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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。
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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
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。
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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。
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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。
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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
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。
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公开(公告)号：US5450722A
公开(公告)日：1995-09-19
申请号：US196144
申请日：1994-02-14
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。
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公开(公告)号：US5735119A
公开(公告)日：1998-04-07
申请号：US620623
申请日：1996-03-22
申请人： Takamitsu Asanuma , Tetsuro Kihara , Kenji Katoh , Satoshi Iguchi
发明人： Takamitsu Asanuma , Tetsuro Kihara , Kenji Katoh , Satoshi Iguchi
IPC分类号： F02D45/00 , B01D53/94 , F01N3/08 , F01N3/18 , F01N3/20 , F01N3/24 , F01N11/00 , F02D41/02 , F02D41/04 , F02D41/14
CPC分类号： F02D41/0235 , B01D53/9495 , F01N11/007 , F02D41/0275 , F01N2550/03 , F01N2900/0422 , F01N3/0842 , F02D2200/0806 , F02D2200/0808 , Y02T10/47
摘要： An exhaust gas purification device of an engine providing a NO.sub.x absorbent arranged in the exhaust passage. An O.sub.2 sensor is arranged in the engine exhaust passage downstream of the NO.sub.x absorbent. The degree of deterioration of the NO.sub.x absorbent is detected from the output signal of the O.sub.2 sensor. The cycle for making the air-fuel ratio of the air-fuel mixture rich for causing the release of the NO.sub.x from the NO.sub.x absorbent and the rich time at that time are shortened the greater the deterioration of the NO.sub.x absorbent.
摘要翻译： 一种设置在排气通道中的设置有NOx吸收剂的发动机的排气净化装置。 O2传感器布置在NOx吸收剂下游的发动机排气通道中。 根据O2传感器的输出信号检测NOx吸收剂的劣化程度。 用于使来自NOx吸收剂的NOx释放浓缩的空气 - 燃料混合物的空燃比和当时的富时间的循环缩短了NOx吸收剂的劣化越大。
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公开(公告)号：US5577382A
公开(公告)日：1996-11-26
申请号：US493657
申请日：1995-06-22
申请人： Tetsuro Kihara , Kenji Katoh , Takamitsu Asanuma , Satoshi Iguchi
发明人： Tetsuro Kihara , Kenji Katoh , Takamitsu Asanuma , Satoshi Iguchi
IPC分类号： F02D45/00 , B01D53/94 , F01N3/08 , F01N3/18 , F01N3/20 , F01N3/24 , F01N11/00 , F02D41/02 , F02D41/14 , F01N3/28
CPC分类号： F01N3/0842 , B01D53/9495 , F01N11/007 , F02D41/0275 , F02D41/028 , F01N2240/18 , F01N2550/02 , F01N2550/03 , F01N2570/04 , Y02T10/22 , Y02T10/47
摘要： An exhaust purification device which is capable of detecting the degree of deterioration of the NOx absorbent or the three-way catalyst arranged in the exhaust passage of an engine. An O.sub.2 sensor whose output current or output voltage is proportional to the air-fuel ratio is arranged inside the exhaust passage downstream of the NOx absorbent or three-way catalyst. The air-fuel ratio of the air-fuel mixture is temporarily changed from lean to rich or from rich to lean to enable the degree of deterioration of the NOx absorbent or three-way catalyst to be detected from the peak value of the output current or voltage of the O.sub.2 sensor during the time when the air-fuel ratio is changed.
摘要翻译： 能够检测配置在发动机的排气通路内的NOx吸收剂或三元催化剂的劣化程度的排气净化装置。 其输出电流或输出电压与空燃比成比例的O2传感器布置在NOx吸收剂或三元催化剂下游的排气通道的内部。 空气 - 燃料混合物的空燃比暂时由稀浓度变为浓或从浓到稀，从而能够根据输出电流的峰值来检测NOx吸收剂或三元催化剂的劣化程度，或 空燃比变化时的O2传感器的电压。
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公开(公告)号：US5437153A
公开(公告)日：1995-08-01
申请号：US193143
申请日：1994-02-14
申请人： Shinichi Takeshima , Toshiaki Tanaka , Satoshi Iguchi , Yasushi Araki , Shinya Hirota , Tomohiro Oda , Fumitada Murakami
发明人： Shinichi Takeshima , Toshiaki Tanaka , Satoshi Iguchi , Yasushi Araki , Shinya Hirota , Tomohiro Oda , Fumitada Murakami
IPC分类号： B01D53/04 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/20 , F01N9/00 , F01N13/02 , F02B1/04 , F02D41/02 , F02D41/14
CPC分类号： B01D53/9481 , B01D53/0454 , B01D53/8696 , B01D53/9445 , B01D53/9495 , F01N13/009 , F01N3/0842 , F01N3/0871 , F01N9/00 , F01N9/005 , F02D41/027 , F02D41/0275 , F02D41/146 , F02D41/1462 , F02D41/1475 , F01N2240/18 , F01N2250/12 , F01N2390/02 , 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. It estimates the amount of NO.sub.x absorbed in the NO.sub.x absorbent (17) from the engine load and the engine rotational speed and when the amount of the estimated NO.sub.x becomes the maximum NO.sub.x absorption capacity of the NO.sub.x absorbent (17), makes the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorbent (17) rich.
摘要翻译： PCT No.PCT / JP93 / 00778 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 / 25806 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。 它估计从发动机负荷和发动机转速来吸收NOx吸收剂（17）中的NOx的量，并且当估计的NOx的量成为NOx吸收剂（17）的最大NOx吸收能力时，使空气燃料 流入NOx吸收剂（17）的废气的比例变多。
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公开(公告)号：US5472673A
公开(公告)日：1995-12-05
申请号：US340438
申请日：1994-11-14
申请人： Masato Goto , Satoshi Iguchi , Kenji Katoh , Tetsuro Kihara
发明人： Masato Goto , Satoshi Iguchi , Kenji Katoh , Tetsuro Kihara
IPC分类号： B01D53/04 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/24 , F01N13/02 , F02D41/02 , B01D53/34
CPC分类号： F01N3/085 , B01D53/0454 , B01D53/8637 , B01D53/9422 , B01D53/9495 , F01N13/009 , F01N3/0807 , F01N3/0842 , F01N3/0871 , F02D41/0275 , F02D41/0285 , B01D2255/1021 , B01D2255/2042 , B01D2255/2045 , B01D2255/2061 , B01D2255/2063 , F01N2240/18 , F01N2570/04 , F01N2570/14
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. A sulphur trapping device for trapping SO.sub.x contained in the exhaust gas is arranged in the exhaust passage upstream of the NO.sub.x absorbent.
摘要翻译： 一种发动机，其特征在于，具有排气通路，其内部具有NOx吸收剂，当流入所述NOx吸收剂的废气的空燃比为稀时吸收NOx，并且当排出的废气的空燃比流入 NOx吸收剂成为化学计量空燃比或浓度。 用于捕集废气中所含的SOx的捕集捕集装置设置在NOx吸收剂上游的排气通道中。
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