公开(公告)号：US20090320451A1

公开(公告)日：2009-12-31

申请号：US12308947

申请日：2008-04-30

申请人： Hiroshi Otsuki ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi

发明人： Hiroshi Otsuki ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi

IPC分类号： F01N11/00 ,  F01N3/10 ,  F01N9/00

CPC分类号： F01N9/00 ,  B01D53/9495 ,  B01D2257/302 ,  F01N3/0814 ,  F01N3/0885 ,  F01N9/005 ,  F01N2560/027 ,  F01N2560/06 ,  F01N2900/0408 ,  F01N2900/14 ,  F01N2900/1612 ,  Y02T10/47

摘要： In an internal combustion engine, an SOx sensor (16) having a sensor part (53, 60) trapping the SOx contained in the exhaust gas and able to detect the amount of SOx trapped at the sensor part (53, 60) from a change of property of the sensor part (53, 60) is arranged in the engine exhaust passage upstream of the NOx storing catalyst (14). When estimating the amount of SOx stored in the NOx storing catalyst (14) from the amount of SOx trapped at the sensor part (53, 60), deviation of the estimated value of the amount of stored SOx arising due to the difference between the SOx trapping rate of the sensor part (53, 60) and the SOx trapping rate of the NOx storing catalyst (14) is corrected.

摘要翻译： 在内燃机中，具有传感器部分（53,60）的SOx传感器（16）捕获排放气体中所含的SOx并且能够从变化中检测在传感器部分（53,60）处捕获的SO x的量 传感器部分（53,60）的特性布置在NOx吸留催化剂（14）上游的发动机排气通道中。 当从传感器部分（53,60）中捕获的SOx的量估计存储在NOx存储催化剂（14）中的SO x的量时，由于SOx之间的差异而产生的存储的SOx的量的估计值的偏差 校正传感器部分（53,60）的捕获率和NOx吸留催化剂（14）的SOx捕获速率。

公开(公告)号：US20090308053A1

公开(公告)日：2009-12-17

申请号：US12308768

申请日：2008-01-29

申请人： Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiroshi Otsuki

发明人： Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiroshi Otsuki

IPC分类号： F01N11/00 ,  F01N9/00 ,  F01N3/00 ,  F01N3/10

CPC分类号： F02D41/0285 ,  B01D53/9477 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2257/302 ,  B01D2257/404 ,  F01N3/0807 ,  F01N3/0842 ,  F01N3/085 ,  F01N13/009 ,  F01N2550/03 ,  F01N2560/023 ,  F01N2560/027 ,  F01N2570/04 ,  F01N2610/03 ,  F02D2200/0818

摘要： An SOx trap catalyst able to trap SOx contained in the exhaust gas is arranged in an engine exhaust passage upstream of an NOx storing catalyst in an internal combustion engine. When the SOx trap rate of the SOx trap catalyst falls, fuel is added in the exhaust gas flowing into the SOx trap catalyst to form in the SOx trap catalyst a region in which an air-fuel ratio becomes locally rich. SOx released from the SOx trap catalyst in this region can be trapped in the SOx trap catalyst at the downstream side once again without flowing out from the downstream end of the SOx trap catalyst.

摘要翻译： 在内燃机中的NOx吸留催化剂的上游的发动机排气通路中配置能够捕集废气中含有的SO x的SO X捕集催化剂。 当SOx捕集催化剂的SOx捕获率下降时，在排入SO x捕集催化剂的废气中添加燃料，在SO x捕集催化剂中形成空燃比局部浓缩的区域。 从该区域的SOx捕集催化剂释放的SOx可以再次被捕获在下游侧的SO x捕集催化剂中，而不会从SOx捕集催化剂的下游端流出。

公开(公告)号：US20090255233A1

公开(公告)日：2009-10-15

申请号：US11989867

申请日：2007-06-22

申请人： Kohei Yoshida ,  Kotaro Hayashi ,  Shinya Hirota ,  Takamitsu Asanuma ,  Hiromasa Nishioka ,  Hiroshi Otsuki

发明人： Kohei Yoshida ,  Kotaro Hayashi ,  Shinya Hirota ,  Takamitsu Asanuma ,  Hiromasa Nishioka ,  Hiroshi Otsuki

