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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：US09394816B2
公开(公告)日：2016-07-19
申请号：US14388315
申请日：2012-03-30
CPC分类号： F01N3/035 , B01D46/2429 , B01D2046/2437 , F01N3/022 , F01N3/0222 , F01N3/0232 , F01N3/103 , F01N2330/06 , F01N2330/60 , F01N2510/0682
摘要： An object of the invention is to suppress deposition of ash in a wall-flow particulate filter while curtailing drops in a trapping rate of PM. To attain the above object, the invention provides a wall-flow particulate filter delimited by porous partition walls having pores of a size that allows ash and ash aggregates to pass therethrough. In the filter, a coat layer having pores smaller than the pores of the partition walls is provided, at a region of the partition walls, from an upstream end thereof up to a position before a downstream end thereof.
摘要翻译： 本发明的一个目的是抑制灰尘沉积在壁流微粒过滤器中，同时降低PM的捕获速率。 为了实现上述目的，本发明提供一种由多孔分隔壁界定的壁流微粒过滤器，其具有允许灰分和灰分聚集体通过的尺寸的孔。 在过滤器中，在分隔壁的一个区域，从其上游端到其下游端之前的位置设置有比分隔壁的孔小的孔的涂层。
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公开(公告)号：US20150167518A1
公开(公告)日：2015-06-18
申请号：US14413777
申请日：2012-07-12
CPC分类号： F01N3/035 , B01D53/944 , B01D2046/2437 , B01D2255/9155 , B01D2255/9205 , F01N3/0222 , F01N3/0232 , F01N3/0253 , F01N9/002 , F01N11/00 , F01N11/002 , F01N2240/38 , F01N2250/02 , F01N2510/0682 , F01N2550/04 , F01N2560/05 , F01N2560/08 , F01N2610/03 , F01N2900/0412 , F01N2900/0418 , F01N2900/1402 , F01N2900/1406 , F01N2900/1606 , F02D41/0055 , F02D41/029 , F02D2200/0812 , 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 which separate 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 said coated layer, are defined, and the ash in the exhaust gas can pass through the partition wall in the non-coated zone. Judgment processing which judges if a particulate matter trapping rate of the particulate filter has fallen below an allowable lower limit value is performed. PM removal processing is performed when it is judged that the particulate matter trapping rate has fallen below the allowable lower limit value.
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离的多孔分隔壁。 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 通过所述涂层被限定，并且废气中的灰分可以通过非涂覆区域中的分隔壁。 判断微粒过滤器的颗粒物捕获率是否已经低于容许下限值的判定处理。 当判断为颗粒物质捕获率已经下降到允许的下限值以下时，进行PM去除处理。
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公开(公告)号：US20140216016A1
公开(公告)日：2014-08-07
申请号：US14127355
申请日：2012-06-29
申请人： Hiroshi Otsuki , Shigeki Nakayama , Hiromasa Nishioka , Katsuhiko Oshikawa , Yoshihisa Tsukamoto , Junichi Matsuo , Yuichi Sobue , Daichi Imai , Kou Sugawara
发明人： Hiroshi Otsuki , Shigeki Nakayama , Hiromasa Nishioka , Katsuhiko Oshikawa , Yoshihisa Tsukamoto , Junichi Matsuo , Yuichi Sobue , Daichi Imai , Kou Sugawara
IPC分类号： F01N3/023
CPC分类号： F01N3/023 , B01D41/00 , B01D46/00 , B01D46/006 , B01D46/0061 , B01D46/2418 , B01D46/32 , B01D53/64 , B01D53/82 , B01D2257/302 , B01D2259/40083 , B01D2279/30 , F01N3/00 , F01N3/021 , F01N3/022 , F01N3/0222 , F01N3/0232 , F01N3/035 , F01N3/085
摘要： A wall flow type particulate filter is arranged inside the exhaust passage of an internal combustion engine where combustion is performed under an excess of oxygen. The particulate filter carries a solid acid. The solid acid has an acid strength which is higher than the acid strength of sulfurous acid and lower than the acid strength of sulfuric acid. To remove the ash from the particulate filter, ash atomization processing for rendering the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature is temporarily performed.
