公开(公告)号：US20180266291A1

公开(公告)日：2018-09-20

申请号：US15884959

申请日：2018-01-31

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yuki SUZUKI ,  Tomihisa TSUCHIYA

IPC分类号： F01N3/10 ,  F01N3/20 ,  F01N3/08 ,  F01N3/035

CPC分类号： F01N3/103 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/208 ,  F01N9/00 ,  F01N2610/03 ,  F01N2900/1602 ,  F01N2900/1612 ,  Y02T10/22 ,  Y02T10/47

摘要： A controller alternately repeats a desorption process of desorbing sulfur compound deposited on an NSR catalyst by supplying fuel from a direct injection valve to exhaust gas, and a pausing process of pausing fuel supply from the injection valve to the exhaust gas. The controller executes a cooling fuel addition for adding engine fuel from the addition valve of the exhaust passage to cool the addition valve during execution of the pausing process, and prohibit the cooling fuel addition during execution of the desorption process. The controller calculates a target temperature of the addition valve at the time of start of the desorption process such that the temperature of the addition valve during execution of the desorption process does not exceed an allowable upper limit temperature and calculates the addition amount at the time of cooling fuel addition.

公开(公告)号：US10036293B2

公开(公告)日：2018-07-31

申请号：US15333827

申请日：2016-10-25

申请人： HYUNDAI MOTOR COMPANY

发明人： Jun Sung Park

IPC分类号： F01N13/00 ,  F01N3/08 ,  F01N3/20 ,  B01D53/94

CPC分类号： F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D2255/2042 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/904 ,  F01N3/021 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N3/2066 ,  F01N13/0093 ,  Y02T10/24

摘要： An apparatus for purifying an exhaust gas includes an engine, an exhaust pipe, a first lean NOx trap (LNT) adapted to absorb nitrogen oxide (NOx) contained in the exhaust gas, to release the absorbed NOx, and to reduce the NOx contained in the exhaust gas or the released NOx or to generate ammonia (NH3), a second LNT adapted to absorb the NOx, to release the absorbed NOx, and to reduce the NOx contained in the exhaust gas or the released NOx or to generate the NH3, and a selective catalytic reduction (SCR) catalyst adapted to temporarily absorb the NH3 and to reduce the NOx contained in the exhaust gas, wherein the second LNT is positioned such that an average temperature of the second LNT is lower than that of the first LNT by 50-150° C. based on an average temperature of the exhaust gas.

公开(公告)号：US09057299B2

公开(公告)日：2015-06-16

申请号：US14126997

申请日：2012-06-29

申请人： Hiroshi Otsuki ,  Shigeki Nakayama ,  Hiromasa Nishioka ,  Katsuhiko Oshikawa ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Yuichi Sobue ,  Daichi Imai ,  Kou Sugawara

发明人： Hiroshi Otsuki ,  Shigeki Nakayama ,  Hiromasa Nishioka ,  Katsuhiko Oshikawa ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Yuichi Sobue ,  Daichi Imai ,  Kou Sugawara

IPC分类号： B01D50/00 ,  B01D39/00 ,  B01D41/00 ,  B01D45/00 ,  B01D49/00 ,  B01D51/00 ,  F01N3/023 ,  B01D46/24 ,  B01D46/00 ,  F01N3/022 ,  F01N3/035 ,  F01N3/021 ,  B01D46/32 ,  B01D53/64 ,  F01N3/08 ,  B01D53/82 ,  F01N3/00

CPC分类号： F01N3/023 ,  B01D41/00 ,  B01D46/00 ,  B01D46/006 ,  B01D46/0061 ,  B01D46/2418 ,  B01D46/32 ,  B01D53/64 ,  B01D53/82 ,  B01D2257/302 ,  B01D2259/40083 ,  B01D2279/30 ,  F01N3/00 ,  F01N3/021 ,  F01N3/022 ,  F01N3/0222 ,  F01N3/0232 ,  F01N3/035 ,  F01N3/085

摘要： A wall flow type particulate filter is arranged inside the exhaust passage of an internal combustion engine where combustion is performed under an excess of oxygen. The particulate filter carries an ash atomization agent. To remove the ash from the particulate filter, ash atomization processing for rendering the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature is temporarily performed.

