公开(公告)号：US06594991B2

公开(公告)日：2003-07-22

申请号：US09817172

申请日：2001-03-27

申请人： Kazuhiro Itoh ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Koichi Kimura ,  Koichiro Nakatani

发明人： Kazuhiro Itoh ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Koichi Kimura ,  Koichiro Nakatani

IPC分类号： F01N300

CPC分类号： B01D46/0067 ,  B01D46/0036 ,  B01D46/0039 ,  B01D46/0041 ,  B01D46/24 ,  B01D46/2418 ,  B01D46/46 ,  B01D53/9431 ,  B01D2046/2492 ,  F01N3/021 ,  F01N3/0222 ,  F01N3/023 ,  F01N3/0233 ,  F01N3/0235 ,  F01N3/0253 ,  F01N3/031 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N2410/00 ,  F01N2570/16 ,  F01N2610/03 ,  F02B23/06 ,  F02B23/0621 ,  F02B23/0669 ,  F02B23/0672 ,  F02B37/00 ,  F02F2001/247 ,  F02M26/05 ,  F02M26/10 ,  F02M26/23 ,  F02M26/26 ,  F02M26/28 ,  F02M26/33 ,  Y02T10/125

摘要： An exhaust purifying method and apparatus of an internal combustion engine are provided with an exhaust switch valve for switching a flow of exhaust gas flowing into an exhaust filter. By switching the exhaust switch valve, the exhaust gas is fed from one side and the other side of the filter, thereby stirring the soot (particulates) in the exhaust gas deposited on the filter having a NOx absorbent and an active-oxygen discharging agent supported thereon. Thus, the soot in the exhaust gas is continuously burned. Moreover, the switching of the exhaust switch valve and the rich spike are inhibited from being conducted simultaneously. In the case where the rich spike is conducted in order to discharge and reduce NOx absorbed in the NOx absorbent, the exhaust gas containing a large amount of HC and CO can be prevented from being discharged into the atmosphere without being purified.

摘要翻译： 内燃机的排气净化方法和装置设置有用于切换流入排气过滤器的废气流的排气切换阀。 通过切换排气开关阀，排气从过滤器的一侧和另一侧进料，从而搅拌沉积在具有NOx吸收剂的过滤器上的废气中的烟灰（微粒）和负载的活性氧排放剂 上。 因此，排气中的烟灰不断燃烧。 此外，排气开关阀和丰富尖峰的切换被抑制同时进行。 为了排出和减少吸收在NOx吸收剂中的NOx而进行浓穗的处理，可以防止含有大量HC，CO的废气排出到大气中而不被净化。

公开(公告)号：US06546721B2

公开(公告)日：2003-04-15

申请号：US09834894

申请日：2001-04-16

申请人： Shinya Hirota ,  Toshiaki Tanaka ,  Kazuhiro Itoh ,  Koichiro Nakatani ,  Koichi Kimura ,  Takamitsu Asanuma

发明人： Shinya Hirota ,  Toshiaki Tanaka ,  Kazuhiro Itoh ,  Koichiro Nakatani ,  Koichi Kimura ,  Takamitsu Asanuma

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  F01N3/0821 ,  F01N2570/14 ,  Y02A50/2344

摘要： An engine comprising a particulate filter which is arranged in the exhaust passage and has a function of absorbing NOx, where the amount of discharged particulate discharged from the combustion chamber per unit time is made smaller than the amount of particulate removable by oxidation per unit time without emitting a luminous flame on the particulate filter and where the temperature of the particulate filter is maintained in a temperature range where the NOx absorption rate becomes more than a certain value.

摘要翻译： 一种发动机，其包括布置在排气通道中并且具有吸收NOx的功能的颗粒过滤器，其中使得每单位时间从燃烧室排出的排出颗粒的量小于每单位时间通过氧化除去的颗粒的数量，而没有 在颗粒过滤器上发出发光的火焰，并且其中微粒过滤器的温度保持在NOx吸收速率变得超过一定值的温度范围内。

公开(公告)号：US06837043B2

公开(公告)日：2005-01-04

申请号：US10418206

申请日：2003-04-18

申请人： Koichiro Nakatani ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka ,  Yasuaki Nakano ,  Akira Mikami

发明人： Koichiro Nakatani ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka ,  Yasuaki Nakano ,  Akira Mikami

IPC分类号： F02D9/06 ,  B01D46/44 ,  F01N3/02 ,  F01N3/022 ,  F01N3/023 ,  F01N3/025 ,  F01N3/031 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N3/36 ,  F01N13/02 ,  F01N3/00

CPC分类号： F01N3/0885 ,  F01N3/0233 ,  F01N3/0253 ,  F01N3/031 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0878 ,  F01N3/2093 ,  F01N13/009 ,  F01N2260/14 ,  F01N2410/04 ,  F01N2610/03

摘要： A device for purifying the exhaust gas of an internal combustion engine includes a particulate filter carrying an active-oxygen releasing agent that can cause the sulfur poisoning, a SOx trap unit arranged upstream of the particulate filter, and a bypass section for making the exhaust gas mainly bypass said particulate filter when SOx is released from the SOx trap unit. Further, an exhaust choke valve for an exhaust brake is arranged between the SOx trap unit and the exhaust gas branch portion of the bypass section.

