustion heat, resulting in an enhancement in exhaust gas purifying capability.

摘要翻译： 一种用于净化从内燃机排出的排气的装置，特别是在发动机起动之后，包括用于将催化剂转化器加热至活化温度所需的时间的机构。 废气通过靠近发动机的预催化剂，然后通过催化剂下游的主催化剂。 发动机运行时，空气燃料混合物比从发动机起动直到主催化剂加热到催化剂能够充分运行的温度的时间段内的化学计量空气/燃料比所表示的量更丰富 其净化能力。 通过燃烧在富空燃混合条件下产生的废气，预催化剂能够在较低温度下起作用。 可以利用产生的燃烧热来加热主催化剂，从而提高废气净化能力。

公开(公告)号：US5379586A

公开(公告)日：1995-01-10

申请号：US948265

申请日：1992-09-21

申请人： Akio Honji ,  Toshio Ogawa ,  Osamu Kuroda ,  Hisao Yamashita ,  Takahiro Tachi ,  Hiroshi Miyadera ,  Masakatsu Fujishita

发明人： Akio Honji ,  Toshio Ogawa ,  Osamu Kuroda ,  Hisao Yamashita ,  Takahiro Tachi ,  Hiroshi Miyadera ,  Masakatsu Fujishita

IPC分类号： F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N13/02 ,  F02B1/04 ,  F02D9/04

CPC分类号： F01N3/0835 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/0807 ,  F01N3/0871 ,  F01N3/2006 ,  F01N3/2013 ,  F01N3/22 ,  F01N3/222 ,  F01N2240/02 ,  F01N2240/10 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2260/14 ,  F01N3/20 ,  F02B1/04 ,  F02D9/04 ,  Y02T10/26

摘要： An exhaust gas cleaning system has a catalyzer provided in the exhaust passage of the engine and an adsorbent provided upstream from the catalyzer. The adsorbent temporarily adsorbs unburned hydrocarbons emitted in large amounts immediately after the engine is started. The system provides an amount of air required to substantially eliminate unburned hydrocarbons, based on the temperature of the adsorbent and the oxygen concentration in exhaust gas upstream from the catalyzer. An air supplying unit is provided upstream from the adsorbent. A temperature sensor is provided for the adsorbent. An oxygen sensor is provided at the inlet of the catalyzer. A control unit calculates the amount of air (oxygen) necessary for the catalyzer to convert the unburned hydrocarbons released from the adsorbent, based on signals from the temperature sensor and the oxygen sensor and the exhaust flow rate. The control unit accordingly controls the air supplying unit.

摘要翻译： 排气清洁系统具有设置在发动机的排气通道中的催化剂和设置在催化剂上游的吸附剂。 发动机启动后，吸附剂临时吸附大量排放的未燃碳氢化合物。 该系统基于吸附剂的温度和催化剂上游的排气中的氧浓度，提供基本上消除未燃烧的烃所需的空气量。 空气供给单元设置在吸附剂的上游。 为吸附剂提供温度传感器。 在催化剂的入口处设置氧气传感器。 控制单元基于来自温度传感器和氧传感器的信号以及排气流量来计算催化剂转化从吸附剂释放的未燃烧烃所需的空气量（氧气）。 控制单元相应地控制空气供应单元。

公开(公告)号：US6045764A

公开(公告)日：2000-04-04

申请号：US638811

申请日：1996-04-29

申请人： Hidehiro Iizuka ,  Osamu Kuroda ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Takeshi Atago ,  Hiroatsu Tokuda ,  Takao Ishikawa ,  Hiroshi Hanaoka ,  Hiroshi Tobita ,  Shinichi Ichikawa ,  Toshifumi Hiratsuka

发明人： Hidehiro Iizuka ,  Osamu Kuroda ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Takeshi Atago ,  Hiroatsu Tokuda ,  Takao Ishikawa ,  Hiroshi Hanaoka ,  Hiroshi Tobita ,  Shinichi Ichikawa ,  Toshifumi Hiratsuka

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/58 ,  B01J23/63 ,  B01J35/00 ,  B01J37/02

CPC分类号： B01J37/0244 ,  B01D53/9418 ,  B01J23/63 ,  B01J35/0006 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/204 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/908 ,  Y02T10/24

摘要： An exhaust gas purifying catalyst is provided for purifying NOx contained in an exhaust gas from an internal combustion engine of a vehicle operated at a high air fuel ratio due to excessive oxygen, using unburnt HC or CO in the exhaust gas as a reducing agent. The catalyst comprises platinum, strontium and a rare earth metal, as active components, each supported on a support of inorganic oxide. The active components of the catalyst include platinum of 0.01-3.7 by wt ratio, strontium of 0.01-55 by wt ratio and a rare earth metal of 0.01-36 wt ratio, per the inorganic oxide of 100 by wt ratio.

