公开(公告)号：US5713199A

公开(公告)日：1998-02-03

申请号：US624034

申请日：1996-03-27

申请人： Shinichi Takeshima ,  Tetsuro Kihara ,  Takamitsu Asanuma ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

发明人： Shinichi Takeshima ,  Tetsuro Kihara ,  Takamitsu Asanuma ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

IPC分类号： F02D45/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/10

CPC分类号： F01N3/0842 ,  B01D53/9495 ,  F01N11/007 ,  F02D41/0275 ,  F01N2550/03 ,  F01N2570/14 ,  F02D2200/0806 ,  F02D2200/0808 ,  F02D2200/0814 ,  F02D2200/0816 ,  F02D41/1441 ,  Y02T10/47

摘要： A device for detecting deterioration of a NO.sub.x absorbent arranged in the exhaust passage of an engine. An O.sub.2 sensor generating a current proportional to the air-fuel ratio is arranged in the exhaust passage downstream of the NO.sub.x absorbent. When the amount of NO.sub.x absorbed in the NO.sub.x absorbent is almost zero or after the amount of NO.sub.x absorbed in the NO.sub.x absorbent is made almost zero, the air-fuel ratio of the air-fuel mixture is changed from lean to rich, and the amount of oxygen stored in the NO.sub.x absorbent is detected from the output signal of the O.sub.2 sensor at this time. Further, the NO.sub.x absorbing capability is found by using this detected oxygen amount.

摘要翻译： 一种用于检测布置在发动机的排气通道中的NOx吸收剂的劣化的装置。 产生与空燃比成比例的电流的O 2传感器设置在NOx吸收剂下游的排气通道中。 当NOx吸收剂中吸收的NOx的量几乎为零时，或在NOx吸收剂中吸收的NOx的量几乎为零之后，空气 - 燃料混合物的空燃比从浓度变为富， 此时从O 2传感器的输出信号中检测出存储在NOx吸收剂中的氧。 此外，通过使用该检测到的氧量来发现NOx吸收能力。

公开(公告)号：US5402641A

公开(公告)日：1995-04-04

申请号：US94799

申请日：1993-07-20

申请人： Kenji Katoh ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Masato Goto ,  Tetsuro Kihara ,  Takamitsu Asanuma ,  Fumitada Murakami

发明人： Kenji Katoh ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Masato Goto ,  Tetsuro Kihara ,  Takamitsu Asanuma ,  Fumitada Murakami

IPC分类号： F01N3/08 ,  B01D53/04 ,  B01D53/86 ,  B01D53/94 ,  F01N3/20 ,  F01N3/24 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14 ,  F02D45/00

CPC分类号： B01D53/9481 ,  B01D53/0454 ,  B01D53/8696 ,  B01D53/9422 ,  B01D53/9495 ,  F01N13/009 ,  F01N3/0842 ,  F02D41/028 ,  F02D41/1446 ,  F02D41/1475 ,  B01D2255/2042 ,  B01D2255/20761 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2390/02 ,  F01N2430/06 ,  F01N2570/04 ,  F01N3/20 ,  F02D2200/0606 ,  Y02T10/22

摘要： An NOx absorbent is installed in an exhaust conduit of an internal combustion engine capable of fuel combustion at lean air-fuel ratios. An oxygen concentration is repeatedly or continuously decreased by, for example, switching the air-fuel from the lean air-fuel ratio to a stoichiometric or rich air fuel ratio when the exhaust gas temperature is higher than 550.degree. C. or when NOx absorbent temperature is higher than 500.degree. C. As a result, the SOx absorbed in the NOx absorbent during lean air-fuel ratio, low temperature operation is released from the NOx absorbent, and the SOx-poisoned NOx absorbent is recovered.