公开(公告)号：US06901750B2

公开(公告)日：2005-06-07

申请号：US10645621

申请日：2003-08-22

申请人： Shunsuke Toshioka ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Yasuaki Nakano ,  Koichiro Nakatani ,  Akira Mikami ,  Takanori Ueda

发明人： Shunsuke Toshioka ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Yasuaki Nakano ,  Koichiro Nakatani ,  Akira Mikami ,  Takanori Ueda

IPC分类号： F01N3/02 ,  B01D53/94 ,  F01N3/022 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/035 ,  F01N3/05 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N13/02 ,  F02B3/06 ,  F02B37/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F02M25/07 ,  F01N3/00

CPC分类号： F02D41/028 ,  B01D53/9495 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/2093 ,  F01N13/009 ,  F01N2610/03 ,  F01N2900/1612 ,  F02B3/06 ,  F02B37/00 ,  F02B2275/14 ,  F02D41/1441 ,  F02M26/05 ,  F02M26/23 ,  F02M26/33 ,  F02M26/46 ,  Y02T10/144

摘要： Exhaust emission control apparatus and method for an internal combustion engine maintain a small amount of sulfur components contained in exhaust gas flowing out of a sulfur component retainer agent even if the amount of sulfur components retained by the agent becomes great. The exhaust emission control apparatus includes a NOx retainer agent and the sulfur component retainer agent. The apparatus performs a NOx releasing process of adjusting the air-fuel ratio of exhaust gas flowing into the sulfur component retainer agent so that the air-fuel ratio of exhaust gas flowing into the NOx retainer agent becomes substantially stoichiometric or rich of stoichiometry if NOx retained by the NOx retainer agent is to be released. The apparatus prohibits the air-fuel ratio of exhaust gas flowing into the sulfur component retainer agent from becoming substantially stoichiometric or rich of stoichiometry if the amount of the sulfur components retained by the agent is at least a first predetermined amount.

摘要翻译： 即使由该试剂保留的硫成分的量变多，内燃机的废气排放控制装置和方法保持从硫成分保持剂流出的废气中所含的少量硫成分。 废气排放控制装置包括NOx保持剂和硫成分保持剂。 该装置执行NOx释放过程，其调节流入硫成分保持剂的废气的空燃比，使得流入NOx保持剂的废气的空燃比在保持NOx的情况下变成基本上化学计量或浓度更高的化学计量 由NOx保持剂被释放。 如果由试剂保留的硫成分的量至少为第一预定量，则该装置禁止流入硫成分保持剂的排气的空燃比变为基本上化学计量或浓度较高的化学计量。

公开(公告)号：US06898930B2

公开(公告)日：2005-05-31

申请号：US10333414

申请日：2002-08-08

申请人： Koichiro Nakatani ,  Shinya Hirota ,  Shunsuke Toshioka ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Akira Mikami

发明人： Koichiro Nakatani ,  Shinya Hirota ,  Shunsuke Toshioka ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Koichi Kimura ,  Akira Mikami

IPC分类号： B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N13/02 ,  F02B37/00 ,  F02M25/07 ,  F01N3/02

CPC分类号： B01J35/04 ,  B28B11/006 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0878 ,  F01N3/103 ,  F01N3/2053 ,  F01N3/2828 ,  F01N13/009 ,  F01N2240/20 ,  F01N2260/14 ,  F02B37/00 ,  F02M26/05 ,  F02M26/10 ,  F02M26/15 ,  F02M26/32

摘要： There is provided an exhaust gas purification device (22) comprising a substrate used for purifying components contained in an exhaust gas discharged from an engine. The substrate has partitions (54) which define passages (50,51) and are formed of porous material having fine pores each having a predetermined average size. The end portions of the adjacent partitions (54) defining each of part of the passages (50,51) of the substrate are partially connected to each other such that the end portions (52,53) are tapered toward the outside of the substrate. The tapered end portions partially close the end opening of the corresponding passage and form a small hole (55,56) defined by the tips thereof. The size of each small hole (55,56) is smaller than the cross sectional area of the corresponding passage (50) and larger than the sizes of the fine pores of the partitions (54).

