公开(公告)号：US09822683B2

公开(公告)日：2017-11-21

申请号：US14443214

申请日：2012-11-16

申请人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Hiroshi Otsuki ,  Junichi Matsuo ,  Keishi Takada ,  Ichiro Yamamoto

发明人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Hiroshi Otsuki ,  Junichi Matsuo ,  Keishi Takada ,  Ichiro Yamamoto

IPC分类号： F01N3/00 ,  F01N3/025 ,  F01N3/10 ,  F01N3/20 ,  F02D41/02 ,  F01N9/00 ,  F02D41/40 ,  F01N3/023 ,  F01N3/035 ,  F01N13/00 ,  B01D53/04 ,  F01N3/021 ,  F01N3/029 ,  F01N3/28 ,  B01D53/94

CPC分类号： F01N3/0253 ,  B01D53/0415 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2255/1021 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2257/406 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/0231 ,  F01N3/0293 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/2882 ,  F01N9/002 ,  F01N13/009 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1622 ,  F02D41/029 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2200/0812 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

摘要： An exhaust gas purification system for an internal combustion engine is provided with a filter including a selective catalytic reduction NOx catalyst carried thereon. Further, a post-catalyst is provided for an exhaust gas passage disposed on a downstream side from the filter. The post-catalyst has an oxidizing function, and the post-catalyst has such a function that the production of N2 based on the oxidation of ammonia is facilitated in a predetermined first temperature area. A filter regeneration process execution unit is programmed to control the temperature of the post-catalyst to be in the first temperature area while adjusting the temperature of the filter to be in a predetermined second temperature area lower than a filter regeneration temperature during a certain period of time.

公开(公告)号：US20150290587A1

公开(公告)日：2015-10-15

申请号：US14443179

申请日：2012-11-16

申请人： Akira MIKAMI ,  Shigeki NAKAYAMA ,  Nobumoto OHASHI ,  Keishi TAKADA ,  Kenji SAKURAI ,  Yoshihisa TUKAMOTO ,  Hiroshi OTSUKI ,  Junichi MATSUO ,  Ichiro YAMAMOTO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Akira Mikami ,  Shigeki Nakayama ,  Nobumoto Ohashi ,  Keishi Takada ,  Kenji Sakurai ,  Yoshihisa Tsukamoto ,  Hiroshi Otsuki ,  Junichi Matsuo ,  Ichiro Yamamoto

IPC分类号： B01D53/94 ,  F01N3/10 ,  F01N3/08 ,  F01N13/00 ,  F01N3/021

CPC分类号： B01D53/9477 ,  B01D53/0415 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9463 ,  B01D53/9468 ,  B01D2251/2062 ,  B01D2255/1021 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2257/406 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0828 ,  F01N3/103 ,  F01N3/106 ,  F01N3/108 ,  F01N3/2066 ,  F01N13/009 ,  F01N13/0097 ,  F01N2510/063 ,  F01N2510/0684 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/18 ,  F01N2610/02 ,  Y02T10/24

摘要： An object of the present invention is to appropriately remove, from an exhaust gas, HC, CO, and ammonia flowing out from a filter (SCRF) on which an SCR catalyst is carried. In the present invention, a post-catalyst 8 is provided for an exhaust gas passage of an internal combustion engine on a downstream side from SCRF along with a flow of the exhaust gas. The post-catalyst 8 is constructed to include an adsorption reduction part 81c which adsorbs ammonia and which reduces NOx by using ammonia as a reducing agent, a first oxidation part 81b which oxidizes ammonia, and a second oxidation part 82 which oxidizes HO and CO.

摘要翻译： 本发明的目的是从排出气体中适当地除去从其上载有SCR催化剂的过滤器（SCRF）流出的HC，CO和氨。 在本发明中，为了将内燃机的排气通路与SCRF的下游侧连同废气流一起设置有后催化剂8。 后催化剂8被构造为包括吸附氨并通过使用氨作为还原剂而还原NOx的吸附还原部分81c，氧化氨的第一氧化部分81b和氧化HO和CO的第二氧化部分82。

公开(公告)号：US20150192047A1

公开(公告)日：2015-07-09

申请号：US14409743

申请日：2012-06-20

申请人： Shunsuke Toshioka ,  Keishi Takada ,  Shigeki Nakayama ,  Junya Nakajima ,  Ichiro Yamamoto

发明人： Shunsuke Toshioka ,  Keishi Takada ,  Shigeki Nakayama ,  Junya Nakajima ,  Ichiro Yamamoto

