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公开(公告)号：US20150192047A1
公开(公告)日：2015-07-09
申请号：US14409743
申请日：2012-06-20
CPC分类号： F01N3/0842 , B01D53/9431 , B01D53/9495 , F01N3/021 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N13/009 , F01N2610/02 , F01N2900/1616 , F01N2900/1812 , Y02T10/24 , Y02T10/47
摘要： An object of the present invention is to provide a technique with which an amount of reducing agent adsorbed to a selective reduction type NOx catalyst provided in an exhaust passage of an internal combustion engine can be controlled to a target adsorption amount. In an exhaust gas purification system for an internal combustion engine according to the present invention, when a reducing agent adsorption amount adsorbed on a selective reduction type NOx catalyst is held at a target adsorption amount, a reducing agent supply amount supplied from a supply apparatus per unit time is controlled to an amount obtained by adding a predetermined amount to a reduction consumption amount, which is an amount of reducing agent consumed per unit time by the selective reduction type NOx catalyst for NOx reduction.
摘要翻译： 本发明的目的是提供一种技术，其中可以将设置在内燃机的排气通道中的选择还原型NOx催化剂吸附的还原剂的量控制在目标吸附量。 在本发明的内燃机的废气净化系统中，当吸附在选择还原型NOx催化剂上的还原剂吸附量保持在目标吸附量时，从供给装置供给的还原剂供给量 单位时间被控制为通过将预定量添加到通过用于NOx还原的选择还原型NOx催化剂的每单位时间消耗的还原剂量的减少消耗量而获得的量。
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2.发明申请公开(公告)号：US20150184569A1
公开(公告)日：2015-07-02
申请号：US14409652
申请日：2012-06-20
CPC分类号： F01N3/208 , B01D53/9431 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2900/0416 , F01N2900/0601 , F01N2900/1616 , F01N2900/1622 , Y02T10/24 , Y02T10/47
摘要： To estimate an amount of reducing agent adsorbed to a selective reduction type NOx catalyst with a higher degree of precision, an amount of variation over a predetermined time in a reducing agent amount adsorbed to a selective reduction type NOx catalyst is calculated from an upper limit value of a reducing agent amount that is adsorbed to the selective reduction type NOx catalyst when the reducing agent is supplied continuously by a supply unit, which is calculated on the basis of a temperature of the selective reduction type NOx catalyst, and the reducing agent amount adsorbed to the selective reduction type NOx catalyst, whereupon a reducing agent amount adsorbed to the selective reduction type NOx catalyst following the elapse of the predetermined time is estimated by adding the variation amount to the reducing agent amount adsorbed to the selective reduction type NOx catalyst.
摘要翻译： 为了以更高的精度估计吸附到选择还原型NOx催化剂的还原剂的量，从吸附到选择还原型NOx催化剂的还原剂量中的预定时间内的变化量从上限值 当由选择还原型NOx催化剂的温度计算的供应单元连续供给还原剂时吸附到选择还原型NOx催化剂上的还原剂量和还原剂吸附量的还原剂量 涉及选择还原型NOx催化剂，通过将吸附在选择还原型NOx催化剂上的还原剂量的变化量加到预定时间后吸附到选择还原型NOx催化剂上的还原剂量来估计。
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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：US08505283B2
公开(公告)日：2013-08-13
申请号：US12529088
申请日：2008-12-26
IPC分类号： F01N3/10
CPC分类号： F01N3/2066 , B01D53/9418 , B01D53/9431 , B01D53/944 , B01D53/9477 , B01D2251/2067 , B01D2255/1021 , B01D2255/20707 , B01D2255/20723 , B01D2255/20738 , B01D2255/50 , F01N3/035 , F01N3/106 , F01N3/208 , F01N11/00 , F01N13/009 , F01N13/0097 , F01N2560/026 , F01N2610/02 , F01N2610/1406 , F01N2900/1806 , F01N2900/1814 , F01N2900/1818 , Y02T10/24 , Y02T10/47 , Y10T137/7287
摘要： An internal combustion engine, in which an NOX selective reducing catalyst (15) is arranged inside an engine exhaust passage, and aqueous urea stored in an aqueous urea tank (20) is fed to the NOX selective reducing catalyst (15) to selectively reduce the NOX. The aqueous urea tank (20) comprises a main tank (20a) and a sub tank (20b) arranged inside the main tank (20a). The aqueous urea in the sub tank (20b) is sent to an aqueous urea feed valve (17). When the aqueous urea tank (20) should be refilled with aqueous urea, the sub tank (20b) is refilled with aqueous urea. It is detected by a level sensor (40) if the aqueous urea in the aqueous urea tank (20) is refilled. When it is judged that the NOX purification rate falls below an allowable level at the time of engine operation right after the aqueous urea in the aqueous urea tank (20) has been refilled, it is judged that the refilled aqueous urea is abnormal.
