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1. 发明专利

JP2003062464A Exhaust gas cleaning catalyst for internal combustion engine, exhaust gas cleaning apparatus, and automobile 审中-公开
标题翻译：用于内燃机的排气净化催化剂，排气净化装置和汽车
公开(公告)号：JP2003062464A
公开(公告)日：2003-03-04
申请号：JP2001258100
申请日：2001-08-28
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： HIRATSUKA TOSHIFUMI , KURODA OSAMU , SHINOZUKA NORIHIRO , DOI RYOTA , KITAHARA YUICHI , INOUE TAKESHI , OKUDE KOJIRO , IIZUKA HIDEHIRO , YAMASHITA HISAO , KANAE MASAHITO
IPC分类号： F01N3/28 , B01D53/94 , B01J23/58
CPC分类号： Y02A50/2322
摘要： PROBLEM TO BE SOLVED: To keep a high performance of cleaning NOx, etc., by preventing the exposed area of a noble metal from decreasing due to the migration of an NOx catching component upon exposure to high temperature in a lean NOx catalyst. SOLUTION: The lean NOx catalyst is divided into an NOx catch (alkali) layer 1 and an NOx reaction (noble metal) layer 3, and an NOx catch component migration inhibiting layer 2 is provided between the NOx catch layer and the NOx reaction layer. Thus, the thermal migration of the NOx catch component can be prevented, so that a high cleaning performance can be maintained.
摘要翻译：要解决的问题：为了保持高性能的清洁NOx等，通过防止贵金属的暴露面积由于NOx吸收组分在稀薄NOx催化剂中暴露于高温时的迁移而降低。解决方案：将稀NOx催化剂分为NOx捕集（碱）层1和NOx反应（贵金属）层3，NOx捕获组分迁移抑制层2设置在NOx捕获层和NOx反应层之间。因此，可以防止NOx捕集部件的热迁移，从而可以保持高清洗性能。