IPC分类号： F01N3/08 ,  F01N3/20 ,  B01D53/94

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。

公开(公告)号：US20150184569A1

公开(公告)日：2015-07-02

申请号：US14409652

申请日：2012-06-20

申请人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

发明人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

IPC分类号： F01N3/20 ,  B01D53/94

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。

公开(公告)号：US20150330275A1

公开(公告)日：2015-11-19

申请号：US14655586

申请日：2012-12-26

申请人： Akira MIKAMI ,  Shigeki NAKAYAMA ,  Keishi TAKADA ,  Kenji SAKURAI ,  Yoshihisa TUKAMOTO ,  Hiroshi OTSUKI ,  Junichi MATSUO ,  Ichiro YAMAMOTO ,  Nobumoto OHASHI

发明人： Akira MIKAMI ,  Shigeki NAKAYAMA ,  Nobumoto OHASHI ,  Keishi TAKADA ,  Kenji SAKURAI ,  Yoshihisa TSUKAMOTO ,  Hiroshi OTSUKI ,  Junichi MATSUO ,  Ichiro YAMAMOTO

IPC分类号： F01N3/025 ,  F01N3/035 ,  F01N3/20 ,  F01N9/00

CPC分类号： F01N3/0253 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/002 ,  F01N13/009 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/03 ,  F02D41/0245 ,  F02D41/029 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： An object of the present invention is to suppress a reduction in a NOx purification ratio accompanying filter regeneration processing in an exhaust gas purification system for an internal combustion engine that includes a filter carrying an SCR catalyst. In the present invention, the temperature of the filter is increased following completion of the filter regeneration processing by increasing the temperature of exhaust gas discharged from the internal combustion engine, and in so doing, HC adhered to the filter is removed.

摘要翻译： 本发明的目的在于，抑制伴随过滤器再生处理的NOx净化率的降低，该排气净化系统包括具有SCR催化剂的过滤器的内燃机。 在本发明中，通过增加从内燃机排出的废气的温度，在过滤器再生处理完成之后，过滤器的温度上升，从而除去附着在过滤器上的HC。

公开(公告)号：US08161737B2

公开(公告)日：2012-04-24

申请号：US12770029

申请日：2010-04-29

申请人： Isamu Kanaya ,  Takayuki Adachi ,  Nobuhiko Masaki ,  Kiminobu Hirata ,  Jin Kusaka ,  Keishi Takada ,  Takeshi Mende ,  Fumiyuki Tsurumi

发明人： Isamu Kanaya ,  Takayuki Adachi ,  Nobuhiko Masaki ,  Kiminobu Hirata ,  Jin Kusaka ,  Keishi Takada ,  Takeshi Mende ,  Fumiyuki Tsurumi

IPC分类号： F01N3/00

CPC分类号： F01N3/0231 ,  B01D46/0061 ,  B01D46/448 ,  B01D46/46 ,  B01D2279/30 ,  F01N9/002 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2900/1606 ,  F02D41/1467 ,  F02D2200/0812 ,  Y02T10/47

摘要： An exhaust gas pressure P, exhaust gas temperatures TU and TD on upstream and downstream of a DPF, a rotation speed Ne, a load Q, and an intake flow rate F as various operating conditions are read, and an amount of PM generated for short time Δt is obtained to be added to a PM deposited amount m, and thus, to obtain an initial deposited amount. Exhaust gas properties and a space velocity SV are obtained based on various operating conditions, and the PM deposited amount m after a lapse of the short time Δt is estimated from a PM deposited amount estimation equation “m=m·exp(−B·Δt)” having been derived considering the exhaust gas properties and the space velocity SV. When the PM deposited amount m is equal to or more than a predetermined value, a forced regeneration processing in the DPF is executed, and thereafter, the PM deposited amount m is reset to 0.

摘要翻译： 读取DPF的上游和下游的排气压力P，排气温度TU和TD，作为各种操作条件的转速Ne，负载Q和进气流量F，并且生成短的PM量 时间＆Dgr; t被添加到PM沉积量m，从而获得初始沉积量。 根据各种运行条件获得废气特性和空速SV，通过PM沉积量估计方程“m = m·exp（-B）”估算经过短时间Dgr之后的PM沉积量m ·＆Dgr; t）“，考虑到废气特性和空间速度SV。 当PM沉积量m等于或大于预定值时，执行DPF中的强制再生处理，此后将PM沉积量m重置为0。

公开(公告)号：US20100269490A1

公开(公告)日：2010-10-28

申请号：US12770029

申请日：2010-04-29

申请人： Isamu KANAYA ,  Takayuki Adachi ,  Nobuhiko Masaki ,  Kiminobu Hirata ,  Jin Kusaka ,  Keishi Takada ,  Takeshi Mende ,  Fumiyuki Tsurumi