摘要翻译： NOx吸收剂安装在能够以稀空燃比燃料燃烧的内燃机的排气管道中。 当废气温度高于550℃时，或者当NOx吸收温度高于550℃时，通过例如将空气燃料从稀空燃比切换到理论空燃比或浓空气燃料比来重复或连续地降低氧浓度 高于500℃。结果，在稀空燃比期间吸收在NOx吸收剂中的SO x，低温操作从NOx吸收剂释放，并且回收了SOx中毒的NOx吸收剂。

公开(公告)号：US5715679A

公开(公告)日：1998-02-10

申请号：US620768

申请日：1996-03-22

申请人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

发明人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F01N3/10

CPC分类号： B01D53/9481 ,  B01D53/9495 ,  F01N11/00 ,  F01N3/0842 ,  F01N3/0871 ,  F02D41/0275 ,  F02D41/1441 ,  F02D2200/0806 ,  F02D41/1402 ,  Y02T10/47

摘要： An exhaust purification device of an engine providing a NO.sub.x absorbent arranged in the exhaust passage. An O.sub.2 sensor generating a current proportional to the air-fuel ratio is arranged in the engine exhaust passage downstream of the NO.sub.x absorbent. The amount of NO.sub.x actually absorbed in the NO.sub.x absorbent at the time of release of the NO.sub.x is calculated on the basis of the output signal of this O.sub.2 sensor. On the basis of this calculated amount of NO.sub.x, correction is made so that the estimated amount of NO.sub.x represents the actual amount of absorption of NO.sub.x. When this corrected estimated amount of NO.sub.x reaches a set value, the action of releasing the NO.sub.x from the NO.sub.x absorbent is carried out.

摘要翻译： 发动机的排气净化装置，其设置在排气通路内。 产生与空燃比成比例的电流的O 2传感器布置在NOx吸收剂下游的发动机排气通道中。 基于该O2传感器的输出信号计算在NOx释放时在NOx吸收剂中实际吸收的NOx的量。 基于该计算出的NOx量，进行校正，使得NOx的估计量表示NOx的实际吸收量。 当该修正的NOx估计量达到设定值时，进行从NOx吸收剂释放NOx的动作。

公开(公告)号：US5483795A

公开(公告)日：1996-01-16

申请号：US295917

申请日：1994-09-15

申请人： Kenji Katoh ,  Tokuta Inoue ,  Hidetaka Nohira ,  Kiyoshi Nakanishi ,  Satoshi Iguchi ,  Tetsuro Kihara ,  Masato Gotoh ,  Takamitsu Asanuma ,  Hiroshi Okano ,  Jun Harada ,  Shinichi Takeshima ,  Masahiko Sugiyama ,  Shigenori Sakurai ,  Kenji Ohkubo ,  Mikio Murachi

发明人： Kenji Katoh ,  Tokuta Inoue ,  Hidetaka Nohira ,  Kiyoshi Nakanishi ,  Satoshi Iguchi ,  Tetsuro Kihara ,  Masato Gotoh ,  Takamitsu Asanuma ,  Hiroshi Okano ,  Jun Harada ,  Shinichi Takeshima ,  Masahiko Sugiyama ,  Shigenori Sakurai ,  Kenji Ohkubo ,  Mikio Murachi

IPC分类号： B01D53/30 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00 ,  F01N11/00 ,  F02B1/04 ,  F02D41/02

CPC分类号： B01D53/9481 ,  B01D53/30 ,  B01D53/9495 ,  F01N11/007 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N9/00 ,  F02D41/0275 ,  F01N2240/16 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2430/06 ,  F01N2550/03 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03 ,  F01N3/20 ,  F02B1/04 ,  Y02T10/47

摘要： An NO.sub.x absorber (18) is arranged in an exhaust passage of an internal combustion engine. The NO.sub.x absorber (18) absorbs the NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorber (18) is lean while releases the absorbed NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorber (18) becomes the stoichiometric air-fuel ratio or rich. An air-fuel ratio sensor (22) is arranged in the exhaust passage downstream of the NO.sub.x absorber (18). When the air-fuel ratio detected by the air-fuel ratio sensor (22) is switched from lean to rich after the air-fuel ratio of the exhaust gas flowing into NO.sub.x absorber (18) is switched from lean to rich, it is decided that the releasing action of NO.sub.x from the NO.sub.x absorber (18) is completed.

