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1. 发明授权

US06883305B1 Method for cleaning exhaust gas from an internal combustion engine 失效
标题翻译：从内燃机中清除废气的方法
公开(公告)号：US06883305B1
公开(公告)日：2005-04-26
申请号：US09482354
申请日：2000-01-14
申请人： Hidehiro Iizuka , Kojiro Okude , Masato Kaneeda , Kousei Nagayama , Hisao Yamashita , Osamu Kuroda , Yuichi Kitahara
发明人： Hidehiro Iizuka , Kojiro Okude , Masato Kaneeda , Kousei Nagayama , Hisao Yamashita , Osamu Kuroda , Yuichi Kitahara
IPC分类号： F01N9/00 , B01D53/94 , B01J21/06 , B01J23/00 , B01J23/56 , B01J23/58 , F01N3/08 , F01N3/10 , F01N3/20
CPC分类号： B01J23/58 , B01D53/9422 , B01D53/945 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/908 , B01J21/063 , B01J21/066 , B01J23/002 , B01J2523/00 , Y02A50/2324 , Y02T10/22 , B01J2523/22 , B01J2523/24 , B01J2523/3712 , B01J2523/47 , B01J2523/821 , B01J2523/822 , B01J2523/828 , B01J2523/847 , B01J2523/845 , B01J2523/827 , B01J2523/48 , B01J2523/824 , B01J2523/18 , B01J2523/41
摘要： In a method and apparatus for removing nitrogen oxides from the exhaust gas of a lean-burn automobile, a CO adsorbent component, which may, for example be made of Pd, Ru or Ir, is contained in an exhaust gas cleaning catalyst which captures NOx when the air-fuel ratio of exhaust gas is higher than theoretical air-fuel ratio, and reduces the captured NOx when the air-fuel ratio of exhaust gad is less than or equal to the theoretical air-fuel ratio. The catalyst, which includes Rh, Pt, and element selected from among the alkaline and alkaline earth metals (Na, Mg, K, Li, Cs, Sr and Ca), and a CO adsorbent material comprising Pd, Ir or Ru, has a CO desorption capacity that reaches at maximum level at a temperature within the range from 200 to 220° C. when its temperature is increased in a He gas flow at the rate of 5 to 10° C./min, after said catalyst is saturated at 100° C. Exhaust gas having an air-fuel ratio higher than theoretical air-fuel and exhaust gas having an air-fuel ratio less than or equal to the theoretical air-fuel ratio are alternately made to flow to the catalyst.
摘要翻译：在用于从稀燃汽车的废气中除去氮氧化物的方法和装置中，例如由Pd，Ru或Ir制成的CO吸附剂组分包含在捕获NOx的废气清洁催化剂中当排气的空燃比高于理论空燃比时，当排气焓的空燃比小于或等于理论空燃比时，可以减少捕获的NOx。包括Rh，Pt和选自碱金属和碱土金属（Na，Mg，K，Li，Cs，Sr和Ca）的元素和包含Pd，Ir或Ru的CO吸附剂材料的催化剂具有 CO释放能力在200〜220℃的温度范围内达到最大水平，当其温度在5〜10℃/分钟的He气流中增加时，催化剂饱和后 100℃。具有高于理论空燃比的空燃比和空燃比小于或等于理论空燃比的废气交替地流向催化剂。

