公开(公告)号：US09017614B2

公开(公告)日：2015-04-28

申请号：US13259574

申请日：2010-12-06

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

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

IPC分类号： B01D53/00 ,  B01D53/56 ,  F01N3/00 ,  B01D53/94 ,  F01N3/021 ,  F01N3/08 ,  F01N9/00 ,  F01N13/00

CPC分类号： B01D53/9431 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N13/009 ,  F01N2240/30 ,  F01N2510/0684 ,  F01N2610/03 ,  F01N2900/0601 ,  F01N2900/1602 ,  F01N2900/1626 ,  Y02T10/24 ,  Y02T10/47

摘要： In an internal combustion engine, inside of an engine exhaust passage, an NOx adsorption part and an NOx purification part are arranged. The NOx purification part has the property of reducing NOx which is contained in exhaust gas if the concentration of hydrocarbons is made to vibrate by within a predetermined range of amplitude and within a predetermined range of period. When NOx is to be desorbed from the NOx adsorption part, the current NOx which is contained in the exhaust gas and the NOx which is desorbed from the NOx adsorption part are reduced by making the concentration of hydrocarbons of the NOx purification part vibrate by the amplitude and period which are set for the current engine operating state, at least of which (ΔT·k) has been corrected so that the amount of hydrocarbons becomes greater.

摘要翻译： 在内燃机中，配置发动机排气通路内部的NOx吸附部和NOx净化部。 如果使碳氢化合物的浓度在预定的振幅范围内并在预定的周期范围内振动，则NOx净化部具有还原废气中所含的NOx的性质。 当NOx从NOx吸附部分脱附时，通过使NOx净化部的烃浓度振动振幅来减少废气中所含的电流NOx和从NOx吸附部脱离的NOx 和对于当前发动机运转状态设定的时间段，其中至少（＆Dgr; T·k）已被校正，使得烃的量变大。

公开(公告)号：US08701392B2

公开(公告)日：2014-04-22

申请号：US13520869

申请日：2012-01-30

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： F01N3/00 ,  F01N3/02 ,  F01N3/20

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N2240/30 ,  F01N2610/03 ,  F02B29/0437 ,  F02D41/0055 ,  F02D41/0235 ,  F02D41/0275 ,  F02D41/10 ,  F02D41/3076 ,  F02D41/405 ,  F02D2200/101 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/28 ,  Y02T10/47

摘要： An internal combustion engine wherein an exhaust purification catalyst and a hydrocarbon feed valve are arranged downstream in an exhaust passage. A first NOX purification method, which removes NOX by making a concentration of hydrocarbons that flows into the exhaust purification catalyst vibrate within predetermined amplitude and period ranges and a second NOX purification method which utilizes an adsorption action of NOX to the exhaust purification catalyst are used. A high pressure exhaust gas recirculation system (HPL) causing recirculation of high pressure exhaust gas and a low pressure exhaust gas recirculation system (LPL) causing recirculation of low pressure exhaust gas are provided. When performing an LPL recirculation while performing an NOX purification action by the second NOX purification method, if an acceleration operation occurs, the NOX purification action is switched to the NOX purification action by the first NOX purification method and recirculation is temporarily switched to the HPL recirculation.

摘要翻译： 一种内燃机，其中排气净化催化剂和烃供给阀布置在排气通道的下游。 通过使流入排气净化催化剂的烃浓度在预定的振幅和周期范围内振动来除去NO x的第一NO x净化方法，并且使用利用NO x对排气净化催化剂的吸附作用的第二NOX净化方法。 提供了引起高压废气再循环的高压废气再循环系统（HPL）和引起低压废气再循环的低压排气再循环系统（LPL）。 当通过第二NOX净化方法进行NOX净化作用时进行LPL再循环时，如果发生加速操作，则通过第一NOX净化方法将NOX净化作用切换到NO x净化作用，并且将循环暂时切换到HPL再循环 。