摘要翻译： 壁流式微粒过滤器布置在内燃机的排气通道内部，其中在过量的氧气下进行燃烧。 颗粒过滤器携带固体酸。 固体酸的酸强度高于亚硫酸的酸强度，低于硫酸的酸强度。 为了从颗粒过滤器除去灰分，临时进行用于使微粒过滤器的状态为灰尘雾化处理的状态，其中流入颗粒过滤器的废气的浓度降低，并且微粒过滤器的温度升高。
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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：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：US20070255484A1
公开(公告)日：2007-11-01
申请号：US11628494
申请日：2005-09-13
申请人： Daichi Imai , Shigeki Nakayama , Takao Fukuma
发明人： Daichi Imai , Shigeki Nakayama , Takao Fukuma
IPC分类号： F02D28/00
CPC分类号： F02D41/0072 , F02B29/0406 , F02B2275/14 , F02D41/0007 , F02D41/1462 , F02D2041/0017 , F02M26/05 , F02M26/23 , F02M26/46 , F02M26/47 , Y02T10/123 , Y02T10/144 , Y02T10/47
摘要： This control apparatus obtains a relation (trade-off line) between NOx generation amount and PM generation amount with EGR ratio serving as a parameter from an NOx generation amount estimation model which calculates the NOx generation amount on the basis of the oxygen mole concentration of intake gas and a PM generation amount estimation model which calculates the PM generation amount on the basis of an excess air factor. Further, the control apparatus obtains a straight line (ratio determination line) which passes through a point (appropriate point A) corresponding to a combination of steady-condition appropriate values of the NOx generation amount and the PM generation amount under the present operating conditions and which has a slope K determined in consideration of a regulation value based on a law relating to emission control. The control apparatus uses an intersection (target point B) between the trade-off line and the ratio determination line as an emission target value, and sets an EGR ratio target value Regrt to an EGR ratio corresponding to the target point B.
摘要翻译： 该控制装置从NOx生成量估计模型获得NOx生成量与PM生成量之间的关系（权衡关系），其中，EGR比用作为参数的EGR率，该NOx生成量估计模型基于进气的氧摩尔浓度计算NOx生成量 气体和PM生成量估计模型，其根据过量空气系数计算PM生成量。 此外，控制装置获得通过与当前运行条件下的NOx生成量的稳定值适当值和PM生成量的组合对应的点（适当点A）的直线（比例判定线），以及 其具有考虑到基于与排放控制有关的规则的调节值而确定的坡度K. 控制装置使用权衡线和比例判定线之间的交点（目标点B）作为排放目标值，并将EGR率目标值Regrt设定为与目标点B对应的EGR率。
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公开(公告)号：US08443592B2
公开(公告)日：2013-05-21
申请号：US13265713
申请日：2009-05-18
IPC分类号： F01N3/10
CPC分类号： F01N3/0814 , F01M1/10 , F01M2001/1028 , F01N3/0842 , F01N3/085 , F01N3/0871 , F01N2900/1612 , F02M37/0047 , F16N2250/00
摘要： An exhaust purification system is provided with an NOx storage reduction catalyst arranged in an exhaust passage and an SOx trap material arranged upstream of the NOx storage reduction catalyst and removes SOx contained in exhaust gas. A main flow path has a secondary flow path connected to it. In the secondary flow path, a removal device is arranged for removing the sulfur constituent contained in fuel. The secondary flow path includes an opening and closing device. When the SOx removal rate of the SOx trap material becomes a predetermined removal rate judgment value or less or the concentration of the SOx which flows into the SOx trap material becomes a predetermined concentration judgment value or more, at least part of the fuel flowing through a main flow path is made to flow into the secondary flow path and run through the removal device.