摘要翻译： PCT No.PCT / JP94 / 00050 Sec。 371日期1994年9月15日 102（e）1994年9月15日PCT 1994年1月14日PCT PCT。 公开号WO94 / 17291 日期为1994年8月4日。在内燃机的排气通道中设置NOx吸收器（18）。 当吸入NOx吸收器（18）的废气的空燃比是稀的时，NOx吸收器（18）吸收NOx，同时当流入NOx吸收器的排气的空燃比释放吸收的NOx 18）成为化学计量空燃比或浓。 空气燃料比传感器（22）布置在NOx吸收器（18）下游的排气通道中。 在空气燃料比传感器（22）检测出的空燃比在从稀薄变为富余的排气的空燃比变为富时，将从稀燃转为浓， 来自NOx吸收器（18）的NOx的释放动作结束。

公开(公告)号：US5423181A

公开(公告)日：1995-06-13

申请号：US114894

申请日：1993-09-01

申请人： Kenji Katoh ,  Satoshi Iguchi ,  Tetsuro Kihara ,  Masato Gotoh ,  Shinichi Takeshima ,  Takamitsu Asanuma ,  Fumitada Murakami

发明人： Kenji Katoh ,  Satoshi Iguchi ,  Tetsuro Kihara ,  Masato Gotoh ,  Shinichi Takeshima ,  Takamitsu Asanuma ,  Fumitada Murakami

IPC分类号： F01N3/08 ,  F01N3/24 ,  F01N9/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/20

CPC分类号： F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F02D41/0275 ,  F02D41/1475 ,  F02D41/1487 ,  Y02T10/47

摘要： An engine comprising an exhaust passage having therein a NO.sub.x absorbent which absorbs the NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent is lean and releases the absorbed NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent becomes the stoichiometric air-fuel ratio or rich. When the air-fuel ratio of the air-fuel mixture should be changed over from lean to the stoichiometric air-fuel ratio, the air-fuel ratio of the air-fuel mixture is temporarily made rich and is then made the stoichiometric air-fuel ratio.

摘要翻译： 一种发动机，包括排气通道，其中具有NOx吸收剂，其当流入NOx吸收剂的排气的空燃比是贫的时吸收NOx，并且当流入所述NOx的废气的空燃比 NOx吸收剂成为化学计量空燃比或浓度。 当空气燃料混合物的空燃比应当从稀薄转换到理论空燃比时，空气 - 燃料混合物的空燃比暂时变浓，然后制成化学计量空气燃料 比。

公开(公告)号：US5450722A

公开(公告)日：1995-09-19

申请号：US196144

申请日：1994-02-14

申请人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Kenji Katoh ,  Tetsuro Kihara

发明人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Kenji Katoh ,  Tetsuro Kihara

IPC分类号： B01D53/04 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00 ,  F01N13/02 ,  F02B1/04 ,  F02D41/02 ,  F02D41/14

CPC分类号： B01D53/9481 ,  B01D53/0454 ,  B01D53/9445 ,  B01D53/9495 ,  F01N13/009 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N9/005 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/146 ,  F02D41/1462 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2550/03 ,  F01N2570/12 ,  F01N2610/03 ,  F01N3/20 ,  F02B1/04 ,  F02D2200/0806 ,  F02D2200/0811 ,  F02D41/1446 ,  Y02T10/22 ,  Y02T10/47

摘要： A NO.sub.x absorbent (17) is disposed in an exhaust passage of an internal combustion engine. This NO.sub.x absorbent (17) absorbs the NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent (17) is lean and releases the absorbed NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent (17) becomes rich. When making the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent (17) rich to release the NO.sub.x from the NO.sub.x absorbent (17), the degree of richness is made larger and the time the ratio is made rich is made shorter the higher the temperature of the NO.sub.x absorbent (17).