公开(公告)号：US20140105799A1

公开(公告)日：2014-04-17

申请号：US14108113

申请日：2013-12-16

申请人： Yuki BISAIJI ,  Kohei YOSHIDA ,  Mikio INOUE

发明人： Yuki BISAIJI ,  Kohei YOSHIDA ,  Mikio INOUE

IPC分类号： B01D53/94

CPC分类号： B01D53/9431 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2033 ,  F01N2240/30 ,  F01N2560/026 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/405 ,  Y02T10/26

摘要： A method for purifying exhaust gas of an internal combustion engine, including chemically reducing NOx that is contained in the exhaust gas when a concentration of hydrocarbons flowing into an exhaust purification catalyst is made to vibrate within a predetermined range of amplitude and within a predetermined range of period, wherein, during the chemical reduction, the NOx contained in the exhaust gas is reacted with reformed hydrocarbons to produce a reducing intermediate containing nitrogen and hydrocarbons, a reducing action of the reducing intermediate chemically reduces the NOx, and the NOx is chemically reduced without storing nitrates or with storing a fine amount of the nitrates in a basic layer of the exhaust purification catalyst.

摘要翻译： 一种净化内燃机的废气的方法，其特征在于，在使排气净化催化剂中的烃浓度在预定的振幅范围内振动并且在规定的范围内时，包含化学还原废气中含有的NOx的方法 其中，在化学还原期间，废气中所含的NOx与重整烃反应以产生包含氮和烃的还原中间体，还原中间体的还原作用化学还原NOx，并且化学还原NOx，而没有 储存硝酸盐或将精细量的硝酸盐储存在排气净化催化剂的碱性层中。

公开(公告)号：US08695325B2

公开(公告)日：2014-04-15

申请号：US13262506

申请日：2010-03-15

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： F01N3/00

CPC分类号： F01N3/2033 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9472 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/102 ,  B01D2255/202 ,  B01J23/40 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/2073 ,  F01N3/36 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/18 ,  Y02T10/24 ,  Y02T10/26

摘要： Inside of an engine exhaust passage, in order from an upstream side, a hydrocarbon feed valve oxidation catalyst exhaust purification catalyst, and NOX selective reduction catalyst are arranged. By lowering the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst by a predetermined period while maintaining it lean, the NOX is reduced in the exhaust purification catalyst and the NOX which was not reduced at the exhaust purification catalyst is reduced by the ammonia which is adsorbed at the NOX selective reduction catalyst. The air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst is sometimes switched from lean to rich. At this time, the ammonia which was generated at the exhaust purification catalyst is adsorbed at the NOX selective reduction catalyst.

摘要翻译： 在发动机排气通道的内部，从上游侧开始，设置烃进料阀氧化催化剂排气净化催化剂和NO x选择还原催化剂。 通过将流入排气净化催化剂的废气的空燃比降低预定的时间，同时保持稀薄，排气净化催化剂中的NO x降低，并且在排气净化催化剂下没有还原的NO x降低 吸附在NOX选择还原催化剂上的氨。 流入排气净化催化剂的废气的空燃比有时从稀薄转为浓。 此时，在排气净化催化剂上产生的氨被NO X选择还原催化剂吸附。

公开(公告)号：US08683784B2

公开(公告)日：2014-04-01

申请号：US13202733

申请日：2010-03-15

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： F01N3/028

CPC分类号： F01N3/10 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1028 ,  B01D2255/104 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2063 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/9025 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/208 ,  F01N13/009 ,  F01N2430/06 ,  F01N2430/085 ,  F01N2510/0684 ,  F01N2560/06 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2900/1602 ,  F01N2900/1612 ,  F01N2900/1626 ,  F02B37/00 ,  F02D41/0245 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/405 ,  F02D2200/0802 ,  Y02A50/2344 ,  Y02T10/24

摘要： Inside an engine exhaust passage, in order from the upstream side, a hydrocarbon feed valve, oxidation catalyst, and exhaust purification catalyst are arranged. A first NOx purification method which lowers the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst by a predetermined period while maintaining it lean so as to remove NOx without causing NOx to be stored in the form of nitrates and a second NOx purification method which switches the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst from lean to rich by a period longer than the above period so as to remove NOx are selectively used in accordance with an operating state of the engine.

