公开(公告)号：US08209954B2

公开(公告)日：2012-07-03

申请号：US12450231

申请日：2008-08-26

申请人： Kohei Yoshida ,  Takamitsu Asanuma ,  Hiromasa Nishioka ,  Hiroshi Otsuki

发明人： Kohei Yoshida ,  Takamitsu Asanuma ,  Hiromasa Nishioka ,  Hiroshi Otsuki

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D2251/2062 ,  B01D2255/1021 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/91 ,  B01D2255/911 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0842 ,  F01N3/2073 ,  F01N3/208 ,  F01N13/009 ,  F01N2240/18 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2430/06 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1614 ,  F01N2900/1622 ,  F02D41/0275 ,  F02D2041/1469 ,  F02D2250/36 ,  Y02A50/2344 ,  Y02T10/24

摘要： An internal combustion engine wherein an NOx storing catalyst is arranged in an engine exhaust passage and an NOx selective reducing catalyst is arranged downstream of the NOx storing catalyst. Just before the air-fuel ratio of the exhaust gas flowing into the NOx storing catalyst is temporarily switched from lean to rich to release NOx from the NOx storing catalyst, an amount of NOx necessary for removing ammonia adsorbed on the NOx selective reducing catalyst is fed to the NOx selective reducing catalyst under a lean air-fuel ratio.

摘要翻译： 一种内燃机，其特征在于，在所述NOx吸留催化剂的下游设置有NOx吸留催化剂，所述NOx吸留催化剂配置在发动机排气通路中，所述NOx选择还原催化剂配置在所述NOx吸留催化剂的下游。 在流入NOx吸留催化剂的废气的空燃比暂时从稀释至浓缩以从NOx吸留催化剂释放NOx之前，进行吸附在NOx选择还原催化剂上的除去氨所需的NOx量 在稀空燃比下与NOx选择还原催化剂接触。

公开(公告)号：US08061125B2

公开(公告)日：2011-11-22

申请号：US12310066

申请日：2007-08-29

申请人： Kohei Yoshida ,  Hiromasa Nishioka ,  Takamitsu Asanuma

发明人： Kohei Yoshida ,  Hiromasa Nishioka ,  Takamitsu Asanuma

IPC分类号： F01N3/00

CPC分类号： F01N3/0885 ,  F01N9/00 ,  F01N11/005 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/028 ,  F02D41/1446 ,  Y02T10/20

摘要： Engine air-fuel ratio controlling means is provided to control an exhaust air-fuel ratio that is the ratio between the air contained in the exhaust gas discharged from the engine and the fuel element contained in the same exhaust gas and acting as a reducing agent at a NOx catalyst by controlling the air-fuel ratio of the gas combusted in the engine. Fuel adding means is provided upstream of the NOx catalyst in an exhaust passage to add fuel into the exhaust gas. During the SOx poisoning recovery control, when developing a state enabling SOx reduction reactions, the exhaust gas air-fuel ratio of the exhaust gas discharged from the engine and the amount of fuel added from the fuel adding means are controlled to minimize the sum of the amount of fuel injected in the engine and the amount of fuel added from the fuel adding means.

摘要翻译： 发动机空燃比控制装置用于控制排气空燃比，该排气空燃比是包含在从发动机排出的废气中的空气与包含在同一废气中并用作还原剂的燃料元件之间的比例 通过控制在发动机中燃烧的气体的空燃比来控制NOx催化剂。 燃料添加装置设置在排气通道中的NOx催化剂的上游，以将燃料添加到废气中。 在SOx中毒恢复控制期间，当开发能够进行SOx还原反应的状态时，控制从发动机排出的废气的排气空燃比和从燃料添加装置添加的燃料量，以使 在发动机中喷射的燃料量和从燃料添加装置添加的燃料量。

公开(公告)号：US20110036073A1

公开(公告)日：2011-02-17

申请号：US12937036

申请日：2009-04-07

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

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

IPC分类号： F01N3/24 ,  F02D41/04

CPC分类号： F02D41/0285 ,  B01D53/9495 ,  B01D2255/91 ,  B01D2257/302 ,  B01D2257/404 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N9/00 ,  F01N13/02 ,  F01N2430/06 ,  F01N2430/085 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2900/1612 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/405 ,  Y02A50/2344 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/47