摘要翻译： 排气净化系统设置有布置在排气通道中的NOx储存还原催化剂和设置在NOx存储还原催化剂上游的SOx捕集材料，并且除去废气中所含的SO x。 主流路连接有二次流路。 在二次流路中，设置有去除装在燃料中的硫成分的去除装置。 二次流路包括打开和关闭装置。 当SOx捕集材料的SO x去除率变为预定的去除率判定值或更小或者流入SOx捕集材料的SO x的浓度变为预定浓度判定值或更高时，流经一氧化碳 使主流路流入二次流路并穿过去除装置。
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公开(公告)号：US20120094826A1
公开(公告)日：2012-04-19
申请号：US13259500
申请日：2010-06-16
IPC分类号： B01J21/06
CPC分类号： B01J35/0073 , B01D53/945 , B01D2255/104 , B01D2255/20707 , B01D2255/2092 , B01J21/063 , B01J21/066 , B01J23/34 , B01J23/50 , B01J23/70 , B01J35/0006 , B01J37/0203 , B01J37/0242 , Y02T10/22
摘要： An exhaust gas purifying catalyst includes: a support that contains at least one element that is selected from the first group that consists of Al, Zr and Ce, at least one element that is selected from the second group that consists of Ag, Mn, Co, Cu and Fe, and Ti; and particles that are composed of a metal or oxide of at least one element that is selected from the third group that consists of Ag, Mn, Co, Cu and Fe and that are deposited on the support. Seventy percent or more of any plurality of measurement points with a diameter of 2 nm on a surface of the support are composed of a composite part that has the at least one element selected from the second group content of 0.5 to 10 mol % and has a Ti content of 0.3 mol % or greater.
摘要翻译： 废气净化催化剂包括：载体，其含有选自由Al，Zr和Ce组成的第一组中的至少一种元素，选自由Ag，Mn，Co组成的第二组中的至少一种元素 ，Cu和Fe，以及Ti; 以及由选自由Ag，Mn，Co，Cu和Fe组成的并且沉积在载体上的第三组中的至少一种元素的金属或氧化物构成的颗粒。 在支撑体的表面上，直径为2nm的多个测量点中的70％以上的复合部分由选自第二组含量为0.5〜10mol％的至少一种元素组成，具有 Ti含量为0.3摩尔％以上。
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公开(公告)号：US20120055143A1
公开(公告)日：2012-03-08
申请号：US13265713
申请日：2009-05-18
IPC分类号： F01N3/10
CPC分类号： F01N3/0814 , F01M1/10 , F01M2001/1028 , F01N3/0842 , F01N3/085 , F01N3/0871 , F01N2900/1612 , F02M37/0047 , F16N2250/00
摘要： An exhaust purification system is provided with an NOx storage reduction catalyst arranged in an exhaust passage and an SOx trap material arranged upstream of the NOx storage reduction catalyst and removes SOx contained in exhaust gas. A main flow path has a secondary flow path connected to it. In the secondary flow path, a removal device is arranged for removing the sulfur constituent contained in fuel. The secondary flow path includes an opening and closing device. When the SOx removal rate of the SOx trap material becomes a predetermined removal rate judgment value or less or the concentration of the SOx which flows into the SOx trap material becomes a predetermined concentration judgment value or more, at least part of the fuel flowing through a main flow path is made to flow into the secondary flow path and run through the removal device.
摘要翻译： 排气净化系统设置有布置在排气通道中的NOx储存还原催化剂和设置在NOx存储还原催化剂上游的SOx捕集材料，并且除去废气中所含的SO x。 主流路连接有二次流路。 在二次流路中，设置有去除装在燃料中的硫成分的去除装置。 二次流路包括打开和关闭装置。 当SOx捕集材料的SO x去除率变为预定的去除率判定值或更小或者流入SOx捕集材料的SO x的浓度变为预定浓度判定值或更高时，流经一氧化碳 使主流路流入二次流路并穿过去除装置。
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