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公开(公告)号：US20120180462A1
公开(公告)日：2012-07-19
申请号：US13496390
申请日：2009-10-09
申请人： Takamitsu Asanuma , Hiromasa Nishioka , Yoshihisa Tsukamoto , Junichi Matsuo , Kazuhiro Umemoto
发明人： Takamitsu Asanuma , Hiromasa Nishioka , Yoshihisa Tsukamoto , Junichi Matsuo , Kazuhiro Umemoto
IPC分类号： F01N3/24
CPC分类号： F01N13/02 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2066 , F01N3/2073 , F01N2900/1404 , Y02T10/24
摘要： An exhaust purification system of an internal combustion engine has a selective reduction type NOX catalyst device which can hold ammonia and a storage reduction type NOX catalyst device which is arranged at an upstream side of the selective reduction type NOX catalyst device, which makes an air-fuel ratio of exhaust gas which flows into the storage reduction type NOX catalyst device change from a lean air-fuel ratio to a rich air-fuel ratio for starting an ammonia generation period, and which makes an air-fuel ratio of exhaust gas which flows into the storage reduction type NOX catalyst device change from a rich air-fuel ratio to a lean air-fuel ratio for ending the ammonia generation period.
摘要翻译： 内燃机的排气净化系统具有能够容纳氨的选择还原型NO x催化剂装置和配置在选择还原型NO X催化剂装置的上游侧的储存还原型NO x催化剂装置， 流入储存还原型NO x催化剂装置的废气的燃料比从稀空燃比变为用于开始氨生成期间的浓空燃比，并且使流动的排气的空燃比 进入储存还原型NO x催化剂装置从富空燃比变为稀空燃比以终止氨生成周期。
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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：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：US20110209462A1
公开(公告)日：2011-09-01
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： In an exhaust purification system of an internal combustion engine, comprising a NOX catalyst device, which can satisfactorily store NOX in the exhaust gas when the concentration of oxygen in the exhaust gas is high and can release the stored NOX and purify the released NOX to N2 by reducing materials in the exhaust gas when the concentration of oxygen is decreased as a regeneration treatment, the regeneration treatment is carried out to change a combustion air-fuel ratio from a lean air-fuel ratio to a set rich air-fuel ratio, and N2O reducing material is supplied to the NOX catalyst device during at least one of a first period set within a period in which an air-fuel ratio in the exhaust gas within said NOX catalyst device changes from the lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started and a second period set within a period after an air-fuel ratio in the exhaust gas within the NOX catalyst device becomes the stoichiometric air-fuel ratio when the regeneration treatment is finished.
摘要翻译： 在内燃机的排气净化系统中，包括NO x催化剂装置，当废气中的氧浓度高时能够令人满意地将NO x储存在排气中，能够释放储存的NO x并将释放的NO x净化为N2 当通过再生处理使氧气浓度降低时，通过减少废气中的材料，进行再生处理，以将燃烧空燃比从稀空燃比变为浓空燃比，并且 在所述NO x催化剂装置内的排气中的空燃比从所述稀空燃比变为所述浓空燃比的期间内设定的第一期间中的至少一个中，向所述NO x催化剂装置供给N 2 O还原材料 当再生处理开始时的空燃比和在NO x催化剂装置内的排气中的空燃比后的期间内设定的第二期间成为理论空燃比 o当再生处理完成时。
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公开(公告)号：US08590293B2
公开(公告)日：2013-11-26
申请号：US13395316
申请日：2009-10-21
CPC分类号： F01N3/0821 , F01N3/0253 , F01N3/031 , F01N3/0842 , F01N3/0885 , F01N2900/1612 , F02D41/0275 , F02D41/028
摘要： The exhaust purification system of an internal combustion engine of the present invention is provided with an NOX storage reduction catalyst and a particulate filter which is arranged at the upstream side of the NOX storage reduction catalyst. When causing the NOX storage reduction catalyst to release the stored NOX, the particulate filter is raised to the temperature at which the particulate matter is oxidized, the flow rate of the exhaust gas which flows into the particulate filter is made to decrease, the air-fuel ratio of the exhaust gas which flows into the particulate filter is made rich, and the particulate matter which builds up on the particulate filter is made to oxidize to produce carbon monoxide.
摘要翻译： 本发明的内燃机的排气净化系统设置有NO x储存还原催化剂和颗粒过滤器，其设置在NO x储存还原催化剂的上游侧。 当使NO x储存还原催化剂释放储存的NO x时，颗粒过滤器升高到颗粒物质被氧化的温度，使流入微粒过滤器的废气的流量减小， 流入颗粒过滤器的排气的燃料比变浓，并且使颗粒过滤器上积聚的颗粒物质氧化生成一氧化碳。
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公开(公告)号：US20120198824A1
公开(公告)日：2012-08-09
申请号：US13395316
申请日：2009-10-21
IPC分类号： F01N3/035
CPC分类号： F01N3/0821 , F01N3/0253 , F01N3/031 , F01N3/0842 , F01N3/0885 , F01N2900/1612 , F02D41/0275 , F02D41/028
摘要： The exhaust purification system of an internal combustion engine of the present invention is provided with an NOX storage reduction catalyst and a particulate filter which is arranged at the upstream side of the NOX storage reduction catalyst. When causing the NOX storage reduction catalyst to release the stored NOX, the particulate filter is raised to the temperature at which the particulate matter is oxidized, the flow rate of the exhaust gas which flows into the particulate filter is made to decrease, the air-fuel ratio of the exhaust gas which flows into the particulate filter is made rich, and the particulate matter which builds up on the particulate filter is made to oxidize to produce carbon monoxide.