摘要： In an internal combustion engine, an SOX trap catalyst (13) which traps SOX contained in the exhaust gas is arranged upstream of an NOX storing catalyst (15) in an engine exhaust passage. When the NOX storing catalyst (15) should release NOX, auxiliary fuel is injected into a combustion chamber (2) at a combustible timing after the completion of injection of fuel into the combustion chamber (2) for generating the engine output. At this time, the auxiliary fuel is injected so that the air-fuel ratio A/F of the combustion gas in the combustion chamber (2) does not become below a minimum allowable air-fuel ratio M where SOX trapped at the SOX trap catalyst (13) will not be released.

摘要翻译： 在内燃机中，在发动机排气通路内配置有NO x吸留催化剂（15）的上游的排出气体中含有SO x的SO X捕集催化剂（13）。 当NO x储存催化剂（15）应释放NOX时，在完成向燃烧室（2）注入燃料以产生发动机输出之后的可燃时刻将辅助燃料喷射到燃烧室（2）中。 此时，辅助燃料被喷射，使得燃烧室（2）中的燃烧气体的空燃比A / F不会低于最低允许空燃比M，其中SO X捕获在SO x捕集催化剂 （13）不会被释放。

公开(公告)号：US20110023465A1

公开(公告)日：2011-02-03

申请号：US12674043

申请日：2009-05-19

申请人： Takamitsu Asanuma ,  Hiromasa Nishioka ,  Daichi Imai ,  Kazuhiro Umemoto

发明人： Takamitsu Asanuma ,  Hiromasa Nishioka ,  Daichi Imai ,  Kazuhiro Umemoto

IPC分类号： F01N9/00 ,  F01N3/10

CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9481 ,  B01D2255/104 ,  B01D2258/012 ,  B01D2258/014 ,  F01N3/023 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/2066 ,  F01N3/208 ,  F01N13/009 ,  F01N2370/02 ,  F01N2510/06 ,  F01N2550/03 ,  F01N2610/02 ,  F01N2900/14 ,  F01N2900/1621 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/029 ,  Y02T10/24 ,  Y02T10/26

摘要： An exhaust purification system of an internal combustion engine comprising an NOX holding material arranged in an engine exhaust passage, having a catalyst metal containing silver, holding NOX contained in the exhaust gas in the form of silver nitrate by the catalyst metal when an air-fuel ratio of inflowing exhaust gas is lean, and releasing the held NOX if the air-fuel ratio of the inflowing exhaust gas becomes a stoichiometric air-fuel ratio or rich. The NOX holding material has a scatter temperature at which catalyst metal scatters in the form of silver nitrate if the temperature rises. When it is time to perform control raising the temperature of the NO holding material to the scatter temperature or above, the NOX held in the NOX holding material is released by making the air-fuel ratio of the exhaust gas flowing into the NO holding material the stoichiometric air-fuel ratio or rich.

摘要翻译： 一种内燃机的排气净化系统，其包括设置在发动机排气通路中的NO x保持材料，具有含有银的催化剂金属，当空气燃料时，通过催化剂金属将含有硝酸银形式的废气中包含的NO x 流入废气的比例是稀的，如果流入的废气的空燃比变成理论空燃比，则释放保持的NOX。 如果温度升高，NO x保持材料具有散射温度，催化剂金属以硝酸银的形式散射。 当控制将NO保持材料的温度提高到散射温度以上时，通过使排气的空燃比流入NO保持材料而释放保持在NO X保持材料中的NOX 理论空燃比或浓度。

公开(公告)号：US20090199548A1

公开(公告)日：2009-08-13

申请号：US12310066

申请日：2007-08-29

申请人： Kohei Yoshida ,  Hiromasa Nishioka ,  Takamitsu Asanuma

发明人： Kohei Yoshida ,  Hiromasa Nishioka ,  Takamitsu Asanuma

IPC分类号： F01N3/10 ,  F01N9/00

CPC分类号： F01N3/0885 ,  F01N9/00 ,  F01N11/005 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/028 ,  F02D41/1446 ,  Y02T10/20

