公开(公告)号：US09534552B2

公开(公告)日：2017-01-03

申请号：US14423713

申请日：2012-08-28

Applicant: Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kenji Sakurai ,  Kohki Nakamura

Inventor： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kenji Sakurai ,  Kohki Nakamura

IPC: F01N3/00 ,  F02D41/02 ,  F01N3/10 ,  F01N9/00 ,  F01N3/20 ,  F01N3/025 ,  F02D41/14

CPC classification number: F02D41/0295 ,  F01N3/0253 ,  F01N3/101 ,  F01N3/20 ,  F01N9/00 ,  F01N9/002 ,  F01N2430/06 ,  F01N2610/03 ,  F01N2610/105 ,  F01N2900/1811 ,  F02D41/0275 ,  F02D41/1475 ,  F02D2200/0806 ,  Y02T10/22 ,  Y02T10/47

Abstract: A three-way catalyst (20) having an oxygen storage function and an exhaust purification catalyst (22) are arranged in the exhaust passage of an internal combustion engine. During medium-load operation of the engine the degree of lean of the air-fuel ratio in the combustion chamber (5) is increased so as to increase the oxygen storage amount of the three-way catalyst (20) to the maximum oxygen storage amount, and the air-fuel ratio in the combustion chamber (5) even after the oxygen storage amount of the three-way catalyst (20) has reached the maximum oxygen, storage amount is maintained at lean, after which the air-fuel ratio is returned to rich, and at this time, as the amount of poisoning of a noble metal catalyst when the air-fuel ratio in the combustion chamber (5) is rich increases, the amount of time for which the air-fuel ratio in the combustion chamber (5) is maintained at lean is increased.

Abstract translation: 具有储氧功能的三元催化剂（20）和排气净化催化剂（22）布置在内燃机的排气通道中。 在发动机的中负荷运转时，燃烧室（5）中的空燃比的倾斜度增加，以将三元催化剂（20）的储氧量增加到最大储氧量 ，即使在三元催化剂（20）的储氧量达到最大氧气之后，燃烧室（5）中的空燃比保持在稀薄，空燃比为 这时，当燃烧室（5）中的空燃比变浓时，贵金属催化剂的中毒量增加，燃烧时的空燃比的时间 维持在倾斜的腔室（5）增加。

公开(公告)号：US09517436B2

公开(公告)日：2016-12-13

申请号：US14130414

申请日：2012-09-10

Applicant: Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue ,  Kohki Nakamura

Inventor： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue ,  Kohki Nakamura

IPC: B01D53/94 ,  F01N3/021 ,  F01N3/08 ,  F01N3/025 ,  F01N3/20

CPC classification number: B01D53/9431 ,  F01N3/021 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2066 ,  F01N2610/03 ,  F01N2610/144 ,  F01N2610/1453 ,  F01N2900/1808

Abstract: An internal combustion engine wherein an exhaust purification catalyst and hydrocarbon feed valve are arranged in an engine exhaust passage and wherein the NOX which is contained in the exhaust gas is removed by injection of hydrocarbons from the hydrocarbon feed valve by a predetermined period. Hydrocarbons are injected from the hydrocarbon feed valve toward the upstream side of the engine exhaust passage. When hydrocarbons are injected from the hydrocarbon feed valve by a predetermined period, the injection pressure of the hydrocarbons is made to gradually fall from injection start to injection end in the injection time period of each injection.

Abstract translation: 一种内燃机，其中排气净化催化剂和烃供给阀布置在发动机排气通道中，并且其中通过从烃进料阀注入烃预定时间段来排除废气中所含的NO x。 碳氢化合物从烃进料阀向发动机排气通道的上游侧注入。 当从烃进料阀注入烃类预定时间时，在每次注射的喷射时间段内使烃的喷射压力从喷射开始到喷射结束逐渐下降。

公开(公告)号：US09441515B2

公开(公告)日：2016-09-13

申请号：US14114587

申请日：2013-02-05

Applicant: Yuki Haba ,  Kohei Yoshida

Inventor： Yuki Haba ,  Kohei Yoshida

IPC: F01N3/00 ,  F01N3/08 ,  B01D53/94 ,  F02D41/02 ,  F02D41/14 ,  F01N3/20

CPC classification number: F01N3/0814 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2033 ,  F01N2900/1602 ,  F01N2900/1614 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/1475 ,  Y02T10/26

Abstract: A hydrocarbon feed valve and an exhaust purification catalyst are arranged in an engine exhaust passage. A first NOX purification method which injects hydrocarbons from the hydrocarbon feed valve by a predetermined period to thereby remove NOX which is contained in the exhaust gas and a second NOX purification method which makes the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst rich to make the exhaust purification catalyst release the stored NOX when the NOX which is stored in the exhaust purification catalyst exceeds a first allowable value are selectively used. Hydrocarbons are injected from the hydrocarbon feed valve by the predetermined period, and when the NOX which is stored in the exhaust purification catalyst exceeds a second allowable value which is smaller than the first allowable value, the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst is made rich.