摘要翻译： 提供一种废气净化催化剂，用于净化来自由于过量的氧气而以高空燃比操作的车辆的内燃机中的废气中的NOx，使用废气中的未燃HC或CO作为还原剂。 催化剂包括铂，锶和稀土金属作为活性组分，各自负载在无机氧化物的载体上。 催化剂的活性组分包括0.01-3.7重量％的铂，0.01-55重量％的锶，0.01-36重量％的稀土金属，相对于100重量％的无机氧化物。

公开(公告)号：US5517820A

公开(公告)日：1996-05-21

申请号：US214303

申请日：1994-03-17

申请人： Osamu Kuroda ,  Takahiro Tachi ,  Miho Saito ,  Toshio Ogawa ,  Noriko Watanabe ,  Akira Kato ,  Hiroshi Miyadera

发明人： Osamu Kuroda ,  Takahiro Tachi ,  Miho Saito ,  Toshio Ogawa ,  Noriko Watanabe ,  Akira Kato ,  Hiroshi Miyadera

IPC分类号： F01N3/28 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N13/02 ,  F02B1/04 ,  F02D45/00

CPC分类号： F01N3/0835 ,  B01D53/9495 ,  F01N13/009 ,  F01N3/0878 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2410/12 ,  F01N2570/14 ,  F01N3/20 ,  F02B1/04 ,  Y02T10/20 ,  Y02T10/22

摘要： An apparatus is provided for purifying an exhaust gas discharged from an internal combustion engine, which comprises a first exhaust gas passage including a nitrogen oxide removing catalyst and a three way catalyst, a second exhaust gas passage including the three way catalyst, a gas flow regulator for selectively directing the exhaust gas to the first and second exhaust gas passages, and a control unit which directs the exhaust gas to the first exhaust gas passage (thereby passing exhaust gas first through the nitrogen oxide removing catalyst and thereafter through the three way catalyst) when the temperature of the nitrogen oxide removing catalyst is within a hydrocarbon adsorbing range of temperature thereof while the engine is warming up, and to the second exhaust gas passage (thereby passing the exhaust gas only through the three way catalyst) when the temperature of the nitrogen oxide removing catalyst exceeds the hydrocarbon adsorbing range of temperature thereof.

摘要翻译： 提供了一种用于净化从内燃机排出的废气的装置，其包括包括氮氧化物除去催化剂和三元催化剂的第一废气通道，包括三元催化剂的第二排气通道，气流调节器 用于将废气选择性地引导到第一和第二废气通道;以及控制单元，其将废气引导到第一废气通道（从而首先通过废气首先通过氮氧化物除去催化剂，然后通过三元催化剂） 当发动机升温时氮氧化物除去催化剂的温度在其烃吸附范围内，并且当第二排气通道（从而仅通过三元催化剂使排气通过时） 氮氧化物除去催化剂超过其烃吸附温度范围。

公开(公告)号：US07093432B2

公开(公告)日：2006-08-22

申请号：US10119075

申请日：2002-04-10

申请人： Hiroshi Hanaoka ,  Osamu Kuroda ,  Ryouta Doi ,  Hidehiro Iizuka ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Toshifumi Hiratsuka ,  Kojiro Okude ,  Norihiro Shinotsuka ,  Toshio Manaka

发明人： Hiroshi Hanaoka ,  Osamu Kuroda ,  Ryouta Doi ,  Hidehiro Iizuka ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Toshifumi Hiratsuka ,  Kojiro Okude ,  Norihiro Shinotsuka ,  Toshio Manaka

IPC分类号： F01N3/10

CPC分类号： F01N11/002 ,  B01D53/9422 ,  B01D53/9495 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/2047 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/91 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0878 ,  F01N13/009 ,  F01N2250/12 ,  F01N2430/06 ,  F01N2510/06 ,  F01N2570/04 ,  F01N2610/03 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/1455 ,  F02D41/146 ,  F02D41/1462 ,  F02D41/1463 ,  F02D41/1465 ,  F02D2200/0806 ,  F02D2200/0814 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas purification apparatus for use in an internal combustion engine comprises an exhaust gas duct connected to the engine through which the exhaust gas containing NOx gas passes and a catalyst so disposed in the exhaust gas duct that it contacts with the exhaust gas.The catalyst chemically adsorbs NOx under the condition that a stoichiometric amount of a gaseous oxidizing agent present in the exhaust gas is larger than that of a gaseous reducing agent present in the exhaust gas for reducing NOx, while NOx being adsorbed is catalytically reduced in the presence of the reducing agent under the condition that the stoichiometric amount of the oxidizing agent is not larger that of the reducing agent.Thereby, NOx, the lean burn exhaust gas in the engine can be effectively made harmlessly.