摘要翻译： PCT No.PCT / JP93 / 00777 Sec。 371日期1994年2月14日 102（e）1994年2月14日PCT提交1993年6月10日PCT公布。 公开号WO93 / 25805 日期1999年12月23日。NOx吸收剂（17）设置在内燃机的排气通道中。 当NOx流入NOx吸收剂（17）的废气的空燃比是贫的时，该NOx吸收剂（17）吸收NOx，并且当流入NOx吸收剂的废气的空燃比释放吸收的NOx 17）变得富有。 当使排出的废气流入富含NO x的NO x吸收剂（17）中的NOx排出的空燃比时，使浓度越大，浓度越高的时间变短 NOx吸收剂（17）的温度越高。

公开(公告)号：US5473890A

公开(公告)日：1995-12-12

申请号：US256922

申请日：1994-07-29

申请人： Shinichi Takeshima ,  Satomi Seto ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Kiyoshi Nakanishi ,  Kenji Katoh

发明人： Shinichi Takeshima ,  Satomi Seto ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Kiyoshi Nakanishi ,  Kenji Katoh

IPC分类号： B01D53/04 ,  B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00 ,  F01N13/02 ,  F02B1/04 ,  F02D41/02

CPC分类号： F01N3/085 ,  B01D53/0454 ,  B01D53/8637 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F02D41/0275 ,  F02D41/0285 ,  F01N2240/18 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03 ,  F02B1/04 ,  Y02T10/47

摘要： An NO.sub.x absorbent (19) which absorbs NO.sub.x when an air-fuel ratio of an inflowing exhaust gas is lean, while releases the absorbed NO.sub.x when lowering an oxygen concentration in the inflowing exhaust gas, is arranged in an exhaust passage of an internal combustion engine. An SO.sub.x absorbent (18) which absorbs SO.sub.x when the air-fuel ratio of the inflowing exhaust gas is lean, while releases the absorbed SO.sub.x when the air-fuel ratio of the inflowing exhaust gas is made rich is arranged in the exhaust passage on the upstream side of the NO.sub.x absorbent (19). When the lean air-fuel mixture is burned, the SO.sub.x is absorbed into the SO.sub.x absorbent (18) and, at the same time, the NO.sub.x is absorbed into the NO.sub.x absorbent (19), and when the air-fuel ratio of the air-fuel mixture is switched from lean to rich, SO.sub.x is released from the SO.sub.x absorbent (18), and NO.sub.x is released from the SO.sub.x absorbent (19 ).

摘要翻译： PCT No.PCT / JP93 / 01764 Sec。 371日期1994年7月29日第 102（e）日期1994年7月29日PCT 1993年12月3日PCT PCT。 公开号WO94 / 12778 日期：1994年6月9日，当流入的废气的空燃比为稀的时吸收NOx的NO x吸收剂（19），同时在降低流入废气中的氧浓度的同时释放吸收的NOx 内燃机的排气通道。 当流入的废气的空燃比变稀时吸收SO x的SO x吸收剂（18），同时当流入废气的空燃比为浓时释放吸收的SOx， NOx吸收剂（19）的上游侧。 当稀薄的空气燃料混合物燃烧时，SO x被吸收到SOx吸收剂（18）中，并且同时将NOx吸收到NOx吸收剂（19）中，并且当空气的空燃比 - 燃料混合物从贫转为富，SOx从SOx吸收剂（18）释放，并且NOx从SOx吸收剂（19）释放。

公开(公告)号：US6010673A

公开(公告)日：2000-01-04

申请号：US608948

申请日：1996-02-29

申请人： Takaaki Kanazawa ,  Shinichi Matsumoto ,  Satoshi Iguchi ,  Kenji Katoh ,  Toshiaki Tanaka ,  Shinichi Takeshima ,  Tsuneyuki Tanizawa ,  Koichi Kasahara ,  Syuji Tateishi ,  Hideaki Muraki

发明人： Takaaki Kanazawa ,  Shinichi Matsumoto ,  Satoshi Iguchi ,  Kenji Katoh ,  Toshiaki Tanaka ,  Shinichi Takeshima ,  Tsuneyuki Tanizawa ,  Koichi Kasahara ,  Syuji Tateishi ,  Hideaki Muraki