发明人： Isamu KANAYA ,  Takayuki Adachi ,  Nobuhiko Masaki ,  Kiminobu Hirata ,  Jin Kusaka ,  Keishi Takada ,  Takeshi Mende ,  Fumiyuki Tsurumi

IPC分类号： F01N9/00 ,  F01N3/023

CPC分类号： F01N3/0231 ,  B01D46/0061 ,  B01D46/448 ,  B01D46/46 ,  B01D2279/30 ,  F01N9/002 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2900/1606 ,  F02D41/1467 ,  F02D2200/0812 ,  Y02T10/47

摘要： An exhaust gas pressure P, exhaust gas temperatures TU and TD on upstream and downstream of a DPF, a rotation speed Ne, a load Q, and an intake flow rate F as various operating conditions are read, and an amount of PM generated for short time Δt is obtained to be added to a PM deposited amount m, and thus, to obtain an initial deposited amount. Exhaust gas properties and a space velocity SV are obtained based on various operating conditions, and the PM deposited amount m after a lapse of the short time Δt is estimated from a PM deposited amount estimation equation “m=m·exp(−B·Δt)” having been derived considering the exhaust gas properties and the space velocity SV. When the PM deposited amount m is equal to or more than a predetermined value, a forced regeneration processing in the DPF is executed, and thereafter, the PM deposited amount m is reset to 0.

摘要翻译： 读取DPF的上游和下游的排气压力P，排气温度TU和TD，作为各种操作条件的转速Ne，负载Q和进气流量F，并且生成短的PM量 时间＆Dgr; t被添加到PM沉积量m，从而获得初始沉积量。 根据各种运行条件获得废气特性和空速SV，通过PM沉积量估计方程“m = m·exp（-B）”估算经过短时间Dgr t之后的PM沉积量m ·＆Dgr; t）“，考虑到废气特性和空间速度SV。 当PM沉积量m等于或大于预定值时，执行DPF中的强制再生处理，此后将PM沉积量m重置为0。

公开(公告)号：US09482133B2

公开(公告)日：2016-11-01

申请号：US14652830

申请日：2012-12-18

申请人： Keishi Takada ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Junichi Matsuo ,  Yoshihisa Tsukamoto ,  Hiroshi Otsuki ,  Ichiro Yamamoto

发明人： Keishi Takada ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Junichi Matsuo ,  Yoshihisa Tsukamoto ,  Hiroshi Otsuki ,  Ichiro Yamamoto

IPC分类号： F01N3/20 ,  B01D53/94 ,  F01N3/10 ,  F01N9/00 ,  F01N3/025 ,  F01N3/035 ,  F01N13/00

CPC分类号： F01N3/208 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/904 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N9/002 ,  F01N13/009 ,  F01N2510/06 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/08 ,  Y02T10/24 ,  Y02T10/47

摘要： In order to suppress ammonia from flowing out during regeneration treatment of a filter carrying an SCR catalyst, the prevent invention provides an exhaust emission control system of an internal combustion engine, including a first stage catalyst having an oxidation function, a fuel supply device configured to supply fuel to the first stage catalyst, a filter provided in the exhaust passage downstream of the first stage catalyst and carrying a selective redaction type NOx catalyst, an ammonia supply device configured to supply ammonia to the filter, a filter-regeneration-treatment executing unit configured to execute filter regeneration treatment, and a control unit configured to supply, when the filter regeneration treatment is not executed, the ammonia in an amount corresponding to an amount of the NOx emitted from the internal combustion engine, and to supply, when the filter regeneration treatment is executed, the ammonia in an amount corresponding to an amount of the NOx obtained by subtracting, from the amount of the NOx emitted from the internal combustion engine, an amount of the NOx reduced by the fuel which passes through the first stage catalyst.

摘要翻译： 为了在携带SCR催化剂的过滤器的再生处理期间抑制氨流出，本发明提供了一种内燃机的废气排放控制系统，其包括具有氧化功能的第一级催化剂，燃料供应装置构造成 向第一阶段催化剂供给燃料，设置在第一阶段催化剂下游的排气通道中并且携带选择性配位型NOx催化剂的过滤器，被配置为向过滤器供应氨的氨供给装置，过滤器再生处理执行单元 被配置为执行过滤器再生处理，以及控制单元，被配置为当不执行所述过滤器再生处理时，提供与从所述内燃机排放的NOx的量对应的量的氨，并且当所述过滤器 执行再生处理，氨的量对应于所获得的NOx的量 通过从由内燃机排出的NOx的量减去通过第一级催化剂的燃料还原的NOx量。

