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公开(公告)号：US20080314025A1
公开(公告)日：2008-12-25
申请号：US11885153
申请日：2006-10-04
IPC分类号： F01N9/00
CPC分类号： B01D53/9431 , B01D53/9495 , B01D2255/91 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N9/00 , F01N2550/03 , F01N2560/026 , F01N2570/14 , F01N2610/03 , F01N2610/146 , Y02A50/2344 , Y02T10/47
摘要： A device for purifying exhaust gas of an internal combustion engine comprising a NOx catalyst device, fuel feeding means for feeding additional fuel into combusted gas flowing into the NOx catalyst device during the regeneration treatment, and a NOx concentration sensor arranged on the exhaust downstream of the NOx catalyst device, wherein when the NOx concentration detected by the NOx concentration sensor is lower than a preset concentration during the regeneration treatment of this time, the amount of NOx absorbed by the NOx catalyst device during a preset period until the regeneration treatment of the next time is estimated by utilizing the NOx concentration sensor, and when the absorbed amount of NOx is smaller than a preset amount, it is decided that the amount of additional fuel fed during the regeneration processing of this time had been abnormally decreased.
摘要翻译： 一种用于净化内燃机废气的装置，包括NOx催化装置，用于在再生处理期间将附加燃料供给到流入NOx催化剂装置的燃烧气体中的燃料供给装置，以及配置在排气下游的排气口的NOx浓度传感器 NO x催化剂装置，其中，当在该再生处理期间，由NOx浓度传感器检测到的NOx浓度低于预先设定的浓度时，由NOx催化剂装置吸收的NOx的量在下一次的再生处理之前的预设期间内 通过利用NOx浓度传感器来估计时间，并且当NOx的吸收量小于预设量时，判定在该时间的再生处理中供给的附加燃料量已经异常地降低。
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公开(公告)号：US20080098729A1
公开(公告)日：2008-05-01
申请号：US11883936
申请日：2006-12-01
IPC分类号： F01N3/10
CPC分类号： F01N3/0814 , B01D53/90 , B01D53/9422 , B01D53/9486 , B01D53/9495 , B01D2251/208 , B01D2255/91 , F01N3/035 , F01N3/0835 , F01N3/0842 , F01N3/106 , F01N3/2006 , F01N9/00 , F01N11/002 , F01N11/007 , F01N13/0097 , F01N2610/03 , F02B37/00 , F02D41/0255 , F02D41/027 , F02D41/0275 , F02D41/10 , Y02T10/26 , Y02T10/47
摘要： A device for purifying exhaust gas of an internal combustion engine is provided, equipped with an HC catalyst having the ability to oxidize HC, as well as adsorb HC, and release HC which it has adsorbed, and there exists a specific condition where the amount to release HC becomes greater than the amount to oxidize HC, wherein the device for purifying exhaust gas of an internal combustion engine executes an HC feed control for feeding HC to the HC catalyst. The amount of HC fed to the HC catalyst is decreased by the HC feed control or the HC feed control is discontinued when the specific condition is established during execution of the HC feed control.
摘要翻译： 提供了一种用于净化内燃机废气的装置，其具有能够使HC氧化并且吸附HC并释放其吸附的HC的HC催化剂，并且存在如下特定条件： 释放HC变得大于氧化HC的量，其中用于净化内燃机的废气的装置执行HC供给控制以将HC供给到HC催化剂。 当在HC进料控制的执行期间建立特定条件时，通过HC进料控制或HC进料控制停止供给到HC催化剂的HC的量。
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公开(公告)号：US20070277513A1
公开(公告)日：2007-12-06
申请号：US11660518
申请日：2006-08-09
IPC分类号： F01N3/10
CPC分类号： B01D53/9422 , B01D2251/208 , B01D2255/1021 , B01D2255/1023 , B01D2255/904 , B01D2255/915 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/0864 , F01N3/103 , F01N3/2033 , F01N13/009 , F02B37/00 , Y02T10/26
摘要： An engine exhaust passage is provided with a fuel addition valve (14) for adding fuel in the form of atomized drops, an oxidation catalyst (11), and an NOx storage and reduction catalyst (12) in that order. The oxidation catalyst (11) carries as a precious metal not only platinum Pt, but also palladium Pd. A molar ratio of the platinum Pt with respect to the sum of the platinum Pt and palladium Pd carried on the oxidation catalyst (11) is set to between about 50 percent to about 80 percent.
