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公开(公告)号：US20110203260A1
公开(公告)日：2011-08-25
申请号：US13124767
申请日：2009-11-02
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。
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公开(公告)号：US11660589B2
公开(公告)日：2023-05-30
申请号：US16864340
申请日：2020-05-01
申请人： Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Masatoshi Ikebe , Ryota Nakashima , Yasutaka Nomura , Hirotaka Ori
发明人： Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Masatoshi Ikebe , Ryota Nakashima , Yasutaka Nomura , Hirotaka Ori
CPC分类号： B01J35/04 , B01D46/2418 , B01D53/94 , B01J23/42 , B01J23/44 , B01J23/464 , F01N3/0821 , F01N3/281 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/9155
摘要： An exhaust gas purification device that allows suppressing an increase in pressure loss is provided. The exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. The substrate includes a porous partition wall which defines inflow cells and outflow cells extending from an inflow side end to an outflow side end. The inflow cell side catalyst layer is disposed on a surface on the inflow cell side in an inflow cell side catalyst region from an inflow side end to a position close to an outflow side end of the partition wall. The permeability of a portion including an outflow side region from the position to the outflow side end of the partition wall is higher than a gas permeability of a portion including the inflow cell side catalyst region of the partition wall and the inflow cell side catalyst layer.
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公开(公告)号：US09689296B2
公开(公告)日：2017-06-27
申请号：US14441987
申请日：2012-11-13
申请人： Hiromasa Nishioka , Kazuhiro Itoh , Daichi Imai , Ryota Koutake
发明人： Hiromasa Nishioka , Kazuhiro Itoh , Daichi Imai , Ryota Koutake
CPC分类号： F01N9/002 , F01N3/022 , F01N3/0222 , F01N3/023 , F01N3/035 , F01N9/005 , F01N2330/60 , F01N2510/0682 , F01N2900/0408 , F01N2900/1606 , Y02T10/47
摘要： A particulate filter arranged in an engine exhaust passage is provided with alternately arranged exhaust gas inflow and outflow passages and porous partition walls separating these passages from each other. In each partition wall, a coated zone where a coated layer with an average pore size smaller than that of a partition wall substrate is used to cover the substrate surface and a non-coated zone downstream of the coated zone where the substrate surface is not covered by the coated layer are defined, and the ash in the exhaust gas can pass through the partition wall in the non-coated zone. The quantity of particulate matter trapped at the non-coated zones is calculated, and PM removal control for removing particulate matter from the particulate filter is performed when it is judged that the quantity of trapped particulate matter is greater than an allowable upper limit amount.
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公开(公告)号：US08434297B2
公开(公告)日：2013-05-07
申请号：US12673888
申请日：2009-06-15
CPC分类号： F01N3/0871 , B01D53/9409 , B01D2251/208 , B01D2255/91 , B01D2257/402 , B01D2257/404 , B01D2258/012 , F01N3/0828 , F01N3/36 , F01N2570/145 , F01N2610/03 , Y02A50/2344 , Y02C20/10 , Y02T10/20
摘要： An electronic control unit executing an algorithm so as to operate an exhaust purification system of an engine. The algorithm (1) commences a regeneration treatment by causing an amount of fuel supplied to a combustion process of the engine to increase so as to change an air-fuel ratio of exhaust gas of the engine from a first lean air-fuel ratio to a set rich air-fuel ratio and (2) causes uncombusted fuel to be supplied to a NOx catalyst device during at least one of: a first period in which an air-fuel ratio of the exhaust gas within the NOx catalyst device changes from the first lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started; and a second period after an air-fuel ratio of the exhaust gas within the NOx catalyst device becomes a ratio indicating completion of the regeneration treatment.
摘要翻译： 一种执行算法以操作发动机的排气净化系统的电子控制单元。 算法（1）通过使供给到发动机的燃烧过程的燃料量增加而开始再生处理，以将发动机的排气的空燃比从第一稀空燃比改变为 设定浓空燃比，（2）在NOx催化剂装置中的排气的空燃比从第一时间变化的第一期间中的至少一个期间使未燃燃料供给到NOx催化剂装置 当再生处理开始时，稀空燃比与设定的浓空燃比; 并且在NOx催化剂装置内的排气的空燃比成为表示再生处理完成的比例的第二期间。
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公开(公告)号：US08061125B2
公开(公告)日：2011-11-22
申请号：US12310066
申请日：2007-08-29
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。
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公开(公告)号：US20110036073A1
公开(公告)日：2011-02-17
申请号：US12937036
申请日：2009-04-07
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。
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公开(公告)号：US20110023465A1
公开(公告)日：2011-02-03
申请号：US12674043
申请日：2009-05-19
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。
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公开(公告)号：US20090199548A1
公开(公告)日：2009-08-13
申请号：US12310066
申请日：2007-08-29
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。
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公开(公告)号：US20150292387A1
公开(公告)日：2015-10-15
申请号：US14441987
申请日：2012-11-13
申请人： Hiromasa NISHIOKA , Kazuhiro ITOH
发明人： Hiromasa Nishioka , Kazuhiro Itoh , Daichi Imai , Ryota Koutake
CPC分类号： F01N9/002 , F01N3/022 , F01N3/0222 , F01N3/023 , F01N3/035 , F01N9/005 , F01N2330/60 , F01N2510/0682 , F01N2900/0408 , F01N2900/1606 , Y02T10/47
摘要： A particulate filter arranged in an engine exhaust passage is provided with alternately arranged exhaust gas inflow and outflow passages and porous partition walls separating these passages from each other. In each partition wall, a coated zone where a coated layer with an average pore size smaller than that of a partition wall substrate is used to cover the substrate surface and a non-coated zone downstream of the coated zone where the substrate surface is not covered by the coated layer are defined, and the ash in the exhaust gas can pass through the partition wall in the non-coated zone. The quantity of particulate matter trapped at the non-coated zones is calculated, and PM removal control for removing particulate matter from the particulate filter is performed when it is judged that the quantity of trapped particulate matter is greater than an allowable upper limit amount.
摘要翻译： 布置在发动机排气通道中的颗粒过滤器设置有交替布置的废气流入和流出通道和将这些通道彼此分开的多孔分隔壁。 在每个分隔壁中，使用平均孔径小于分隔壁基底的涂层的涂覆区域覆盖基底表面和未涂覆基底表面的涂覆区域下游的未涂覆区域 限定涂层，并且排气中的灰分可以穿过未涂覆区域中的分隔壁。 计算在未涂覆区域捕获的颗粒物质的量，并且当判定被捕获的颗粒物质的量大于容许上限量时，执行用于从颗粒过滤器除去颗粒物质的PM去除控制。
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公开(公告)号：US08640442B2
公开(公告)日：2014-02-04
申请号：US12937036
申请日：2009-04-07
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。
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