摘要翻译： 本发明的内燃机的排气净化系统设置有NO x储存还原催化剂和颗粒过滤器，其设置在NO x储存还原催化剂的上游侧。 当使NO x储存还原催化剂释放储存的NO x时，颗粒过滤器升高到颗粒物质被氧化的温度，使流入微粒过滤器的废气的流量减小， 流入颗粒过滤器的排气的燃料比变浓，并且使颗粒过滤器上积聚的颗粒物质氧化生成一氧化碳。
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公开(公告)号：US09109492B2
公开(公告)日：2015-08-18
申请号：US13318973
申请日：2009-06-16
CPC分类号： F01N3/2066 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/106 , F01N13/009 , F01N13/0097 , F01N2570/14 , F01N2570/145 , F01N2570/18 , F01N2610/02 , Y02C20/10 , Y02T10/24
摘要： An exhaust purification system of an internal combustion engine including an ammonia oxidation catalyst device and an ammonia holding device arranged immediately upstream of the ammonia oxidation catalyst device is provided. The ammonia holding device has a solid acid, holds ammonia to restrain the ammonia from flowing into the ammonia oxidation catalyst device when a temperature of the ammonia oxidation catalyst device is within a N2O producing temperature range, and releases the held ammonia to make the ammonia flow into the ammonia oxidation catalyst device when the temperature of the ammonia oxidation catalyst device is out of the N2O producing temperature range.
摘要翻译： 提供了一种内燃机的排气净化系统，该排气净化系统包括氨氧化催化剂装置和布置在氨氧化催化装置的上游的氨保持装置。 当氨氧化催化剂装置的温度在N 2 O生成温度范围内时，氨保持装置具有固体酸，保持氨以约束氨流入氨氧化催化剂装置，并释放保持的氨以使氨流动 当氨氧化催化剂装置的温度超出N2O产生温度范围时，进入氨氧化催化装置。
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公开(公告)号：US20120073273A1
公开(公告)日：2012-03-29
申请号：US13318973
申请日：2009-06-16
IPC分类号： F01N3/10
CPC分类号： F01N3/2066 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/106 , F01N13/009 , F01N13/0097 , F01N2570/14 , F01N2570/145 , F01N2570/18 , F01N2610/02 , Y02C20/10 , Y02T10/24
摘要： An exhaust purification system of an internal combustion engine including an ammonia oxidation catalyst device and an ammonia holding device arranged immediately upstream of the ammonia oxidation catalyst device is provided. The ammonia holding device has a solid acid, holds ammonia to restrain the ammonia from flowing into the ammonia oxidation catalyst device when a temperature of the ammonia oxidation catalyst device is within a N2O producing temperature range, and releases the held ammonia to make the ammonia flow into the ammonia oxidation catalyst device when the temperature of the ammonia oxidation catalyst device is out of the N2O producing temperature range.
摘要翻译： 提供了一种内燃机的排气净化系统，该排气净化系统包括氨氧化催化剂装置和布置在氨氧化催化装置的上游的氨保持装置。 当氨氧化催化剂装置的温度在N 2 O生成温度范围内时，氨保持装置具有固体酸，保持氨以约束氨流入氨氧化催化剂装置，并释放保持的氨以使氨流动 当氨氧化催化剂装置的温度超出N2O产生温度范围时，进入氨氧化催化装置。
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公开(公告)号：US09175590B2
公开(公告)日：2015-11-03
申请号：US13578148
申请日：2011-11-30
申请人： Kazuhiro Umemoto , Kohei Yoshida , Mikio Inoue
发明人： Kazuhiro Umemoto , Kohei Yoshida , Mikio Inoue
IPC分类号： B01D50/00 , F01N3/08 , F01N3/10 , F02D41/14 , F01N13/00 , F01N3/36 , F01N3/021 , F02D41/02 , F01N3/20
CPC分类号： F01N3/0842 , F01N3/021 , F01N3/0814 , F01N3/0871 , F01N3/103 , F01N3/106 , F01N3/2026 , F01N3/2033 , F01N3/36 , F01N13/0097 , F01N2430/06 , F01N2510/0682 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2610/03 , F01N2900/0412 , F01N2900/1404 , F01N2900/1602 , F02D41/0245 , F02D41/0275 , F02D41/1441 , F02D41/1446
摘要： An exhaust purification system of an internal combustion engine provided with an exhaust purification catalyst which reacts NOX and hydrocarbons. The exhaust purification catalyst includes an upstream side catalyst and a downstream side catalyst. The upstream side catalyst has an oxidation ability, while the downstream side catalyst carries precious metal catalyst particles on the exhaust flow surface and is formed with basic exhaust flow surface parts. The exhaust purification catalyst can make the concentration of hydrocarbons vibrate by within a predetermined range of amplitude and by within a predetermined range of period so as to partially oxidize the hydrocarbons or produce reducing intermediates at the upstream side catalyst. When the temperature of the upstream side catalyst is less than a first judgment temperature and the temperature of the downstream side catalyst is higher than a second judgment temperature, the temperature of the upstream side catalyst is made to rise.
摘要翻译： 具有排气净化催化剂的内燃机的排气净化系统，其与NOx反应。 废气净化催化剂包括上游侧催化剂和下游侧催化剂。 上游侧催化剂具有氧化能力，而下游侧催化剂在废气流动面上载有贵金属催化剂颗粒，并形成有碱性废气流表面部分。 排气净化催化剂可以使烃的浓度在预定的振幅范围内振动并在预定的时间范围内，以便部分地氧化烃或在上游侧催化剂上产生还原中间体。 当上游侧催化剂的温度低于第一判断温度且下游侧催化剂的温度高于第二判定温度时，上游侧催化剂的温度上升。
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