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：US06901743B2

公开(公告)日：2005-06-07

申请号：US10452636

申请日：2003-06-03

申请人： Takamitsu Asanuma ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takanori Ueda ,  Tetsuya Yamashita ,  Yasuaki Nakano

发明人： Takamitsu Asanuma ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takanori Ueda ,  Tetsuya Yamashita ,  Yasuaki Nakano

IPC分类号： F02M25/07 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F02D21/08 ,  F01N5/00

CPC分类号： F01N3/2013 ,  F01N3/20 ,  F01N2240/26 ,  F02M26/15 ,  F02M26/37 ,  Y02T10/26

摘要： An exhaust gas collecting apparatus, of an internal combustion engine including a collection vessel that can hold exhaust gas, an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage to the collection vessel, an exhaust gas introduction passage through which the exhaust gas is introduced from the collection vessel to the exhaust passage at a position upstream from the catalytic converter, a first valve that is switchable between a position where the introduction of the exhaust gas from the exhaust passage to the exhaust gas taking-out passage is permitted and a position where the introduction of the exhaust gas is prevented, and a second valve that is switchable between a position where the introduction of the exhaust gas through the exhaust gas introduction passage is permitted and a position where the introduction of the exhaust gas is prevented.

摘要翻译： 一种内燃机的废气收集装置，包括可容纳废气的收集容器，排气从废气通道引入到收集容器的废气取出通道，排气导入通道， 废气从催化转化器上游的位置从收集容器引入排气通道，第一阀可在从排气通道排出到废气取出通道的位置 并且能够防止排气的引入的位置，以及可以在允许通过排气导入通道引入排气的位置和排气的引入位置之间切换的第二阀 被阻止

公开(公告)号：US06644022B2

公开(公告)日：2003-11-11

申请号：US09979064

申请日：2001-11-16

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

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

IPC分类号： F01N300

CPC分类号： F01N3/0233 ,  F01N3/023 ,  F01N3/0235 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N2260/14 ,  F01N2290/00 ,  F01N2330/06 ,  F01N2410/08 ,  F01N2510/06 ,  F01N2570/16 ,  F02B37/00 ,  F02M26/05 ,  F02M26/28

摘要： A particulate filter (22) is arranged in an exhaust passage of an engine, while an exhaust throttle valve (45) is arranged in the exhaust passage downstream of the particulate filter (22). The exhaust throttle valve (45) is fully closed once, then fully opened cyclically. At that time, the flow velocity of the exhaust gas is increased for just an instant in a pulse-like manner, whereby masses of particulate are separated from the particulate filter 22 and discharged.

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：US06370869B1

公开(公告)日：2002-04-16

申请号：US09627991

申请日：2000-07-28

申请人： Shinya Hirota ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Toshiaki Tanaka

发明人： Shinya Hirota ,  Takamitsu Asanuma ,  Shunsuke Toshioka ,  Toshiaki Tanaka

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  F01N3/101 ,  F01N3/2006 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/011 ,  F01N13/107 ,  F01N2260/14 ,  F01N2430/06 ,  F02B1/04 ,  F02B3/06 ,  F02B75/20 ,  F02B2075/125 ,  F02B2075/1816 ,  F02D9/04 ,  F02D41/0047 ,  F02D41/025 ,  F02D41/1446 ,  F02D41/1448 ,  F02D41/3023 ,  F02D41/405 ,  F02D2200/0602 ,  F02F1/4264 ,  F02F3/26 ,  F02M26/15 ,  F02M26/43 ,  Y02T10/123 ,  Y02T10/22 ,  Y02T10/26 ,  Y02T10/44

摘要： An exhaust purification device comprising a first catalyst and a second catalyst arranged in the engine exhaust passage downstream of the first catalyst. An exhaust control valve is arranged downstream of the second catalyst. When the reducing components in the exhaust gas should be mainly oxidized by the first catalyst, the exhaust control valve is substantially fully closed and auxiliary fuel is additionally injected into the combustion chamber. When the reducing components in the exhaust gas should be mainly oxidized by the second catalyst, the exhaust control valve is fully opened and injection of auxiliary fuel is stopped.