IPC分类号： F01N9/00 ,  F01N3/10 ,  F01N3/023 ,  F01N3/035

CPC分类号： F01N3/0871 ,  B01D53/9431 ,  B01J23/02 ,  B01J23/58 ,  B01J23/63 ,  B01J27/25 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/085 ,  F01N9/002 ,  F01N13/009 ,  F01N2370/02 ,  F01N2510/06 ,  F01N2560/027 ,  F01N2560/06 ,  F01N2900/0408 ,  F01N2900/1612 ,  F01N2900/1621 ,  Y02T10/47

摘要： An SOX trap catalyst (11) in which at least one of an alkali metal and alkali earth metal is carried diffused is arranged in an exhaust passage of an internal combustion engine. By holding the temperature of the SOX trap catalyst (11) during engine operation at the temperature where a nitrate of the at least one of the alkali metal and alkali earth metal becomes the melted state, a nitrate movement and coagulation action where the nitrate in the SOX trap catalyst (11) moves to and coagulates at the surface of the SOX trap catalyst (11) is promoted. Due to this nitrate movement and coagulation action, SOX is removed while restoring the SOX trap rate.

摘要翻译： 在内燃机的排气通道中设置有其中载持有碱金属和碱土金属中的至少一种的SOX捕集催化剂（11）。 通过在碱性金属和碱土金属中的至少一种的硝酸盐变为熔融状态的温度下，在发动机运转期间保持SO x捕集催化剂（11）的温度，硝酸盐运动和凝结作用，其中硝酸盐在 促进了SOX捕集催化剂（11）在SOX捕集催化剂（11）表面移动并凝结的SOX捕集催化剂（11）。 由于这种硝酸盐运动和凝结作用，SOX在恢复SOX捕集率的同时被去除。

公开(公告)号：US20090249768A1

公开(公告)日：2009-10-08

申请号：US12227718

申请日：2007-06-29

申请人： Takamitsu Asanuma ,  Shinya Hirota ,  Kotaro Hayashi ,  Kohei Yoshida ,  Atsushi Hayashi

发明人： Takamitsu Asanuma ,  Shinya Hirota ,  Kotaro Hayashi ,  Kohei Yoshida ,  Atsushi Hayashi

IPC分类号： F01N9/00 ,  F01N3/10

CPC分类号： B01D53/9409 ,  B01D53/90 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2257/302 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/106 ,  F01N9/002 ,  F01N13/009 ,  F01N2610/03 ,  F01N2900/1612 ,  F02B37/00 ,  F02D41/0285 ,  F02D41/405 ,  Y02A50/2348 ,  Y02T10/44 ,  Y02T10/47

摘要： HC feed control for feeding HC into exhaust gas upstream of an SOx trap 11 when a predetermined condition stands is executed. When an SOx trap amount is smaller than a predetermined amount, as HC feed control, first HC feed control feeding HC into the exhaust gas upstream of the SOx trap by a predetermined pattern is executed. When the SOx trap amount is larger than a predetermined amount, as HC feed control, second HC feed control feeding HC into the exhaust gas upstream of the SOx trap by a pattern different from the predetermined pattern, which pattern keeping the temperature of the SOx trap from locally becoming higher than the predetermined temperature or suppressing the formation of a region in the exhaust gas flowing into the SOx trap where the air-fuel ratio becomes locally rich, is executed.

摘要翻译： 当执行预定条件时，HC进给控制用于将HC进入到SOx捕集器11上游的废气中。 当SOx捕集量小于预定量时，执行作为HC进料控制的第一HC进料控制以预定模式将HC进料到SOx捕集器上游的废气中。 当SOx捕集量大于预定量时，作为HC进料控制，第二HC进料控制通过不同于预定图案的图案将HC进入SOx捕集器上游的废气中，该图案保持SOx捕集器的温度 从局部变得高于预定温度或抑制流入空燃比变得局部浓缩的SOx捕集器的排气中的区域的形成。

公开(公告)号：US20090183493A1

公开(公告)日：2009-07-23

申请号：US12227852

申请日：2007-06-20

申请人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma

发明人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma

IPC分类号： F01N9/00 ,  F01N3/10 ,  F01N3/00

CPC分类号： F01N3/0821 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2258/012 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/206 ,  F01N9/002 ,  F01N13/009 ,  F01N2560/06 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2610/146 ,  F01N2900/0408 ,  Y02A50/2344 ,  Y02T10/47

摘要： When performing temperature elevation control at a first exhaust purification device 1, a second exhaust purification device 2 is prevented from being raised in temperature to a set temperature or more.