摘要翻译： 在内燃机中使用的废气净化装置具备：与发动机连接的排气管道，通过该排气气体使含有NOx的废气通过，排气管与排气相接触的催化剂。 催化剂在排气中存在的化学计量的气态氧化剂大于存在于用于还原NOx的排气中的气态还原剂的化学计量量的条件下化学吸附NOx，而在存在下催化还原NOx 的还原剂在氧化剂的化学计量不大于还原剂的化学计量量的条件下进行。 由此，能够有效地使发动机中的稀燃废气成为无害化的NOx。

公开(公告)号：US5972828A

公开(公告)日：1999-10-26

申请号：US943151

申请日：1997-10-03

申请人： Ryouta Doi ,  Hidehiro Iizuka ,  Hiroshi Hanaoka ,  Toshio Ogawa ,  Osamu Kuroda ,  Hisao Yamashita ,  Yuichi Kitahara ,  Toshifumi Hiratsuka

发明人： Ryouta Doi ,  Hidehiro Iizuka ,  Hiroshi Hanaoka ,  Toshio Ogawa ,  Osamu Kuroda ,  Hisao Yamashita ,  Yuichi Kitahara ,  Toshifumi Hiratsuka

IPC分类号： B01D53/94 ,  B01J23/02 ,  B01J23/54 ,  B01J23/58 ,  B01J23/63 ,  B01J33/00 ,  B01J23/10

CPC分类号： B01D53/945 ,  B01J23/63 ,  Y02T10/22

摘要： In order to remove nitrogen oxide in an exhaust gas released from a lean burn engine, a catalyst: supporting an rare earth metal, an alkali earth metal, titanium, a noble metal, and magnesium on the surface of a porous carrier made of inorganic oxides is provided. In order to manufacture the catalyst, the rare earth metal is supported onto the surface of the carrier first, subsequently the alkali earth metal other than magnesium and titanium are supported, the noble metal is supported, and magnesium is supported finally onto the surface of the carrier.The catalyst of the present invention is scarcely poisoned by SOx in the exhaust gas released from the lean burn engine, and has a heat resistivity durable against high speed driving.

摘要翻译： 为了除去从稀燃发动机排出的废气中的氮氧化物，在由无机氧化物制成的多孔质载体的表面上含有稀土金属，碱土金属，钛，贵金属和镁的催化剂 被提供。 为了制造催化剂，首先将稀土金属负载在载体的表面上，随后负载除了镁和钛之外的碱土金属，负载贵金属，最后将镁负载在 载体 本发明的催化剂在从稀燃发动机排出的排气中几乎不被SOx中毒，具有耐高速行驶耐热性的耐热性。

公开(公告)号：US06272848B1

公开(公告)日：2001-08-14

申请号：US09116708

申请日：1998-07-17

申请人： Kojiro Okude ,  Hidehiro Iizuka ,  Osamu Kuroda ,  Ryouta Doi ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Toshifumi Hiratsuka ,  Norihiro Shinotsuka

发明人： Kojiro Okude ,  Hidehiro Iizuka ,  Osamu Kuroda ,  Ryouta Doi ,  Toshio Ogawa ,  Hisao Yamashita ,  Shigeru Azuhata ,  Yuichi Kitahara ,  Toshifumi Hiratsuka ,  Norihiro Shinotsuka

IPC分类号： F01N300

CPC分类号： F01N3/085 ,  B01D53/9495 ,  F01N3/0842 ,  F01N2570/04 ,  F02D41/0285 ,  F02D2041/288

摘要： An apparatus and method of highly efficiently purifying nitrogen oxides are provided. An NOx chemisorption reduction catalyst chemically absorbs NOx under a condition that an exhaust gas of an internal combustion engine is an oxidizing atmosphere and deoxidizes adsorbed NOx under a reducing atmosphere. An SOx absorbent absorbs SOx contained in the exhaust gas of the oxidizing atmosphere, and deoxidizes and release SOx absorbed in the reducing atmospheric exhaust gas. The catalyst and absorbent are arranged in the exhaust path to purify the exhaust gas while preventing or suppressing SOx-poisoning of the NOx chemisorption reduction catalyst.

摘要翻译： 提供了高效净化氮氧化物的装置和方法。 NOx化学吸附还原催化剂在内燃机的排气是氧化气氛并在还原气氛下脱氧吸附的NOx的条件下，化学吸收NOx。 SO x吸收剂吸收氧化气氛的废气中所含的SOx，并且还原和释放在还原气氛废气中吸收的SO x。 催化剂和吸收剂布置在排气路径中以净化废气，同时防止或抑制NOx化学吸附还原催化剂的SOx中毒。