IPC分类号： B01D53/94 ,  B01J23/58

CPC分类号： B01D53/945 ,  B01J23/58 ,  Y02T10/22

摘要： A method for purifying an exhaust gas by simultaneously removing carbon monoxide, hydrocarbons, and nitrogen oxides contained in the exhaust gas, comprising bringing the oxygen rich exhaust gas into contact with an exhaust gas purifying catalyst comprised of at least one noble metal selected from the group consisting of platinum and palladium, at least one alkaline earth metal selected from the group consisting of barium, magnesium, calcium, and strontium, and at least one alkali metal selected from the group consisting of iron, nickel, and cobalt, supported on a carrier composed of a porous substance.

摘要翻译： 一种废气净化方法，其特征在于，通过同时除去废气中含有的一氧化碳，烃类，氮氧化物，使排气与含有至少一种贵金属的废气净化催化剂接触， 由铂和钯组成的至少一种选自钡，镁，钙和锶的碱土金属和至少一种选自铁，镍和钴的碱金属，负载在载体上 由多孔物质组成。

公开(公告)号：US5702675A

公开(公告)日：1997-12-30

申请号：US571638

申请日：1995-12-13

申请人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi

发明人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Satoshi Iguchi

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J37/02 ,  F01N3/08 ,  B01D53/92

CPC分类号： B01D53/9481 ,  B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  B01J37/0244 ,  F01N3/0842 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases, which is composed of a catalyst substrate, a first porous support layer supporting barium as a NOx-occluding material and palladium, which is formed on the catalyst support, and a second porous support layer supporting platinum, which is formed on the first porous support layer. Platinum efficiently oxidizes nitrogen monoxide to be converted into nitrogen dioxide. Palladium is supported in a highly dispersed state even after endurance to act as inlet and outlet of barium for nitrogen dioxide or the like, whereby absorption and emission of nitrogen oxides can be performed smoothly, and accordingly, the purification performance for nitrogen oxides is improved.

摘要翻译： 一种用于净化废气的催化剂，其由催化剂基质，形成在催化剂载体上的作为NOx吸留材料的钡的第一多孔载体层和钯构成，以及第二多孔载体， 形成在第一多孔支撑层上。 铂有效地氧化一氧化氮以转化为二氧化氮。 即使在耐久性之后钯也可以作为二氧化氮等的钡和钡的入口和出口而被支撑在高分散状态，从而可以顺利地进行氮氧化物的吸收和释放，从而提高氮氧化物的净化性能。

公开(公告)号：US6083467A

公开(公告)日：2000-07-04

申请号：US17027

申请日：1998-02-02

申请人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Tetsuya Yamashita ,  Satoshi Iguchi ,  Katsuhiko Wakabayashi ,  Masahiro Kishida

发明人： Shinichi Takeshima ,  Toshiaki Tanaka ,  Tetsuya Yamashita ,  Satoshi Iguchi ,  Katsuhiko Wakabayashi ,  Masahiro Kishida

IPC分类号： B01D53/94 ,  B01J23/42 ,  B01J23/46 ,  B01J33/00 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01J8/02

CPC分类号： B01D53/945 ,  B01J35/0013 ,  B01J37/0215 ,  Y02T10/22

摘要： An exhaust gas purifying catalyst in which catalytic activation particles 3 composed of a catalytic element or its compound are carried on a carrier 1. The catalytic activation particles 3, as carried on the carrier 1 and exposed to the outside of the carrier 1, are coated with the carrier 1 by 20 to 90% of their whole surface area. Also disclosed is a process for producing the exhaust gas purifying catalyst.

摘要翻译： 将由催化剂元素或其化合物构成的催化活化粒子3载持在载体1上的废气净化催化剂。载体1上载持并暴露于载体1的外部的催化活化粒子3被涂布 载体1占其整个表面积的20至90％。 还公开了一种废气净化催化剂的制造方法。