2. 发明授权

US06841511B2 Internal combustion engine exhaust gas purification apparatus, exhaust gas purification process and exhaust gas purification catalyst 失效
标题翻译：内燃机废气净化装置，废气净化工艺及废气净化催化剂
公开(公告)号：US06841511B2
公开(公告)日：2005-01-11
申请号：US10419884
申请日：2003-04-22
申请人： Masato Kaneeda , Kojiro Okude , Hidehiro Iizuka , Toshio Ogawa , Kousei Nagayama , Hisao Yamashita , Yuichi Kitahara , Osamu Kuroda , Morio Fujitani , Toshifumi Hiratsuka
发明人： Masato Kaneeda , Kojiro Okude , Hidehiro Iizuka , Toshio Ogawa , Kousei Nagayama , Hisao Yamashita , Yuichi Kitahara , Osamu Kuroda , Morio Fujitani , Toshifumi Hiratsuka
IPC分类号： B01D53/94 , B01J21/06 , B01J23/02 , B01J23/32 , B01J23/40 , B01J23/68 , B01J23/72 , B01J23/89 , B01J37/02 , B01J23/58
CPC分类号： B01D53/9422 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/202 , B01D2255/204 , B01D2255/2073 , B01D2255/20746 , B01D2255/20753 , B01D2255/20761 , B01D2258/012 , B01J23/688 , B01J23/8986 , B01J37/0205
摘要： Nitrogen oxides contained in an exhaust gas emitted from a lean-burn engine-mounted internal combustion engines are eliminated with a high efficiency.In an exhaust gas purification apparatus and process for eliminating nitrogen oxides contained in a combustion exhaust gas emitted from an internal combustion engine with a reducing gas such as carbon monoxide, hydrocarbons, etc. contained in the exhaust gas in the presence of a catalyst, a catalyst comprising all of Rh, Pt and Pd, at least one member selected from alkali metals and alkaline earth metals, and Mn or its compound, supported on a porous carrier is used.
摘要翻译：从低燃耗发动机搭载的内燃机排出的废气中含有的氮氧化物被高效率地消除。在排气净化装置中，除去从内燃机排出的燃烧废气中含有的氮氧化物的方法在催化剂存在下包含在废气中的还原气体如一氧化碳，烃等，包含Rh，Pt和Pd全部的催化剂，选自碱金属和碱土金属的至少一种，和使用负载在多孔载体上的Mn或其化合物。

3. 发明授权

US06630115B1 Exhaust emission control process for internal combustion engines 失效
标题翻译：内燃机废气排放控制程序
公开(公告)号：US06630115B1
公开(公告)日：2003-10-07
申请号：US09529636
申请日：2000-04-17
申请人： Masato Kaneeda , Kojiro Okude , Hidehiro Iizuka , Toshio Ogawa , Kousei Nagayama , Hisao Yamashita , Yuichi Kitahara , Osamu Kuroda , Morio Fujitani , Toshifumi Hiratsuka
发明人： Masato Kaneeda , Kojiro Okude , Hidehiro Iizuka , Toshio Ogawa , Kousei Nagayama , Hisao Yamashita , Yuichi Kitahara , Osamu Kuroda , Morio Fujitani , Toshifumi Hiratsuka
IPC分类号： C01B2100
CPC分类号： B01D53/9422 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/202 , B01D2255/204 , B01D2255/2073 , B01D2255/20746 , B01D2255/20753 , B01D2255/20761 , B01D2258/012 , B01J23/688 , B01J23/8986 , B01J37/0205
摘要： In an exhaust gas purification process for eliminating nitrogen oxides contained in a combustion exhaust gas emitted from an internal combustion engine with a reducing gas such as carbon monoxide, hydrocarbons, etc. contained in the exhaust gas in the presence of a catalyst, a catalyst comprising all of Rh, Pt and Pd, at least one member selected from alkali metals and alkaline earth metals, and Mn or its compound, supported on a porous carrier is used.
摘要翻译：在废气净化方法中，在催化剂存在下，除去由内燃机排出的燃烧废气中含有废气中的一氧化碳，烃等还原气体的氮氧化物，使用所有Rh，Pt和Pd，选自碱金属和碱土金属的至少一种，以及负载在多孔载体上的Mn或其化合物。