摘要： Engine air-fuel ratio controlling means is provided to control an exhaust air-fuel ratio that is the ratio between the air contained in the exhaust gas discharged from the engine and the fuel element contained in the same exhaust gas and acting as a reducing agent at a NOx catalyst by controlling the air-fuel ratio of the gas combusted in the engine. Fuel adding means is provided upstream of the NOx catalyst in an exhaust passage to add fuel into the exhaust gas. During the SOx poisoning recovery control, when developing a state enabling SOx reduction reactions, the exhaust gas air-fuel ratio of the exhaust gas discharged from the engine and the amount of fuel added from the fuel adding means are controlled to minimize the sum of the amount of fuel injected in the engine and the amount of fuel added from the fuel adding means.

摘要翻译： 发动机空燃比控制装置用于控制排气空燃比，该排气空燃比是包含在从发动机排出的废气中的空气与包含在同一废气中并用作还原剂的燃料元件之间的比例 通过控制在发动机中燃烧的气体的空燃比来控制NOx催化剂。 燃料添加装置设置在排气通道中的NOx催化剂的上游，以将燃料添加到废气中。 在SOx中毒恢复控制期间，当开发能够进行SOx还原反应的状态时，控制从发动机排出的废气的排气空燃比和从燃料添加装置添加的燃料量，以使 在发动机中喷射的燃料量和从燃料添加装置添加的燃料量。

公开(公告)号：US07509801B2

公开(公告)日：2009-03-31

申请号：US10560733

申请日：2005-06-06

申请人： Takamitsu Asanuma

发明人： Takamitsu Asanuma

IPC分类号： F01N3/00

CPC分类号： F01N3/0885 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/027 ,  F01N2570/04 ,  Y02T10/47

摘要： There are provided a NOx storage reduction catalyst which is provided in an exhaust passage for an engine, and a sulfur concentration sensor which can detect a total concentration of SOx and H2S in exhaust gas that has passed through the NOx catalyst, and a concentration of SOx in the exhaust gas. An operating state of the engine is controlled such that SOx is released from the NOx catalyst (sulfur poisoning recovery process). When a concentration of the hydrogen sulfide obtained based on the total concentration and the concentration of SOx that are detected by the sulfur concentration sensor during the sulfur poisoning recovery process exceeds a permissible limit, an operating state of the engine is controlled such that the sulfur oxide is released from the NOx catalyst, an amount of the released sulfur oxide is in a predetermined range, and the concentration of the hydrogen sulfide is reduced.

摘要翻译： 提供了一种设置在用于发动机的排气通道中的NOx储存还原催化剂，以及能够检测通过NOx催化剂的废气中的SO x和H 2 S的总浓度的硫浓度传感器，以及SO x的浓度 在废气中。 控制发动机的运转状态使得SO x从NOx催化剂中释放出来（硫中毒恢复过程）。 当在硫中毒恢复过程中基于硫浓度传感器检测到的总浓度和SO x浓度获得的硫化氢浓度超过许可极限时，控制发动机的运行状态，使得硫氧化物 从NOx催化剂释放，释放的硫氧化物的量处于预定范围内，并且硫化氢的浓度降低。

公开(公告)号：US20060230749A1

公开(公告)日：2006-10-19

申请号：US10562900

申请日：2005-06-09

申请人： Takamitsu Asanuma

发明人： Takamitsu Asanuma

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/0885 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F01N2570/04 ,  F01N2900/0422 ,  Y02T10/47

摘要： There are provided a NOx storage reduction catalyst which is provided in an exhaust passage for an internal combustion engine, and concentration detection means whose detection state can be changed between a first detection state in which a total concentration of sulfur oxide and hydrogen sulfide in exhaust gas that has passed through the NOx catalyst is detected, and a second detection state in which a concentration of the sulfur oxide in the exhaust gas is detected. An operating state of the internal combustion engine is controlled such that the sulfur oxide is released from the NOx catalyst (sulfur poisoning recovery process). The detection state of the concentration detection means is alternately changed between the first detection state and the second detection state after the concentration detection means which is caused to remain in the second detection state detects release of the sulfur oxide from the NOx catalyst during the sulfur poisoning recovery process, whereby the concentration of the sulfur oxide and a concentration of the hydrogen sulfide are obtained.