摘要翻译： 壁流式微粒过滤器布置在内燃机的排气通道内部，其中在过量的氧气下进行燃烧。 颗粒过滤器带有灰雾化剂。 为了从颗粒过滤器除去灰分，临时进行用于使微粒过滤器的状态为灰尘雾化处理的状态，其中流入颗粒过滤器的废气的浓度降低，并且微粒过滤器的温度升高。

公开(公告)号：US09010093B2

公开(公告)日：2015-04-21

申请号：US14237239

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

IPC分类号： F01N3/00 ,  F01N3/18 ,  F01N3/08 ,  F01N3/20 ,  F01N13/00 ,  F01N3/10

CPC分类号： F01N3/18 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2073 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/24 ,  F01N2610/02 ,  F02D41/024 ,  F02D41/028 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/26

摘要： In cases where at the upstream side of an NOx selective reduction catalyst there is provided another catalyst, sulfur poisoning of both the catalysts is recovered in an appropriate manner. To this end, provision is made for an NH3 generation catalyst arranged in an exhaust passage of an internal combustion engine for generating NH3, the NOx selective reduction catalyst arranged in the exhaust passage at a location downstream of the NH3 generation catalyst for reducing NOx in a selective manner, an upstream side recovery unit to recover sulfur poisoning of the NH3 generation catalyst, and a downstream side recovery unit to recover sulfur poisoning of the NOx selective reduction catalyst after the sulfur poisoning of the NH3 generation catalyst has been recovered by the upstream side recovery unit.

摘要翻译： 在NOx选择还原催化剂的上游侧设置有另一种催化剂的情况下，以适当的方式回收两种催化剂的硫中毒。 为此，提供了排列在用于产生NH 3的内燃机的排气通道中的NH 3代催化剂，该NOx选择还原催化剂在NH 3代催化剂的下游位置排列在排气通道中，用于还原NOx 选择性地，用于回收NH 3代催化剂的硫中毒的上游侧回收单元，以及在NH 3代催化剂的硫中毒已经被上游侧回收了用于回收NOx选择还原催化剂的硫中毒的下游侧回收单元 恢复单位。

公开(公告)号：US20140109767A1

公开(公告)日：2014-04-24

申请号：US14110811

申请日：2012-06-29

申请人： Hiroshi Otsuki ,  Shigeki Nakayama ,  Hiromasa Nishioka ,  Katsuhiko Oshikawa ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Yuichi Sobue ,  Daichi Imai ,  Kou Sugawara

发明人： Hiroshi Otsuki ,  Shigeki Nakayama ,  Hiromasa Nishioka ,  Katsuhiko Oshikawa ,  Yoshihisa Tsukamoto ,  Junichi Matsuo ,  Yuichi Sobue ,  Daichi Imai ,  Kou Sugawara

IPC分类号： B01D46/00

CPC分类号： F01N3/023 ,  B01D41/00 ,  B01D46/00 ,  B01D46/006 ,  B01D46/0061 ,  B01D46/2418 ,  B01D46/32 ,  B01D53/64 ,  B01D53/82 ,  B01D2257/302 ,  B01D2259/40083 ,  B01D2279/30 ,  F01N3/00 ,  F01N3/021 ,  F01N3/022 ,  F01N3/0222 ,  F01N3/0232 ,  F01N3/035 ,  F01N3/085

摘要： A method of removing ash from a wall flow type particulate filter which is arranged in an exhaust passage of an internal combustion engine in which combustion is performed in an excess of oxygen for trapping particulate matter in exhaust gas, using a solid acid which is carried on the particulate filter, renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature, and then renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter in an oxidizing atmosphere contains SOx.

摘要翻译： 一种从壁流型微粒过滤器除去灰尘的方法，该过滤器布置在内燃机的排气通道中，其中在过量的氧气中进行燃烧以在废气中捕集颗粒物质，使用载体上的固体酸 颗粒过滤器使颗粒过滤器的状态为流入颗粒过滤器的废气在氧气浓度降低并且颗粒过滤器升温的状态，然后使微粒过滤器的状态呈现状态， 在氧化气氛中流入微粒过滤器的废气含有SOx。