摘要翻译： 提供了一种排气净化装置（22），其包括用于净化从发动机排出的废气中所含的组分的基板。 衬底具有限定通道（50,51）的隔板（54），并且由具有预定平均尺寸的细孔的多孔材料形成。 限定基板的通道（50,51）的每一部分的相邻隔板（54）的端部彼此部分连接，使得端部部分（52,53）朝向基板的外侧逐渐变细。 锥形端部部分地封闭相应通道的端部开口并形成由其尖端限定的小孔（55,56）。 每个小孔（55,56）的尺寸小于相应通道（50）的横截面积并且大于分隔壁（54）的细孔尺寸。

公开(公告)号：US06988360B2

公开(公告)日：2006-01-24

申请号：US10620342

申请日：2003-07-17

申请人： Koichi Kimura ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Yasuaki Nakano ,  Koichiro Nakatani ,  Akira Mikami

发明人： Koichi Kimura ,  Shinya Hirota ,  Yoshimitsu Henda ,  Kazuhiro Itoh ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Yasuaki Nakano ,  Koichiro Nakatani ,  Akira Mikami

IPC分类号： F01N3/00

CPC分类号： F01N3/0821 ,  F01N3/0233 ,  F01N3/031 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N13/02 ,  F01N2410/00 ,  F01N2410/12 ,  F01N2610/03

摘要： An exhaust emission purification device comprises a sulfur component holding agent arranged on the exhaust path of an internal combustion engine for holding a sulfur component, a NOx holding agent arranged downstream of the sulfur component holding agent in the exhaust gas for holding NOx and the sulfur components when the air-fuel ratio of the exhaust gas flowing thereinto is lean, and a reducing agent adding unit for adding a reducing agent to the exhaust gas flowing into the NOx holding agent. The concentration of the sulfur component contained in the reducing agent added by the reducing agent adding unit is lower than the concentration of at least the sulfur component contained in the fuel supplied to the combustion chamber of the internal combustion engine. Thus, the sulfur poisoning of the exhaust emission purifier can be avoided while at the same time reducing the fuel consumption rate.

摘要翻译： 排气净化装置，其特征在于，具备配置在所述硫成分保持用内燃机的排气路径上的硫成分保持剂，位于所述排气中的硫成分保持剂的下游的NO x 用于保持NO x的气体和流入其中的排气的空燃比变少的硫成分;还原剂添加单元，用于向流入NO的废气中添加还原剂 保持剂。 由还原剂添加单元添加的还原剂中所含的硫成分的浓度低于供给到内燃机的燃烧室的燃料中至少含有的硫成分的浓度。 因此，可以避免排气净化器的硫中毒，同时降低燃料消耗率。

公开(公告)号：US06820418B2

公开(公告)日：2004-11-23

申请号：US10311016

申请日：2002-12-12

申请人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Kazuhiro Itoh ,  Takamitsu Asanuma

发明人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Kazuhiro Itoh ,  Takamitsu Asanuma

IPC分类号： F01N300

CPC分类号： F01N3/023 ,  F01N9/002 ,  F01N2430/06 ,  F02D41/029 ,  F02D2200/0812 ,  Y02T10/47 ,  Y10S55/30

摘要： A particulate filter (22) is arranged in an exhaust passage of an internal combustion engine. Whether the particulate deposited on the particulate filter (22) has changed in property to a property harder to oxidize compared with right after deposition is predicted or judged. When the fact that the particulate deposited on the particulate filter (22) has changed in property to a property harder to oxidize compared with right after deposition is predicted or judged, the air-fuel ratio of the exhaust gas flowing into the particulate filter (22) is switched temporarily from lean to rich.

摘要翻译： 在内燃机的排气通道中设置有微粒过滤器（22）。 预测或判断沉积在颗粒过滤器（22）上的微粒是否具有与沉积后相比更难氧化的性质。 当预测或判断沉积在颗粒过滤器（22）上的颗粒的性质与刚刚沉积后相比更难氧化的性质的事实，流入微粒过滤器（22）的排气的空燃比 ）暂时从瘦到切换。

公开(公告)号：US06823664B2

公开(公告)日：2004-11-30

申请号：US10307311

申请日：2002-12-02

申请人： Koichiro Nakatani ,  Shinya Hirota ,  Akira Mikami ,  Toshiaki Tanaka ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka

发明人： Koichiro Nakatani ,  Shinya Hirota ,  Akira Mikami ,  Toshiaki Tanaka ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka

IPC分类号： F01N300

CPC分类号： F02D41/028 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0233 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0878 ,  F01N3/0885 ,  F01N13/0097 ,  F01N13/011 ,  F01N2570/04