4. 发明申请

US20050089456A1 Exhaust gas purifcation apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine 审中-公开
标题翻译：内燃机废气净化装置和内燃机废气净化催化剂
公开(公告)号：US20050089456A1
公开(公告)日：2005-04-28
申请号：US10900320
申请日：2004-07-28
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： F01N3/20 , B01D53/94 , F01N3/08 , F02D41/02 , F02D41/14 , B01D53/34
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 exhaust gas containing NOx gas passes, and a catalyst disposed in the exhaust gas duct such that it contacts the exhaust gas. The catalyst chemically adsorbs NOx when 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, adsorbed NOx is catalytically reduced in the presence of a reducing agent when the stoichiometric amount of the oxidizing agent is not larger that of the reducing agent.
摘要翻译：一种用于内燃机的废气净化装置，包括与发动机连接的废气管道，通过该排气气体通过含有NO x气体的废气，以及设置在排气管道中的催化剂，接触废气。当排气中存在的化学计量的气态氧化剂大于废气中存在的用于还原NOx的气态还原剂的催化剂时，催化剂化学吸附NO x，当还原剂的化学计量量不大于还原剂的化学计量时，在还原剂的存在下催化还原吸附的NO x。

5. 发明授权

US6161378A Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine 有权
标题翻译：内燃机废气净化装置及净化废气内燃机催化剂
公开(公告)号：US6161378A
公开(公告)日：2000-12-19
申请号：US202243
申请日：1998-12-10
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： F01N3/20 , B01D53/94 , F01N3/08 , F02D41/02 , F02D41/14 , F01N3/00
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 exhaust gas containing NO.sub.x gas passes, and a catalyst disposed in the exhaust gas duct such that it contacts the exhaust gas. The catalyst chemically adsorbs NO.sub.x when 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 NO.sub.x, adsorbed NO.sub.x is catalytically reduced in the presence of a reducing agent when the stoichiometric amount of the oxidizing agent is not larger that of the reducing agent.
摘要翻译： PCT No.PCT / JP97 / 01955 Sec。 371 1998年12月10日第 102（e）1998年12月10日日期PCT 1997年6月9日PCT公布。出版物WO97 / 47864 日本公报1997年12月18日在内燃机中使用的排气净化装置具备：与发动机连接的排气管道，通过该排气通过含有NOx的废气，以及设置在排气管道内的催化剂，使其与排气接触加油站。当废气中存在的化学计量的气态氧化剂大于用于还原NOx的排气中存在的气态还原剂的化学计量时，催化剂化学吸附NOx，在还原剂的存在下，吸附的NOx被催化还原，氧化剂的化学计量量不大于还原剂的化学计量量。

6. 发明授权

US07093432B2 Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine 有权
标题翻译：内燃机废气净化装置和内燃机排气净化催化剂
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。

7. 发明授权

US06272848B1 Exhaust gas cleaning apparatus and method for internal combustion engine 失效
标题翻译：内燃机废气净化装置及方法
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。

8. 发明授权

US06397582B1 Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine 失效
标题翻译：内燃机废气净化装置和内燃机排气净化催化剂
公开(公告)号：US06397582B1
公开(公告)日：2002-06-04
申请号：US09620650
申请日：2000-07-20
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： F01N300
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。因此，能够有效地使发动机中的贫燃废气的NOx成为无害化。

9. 发明申请

US20070204595A1 Exhaust Gas Purification Apparatus of Internal Combustion Engine and Catalyst for Purifying Exhaust Gas of Internal Combustion Engine 审中-公开
标题翻译：内燃机废气净化装置及内燃机排气净化催化剂
公开(公告)号：US20070204595A1
公开(公告)日：2007-09-06
申请号：US11746313
申请日：2007-05-09
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： F01N3/00
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 exhaust gas containing NOx gas passes, and a catalyst disposed in the exhaust gas duct such that it contacts the exhaust gas. The catalyst chemically adsorbs NOx when 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, adsorbed NOx is catalytically reduced in the presence of a reducing agent when the stoichiometric amount of the oxidizing agent is not larger that of the reducing agent.
摘要翻译：一种用于内燃机的废气净化装置，包括与发动机连接的废气管道，通过该排气气体通过含有NO x气体的废气，以及设置在排气管道中的催化剂，接触废气。当排气中存在的化学计量的气态氧化剂大于废气中存在的用于还原NOx的气态还原剂的催化剂时，催化剂化学吸附NO x，当还原剂的化学计量量不大于还原剂的化学计量时，在还原剂的存在下催化还原吸附的NO x。