2. 发明专利

JP2004167495A Catalyst for cleaning exhaust gas from internal combustion engine 审中-公开
公开(公告)号：JP2004167495A
公开(公告)日：2004-06-17
申请号：JP2004071885
申请日：2004-03-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： DOI RYOTA , IIZUKA HIDEHIRO , HANAOKA HIROSHI , OGAWA TOSHIO , KURODA OSAMU , YAMASHITA HISAO , KITAHARA YUICHI , HIRATSUKA TOSHIFUMI
IPC分类号： F01N3/10 , B01D53/94 , B01J23/58
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas with which nitrogen oxides contained in exhaust gas from an internal combustion engine are highly efficiently removed in the coexistence of oxygen and which is strong against sulfur oxide being a catalyst poisoning substance in the exhaust gas and is durable even in the atmosphere of high teperature and to provide an exhaust gas cleaning method. SOLUTION: This catalyst for cleaning the exhaust gas from the internal combustion engine is obtained by mixing alkaline-earth metal with a precursor of titania as active components on a porous carrier, firing the obtained mixture and depositing a part of the fired body on the compound oxide of an alkaline-earth metal and titanium. This catalyst can highly efficiently remove the nitrogen from the exhaust gas containing excess oxygen and SOx. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2005238168A Exhaust gas purification catalyst and apparatus for internal combustion engine 审中-公开
标题翻译：排气净化催化剂和内燃机的装置
公开(公告)号：JP2005238168A
公开(公告)日：2005-09-08
申请号：JP2004054392
申请日：2004-02-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE HIROKO , KURODA OSAMU , KITAHARA YUICHI , INOUE TAKESHI , HIRATSUKA TOSHIFUMI , SHINOTSUKA NORIHIRO
IPC分类号： F01N3/10 , B01D53/94 , B01J23/58 , B01J37/02 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst having excellent durability capable of maintaining a high NOx purification capacity by physically suppressing both movements via a gas phase of a NOx complementary component (especially, alkaline metal) and a solid phase. SOLUTION: The gas purification catalyst is provided with a dense layer between a cordierite substrate and a support layer formed by carrying a catalytic active component. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决方案：提供一种具有优异的耐久性的排气净化催化剂，能够通过物理地抑制NO x互补组分（特别是碱金属）和固相的气相两种运动来维持高NOx净化能力。解决方案：气体净化催化剂在堇青石基材和通过携带催化活性组分形成的载体层之间设置致密层。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005224682A Exhaust gas purifier for internal engine and method of purfying exhaust gas 审中-公开
标题翻译：用于内燃机的排气净化器及其排气方法
公开(公告)号：JP2005224682A
公开(公告)日：2005-08-25
申请号：JP2004034752
申请日：2004-02-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINOTSUKA NORIHIRO , KURODA OSAMU , KITAHARA YUICHI , INOUE TAKESHI , HIRATSUKA TOSHIFUMI , WATANABE HIROKO , IIZUKA HIDEHIRO
IPC分类号： F01N3/02 , B01D53/94 , B01J23/58 , B01J23/63 , B01J35/04 , F01N3/022 , F01N3/08 , F01N3/10 , F01N3/24 , F01N3/28 , F01N13/02
CPC分类号： F01N3/0842 , B01D53/9422 , B01D53/9431 , B01D53/944 , B01D53/9477 , B01D2255/91 , F01N3/0814 , F01N3/101 , F01N13/009 , F01N13/0093 , F01N2250/02 , F01N2330/02 , F01N2330/06 , F01N2330/10 , F01N2330/12 , F01N2570/14 , Y02A50/2344 , Y02T10/22 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purifier which has a lean NOx catalyst consisting of a catalyst layer containing an NOx-capturing ingredient and supported on a honeycomb substrate invulnerable to alkali attacking and prevents desorption and discharge of captured NOx in the rich spike operation. SOLUTION: A NOx-reducing catalyst having a function of reducing NOx with a reducing agent in the rich or stoichiometric operation, e.g. a three-way catalyst, is arranged in the downstream of the lean NOx catalyst. When the NOx-capturing capacity of the lean NOx catalyst is enhanced by increasing the amount of the NOx-capturing ingredient, captured NOx desorbed in the rich spike operation, if any, can be reduced by the downstream NOx-reducing catalyst. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种排气净化器，其具有由含有NOx捕获成分的催化剂层构成的贫NOx催化剂，负载在不能进行碱侵蚀的蜂窝状基材上，并且能够防止捕获的NOx的脱离和排出丰富的穗操作。解决方案：具有在富或化学计量操作中还原剂还原NOx的功能的NOx还原催化剂，例如，三元催化剂布置在贫NOx催化剂的下游。当通过增加NOx捕获成分的量来提高贫NOx催化剂的NOx捕获能力时，可以通过下游的NOx还原催化剂来减少在富峰操作中释放的捕获的NOx（如果有的话）。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004232530A Diesel particulate filter 审中-公开
标题翻译：柴油颗粒过滤器
公开(公告)号：JP2004232530A
公开(公告)日：2004-08-19
申请号：JP2003021291
申请日：2003-01-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURODA OSAMU , SHINOTSUKA NORIHIRO , HIRATSUKA TOSHIFUMI , WATANABE HIROKO
IPC分类号： F01N3/02 , F01N3/18 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a cleaning device for effectively filtering PM in exhaust gas in a diesel engine, wherein pressure loss/increase caused by removal of the PM is small. SOLUTION: A pore diameter of a porous cellular wall for filtering the PM of a wall flow type monolithic honeycomb filter is inclined so as to be larger at an inlet side of the exhaust gas and smaller at an outlet side of the exhaust gas. Also, the pore diameter is inclined by laminating a plurality of plates having different pore diameters. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于有效地过滤柴油机废气中的PM的清洁装置，其中由PM的去除引起的压力损失/增加小。解决方案：用于过滤壁流式整体式蜂窝过滤器的PM的多孔多孔壁的孔径在排气的入口侧倾斜，并且在废气的出口侧较小。此外，通过层叠多个孔径不同的板来使孔径倾斜。版权所有（C）2004，JPO＆NCIPI