摘要翻译： 在发动机排气通道内，从上游侧开始，设置有碳氢化合物进料阀，氧化催化剂和排气净化催化剂。 第一NOx净化方法，其将流入排气净化催化剂的废气的空燃比降低预定时间，同时保持稀薄，以便除去NOx，而不会使NOx以硝酸盐的形式存储，并且第二NOx 根据发动机的运转状态，选择性地使用将排出净化催化剂的废气的空燃比从上述期间切换到浓度超过上述期间以除去NOx的净化方法。

公开(公告)号：US08679410B2

公开(公告)日：2014-03-25

申请号：US13202692

申请日：2010-08-30

申请人： Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue ,  Yuki Bisaiji

发明人： Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue ,  Yuki Bisaiji

IPC分类号： B01D50/00 ,  F01N3/00

CPC分类号： B01D53/9454 ,  B01D53/9409 ,  B01D53/9422 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/007 ,  F01N2240/30 ,  F01N2510/06 ,  F01N2900/1402 ,  F01N2900/1614 ,  F02D41/0275

摘要： An internal combustion engine in an engine exhaust passage of which a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. If the hydrocarbon feed valve (15) feeds hydrocarbons by a period of within 5 seconds, a reducing intermediate is produced inside the exhaust purification catalyst (13). This reducing intermediate is used for NOX purification processing. At the time of engine operation, the demanded produced amount of the reducing intermediate required for reducing the NOx is calculated. The amount of production of the reducing intermediate is made to become this demanded produced amount by control of the feed amount and feed period of hydrocarbons.

摘要翻译： 发动机排气通道内设有内燃机，其内设有烃供给阀（15）和排气净化催化剂（13）。 如果烃进料阀（15）在5秒钟内进料烃，则在排气净化催化剂（13）内产生还原中间体。 该还原中间体用于NOX净化处理。 在发动机运转时，计算需要的减少NOx还原中间体的产生量。 通过控制烃的进料量和进料周期，使还原中间体的生产量成为该需求量。

公开(公告)号：US20130074475A1

公开(公告)日：2013-03-28

申请号：US13262865

申请日：2010-05-20

申请人： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

发明人： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

IPC分类号： F01N3/20

CPC分类号： F01N3/2073 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2257/404 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/208 ,  F01N13/009 ,  F01N2240/30 ,  F01N2510/06 ,  F01N2560/025 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/08 ,  F01N2900/1402 ,  Y02T10/24

摘要： In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (16), an exhaust purification catalyst (13), an aqueous urea solution feed valve (17), and an NOx selective reduction catalyst (15) are arranged in that order. A first NOx purification method which makes the concentration of hydrocarbons flowing into the exhaust purification catalyst (13) vibrate by within predetermined ranges of amplitude and period to reduce the NOx, which is contained in exhaust gas in the exhaust purification catalyst (13) and a second NOx purification method which uses the fed aqueous urea solution to reduce the NOx in the NOx selective reduction catalyst (15) are selectively used.

摘要翻译： 在内燃机中，在发动机排气通路内部设置有碳氢化合物供给阀（16），排气净化催化剂（13），尿素水供给阀（17）和NOx选择还原催化剂（15） 以该顺序。 使流入排气净化催化剂（13）的烃浓度在振幅和周期的预定范围内振动的第一NOx净化方法，以减少排气净化催化剂（13）中的废气中所含的NOx和 选择性地使用使用供给的尿素水溶液来还原NOx选择还原催化剂（15）中的NOx的第二NOx净化方法。

公开(公告)号：US20130028795A1

公开(公告)日：2013-01-31

申请号：US13639559

申请日：2010-04-08

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： B01D53/94

CPC分类号： F01N3/0814 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0885 ,  F01N3/2066 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/1612 ,  Y02T10/24