摘要翻译： 当在第一排气净化装置1进行升温控制时，防止第二排气净化装置2升温到设定温度以上。

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：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：US09017614B2

公开(公告)日：2015-04-28

申请号：US13259574

申请日：2010-12-06

申请人： Yoshihisa Tsukamoto ,  Hiromasa Nishioka ,  Kohei Yoshida ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

发明人： Yoshihisa Tsukamoto ,  Hiromasa Nishioka ,  Kohei Yoshida ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

IPC分类号： B01D53/00 ,  B01D53/56 ,  F01N3/00 ,  B01D53/94 ,  F01N3/021 ,  F01N3/08 ,  F01N9/00 ,  F01N13/00

CPC分类号： B01D53/9431 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N13/009 ,  F01N2240/30 ,  F01N2510/0684 ,  F01N2610/03 ,  F01N2900/0601 ,  F01N2900/1602 ,  F01N2900/1626 ,  Y02T10/24 ,  Y02T10/47

摘要： In an internal combustion engine, inside of an engine exhaust passage, an NOx adsorption part and an NOx purification part are arranged. The NOx purification part has the property of reducing NOx which is contained in exhaust gas if the concentration of hydrocarbons is made to vibrate by within a predetermined range of amplitude and within a predetermined range of period. When NOx is to be desorbed from the NOx adsorption part, the current NOx which is contained in the exhaust gas and the NOx which is desorbed from the NOx adsorption part are reduced by making the concentration of hydrocarbons of the NOx purification part vibrate by the amplitude and period which are set for the current engine operating state, at least of which (ΔT·k) has been corrected so that the amount of hydrocarbons becomes greater.

摘要翻译： 在内燃机中，配置发动机排气通路内部的NOx吸附部和NOx净化部。 如果使碳氢化合物的浓度在预定的振幅范围内并在预定的周期范围内振动，则NOx净化部具有还原废气中所含的NOx的性质。 当NOx从NOx吸附部分脱附时，通过使NOx净化部的烃浓度振动振幅来减少废气中所含的电流NOx和从NOx吸附部脱离的NOx 和对于当前发动机运转状态设定的时间段，其中至少（＆Dgr; T·k）已被校正，使得烃的量变大。

公开(公告)号：US20110203260A1

公开(公告)日：2011-08-25

申请号：US13124767

申请日：2009-11-02

申请人： Kazuhiro Umemoto ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Yuka Nakata ,  Takamitsu Asanuma

发明人： Kazuhiro Umemoto ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Yuka Nakata ,  Takamitsu Asanuma

IPC分类号： F01N3/035 ,  F01N3/10 ,  F02M25/06

CPC分类号： F02D41/0275 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/103 ,  F01N13/009 ,  F01N2570/145 ,  F02B37/00 ,  F02D41/0055 ,  F02D41/402 ,  F02D2041/0015 ,  F02D2200/0802 ,  F02D2250/36 ,  Y02A50/2344 ,  Y02C20/10

摘要： An exhaust purification system of an internal combustion engine arranging in an engine exhaust passage an NOx storing reducing catalyst storing NOx contained in exhaust gas when an air-fuel ratio of inflowing exhaust gas is lean and reducing and purifying stored NOx when the air-fuel ratio of the inflowing exhaust gas becomes a stoichiometric air-fuel ratio or rich, which system is provided with an NOx production reducing means for reducing an amount of production of NOx produced in a combustion chamber due to change of a combustion state of the engine and temporarily reduces the amount of production of NOx by the NOx production reducing means when an amount of N2O flowing out from the NOx storing reducing catalyst is anticipated to exceed an allowable amount.

摘要翻译： 一种内燃机的排气净化系统，其在发动机排气通路中配置NOx吸留还原催化剂，所述NOx吸留还原催化剂在所述排出气体的空燃比为稀的情况下存储废气中所含的NOx，并且当所述空燃比 流入的废气成为化学计量空燃比或浓度，该系统设置有NOx生成减少装置，用于减少由于发动机的燃烧状态的变化和暂时地在燃烧室中产生的NOx的产生量 当从NOx存储还原催化剂流出的N2O的量被预计超过允许量时，通过NOx生成减少装置来减少NOx的产生量。