6. 发明专利

JP2005205302A Exhaust gas cleaning catalyst and apparatus for combustion engine 审中-公开
标题翻译：排气清洁催化剂和燃烧发动机装置
公开(公告)号：JP2005205302A
公开(公告)日：2005-08-04
申请号：JP2004013929
申请日：2004-01-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE HIROKO , KURODA OSAMU , KITAHARA YUICHI , INOUE TAKESHI , HIRATSUKA TOSHIFUMI , SHINOTSUKA NORIHIRO
IPC分类号： F01N3/10 , B01D53/94 , B01J23/58 , B01J37/02 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas cleaning catalyst which contains an alkali metal and a noble metal, in which it is restrained that the alkali metal moves to a substrate and deteriorates the NOx capturing capacity of this catalyst and the noble metal is masked with the alkali metal and the thermal durability of which is prevented from being deteriorated. SOLUTION: This exhaust gas cleaning catalyst is provided with an alkali metal layer formed by depositing the alkali metal on a carrier having high compatibility with the alkali metal and a noble metal layer formed by depositing the noble metal on another carrier having low compatibility with the alkali metal. This catalyst is obtained by forming the alkali metal layer as a lower layer and the noble metal layer as an upper layer on the surface of the substrate having low compatibility with the alkali metal. As a result, since the alkali metal and the noble metal are parted from each other and the material of the carrier of the noble metal layer and that of the substrate are formed from the material having low affinity with the alkali metal, the noble metal is hardly masked with the alkali metal and the alkali metal hardly moves to the side of the substrate. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种含有碱金属和贵金属的废气净化催化剂，其中碱金属向基体移动，并且使该催化剂和贵金属的NOx捕获能力恶化金属被碱金属掩蔽，并且防止其耐热性劣化。解决方案：该废气净化催化剂具有通过将碱金属沉积在与碱金属高度相容的载体上形成的碱金属层和通过将贵金属沉积在具有低相容性的另一载体上而形成的贵金属层与碱金属。该催化剂是通过以与碱金属相溶性低的方式形成作为下层的碱金属层和在基材表面上的贵金属层作为上层而获得的。结果，由于碱金属和贵金属彼此分离，贵金属层和基体的载体的材料由与碱金属的亲和性低的材料形成，所以贵金属为几乎不被碱金属掩蔽，碱金属几乎不移动到基板的侧面。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2005103409A Exhaust gas cleaning device of internal combustion engine 审中-公开
标题翻译：内燃机排气净化装置
公开(公告)号：JP2005103409A
公开(公告)日：2005-04-21
申请号：JP2003339049
申请日：2003-09-30
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： SHINOTSUKA NORIHIRO , KURODA OSAMU , KITAHARA YUICHI , INOUE TAKESHI , HIRATSUKA TOSHIFUMI , WATANABE HIROKO
IPC分类号： F01N3/10 , B01D53/94 , B01J23/58 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To solve the technical problem that an alkali metal in a lean NOx catalyst has such properties as to move by heat from the inside of a catalyst layer to a cordierite substrate and causes a decrease in the quantity of the alkali metal in the catalyst layer to degrade the catalytic performance. SOLUTION: In the exhaust gas cleaning device, the resistance to movement of an alkali metal is enhanced by decreasing the contact area between a catalyst layer and cordierite, decreasing the quantity and speed of alkali movement. Thus, erosion caused by the movement of an alkali to the substrate is prevented, and the cleaning capability is increased by increasing the quantity of an alkali metal carried by the substrate. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题为了解决稀有NOx催化剂中的碱金属具有从催化剂层的内部向堇青石基板的热量移动的特性的技术问题，并且导致催化剂层中的碱金属降解催化性能。解决方案：在排气净化装置中，通过减少催化剂层和堇青石之间的接触面积，减少碱运动的量和速度，提高了碱金属的运动阻力。因此，防止了由碱移动到基板的侵蚀，并且通过增加由基板承载的碱金属的量来提高清洗能力。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003343334A Water removing apparatus and method for exhaust emission control device for internal combustion engine 审中-公开
标题翻译：用于内燃机排气控制装置的除水装置和方法
公开(公告)号：JP2003343334A
公开(公告)日：2003-12-03
申请号：JP2002232269
申请日：2002-08-09
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： HIRATSUKA TOSHIFUMI , SHINOZUKA NORIHIRO , KURODA OSAMU , KITAHARA YUICHI , INOUE TAKESHI , DOI RYOTA , IIZUKA HIDEHIRO
IPC分类号： F02D45/00 , F01N3/00 , F01N3/20 , F01N3/22 , F01N3/28 , F01N3/32 , F01N9/00 , F01N13/02
CPC分类号： F01N3/32 , F01N3/005 , F01N3/20 , F01N9/00 , F01N13/0097 , F01N2900/0421 , Y02T10/20 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To solve such a problem wherein water is captured in a catalyst, which leads to the elusion of soluble constituents in the catalyst, resulting in the reduction of the rate of purification when an internal combustion engine is operated for a short time repeatedly in particular.
SOLUTION: This apparatus has: a captured water quantity estimating means for estimating the quantity of the water discharged from the internal combustion engine to be captured in the catalyst; a determination means for determining that the estimated value of the quantity of the captured water reaches a specified quantity predetermined or more; and a means for controlling the removing of the water captured in the catalyst. If the estimated value of the quantity of the water captured in the catalyst exceeds the specified, control is done to remove the water in the catalyst. Since this constitution removes the water captured in the catalyst for preventing the elusion of the soluble constituents in the catalyst, the exhaust emission purification performance of the catalyst is prevented.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了解决在催化剂中捕获水的问题，这导致催化剂中可溶性组分的消失，导致内燃机操作时的净化速率降低特别是很短的时间。解决方案：该装置具有：捕获水量估计装置，用于估计从催化剂中捕获的内燃机排放的水量; 确定装置，用于确定所捕获的水的量的估计值达到预定或更多的规定量; 以及用于控制在催化剂中捕获的水的去除的手段。如果催化剂中捕获的水的量的估计值超过规定值，则进行控制以除去催化剂中的水。由于该结构除去催化剂中捕获的水以防止催化剂中可溶性组分的脱落，所以可以防止催化剂的排气净化性能。版权所有（C）2004，JPO

