-
公开(公告)号：EP2730759A1
公开(公告)日：2014-05-14
申请号：EP11869009.8
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： 本发明的目的是在设置尿素添加单元和选择还原型NOx催化剂（NOx催化剂）的构造中，抑制PM传感器的劣化和PM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）从上游侧依次配置在过滤器（3）的下游侧 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。
-
62.发明授权
公开(公告)号：EP2143901B8
公开(公告)日：2013-07-24
申请号：EP08740311.9
申请日：2008-04-07
CPC分类号： F01N3/206 , B01D53/30 , B01D53/9409 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D2251/2067 , B01D2258/012 , F01N3/2066 , F01N11/00 , F01N13/009 , F01N2560/026 , F01N2570/145 , F01N2610/02 , F01N2900/1616 , Y02A50/2344 , Y02C20/10 , Y02T10/24 , Y02T10/47
摘要： An object of the invention is to estimate the quantity of N 2 O produced in an ammonia oxidation catalyst in a case where the ammonia oxidation catalyst is provided in an exhaust passage of an internal combustion engine. In a case where an ammonia oxidation catalyst 14 having the function of oxidizing ammonia is provided in an exhaust passage 6 of an internal combustion engine 1, the quantity of N 2 O produced in the ammonia oxidation catalyst 14 is estimated based on the difference between a measurement value of an upstream NOx sensor 17 provided in the exhaust passage 6 upstream of the ammonia oxidation catalyst 14 and a measurement value of a downstream NOx sensor 18 provided in the exhaust passage downstream of the ammonia oxidation catalyst 14.
-
63.发明公开
公开(公告)号：EP2591216A1
公开(公告)日：2013-05-15
申请号：EP11749906.1
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.
-
公开(公告)号：EP2570625A1
公开(公告)日：2013-03-20
申请号：EP10851394.6
申请日：2010-05-12
IPC分类号： F01N3/08
CPC分类号： F01N3/208 , B01D53/90 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , F01N3/2033 , F01N13/009 , F01N2560/06 , F01N2610/02 , F01N2610/03 , F01N2900/0416 , F01N2900/1602 , Y02T10/24 , Y02T10/26
摘要： An object of the present invention is to increase the flexibility in the layout of an exhaust gas purification system for an internal combustion engine including selective catalytic reduction catalyst provided in an exhaust passage of the internal combustion engine and an addition device for supplying reducing agent derived from ammonia to the selective catalytic reduction catalyst, without a deterioration of the performance in reducing nitrogen oxides. To achieve the object, the exhaust gas purification system for an internal combustion engine according to the present invention is configured to supply hydrocarbon at the same time when reducing agent derived from ammonia is supplied to the selective catalytic reduction catalyst, thereby producing reducing agent that is hard to be oxidized by a precious metal catalyst.
摘要翻译： 本发明的目的在于提高内燃机的废气净化系统的布局的灵活性，所述内燃机包括设置在内燃机的排气通路中的选择性催化还原催化剂和用于供给来自 氨转化为选择性催化还原催化剂，而不降低氮氧化物还原性能。 为实现上述目的，本发明的内燃机的排气净化系统构成为，在将来自氨的还原剂供给至选择还原型催化剂的同时供给烃，从而生成还原剂 不易被贵金属催化剂氧化。
-
65.发明授权
公开(公告)号：EP2123875B1
公开(公告)日：2012-04-25
申请号：EP08722814.4
申请日：2008-03-18
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, a NOx selective reduction catalyst (15) is disposed in an engine exhaust passageway, and an oxidation catalyst (12) is disposed in the engine exhaust passageway upstream of the NOx selective reduction catalyst (15). At the starting of the engine, HC is fed to the oxidation catalyst (12) from a HC supply valve (28) and by the resultant oxidation reaction heat of HC, the NOx selective reduction catalyst (15) is heated. In this stage, the temperature of the NOx selective reduction catalyst (15) is raised to that falling in the HC desorption temperature range in which HC is desorbed from the NOx selective reduction catalyst (15).
-
公开(公告)号：EP2431584A1
公开(公告)日：2012-03-21
申请号：EP09844350.0
申请日：2009-05-07
IPC分类号： F01N3/08
CPC分类号： F01N3/208 , F01N3/105 , F01N3/108 , F01N2610/02 , F01N2900/1402 , F01N2900/1616 , F01N2900/1622 , Y02T10/24
摘要： In an exhaust purification system of an internal combustion, comprising a NO X catalyst device which has a reducing material holding ability to hold reducing material and can reduce NO X by using of reducing material, a first control, in which an amount of reducing material of the equivalence ratio over 1 for an amount of NO X in the exhaust gas flowing into the NO X catalyst device is supplied to the NO X catalyst device until the reducing material holding ability holds a preset target amount of reducing material, is carried out and a second control, in which in spite of an amount of reducing material held by the reducing material holding ability, an amount of reducing material of the equivalence ratio of a predetermined value for an amount of NO X in the exhaust gas flowing into the NO X catalyst device is supplied to the NO X catalyst device, is carried out from when the first control has been carried out to when the next first control will be carried out.