公开(公告)号：US20140075920A1

公开(公告)日：2014-03-20

申请号：US13623323

申请日：2012-09-20

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： Satoru Sugita

IPC分类号： F01N3/08

CPC分类号： F01N3/085 ,  B01D53/346 ,  B01D53/501 ,  B01D53/508 ,  B01D53/83 ,  B01D2258/0283 ,  F23J15/003 ,  F23J15/02 ,  F23J15/06 ,  F23J2215/20 ,  F23J2219/40 ,  Y02E20/363 ,  Y02P80/152

摘要： A method for treating exhaust gas is provided, which includes measuring SO3 concentration in the exhaust gas which contains at least SO2 and SO3 by using an SO3 gas analyzer; injecting fine particles into the exhaust gas after the step of measuring; cooling the exhaust gas after the step of injection, by recovering heat from the exhaust gas; collecting fly ash from the cooled exhaust gas; and removing at least SO2 from the exhaust gas after the step of collecting by absorbing the SO2 with an absorbing solution. In addition, an apparatus for treating exhaust gas is provided, which includes an SO3 gas analyzer; a fine particles injector; a heat exchanger; an electrostatic precipitator; an absorption tower; and a fine particle feed controller.

摘要翻译： 提供了一种处理废气的方法，其包括通过使用SO 3气体分析仪测量至少包含SO 2和SO 3的废气中的SO 3浓度; 在测量步骤后将细颗粒注入废气中; 在注射步骤之后，通过从废气中回收热量来冷却废气; 从冷却的废气中收集飞灰; 以及在通过吸收溶液吸收SO 2的收集步骤之后从废气中除去至少SO 2。 另外，提供了一种处理废气的装置，其包括SO 3气体分析器; 细颗粒注射器; 热交换器; 静电除尘器; 吸收塔 和微粒进料控制器。

公开(公告)号：US08650863B2

公开(公告)日：2014-02-18

申请号：US12677249

申请日：2009-03-31

申请人： Yuichi Sobue ,  Kohei Yoshida ,  Hiroshi Otsuki ,  Masahide Iida ,  Itsuya Kurisaka ,  Ko Sugawara

发明人： Yuichi Sobue ,  Kohei Yoshida ,  Hiroshi Otsuki ,  Masahide Iida ,  Itsuya Kurisaka ,  Ko Sugawara

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N2570/04 ,  F01N2900/1612 ,  F02D41/028 ,  F02D41/1446 ,  F02D2200/0818

摘要： The present invention is intended to improve a SOx reduction rate which is a ratio of an amount of SOx reduction with respect to an amount of SOx occlusion in SOx poisoning recovery processing. In the present invention, in the SOx poisoning recovery processing in which the SOx occluded in an NOx storage reduction catalyst is reduced by decreasing the air fuel ratio of an exhaust gas flowing into the NOx storage reduction catalyst to a predetermined air fuel ratio in a repeated manner, the length of a period in which the air fuel ratio of an exhaust gas flowing into the NOx storage reduction catalyst is decreased is made longer in a relatively early time during the processing than in a relatively late time during the processing.

摘要翻译： 本发明旨在提高SOx还原速率，SOx还原速率是SOx中毒恢复处理中SO x还原量相对于SOx吸收量的比例。 在本发明中，在通过将流入NOx吸留还原催化剂的废气的空燃比减少到规定的空燃比来减少NOx吸留还原催化剂中的SO x的SOx中毒恢复处理中， 在处理期间相对较早的时间内，流入NOx储存还原催化剂的排气的空燃比减少的时间段的长度比处理期间相对较晚的时间长。

公开(公告)号：US20130287638A1

公开(公告)日：2013-10-31

申请号：US13977225

申请日：2011-02-28

申请人： Kou Sugawara ,  Shigeki Nakayama ,  Yuichi Sobue ,  Hiromasa Nishioka ,  Daichi Imai

发明人： Kou Sugawara ,  Shigeki Nakayama ,  Yuichi Sobue ,  Hiromasa Nishioka ,  Daichi Imai

IPC分类号： F01N3/08

CPC分类号： F01N3/085 ,  F01N3/033 ,  F01N3/0807 ,  F01N3/106 ,  F01N13/009 ,  Y02T10/20

摘要： This exhaust gas purification device for an internal combustion engine is provided with a particulate filter disposed in an engine exhaust system, and a catalytic device disposed downstream of the particulate filter in the engine exhaust system. The catalytic device holds sulfuric acid as a sulfate and releases the product as SO2.