9. 发明专利

DE69703840T2 未知
公开(公告)号：DE69703840T2
公开(公告)日：2001-07-19
申请号：DE69703840
申请日：1997-06-09
申请人： HITACHI LTD , HONDA MOTOR CO LTD
发明人： HANAOKA HIROSHI , KURODA OSAMU , DOI RYOUTA , IIZUKA HIDEHIRO , OGAWA TOSHIO , YAMASHITA HISAO , AZUHATA SHIGERU , KITAHARA YUICHI , HIRATSUKA TOSHIFUMI , OKUDE KOJIRO , SHINOTSUKA NORIHIRO , MANAKA TOSHIO
IPC分类号： F01N3/20 , B01D53/94 , F01N3/08 , F02D41/02 , F02D41/14
摘要： An exhaust gas purification apparatus for use in an internal combustion engine (99) is disclosed which comprises an exhaust gas duct connected to said engine (99), through which the exhaust gas flows, and a catalyst (18) disposed in said exhaust gas duct, for adsorbing NOx under lean combustion conditions. A manifold catalyst (19) may be disposed in said exhaust gas duct after the engine (99) upstream of said catalyst (18), which has the functions of a three way catalyst and a combustion catalyst. The manifold catalyst (19) arises its working temperature in a short time after engine starting in order to allow the purification of hydrocarbons (HC) and carbon monoxide (CO) immediately after engine starting. Alternatively a three way catalyst or a combustion catalyst may be disposed in said exhaust gas duct at the upstream of said catalyst (18).

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