摘要翻译： 一种内燃机，其中在发动机排气通道内部配置有NO x选择还原催化剂（15），并且将储存在尿素水箱（20）中的尿素水供给到NO x选择还原催化剂（15）中，以选择性地将 NOX。 尿素水箱（20）包括设置在主罐（20a）内的主罐（20a）和副罐（20b）。 副罐（20b）中的尿素水被送入尿素供给阀（17）。 当尿素水箱（20）应重新填充尿素水溶液时，副罐（20b）用尿素水重新填充。 如果尿素水箱（20）中的含水尿素被再填充，则由液位传感器（40）检测。 当在尿素水箱（20）中的尿素水被再填充之后，当NOX净化率低于发动机运转时的容许水平时，判断再填充的尿素水不正常。
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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：US08225596B2
公开(公告)日：2012-07-24
申请号：US12450276
申请日：2008-03-04
申请人： Shunsuke Toshioka , Tomihisa Oda , Kazuhiro Itoh
发明人： Shunsuke Toshioka , Tomihisa Oda , Kazuhiro Itoh
IPC分类号： F01N3/00
CPC分类号： F01N3/2066 , F01N3/0835 , F01N9/00 , F01N13/009 , F01N2570/00 , F01N2570/12 , Y02T10/24 , Y02T10/47
摘要： In an internal combustion engine, a urea adsorption type selective reduction catalyst is arranged in an engine exhaust passage. By feeding urea from a urea feed valve into the exhaust gas flowing into this selective reduction catalyst, the NOx included in the exhaust gas is reduced in the selective reduction catalyst. TO suppress the generation of hydrogen cyanide, an HC adsorption catalyst for adsorption of the HC in the exhaust gas is arranged in the engine exhaust passage upstream of the selective reduction catalyst.
摘要翻译： 在内燃机中，尿素吸附式选择还原催化剂配置在发动机排气通路内。 通过将尿素从尿素进料阀送入流入该选择还原催化剂的废气中，选择还原催化剂中的排气中包含的NOx降低。 为了抑制氰化氢的产生，在选择还原催化剂上游的发动机排气通道中配置有用于吸附废气中的HC的HC吸附催化剂。
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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：US20100111774A1
公开(公告)日：2010-05-06
申请号：US12450604
申请日：2008-04-07
申请人： Shunsuke Toshioka , Tomihisa Oda , Kazuhiro Itoh
发明人： Shunsuke Toshioka , Tomihisa Oda , Kazuhiro Itoh
CPC分类号： F01N3/208 , B01D53/9409 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D53/96 , B01D2251/2067 , B01D2258/012 , F01N3/023 , F01N3/0231 , F01N3/0253 , F01N3/033 , F01N3/106 , F01N3/2066 , F01N9/002 , F01N13/009 , F01N2560/06 , F01N2570/10 , F01N2570/14 , F01N2570/18 , F01N2610/02 , F01N2900/1402 , F01N2900/1622 , Y02A50/2344 , Y02T10/24 , Y02T10/47
摘要： An object of the present invention is to suppress, in a system in which an NOx selective catalytic reduction catalyst and a particulate filter are provided in an exhaust passage of an internal combustion engine, discharge of ammonia from the NOx selective catalytic reduction catalyst. In the exhaust gas purification system for an internal combustion engine according to the present invention, when a condition for executing a filter temperature raising control is satisfied, the supply of urea to the NOx selective catalytic reduction catalyst by urea supply means is stopped, and the filter temperature raising control is executed by filter temperature raising means after a specific time has elapsed since the time of stoppage of the supply of urea to the NOx selective catalytic reduction catalyst.