摘要： An exhaust gas purification device having a NOx absorbent includes a by-pass passage for by-passing the NOx absorbent, an exhaust gas flow rate control portion for regulating both a flow rate of exhaust gas flowing to the NOx absorbent and the flow rate of the exhaust gas bypassing the NOx absorbent, and a reductant addition portion for adding reductant into an exhaust passage upstream of the NOx absorbent. In this device, when it is necessary to discharge sulfur components from the NOx absorbent, a temperature rise control is executed such that a temperature of the NOx absorbent becomes higher than a predetermined temperature. Next, a rich condition control is executed such that an air-fuel ratio of the exhaust gas flowing to the NOx absorbent becomes one of a substantially stoichiometric condition and a rich condition. The flow rate of the exhaust gas to the NOx absorbent during the temperature rise control is controlled so as to be higher than that during the rich condition control.

摘要翻译： 具有NOx吸收剂的排气净化装置具有用于旁路NOx吸收剂的旁路通路，排气流量控制部，用于调节流向NOx吸收剂的废气的流量和 旁路NO x吸收剂的废气和用于将还原剂添加到NOx吸收剂上游的排气通道的还原剂添加部分。 在该装置中，当需要从NOx吸收剂排出硫成分时，执行升温控制，使得NOx吸收剂的温度变得高于预定温度。 接下来，执行丰富状态控制，使得流向NOx吸收剂的废气的空燃比成为基本上理论上的条件和浓度条件之一。 在升温控制期间，排气对NOx吸收剂的流量进行控制，使其高于浓缩条件控制时的流量。

公开(公告)号：US06883310B2

公开(公告)日：2005-04-26

申请号：US10405647

申请日：2003-04-03

申请人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka ,  Akira Mikami

发明人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka ,  Akira Mikami

IPC分类号： F01N3/24 ,  B01D53/94 ,  F01N3/031 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N13/04 ,  F02B37/00 ,  F01N3/00

CPC分类号： F01N3/2053 ,  B01D53/9454 ,  F01N3/031 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2006 ,  F01N13/011 ,  F01N2330/06 ,  F01N2340/02 ,  F01N2410/00 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/22 ,  Y02T10/26

摘要： An internal combustion engine emission control apparatus includes split passages that divide exhaust gas discharged from an internal combustion engine into a plurality of streams. Emission control catalysts are provided that individually divide the exhaust gas in the split passages, and remove a component present in the exhaust gas at a high removal rate if a temperature of exhaust gas that inflows via the split passages satisfies a predetermined temperature condition. A controller changes proportions of the amounts of flow of the exhaust gas into the split passages so that the predetermined temperature condition is satisfied in at least one split passage of the split passages. Therefore, the emission control can be performed in a broad range of changing temperatures of the exhaust gas.

摘要翻译： 内燃机排放控制装置包括将从内燃机排出的废气分成多个流的分流通道。 提供排放控制催化剂，其分开分流通道中的废气，并且如果通过分流通道流入的废气的温度满足预定的温度条件，则以高的去除速率去除废气中存在的组分。 控制器将排气流量的比例改变为分割通道，使得在分流通道的至少一个分流通道中满足预定温度条件。 因此，排气控制可以在废气的变化温度的宽范围内进行。

公开(公告)号：US06834496B2

公开(公告)日：2004-12-28

申请号：US10259894

申请日：2002-09-30

申请人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Koichi Kimura ,  Akira Mikami

发明人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Koichi Kimura ,  Akira Mikami

IPC分类号： F01N300

CPC分类号： F01N3/206 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0842 ,  F01N3/2006 ,  F01N3/2033 ,  F01N13/011 ,  F01N2430/06 ,  F01N2430/08 ,  Y02T10/26

摘要： An exhaust gas purifying apparatus for an internal combustion engine includes plural catalysts provided in parallel. In a case where temperatures of the catalysts need to be raised, a catalyst is selected from among the catalysts and the exhaust gas is allowed to flow in the selected catalyst. In addition, the temperature of the selected catalyst is raised without using a reducing agent when the temperatures of the catalysts are lower than a temperature range in which the reducing agent can be purified. Alternatively, the reducing agent is supplied to the selected catalyst so as to raise the temperature thereof when the temperatures of the catalysts are equal to or higher than the temperature at which the reducing agent can be purified.

摘要翻译： 用于内燃机的废气净化装置包括并联设置的多个催化剂。 在需要升高催化剂温度的情况下，从催化剂中选择催化剂，并且允许废气在选择的催化剂中流动。 此外，当催化剂的温度低于还原剂可以纯化的温度范围时，所选择的催化剂的温度升高而不使用还原剂。 或者，当催化剂的温度等于或高于还原剂可以纯化的温度时，将还原剂供给到所选择的催化剂中，以提高其温度。