摘要翻译： 一种排气净化装置，包括布置在第一催化剂下游的发动机排气通道中的第一催化剂和第二催化剂。 排气控制阀设置在第二催化剂的下游。 当排气中的还原组分主要被第一催化剂氧化时，排气控制阀基本上完全关闭，另外将辅助燃料喷射到燃烧室中。 当排气中的还原组分主要被第二催化剂氧化时，排气控制阀完全打开并停止辅助燃料的喷射。

公开(公告)号：US5735119A

公开(公告)日：1998-04-07

申请号：US620623

申请日：1996-03-22

申请人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Kenji Katoh ,  Satoshi Iguchi

发明人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Kenji Katoh ,  Satoshi Iguchi

IPC分类号： F02D45/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14

CPC分类号： F02D41/0235 ,  B01D53/9495 ,  F01N11/007 ,  F02D41/0275 ,  F01N2550/03 ,  F01N2900/0422 ,  F01N3/0842 ,  F02D2200/0806 ,  F02D2200/0808 ,  Y02T10/47

摘要： An exhaust gas purification device of an engine providing a NO.sub.x absorbent arranged in the exhaust passage. An O.sub.2 sensor is arranged in the engine exhaust passage downstream of the NO.sub.x absorbent. The degree of deterioration of the NO.sub.x absorbent is detected from the output signal of the O.sub.2 sensor. The cycle for making the air-fuel ratio of the air-fuel mixture rich for causing the release of the NO.sub.x from the NO.sub.x absorbent and the rich time at that time are shortened the greater the deterioration of the NO.sub.x absorbent.

摘要翻译： 一种设置在排气通道中的设置有NOx吸收剂的发动机的排气净化装置。 O2传感器布置在NOx吸收剂下游的发动机排气通道中。 根据O2传感器的输出信号检测NOx吸收剂的劣化程度。 用于使来自NOx吸收剂的NOx释放浓缩的空气 - 燃料混合物的空燃比和当时的富时间的循环缩短了NOx吸收剂的劣化越大。

公开(公告)号：US5715679A

公开(公告)日：1998-02-10

申请号：US620768

申请日：1996-03-22

申请人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

发明人： Takamitsu Asanuma ,  Tetsuro Kihara ,  Shinichi Takeshima ,  Toshiaki Tanaka ,  Kenji Katoh ,  Satoshi Iguchi

IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F01N3/10

CPC分类号： B01D53/9481 ,  B01D53/9495 ,  F01N11/00 ,  F01N3/0842 ,  F01N3/0871 ,  F02D41/0275 ,  F02D41/1441 ,  F02D2200/0806 ,  F02D41/1402 ,  Y02T10/47

摘要： An exhaust purification device of an engine providing a NO.sub.x absorbent arranged in the exhaust passage. An O.sub.2 sensor generating a current proportional to the air-fuel ratio is arranged in the engine exhaust passage downstream of the NO.sub.x absorbent. The amount of NO.sub.x actually absorbed in the NO.sub.x absorbent at the time of release of the NO.sub.x is calculated on the basis of the output signal of this O.sub.2 sensor. On the basis of this calculated amount of NO.sub.x, correction is made so that the estimated amount of NO.sub.x represents the actual amount of absorption of NO.sub.x. When this corrected estimated amount of NO.sub.x reaches a set value, the action of releasing the NO.sub.x from the NO.sub.x absorbent is carried out.