10. 发明申请

US20070144143A1 Exhaust gas purification apparatus, exhaust gas purification method, and sulfur component trapping agent for internal combustion engine 审中-公开
标题翻译：废气净化装置，废气净化方法和内燃机用硫成分捕集剂
公开(公告)号：US20070144143A1
公开(公告)日：2007-06-28
申请号：US10593494
申请日：2004-03-24
申请人： Masato Kaneeda , Hidehiro Iizuka , Kazutoshi Higashiyama , Yuichi Kitahara , Osamu Kuroda
发明人： Masato Kaneeda , Hidehiro Iizuka , Kazutoshi Higashiyama , Yuichi Kitahara , Osamu Kuroda
IPC分类号： F01N3/00 , F01N3/10 , F01N7/00
CPC分类号： F01N3/0807 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/085 , F01N3/106 , F01N13/009 , F01N13/0097 , F01N2510/0682 , F01N2570/14 , Y02A50/2344 , Y02T10/24
摘要： An object of the present invention is to provide a new exhaust gas purification apparatus for an internal combustion engine operated under a condition of an air fuel ratio leaner than a theoretical air fuel ratio, a method for purification of exhaust gas and an exhaust gas purification catalyst, which is suitable for suppressing degradation of the NOx purification catalyst by sulfur components. An exhaust gas purification apparatus for an internal combustion engine, which comprises an exhaust gas passage for an internal combustion engine into which exhaust gas of lean air fuel ratio and rich or stoichiometric air fuel ratio flows, a NOx trapping catalyst that functions to trap NOx in the exhaust gas when the air fuel ratio is lean, a sulfur component trapping agent for trapping sulfur components in the exhaust gas, which is disposed before the NOx trapping catalyst, and a catalyst for oxidizing the sulfur components, which is disposed before the sulfur component trapping agent, wherein the sulfur component trapping agent has a trapping rate of 85 % or more of an amount of inflow sulfur in a trapping test at a flow rate of 150 ppm SO3-5% O2—balance being N2 gas per 1.5 moles of the sulfur trapping agent at 300° C. and a space velocity of 30,000/h for 1 hour; and the sulfur component trapping agent has a release rate of sulfur amount of 5 % or less of sulfur trapped in the sulfur component trapping agent in a release test under a flow of a 3000 ppm H2-600 ppm C3H6-3000 ppm O2-3.5 % CO—balance being N2 gas at a temperature elevation rate of 10° C. /min from 250 to 750° C. at an sulfur component trapping agent entrance, after the trapping test.
摘要翻译：本发明的目的是提供一种在比理论空燃比稀薄的空气燃料比的条件下操作的内燃机的新型废气净化装置，废气净化方法和废气净化催化剂，其适用于通过硫成分抑制NOx净化催化剂的降解。一种用于内燃机的废气净化装置，其包括用于内燃机的排气通道，稀燃空气排气和浓空气或化学计量空燃比流过的排气通道，用于捕集NOx的NOx捕集催化剂在空燃比稀的情况下的废气，用于捕集在NOx捕集催化剂之前的排气中的硫成分的硫成分捕获剂和硫成分的氧化催化剂，捕集剂，其中所述硫成分捕获剂在150ppm SO 3 -5％O的流量下捕获试验中的流入硫的捕获率为85％以上 > 2平衡物为N 2气体/ 300摩尔的捕集剂，300℃/ h的空速1小时; 并且在3,000ppm H 2 -200ppm的流量下，在脱模试验中，硫成分捕集剂的硫量的释放速率为硫成分捕获剂中捕集的硫的5％以下 C3H6-3000ppm O2-3.5％CO平衡为N 2气体，温度升高速率为10℃/ min，从250℃升至750℃，一种硫成分捕获剂入口，经过捕集试验。

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