摘要翻译： 发动机排气通道设置有用于以雾化液滴的形式添加燃料的燃料添加阀（14），氧化催化剂（11）和NO x x储存和还原催化剂（12） 那个订单。 氧化催化剂（11）不仅携带铂铂，而且还载钯钯作为贵金属。 将铂Pt相对于载持在氧化催化剂（11）上的铂Pt和钯Pd的总和的摩尔比设定在约50％至约80％之间。
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公开(公告)号：US20140112833A1
公开(公告)日：2014-04-24
申请号：US14110895
申请日：2011-07-04
IPC分类号： B01D53/94
CPC分类号： B01D53/9459 , B01D53/9431 , B01D53/9495 , B01D2251/2067 , B01D2255/904 , F01N3/035 , F01N3/108 , F01N3/2066 , F01N13/008 , F01N13/009 , F01N13/0093 , F01N2560/05 , F01N2610/02 , Y02T10/24
摘要： The purpose of the present invention is to suppress degradation of a PM sensor and a decrease in detection accuracy of the amount of PM in a configuration in which a urea addition unit and a selective reduction-type NOx catalyst (NOx catalyst) are provided downstream of a particulate filter (filter) in an internal corn engine exhaust passage, the PM sensor being disposed downstream of the filter. According to the present invention, in an exhaust passage (2) of an internal combustion engine (1), a first NOx catalyst (4) and a second NOx catalyst (5) are disposed downstream of a fitter (3) successively from the upstream side along the flow of exhaust. A urea addition unit (6) is disposed between the filter (3) and the first NOx catalyst (4). A PM sensor (7) is disposed between the first NOx catalyst (4) and the second NOx catalyst (5).
摘要翻译： 下游的尿素添加单元和选择还原型NOx催化剂（NOx催化剂）的配置中，本发明的目的是抑制PM传感器的劣化和PM的量的检测精度的降低 在内部玉米发动机排气通道中的微粒过滤器（过滤器），PM传感器设置在过滤器的下游。 根据本发明，在内燃机（1）的排气通路（2）中，第一NOx催化剂（4）和第二NOx催化剂（5）从上游依次配置在钳具（3）的下游 沿着排气流。 尿素添加单元（6）设置在过滤器（3）和第一NOx催化剂（4）之间。 PM传感器（7）设置在第一NOx催化剂（4）和第二NOx催化剂（5）之间。
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公开(公告)号：US08409536B2
公开(公告)日：2013-04-02
申请号：US13395766
申请日：2010-05-14
CPC分类号： F01N3/208 , B01D53/90 , B01D53/9431 , B01D2251/2067 , B01D2255/30 , B01D2255/50 , B01D2255/911 , F01N2560/026 , F01N2610/02 , F01N2610/146 , F01N2900/0408 , F01N2900/1402 , F01N2900/1622 , Y02T10/24
摘要： A technique that, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH3 from passing through a selective reduction type NOx catalyst to a downstream side thereof. The selective reduction type NOx catalyst has an active spot which purifies NOx by the use of NH3, and an adsorption site which adsorbs NH3, wherein a vicinity site, which is located in the vicinity of the active spot, and a distant site, which is located distant from the active spot, exist in the adsorption site. The addition of the reducing agent from the reducing agent addition part is controlled based on the desorption rate of NH3 in the vicinity site so as to continue to cause the NH3 adsorbed to the vicinity site to exist.
摘要翻译： 一种在内燃机的排气净化装置中，通过尽可能连续地添加还原剂，能够避免NH 3通过选择还原型NOx催化剂到下游的NOx排出净化装置的技术 侧。 选择还原型NOx催化剂具有通过使用NH 3净化NOx的活性点和吸附NH 3的吸附位置，其中位于活性点附近的附近位置和远离位置是 位于远离活性斑点，存在于吸附位点。 还原剂从还原剂添加部分的添加基于邻近位置处的NH 3的解吸速率进行控制，从而继续存在吸附在附近的NH 3。
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公开(公告)号：USRE42156E1
公开(公告)日：2011-02-22
申请号：US10410386
申请日：2003-04-10
IPC分类号： F01N3/00
CPC分类号： B01D53/9454 , B01D53/949 , F01N3/0205 , F01N3/0835 , F01N3/0842 , F01N3/085 , F01N3/0871 , F01N3/0878 , F01N3/0885 , F01N3/2093 , F01N13/009 , F01N13/011 , F01N2240/16 , F01N2250/12 , F01N2560/026 , F01N2570/04 , Y02T10/22
摘要： An exhaust emission control system of an internal combustion engine desorbs SOx by reversing a flow of an exhaust gas through an NOx storage-reduction catalyst, of which a structure is simplified as follows. A first exhaust pipe connected to an engine is connected to a first port of an emission switching valve having four ports. A second exhaust pipe 10, through which the exhaust gas is discharged into the atmospheric air, is connected to a second port, a third exhaust pipe connected to an inlet of a catalytic converter is connected to a third port. A fourth exhaust pipe connected to an outlet of the catalytic converter 30 is connected to a fourth port. When the emission switching valve is set in a forward flow position, the first exhaust pipe is connected to the third exhaust pipe, and the second exhaust pipe is connected to the fourth exhaust pipe, whereby the exhaust gas flows toward the outlet from the inlet within the catalytic converter. When the emission switching valve is set in a backward flow position, the first exhaust pipe is connected to the fourth exhaust pipe, and the second exhaust pipe is connected to the third exhaust pipe, whereby the exhaust gas flows toward the inlet from the outlet within the catalytic converter.