摘要翻译： 发动机的排气净化装置，其设置在排气通路内。 产生与空燃比成比例的电流的O 2传感器布置在NOx吸收剂下游的发动机排气通道中。 基于该O2传感器的输出信号计算在NOx释放时在NOx吸收剂中实际吸收的NOx的量。 基于该计算出的NOx量，进行校正，使得NOx的估计量表示NOx的实际吸收量。 当该修正的NOx估计量达到设定值时，进行从NOx吸收剂释放NOx的动作。

公开(公告)号：US5577382A

公开(公告)日：1996-11-26

申请号：US493657

申请日：1995-06-22

申请人： Tetsuro Kihara ,  Kenji Katoh ,  Takamitsu Asanuma ,  Satoshi Iguchi

发明人： Tetsuro Kihara ,  Kenji Katoh ,  Takamitsu Asanuma ,  Satoshi Iguchi

IPC分类号： F02D45/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/28

CPC分类号： F01N3/0842 ,  B01D53/9495 ,  F01N11/007 ,  F02D41/0275 ,  F02D41/028 ,  F01N2240/18 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2570/04 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust purification device which is capable of detecting the degree of deterioration of the NOx absorbent or the three-way catalyst arranged in the exhaust passage of an engine. An O.sub.2 sensor whose output current or output voltage is proportional to the air-fuel ratio is arranged inside the exhaust passage downstream of the NOx absorbent or three-way catalyst. The air-fuel ratio of the air-fuel mixture is temporarily changed from lean to rich or from rich to lean to enable the degree of deterioration of the NOx absorbent or three-way catalyst to be detected from the peak value of the output current or voltage of the O.sub.2 sensor during the time when the air-fuel ratio is changed.

摘要翻译： 能够检测配置在发动机的排气通路内的NOx吸收剂或三元催化剂的劣化程度的排气净化装置。 其输出电流或输出电压与空燃比成比例的O2传感器布置在NOx吸收剂或三元催化剂下游的排气通道的内部。 空气 - 燃料混合物的空燃比暂时由稀浓度变为浓或从浓到稀，从而能够根据输出电流的峰值来检测NOx吸收剂或三元催化剂的劣化程度，或 空燃比变化时的O2传感器的电压。

公开(公告)号：US09108153B2

公开(公告)日：2015-08-18

申请号：US13257789

申请日：2010-07-28

申请人： Hiromasa Nishioka ,  Kohei Yoshida ,  Yoshihisa Tsukamoto ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

发明人： Hiromasa Nishioka ,  Kohei Yoshida ,  Yoshihisa Tsukamoto ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

IPC分类号： F01N3/10 ,  B01D53/94 ,  F01N3/08 ,  F01N3/28

CPC分类号： B01D53/9422 ,  B01D53/9409 ,  B01D2251/208 ,  B01D2255/102 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2255/912 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/28 ,  F01N2240/30 ,  F01N2430/06 ,  F01N2510/0684

摘要： In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust treatment catalyst (13) are arranged. On a substrate (45) of the exhaust treatment catalyst (13), a coat layer comprised of at least two layers of a top coat layer (46) and a bottom coat layer (47) is formed. The top coat layer (46) is comprised of an exhaust purification catalyst for reacting NOx contained in exhaust gas and reformed hydrocarbons, while the bottom coat layer (47) is comprised of an NOx absorption catalyst. The concentration of hydrocarbons which flows into the exhaust treatment catalyst (13) is made to vibrate within a predetermined range of amplitude and within a predetermined range of period. Due to this, NOx contained in exhaust gas and NOx desorbed from the NOx absorption catalyst (47) are reduced in the exhaust purification catalyst (46).

摘要翻译： 在内燃机中，配置发动机排气通路内部的烃供给阀（15）和排气处理催化剂（13）。 在排气处理催化剂（13）的基板（45）上形成由至少两层顶涂层（46）和底涂层（47）构成的涂层。 顶涂层（46）由用于使废气中所含的NOx和重整烃反应的排气净化催化剂构成，而底涂层（47）由NOx吸收催化剂构成。 使流入排气处理催化剂（13）的烃的浓度在预定的振幅范围内振动并且在预定的周期范围内。 由此，在排气净化催化剂（46）中减少了废气中所含的NOx和从NOx吸收催化剂（47）脱附的NOx。