摘要翻译： 这种内燃机用废气净化装置具有设置在发动机排气系统中的微粒过滤器和设置在发动机排气系统中的微粒过滤器下游的催化装置。 催化装置保持硫酸为硫酸盐，并将产物作为SO 2释放。

公开(公告)号：US08323579B2

公开(公告)日：2012-12-04

申请号：US12599815

申请日：2008-05-13

申请人： Yoshitsugu Ogura ,  Takayuki Endo

发明人： Yoshitsugu Ogura ,  Takayuki Endo

IPC分类号： B01D50/00

CPC分类号： B01J23/58 ,  B01D53/9422 ,  B01D53/949 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/2022 ,  B01D2255/2042 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2257/302 ,  B01J35/0006 ,  B01J37/0242 ,  F01N3/0814 ,  F01N3/085 ,  F01N13/0097 ,  F01N2510/067 ,  F01N2510/0682 ,  F01N2570/04

摘要： An S storage catalyst 2 is equipped with a catalytic supporter, a catalytic metal being supported on this catalytic supporter and oxidizing SO2 to SO3, and an S storage material being supported on the catalytic supporter and storing S components therein. This S storage catalyst 2 has an exhaust-gas-inlet-side high-concentration portion 2A in which the S storage material is supported on the catalytic supporter in a high concentration, and an exhaust-gas-outlet-side low-concentration portion 2A in which the S storage material is supported on the catalytic supporter in a low concentration that is lower than that of the high-concentration portion. In accordance with this S storage catalyst 2, it is possible to maintain the S storing performance favorably, even in a case where exhaust-gas temperatures are low, while keeping the material cost from rising steeply.

摘要翻译： S储存催化剂2配备有催化剂载体，催化金属负载在该催化剂载体上并将SO 2氧化成SO 3，S载体负载在催化剂载体上并储存S组分。 该S吸留催化剂2具有排气入口侧高浓度部2A，其中S储存材料以高浓度负载在催化剂载体上，排气 - 出口侧低浓度部分2A 其中S储存材料以低于高浓度部分的低浓度负载在催化剂载体上。 根据该S吸留催化剂2，即使在废气温度低的情况下，同时保持材料成本急剧上升，也可以良好地保持S储存性能。

公开(公告)号：US08276369B2

公开(公告)日：2012-10-02

申请号：US12599212

申请日：2008-07-11

申请人： Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiroshi Otsuki

发明人： Hiromasa Nishioka ,  Shinya Hirota ,  Kotaro Hayashi ,  Takamitsu Asanuma ,  Kohei Yoshida ,  Hiroshi Otsuki

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N3/02

CPC分类号： F01N3/0814 ,  B01D46/006 ,  B01D46/42 ,  B01D53/9422 ,  B01D53/9477 ,  B01D53/949 ,  B01D2255/915 ,  B01D2257/302 ,  B01D2279/30 ,  F01N3/0253 ,  F01N3/0807 ,  F01N3/085 ,  F01N3/0885 ,  F01N13/009 ,  F01N2250/14 ,  F01N2570/04 ,  F01N2610/03

摘要： In the present exhaust purification system of an internal combustion engine, a particulate filter is arranged downstream of an NOx storage/reduction catalyst device and an S trap device is arranged upstream of the NOx storage/reduction catalyst device. A first fuel supplying device for supplying additional fuel for regeneration of the particulate filter to the exhaust system upstream of the S trap device or into the cylinder is provided. An amount of the additional fuel supplied by the first fuel supplying device is controlled to make the S trap device not release SOx. A second fuel supplying device is provided in the exhaust system between the NOx storage/reduction catalyst device and the particulate filter to make up for a deficiency of the additional fuel supplied by the first fuel supplying device in the regeneration treatment of the particulate filter.

摘要翻译： 在本发明的内燃机的排气净化系统中，在NOx吸留还原催化剂装置的下游配置微粒过滤器，在NOx吸留还原催化剂装置的上游配置有S阱装置。 提供了一种第一燃料供给装置，用于向颗粒过滤器再生的附加燃料供给到S捕集装置或气缸上游的排气系统。 控制由第一燃料供给装置供给的附加燃料的量，以使S捕集装置不释放SOx。 第二燃料供给装置设置在NOx储存还原催化剂装置和微粒过滤器之间的排气系统中，以弥补由微粒过滤器的再生处理中由第一燃料供应装置供应的附加燃料的不足。