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：US09181842B2

公开(公告)日：2015-11-10

申请号：US13144258

申请日：2010-01-08

申请人： Kazuhiro Umemoto ,  Hiromasa Nishioka ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Takamitsu Asanuma ,  Takao Fukuma ,  Kouhei Yoshida ,  Daichi Imai ,  Yuka Nakata

发明人： Kazuhiro Umemoto ,  Hiromasa Nishioka ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Takamitsu Asanuma ,  Takao Fukuma ,  Kouhei Yoshida ,  Daichi Imai ,  Yuka Nakata

IPC分类号： F01N3/00 ,  F01N11/00 ,  F01N3/08 ,  F02D41/14

CPC分类号： F01N11/002 ,  F01N3/085 ,  F01N3/0885 ,  F01N2510/00 ,  F01N2550/02 ,  F01N2560/027 ,  F01N2560/06 ,  F01N2560/20 ,  F01N2570/04 ,  F02D41/1446 ,  G01K2205/04 ,  Y02T10/20 ,  Y02T10/47

摘要： A temperature sensor includes temperature detecting means and at least one of a catalyst and an adsorbent applied to the surface of the temperature detecting means. At least one of the catalyst and the adsorbent catalyzes an exothermic reaction of a reactant in gas on the temperature detecting means. A temperature that is increased by the exothermic reaction is detected by the temperature detecting means. The catalytic efficiency for the exothermic reaction of at least one of the catalyst and the adsorbent is reduced by sulfur poisoning. The temperature sensor is disposed upstream of an exhaust purification system. Accordingly, it is determined that the temperature sensor is subjected to sulfur poisoning if the temperature detected by the temperature sensor is below a prescribed temperature.

摘要翻译： 温度传感器包括温度检测装置和施加到温度检测装置的表面的催化剂和吸附剂中的至少一种。 催化剂和吸附剂中的至少一种催化气体中的反应物在温度检测装置上的放热反应。 通过温度检测装置检测由放热反应增加的温度。 催化剂和吸附剂中的至少一种的放热反应的催化效率由于硫中毒而降低。 温度传感器设置在排气净化系统的上游。 因此，如果温度传感器检测到的温度低于规定温度，则判断为温度传感器受到硫中毒。

公开(公告)号：US08745972B2

公开(公告)日：2014-06-10

申请号：US13318992

申请日：2009-05-07

申请人： Kohei Yoshida ,  Takamitsu Asanuma ,  Masahide Iida ,  Yuichi Sobue

发明人： Kohei Yoshida ,  Takamitsu Asanuma ,  Masahide Iida ,  Yuichi Sobue

IPC分类号： F01N3/00

CPC分类号： F02D41/028 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/106 ,  F02D2200/0818

摘要： An exhaust purification system of an internal combustion engine includes an NOX storage reduction catalyst device which is arranged in an engine exhaust passage. The NOX storage reduction catalyst device stores SOX simultaneously with NOX. When the stored SOX amount exceeds a predetermined allowable amount, the SOX is made to be released by SOX release control which raises the temperature of the NOX catalyst device to the SOX releasable temperature, then makes the air-fuel ratio of the exhaust gas which flows into the NOX catalyst device the stoichiometric air-fuel ratio or rich. The NOX catalyst device has a residual SOX storage amount which finally remains even if performing SOX release control depending on the temperature of the NOX catalyst device when performing SOX release control. The system uses the residual SOX storage amount of the current SOX release control as the basis to calculate the SOX release speed at each timing in the current SOX release control.

摘要翻译： 内燃机的排气净化系统包括设置在发动机排气通路内的NO x储存还原催化剂装置。 NOX储存还原催化剂装置与NOX同时存储SOX。 当储存的SOX量超过预定的允许量时，通过SOX释放控制使SOX释放，NOX释放控制使NOX催化剂装置的温度升高到SOX可释放温度，然后使流动的废气的空燃比 进入NOX催化装置的化学计量空燃比或浓度。 即使在进行SOX释放控制时，根据NO x催化剂装置的温度进行SOX释放控制，NO X催化剂装置仍具有残留的SO x储存量。 该系统使用当前SOX释放控制的剩余SOX存储量作为在当前SOX释放控制中的每个定时计算SOX释放速度的基础。