摘要： An exhaust gas purification apparatus for an internal combustion engine comprises a NOx selective reduction catalyst provided in an exhaust passage of an internal combustion engine; an upstream side oxidation catalyst which is a catalyst having an oxidizing ability provided in the exhaust passage upstream from the NOx selective reduction catalyst and which includes a carrier for carrying a noble metal for oxidation, the carrier being formed of a basic carrier; and a reducing agent supply until which supplies a reducing agent to an exhaust gas allowed to flow into the NOx selective reduction catalyst. Accordingly, even when the oxidation catalyst causes the SOx poisoning in the exhaust gas purification apparatus for the internal combustion engine having the oxidation catalyst and the NOx selective reduction catalyst provided in the exhaust passage, the reduction efficiency of NOx reduced by the aid of the NOx selective reduction catalyst is favorably maintained.

摘要翻译： 一种用于内燃机的废气净化设备包括设置在内燃机的排气通道中的NOx选择还原催化剂; 上游侧氧化催化剂，其是具有氧化能力的催化剂，其设置在NOx选择还原催化剂上游的排气通道中，并且包括用于承载用于氧化的贵金属的载体，载体由碱性载体形成; 以及还原剂供应，直到向排气中的还原剂供应流入NOx选择还原催化剂。 因此，即使氧化催化剂在具有氧化催化剂的内燃机的排气净化装置和设置在排气通路中的NOx选择还原催化剂的SO x中毒的情况下，也可以借助于NOx减少NOx的还原效率 有选择地还原催化剂。

公开(公告)号：US20130000284A1

公开(公告)日：2013-01-03

申请号：US13255786

申请日：2010-03-23

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： F01N3/10

CPC分类号： F01N3/0871 ,  B01D53/9422 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/206 ,  B01D2255/91 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/206 ,  F01N2240/30 ,  F01N2610/146 ,  F01N2900/0411 ,  F01N2900/1614 ,  F02D41/0275 ,  F02D41/1475 ,  F02D2250/36 ,  F02N2200/026

摘要： Inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. At the time of engine operation, a first NOx purification method which maintains the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) lean while injecting hydrocarbons from the hydrocarbon feed valve (15) at predetermined feed intervals to thereby remove the NOx which is contained in exhaust gas and a second NOx purification method which switches the air-fuel ratio of the exhaust gas flowing to the exhaust purification catalyst (13) from lean to rich by intervals longer than the above predetermined feed intervals to thereby remove the NOx are selectively used in accordance with the sulfur poisoning of the exhaust purification catalyst (13).

摘要翻译： 在发动机排气通道内设有烃供给阀（15）和排气净化催化剂（13）。 在发动机运转时，保持流入排气净化催化剂（13）的废气的空燃比稀薄的第一NOx净化方法，同时以预定的进料间隔从烃供给阀（15）喷射烃，由此 除去废气中所含的NOx和第二NOx净化方法，其将从排气净化催化剂（13）流出的废气的空燃比从上述预定进料间隔的间隔切换成浓， 根据排气净化催化剂（13）的硫中毒，选择性地使用除去NOx。

公开(公告)号：US20120131908A1

公开(公告)日：2012-05-31

申请号：US13202694

申请日：2010-03-15

申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC分类号： F01N3/10

CPC分类号： B01D53/9431 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2033 ,  F01N2240/30 ,  F01N2560/026 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/405 ,  Y02T10/26

摘要： An internal combustion engine in an engine exhaust passage of which a hydrocarbon feed valve and an exhaust purification catalyst are arranged. On the exhaust purification catalyst, platinum Pt is carried and a basic layer is formed. A concentration of hydrocarbons flowing into the exhaust purification catalyst is made to vibrate within a predetermined range of amplitude of 200 ppm or more and within a predetermined range of period of 5 seconds or less whereby NOx which is contained in the exhaust gas is reduced in the exhaust purification catalyst.

摘要翻译： 发动机排气通道内配置有碳氢化合物供给阀和排气净化催化剂的内燃机。 在排气净化催化剂上，携带铂Pt并形成碱性层。 使流入排气净化催化剂的烃浓度在200ppm以上的预定范围内振动，并且在5秒以下的预定范围内振动，从而在排气中包含的NOx减少 尾气净化催化剂。