摘要翻译： 内燃机的废气排放控制系统通过将废气流通过NOx吸留还原催化剂反转来解吸SOx，其结构简化如下。 连接到发动机的第一排气管连接到具有四个端口的排放切换阀的第一端口。 将废气排放到大气中的第二排气管10连接到第二端口，连接到催化转化器的入口的第三排气管连接到第三端口。 连接到催化转化器30的出口的第四排气管连接到第四端口。 当排放切换阀设置在正向流动位置时，第一排气管连接到第三排气管，第二排气管连接到第四排气管，由此排气从入口内的出口流动 催化转化器。 当排放切换阀设置在向后流动位置时，第一排气管连接到第四排气管，第二排气管连接到第三排气管，由此排气从出口内的入口流入 催化转化器。
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公开(公告)号：US09221017B2
公开(公告)日：2015-12-29
申请号：US14110895
申请日：2011-07-04
CPC分类号： B01D53/9459 , B01D53/9431 , B01D53/9495 , B01D2251/2067 , B01D2255/904 , F01N3/035 , F01N3/108 , F01N3/2066 , F01N13/008 , F01N13/009 , F01N13/0093 , F01N2560/05 , F01N2610/02 , Y02T10/24
摘要： The purpose of the present invention is to suppress degradation of a PM sensor and a decrease in detection accuracy of the amount of PM in a configuration in which a urea addition unit and a selective reduction-type NOx catalyst (NOx catalyst) are provided downstream of a particulate filter (filter) in an internal combustion engine exhaust passage, the PM sensor being disposed downstream of the filter. According to the present invention, in an exhaust passage (2) of an internal combustion engine (1), a first NOx catalyst (4) and a second NOx catalyst (5) are disposed downstream of a filter (3) successively from the upstream side along the flow of exhaust. A urea addition unit (6) is disposed between the filter (3) and the first NOx catalyst (4). A PM sensor (7) is disposed between the first NOx catalyst (4) and the second NOx catalyst (5).
摘要翻译： 下游的尿素添加单元和选择还原型NOx催化剂（NOx催化剂）的配置中，本发明的目的是抑制PM传感器的劣化和PM的量的检测精度的降低 内燃机排气通道中的微粒过滤器（过滤器），PM传感器设置在过滤器的下游。 根据本发明，在内燃机（1）的排气通路（2）中，第一NOx催化剂（4）和第二NOx催化剂（5）从上游依次配置在过滤器（3）的下游 沿着排气流。 尿素添加单元（6）设置在过滤器（3）和第一NOx催化剂（4）之间。 PM传感器（7）设置在第一NOx催化剂（4）和第二NOx催化剂（5）之间。
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38.发明申请EXHAUST GAS CONTROL APPARATUS AND REDUCTANT DISPENSING METHOD FOR INTERNAL COMBUSTION ENGINE 有权用于内燃机的排气控制装置和减排分配方法公开(公告)号：US20130108529A1
公开(公告)日：2013-05-02
申请号：US13807133
申请日：2011-07-06
CPC分类号： B01D53/0454 , B01D53/90 , B01D53/9495 , B01D2251/2067 , B01D2257/404 , B01D2258/012 , F01N3/035 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N2250/02 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2570/14 , F01N2610/02 , F01N2900/0408 , F01N2900/1402 , F01N2900/1621 , F01N2900/1622 , G05D7/00 , Y02A50/2344 , Y02T10/24 , Y02T10/47
摘要： Utilizing the finding that the state of adsorption of NH3 on a selective reduction type NOx catalyst includes a weakly adsorbed state in which the adsorbed NH3 is useful for a reduction reaction of NOx and a strongly adsorbed state in which the adsorbed NH3 is not useful for the reduction reaction of NOx unless the state of adsorption is changed into the weakly adsorbed state, the apparatus of the invention includes an actual weakly-adsorbed amount-calculation NH3 that is adsorbed on the selective reduction type NOx catalyst in the weakly adsorbed state, and a dispensation control portion that performs a dispensation control of the reductant dispensed by a reductant-dispensation portion, according to the actual weakly adsorbed amount calculated by the actual weakly adsorbed amount calculation portion.