摘要翻译： 1.一种内燃机的排气净化装置，其特征在于，具有NOX催化剂装置，该NOX催化剂装置具有保持还原性物质的还原性物质保持能力，并且能够利用还原性材料还原NOX，其中，还原剂量相当于 将流入NOx催化剂装置的排气中的NOX量的比率大于1供给到NOX催化剂装置，直到还原性物质保持能力保持预设的目标量的还原性物质为止，进行第二控制，其中， 尽管通过还原材料保持能力保持还原材料的量，但是对于流入NOX催化剂装置的排气中的NOX量的预定值的当量比的还原材料的量被供应给NOX催化剂 装置从执行第一次控制到执行下一次第一次控制时执行。
-
公开(公告)号：EP2133524B1
公开(公告)日：2012-01-11
申请号：EP08738964.9
申请日：2008-03-19
CPC分类号： F01N3/208 , B01D53/9409 , B01D53/9495 , B01D2251/2067 , F01N3/106 , F01N13/009 , F01N2560/021 , F01N2560/026 , F01N2570/18 , F01N2610/02 , F01N2610/146 , F01N2900/0412 , F01N2900/1402 , F01N2900/1622 , F02B37/00 , F02D41/123 , Y02T10/24
摘要： In an internal combustion engine, an NOx selective reduction catalyst (15) is disposed within an engine exhaust gas passage. Urea is supplied to the NOx selective reduction catalyst (15), and ammonia produced from the urea is adsorbed onto the NOx selective reduction catalyst (15). NOx contained in an exhaust gas is selectively reduced mainly by the adsorbed ammonia. An NOx sensor (29), which can detect NOx and ammonia contained in the exhaust gas, is disposed within the engine exhaust gas passage located downstream of the NOx selective reduction catalyst (15). Whether or notthe amount of ammonia adsorbed on the NOx selective reduction catalyst (15) is saturated is determined based on the value detected by the NOx sensor (29) during the stop of the supply of a fuel into the engine in reduced speed operation.
-
68.发明公开EXHAUST GAS PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINES 有权ABGASREINIGUNGSVORRICHTUNGFÜRVERBRENNUNGSMOTOREN
公开(公告)号：EP2388450A1
公开(公告)日：2011-11-23
申请号：EP09838277.3
申请日：2009-01-13
CPC分类号： F01N3/208 , B01D53/9418 , B01D53/9495 , B01D2251/2067 , B01D2258/012 , F01N3/103 , F01N13/009 , F01N2560/026 , F01N2610/02 , F01N2900/0412 , F01N2900/0421 , F01N2900/0422 , F01N2900/1402 , F02M26/38 , Y02T10/121 , Y02T10/24
摘要： An exhaust purifying device for an internal combustion engine which can restrict an influence of a measurement error in a NOx sensor provided at the downstream side of a catalyst and can optimally maintain a NOx purifying rate. The device comprises a catalytic converter (70) carrying a selective catalytic reduction catalyst provided in an exhaust passage (10) of the engine (1) to selectively reduce nitrogen oxides, a urea water adding valve (60) for adding urea water to the catalyst as a reducing agent, a NOx sensor (80) provided at the downstream side of the catalyst, and an ECU (100) for adjusting an addition amount of the urea water adding valve (60) based upon output of the NOx sensor (80), wherein a urea water addition amount adjusting process is executed under a condition that a NOx amount to be generated in the engine increases.
摘要翻译： 一种用于内燃机的排气净化装置，其可以限制设置在催化剂下游侧的NOx传感器中的测量误差的影响，并且可以最佳地维持NOx净化率。 所述装置包括：催化转化器（70），其承载设置在所述发动机（1）的排气通道（10）中以选择性地还原氮氧化物的选择性催化还原催化剂;尿素水添加阀（60），用于向所述催化剂添加尿素水 作为还原剂，设置在催化剂下游侧的NOx传感器（80）和用于基于NOx传感器（80）的输出调节尿素水添加阀（60）的添加量的ECU（100） 其中在发动机中产生的NOx量增加的条件下执行尿素水添加量调节处理。
-
公开(公告)号：EP1148215B1
公开(公告)日：2011-06-29
申请号：EP99959861.8
申请日：1999-12-16
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.
-
公开(公告)号：EP2239431A1
公开(公告)日：2010-10-13
申请号：EP08868704.1
申请日：2008-12-26
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 NO x 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 NO x selective reducing catalyst (15) to selectively reduce the NO x . 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 NO x 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： 在发动机排气通路内配置有选择还原型NOx催化剂（15）的内燃机，将储存在尿素水箱（20）中的尿素水供给到选择还原型NOx催化剂（15），选择性地还原 氮氧化物。 尿素水箱（20）包括配置在主水箱（20a）内的主水箱（20a）和副水箱（20b）。 副罐（20b）中的尿素水被送到尿素水供给阀（17）。 当尿素水箱（20）应重新装满尿素水时，副水箱（20b）用尿素水溶液重新装满。 如果尿素水箱（20）中的尿素水被重新填充，则由水位传感器（40）检测。 当在尿素水箱（20）中的尿素水被重新填充之后刚好在发动机运行时判定NOx净化率降到允许水平以下时，判定再填充的尿素水溶液是异常的。
-
-
-
-
-
-
-
-
-
搜索结果
72 条记录 (耗时 0.024 秒)