公开(公告)号：US09464554B2

公开(公告)日：2016-10-11

申请号：US14648727

申请日：2012-12-03

申请人： Junichi Matsuo ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Kenji Sakurai ,  Akira Mikami ,  Keishi Takada ,  Yoshihisa Tsukamoto ,  Hiroshi Otsuki ,  Ichiro Yamamoto

发明人： Junichi Matsuo ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Kenji Sakurai ,  Akira Mikami ,  Keishi Takada ,  Yoshihisa Tsukamoto ,  Hiroshi Otsuki ,  Ichiro Yamamoto

IPC分类号： F01N3/20 ,  F01N9/00 ,  F01N3/035 ,  F01N3/10 ,  F02D41/02 ,  F01N3/025 ,  F01N13/00 ,  F01N11/00

CPC分类号： F01N9/00 ,  F01N3/025 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/002 ,  F01N11/002 ,  F01N13/009 ,  F01N2430/00 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/1404 ,  F01N2900/1602 ,  F02D41/024 ,  F02D41/029 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： In an exhaust gas purification system for an internal combustion engine provided with a filter supporting an SCR catalyst, the present invention is intended to suppress HC and CO from being discharged to the outside at the time of the execution of filter regeneration processing, and to carry out the filter regeneration processing in an efficient manner. In the present invention, a post-catalyst having an oxidation function is arranged in an exhaust passage at the downstream side of the filter. Then, when the temperature of the post-catalyst is lower than a predetermined activation temperature at the time the execution of the filter regeneration processing is requested, the temperature of the post-catalyst is raised by carrying out control of raising the temperature of the exhaust gas discharged from the internal combustion engine, and control increasing the flow rate of the exhaust gas, before the execution of the filter regeneration processing.

摘要翻译： 在具有支撑SCR催化剂的过滤器的内燃机的排气净化系统中，本发明旨在在执行过滤器再生处理时抑制HC和CO被排出到外部，并且携带 以有效的方式进行过滤器再生处理。 在本发明中，具有氧化功能的后催化剂配置在过滤器的下游侧的排气通路中。 然后，当要求执行过滤器再生处理时，当催化剂的温度低于预定活化温度时，通过进行提高排气温度的控制来提高后催化剂的温度 在进行过滤器再生处理之前，从内燃机排出的气体，并且控制增加废气的流量。

公开(公告)号：US20150292378A1

公开(公告)日：2015-10-15

申请号：US14443214

申请日：2012-11-16

申请人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Hiroshi Otsuki ,  Junichi Matsuo ,  Keishi Takada ,  Ichiro Yamamoto

发明人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shigeki Nakayama ,  Akira Mikami ,  Kenji Sakurai ,  Hiroshi Otsuki ,  Junichi Matsuo ,  Keishi Takada ,  Ichiro Yamamoto

IPC分类号： F01N3/025 ,  F01N3/28 ,  F01N3/20 ,  F01N3/029 ,  F01N3/021 ,  F01N3/035

CPC分类号： F01N3/0253 ,  B01D53/0415 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2255/1021 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2257/406 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/0231 ,  F01N3/0293 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/2882 ,  F01N9/002 ,  F01N13/009 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1622 ,  F02D41/029 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2200/0812 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

摘要： An object of the present invention is to suppress HC, CO, and NOx from being discharged to the outside when a filter regeneration process is executed in an exhaust gas purification system for an internal combustion engine provided with a filter including an SCR catalyst carried thereon. In the present invention, a post-catalyst is provided for an exhaust gas passage disposed on a downstream side from the filter. The post-catalyst has an oxidizing function, and the post-catalyst has such a function that the production of N2 based on the oxidation of ammonia is facilitated in a predetermined first temperature area. Further, when the filter regeneration process is executed, the temperature of the post-catalyst is adjusted to be in the first temperature area while adjusting the temperature of the filter to be in a predetermined second temperature area lower than a filter regeneration temperature during a certain period of time.

摘要翻译： 本发明的目的在于，在具有载持有SCR催化剂的过滤器的内燃机的排气净化系统中进行过滤器再生处理时，能够抑制HC，CO，NOx排出到外部。 在本发明中，为从过滤器的下游侧设置的排气通道设置有后催化剂。 后催化剂具有氧化功能，并且后催化剂具有在预定的第一温度区域中促进基于氨的氧化的N 2的产生的功能。 此外，当执行过滤器再生处理时，将催化剂的温度调节到第一温度区域，同时在某一特定过程中将过滤器的温度调节到低于过滤器再生温度的预定的第二温度区域 一段的时间。