摘要翻译： 本发明的目的在于，在内燃机的排气通路中设置NOx选择催化还原催化剂和微粒过滤器的系统中，从NOx选择催化还原催化剂排出氨。 在本发明的内燃机废气净化系统中，当满足进行过滤器升温控制的条件时，停止通过尿素供给机构向NOx选择催化还原催化剂的尿素供给， 过滤器升温控制在从尿素供应停止到NOx选择催化还原催化剂的时间经过一定时间之后由过滤器升温装置执行。
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9.发明授权公开(公告)号：US07685812B2
公开(公告)日：2010-03-30
申请号：US10537748
申请日：2004-10-04
IPC分类号： F01N3/00
CPC分类号： F02D41/0275 , B01D53/9481 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N2610/03 , F02B37/00 , F02D41/024 , F02D2200/0802 , F02D2200/0806 , Y02A50/2345 , Y02T10/26
摘要： A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.
摘要翻译： 包含贵金属催化剂（46）和NOx吸收剂（47）的NOx储存催化剂（11）布置在排气通道中。 当排气的空燃比为稀时，当催化剂不活动时，储存催化剂冷存储在吸收剂中的排气中的NO 2，并且当催化剂活化时，将热的储存的NO 2储存在吸收剂中。 当催化剂未被活化时，排气中含有的NO2被冷藏在吸收剂中，并且当满足预定的NOx储存催化剂恢复条件（107）时，存储催化剂复原控制（109,115）包括提高NOx储存 催化剂温度达到预定温度以使其活化（109），以恢复NOx吸收剂的冷藏能力。
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10.发明申请EXHAUST PURIFICATION DEVICE OF COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE 审中-公开压缩点火型内燃机的排气净化装置公开(公告)号：US20100037596A1
公开(公告)日：2010-02-18
申请号：US12312785
申请日：2008-03-18
申请人： Shunsuke Toshioka , Tomihisa Oda , Takekazu Itoh , Kazuhiro Itoh , Yutaka Tanai
发明人： Shunsuke Toshioka , Tomihisa Oda , Takekazu Itoh , Kazuhiro Itoh , Yutaka Tanai
CPC分类号： F01N3/0814 , B01D53/9418 , B01D53/9477 , B01D53/9495 , B01D53/96 , B01D2251/2067 , B01D2251/21 , B01D2255/1021 , B01D2255/20738 , B01D2255/50 , B01D2258/012 , F01N3/106 , F01N3/2033 , F01N3/2066 , F01N9/00 , F01N13/009 , F01N2560/06 , F01N2560/14 , F01N2610/02 , F01N2610/03 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： In an internal combustion engine, an NOx selective reducing catalyst (15) is arranged in an engine exhaust passage and an oxidation catalyst (12) is arranged in the engine exhaust passage upstream of the NOx selective reducing catalyst (15). At the time of engine startup, HC is fed from a HC feed valve (28) to the oxidation catalyst (12), thereby raising the temperature of the NOx selective reducing catalyst(15) by the heat of the oxidation reaction of HC. At this time, the temperature of the NOx selective reducing catalyst (15) is raised to a HC desorption range where HC is desorbed from the NOx selective reducing catalyst (15).
摘要翻译： 在内燃机中，在发动机排气通路上配置有NOx选择还原催化剂（15），氧化催化剂（12）配置在NOx选择还原催化剂（15）上游的发动机排气通路内。 在发动机启动时，HC从HC供给阀（28）供给到氧化催化剂（12），由此HC的氧化反应的热量使NO x选择还原催化剂（15）的温度上升。 此时，NOx选择还原催化剂（15）的温度上升到HC从NOx选择还原催化剂（15）中解吸的HC解吸附范围。
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