摘要翻译： 利用NH 3在选择性还原型NOx催化剂上的吸附状态包括弱吸附状态，其中吸附的NH 3可用于NOx的还原反应和强吸附状态，其中吸附的NH 3对于 除非吸附状态变为弱吸附状态，否则NOx的还原反应，本发明的装置包括吸附在弱吸附状态的选择还原型NOx催化剂上的实际弱吸附量计算NH 3，以及 分配控制部，其根据实际的弱吸附量计算部计算出的实际弱吸附量，对由还原剂分配部分分配的还原剂进行分配控制。
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公开(公告)号：US20130052107A1
公开(公告)日：2013-02-28
申请号：US13395766
申请日：2010-05-14
CPC分类号： F01N3/208 , B01D53/90 , B01D53/9431 , B01D2251/2067 , B01D2255/30 , B01D2255/50 , B01D2255/911 , F01N2560/026 , F01N2610/02 , F01N2610/146 , F01N2900/0408 , F01N2900/1402 , F01N2900/1622 , Y02T10/24
摘要： A technique that, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH3 from passing through a selective reduction type NOx catalyst to a downstream side thereof. The selective reduction type NOx catalyst has an active spot which purifies NOx by the use of NH3, and an adsorption site which adsorbs NH3, wherein a vicinity site, which is located in the vicinity of the active spot, and a distant site, which is located distant from the active spot, exist in the adsorption site. The addition of the reducing agent from the reducing agent addition part is controlled based on the desorption rate of NH3 in the vicinity site so as to continue to cause the NH3 adsorbed to the vicinity site to exist.
摘要翻译： 一种在内燃机的排气净化装置中，通过尽可能连续地添加还原剂，能够避免NH 3通过选择还原型NOx催化剂到下游的NOx排出净化装置的技术 侧。 选择还原型NOx催化剂具有通过使用NH 3净化NOx的活性点和吸附NH 3的吸附位置，其中位于活性点附近的附近位置和远离位置是 位于远离活性斑点，存在于吸附位点。 还原剂从还原剂添加部分的添加基于邻近位置处的NH 3的解吸速率进行控制，从而继续存在吸附在附近的NH 3。
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公开(公告)号：US06502391B1
公开(公告)日：2003-01-07
申请号：US09890216
申请日：2001-07-24
IPC分类号： F01N300
CPC分类号： F01N3/2053 , F01N3/0814 , F01N3/0835 , F01N3/0842 , F01N3/085 , F01N3/0878 , F01N3/0885 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N13/011 , F01N2430/085 , F01N2570/04 , F01N2570/14 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： An object of the present invention is to improve reliability of exhaust emission purification in an exhaust emission purifying device having an NOx catalyst and an bypass path bypassing the NOx catalyst. The present invention provides an exhaust emission purifying device including an SOx absorbing material 17 provided in an exhaust passage of an internal combustion engine, a main NOx catalyst 20 provided in the exhaust passage on the downstream side of the SOx absorbing material, a bypass pipe 26 branching off from the exhaust passage at a position between the SOx absorbing material 17 and the main NOx catalyst 20, and an exhaust switching valve 28 provided at the start end of the bypass pipe 26 and adapted to switch the exhaust flow between the main NOx catalyst 20 and the bypass pipe 26, wherein a sub NOx catalyst 24 is provided in the bypass pipe 26 and wherein when the exhaust switching valve 28 is controlled so as to lead the exhaust to the main NOx catalyst 20 and as to prevent the exhaust from flowing through the bypass pipe 26, any exhaust leaking from the exhaust switching valve 28 to the bypass pipe 26 is purified by the sub NOx catalyst 24.
摘要翻译： 本发明的目的在于提高具有NOx催化剂和绕过NOx催化剂的旁路的排气净化装置的排气净化装置的可靠性。 本发明提供了一种排气净化装置，其包括设置在内燃机的排气通路中的SOx吸收材料17，设置在SO x吸收材料的下游侧的排气通路中的主NOx催化剂20，旁通管26 在SO x吸收材料17和主NOx催化剂20之间的位置处从排气通道分支;以及排气切换阀28，其设置在旁通管26的起始端，并且适于切换主NOx催化剂 20和旁通管26，其中副NOx催化剂24设置在旁通管26中，并且其中当排气切换阀28被控制以将排气引导到主NOx催化剂20并且为了防止排气流动 通过旁通管26，通过副NOx催化剂24净化从排气切换阀28向旁通管26泄漏的任何废气。
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