Abstract translation: 碳氢化合物进料阀和排气净化催化剂设置在发动机排气通道中。 第一NOX净化方法，其从烃进料阀注入预定时间的烃，从而除去废气中所含的NO x，以及第二NOX净化方法，其使流入排气中的排气的空燃比 当选择性地使用存储在排气净化催化剂中的NOX超过第一容许值时，净化催化剂使得排气净化催化剂释放储存的NOX。 碳氢化合物从烃进料阀注入预定的时间，当存储在排气净化催化剂中的NOX超过比第一容许值小的第二容许值时，流入的排气的空燃比 进入排气净化催化剂得到丰富。

公开(公告)号：US20150361844A1

公开(公告)日：2015-12-17

申请号：US14763215

申请日：2013-01-31

Applicant: Kohei YOSHIDA ,  Toshihiro MORI ,  Ryohei OONO

Inventor： Kohei YOSHIDA ,  Toshihiro MORI ,  Ryohei OONO

IPC: F01N3/08 ,  F01N11/00 ,  F01N9/00

CPC classification number: F01N3/0871 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2033 ,  F01N9/002 ,  F01N11/002 ,  F01N11/007 ,  F01N13/008 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/1453 ,  F01N2900/0416 ,  Y02T10/26 ,  Y02T10/47

Abstract: A straight-flow exhaust purification catalyst (13) and a hydrocarbon supply valve (15) are arranged in the engine exhaust passage of an internal combustion engine. A region which is a limited portion of the upstream-side end-surface peripheral part of the exhaust gas purification catalyst (13), where there is a possibility of clogging due to deposition oh fine particles in the exhaust gas, is predicted to be a fine particle deposition region, and an air-fuel ratio sensor (23) is arranged within an exhaust gas circulation region, which is downstream from the downstream-side end-surface peripheral part of the exhaust purification catalyst (13) and is downstream from the fine particle deposition region when viewed along the longitudinal axis of the exhaust purification catalyst. When the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) momentarily changes and the rate of change of the output value from, the air-fuel ratio sensor (23) decreases, it is determined that clogging due to deposition of fine particles in the exhaust gas has occurred in the fine particle deposition region in the upstream-side end-surface peripheral pat of the exhaust purification catalyst (13).

Abstract translation: 在内燃机的发动机排气通道中配置有直流排气净化催化剂（13）和烃供给阀（15）。 作为废气净化催化剂（13）的上游侧端面周边部分的有限部分的区域，其中由于沉积而导致的堵塞的可能性，排气中的细颗粒被预测为 细颗粒沉积区域和空燃比传感器（23）布置在排气净化催化剂（13）的下游侧端面周边部分的下游的废气循环区域内，并且位于排气净化催化剂 当沿着排气净化催化剂的纵向轴线观察细颗粒沉积区域。 流入排气净化催化剂（13）的排气的空燃比瞬间变化，空燃比传感器（23）的输出值的变化率降低时，判定为 在排气净化催化剂（13）的上游侧端面周边pat中的微细颗粒沉积区域中已经发生细小颗粒在废气中的沉积。

公开(公告)号：US09108154B2

公开(公告)日：2015-08-18

申请号：US13264594

申请日：2010-12-20

Applicant: Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

Inventor： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

IPC: F01N3/10 ,  F01N3/00 ,  F01N9/00 ,  B01D53/94 ,  F01N3/20 ,  F01N3/08 ,  F01N13/00

CPC classification number: B01D53/9431 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/208 ,  F01N13/009 ,  F01N2610/03 ,  F01N2900/0422 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1808 ,  F01N2900/1812 ,  Y02T10/24

Abstract: In an internal combustion engine, 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, the amplitude of change of the concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to become within a predetermined range of amplitude by control of at least one of the injection time and injection pressure of hydrocarbons from the hydrocarbon feed valve (15). In this case, when only the injection time of hydrocarbons is controlled, the injection time of hydrocarbons under the same engine operating state is made longer the higher the temperature of the exhaust purification catalyst (13).

Abstract translation: 在内燃机中，配置有发动机排气通路内部的烃供给阀（15）和排气净化催化剂（13）。 在发动机运转时，流入排气净化催化剂（13）的碳氢化合物浓度的变化幅度通过控制喷射时间和喷射压力中的至少一个而变为预定的振幅范围 来自烃进料阀（15）的烃。 在这种情况下，当仅控制烃的喷射时间时，使排气净化催化剂（13）的温度越高，在相同的发动机运转状态下的烃的喷射时间越长。

公开(公告)号：US09108153B2

公开(公告)日：2015-08-18

申请号：US13257789

申请日：2010-07-28

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

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

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

CPC classification number: 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

Abstract: 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).

Abstract translation: 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。

公开(公告)号：US20140286828A1

公开(公告)日：2014-09-25

申请号：US13578148

申请日：2011-11-30

Applicant: Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue

Inventor： Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue

IPC: B01D53/94

CPC classification number: F01N3/0842 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2026 ,  F01N3/2033 ,  F01N3/36 ,  F01N13/0097 ,  F01N2430/06 ,  F01N2510/0682 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2900/0412 ,  F01N2900/1404 ,  F01N2900/1602 ,  F02D41/0245 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1446

Abstract: An exhaust purification system of an internal combustion engine provided with an exhaust purification catalyst which reacts NOX and hydrocarbons. The exhaust purification catalyst includes an upstream side catalyst and a downstream side catalyst. The upstream side catalyst has an oxidation ability, while the downstream side catalyst carries precious metal catalyst particles on the exhaust flow surface and is formed with basic exhaust flow surface parts. The exhaust purification catalyst can make the concentration of hydrocarbons vibrate by within a predetermined range of amplitude and by within a predetermined range of period so as to partially oxidize the hydrocarbons or produce reducing intermediates at the upstream side catalyst. When the temperature of the upstream side catalyst is less than a first judgment temperature and the temperature of the downstream side catalyst is higher than a second judgment temperature, the temperature of the upstream side catalyst is made to rise.

Abstract translation: 具有排气净化催化剂的内燃机的排气净化系统，其与NOx反应。 废气净化催化剂包括上游侧催化剂和下游侧催化剂。 上游侧催化剂具有氧化能力，而下游侧催化剂在废气流动面上载有贵金属催化剂颗粒，并形成有碱性废气流表面部分。 排气净化催化剂可以使烃的浓度在预定的振幅范围内振动并在预定的时间范围内，以便部分地氧化烃或在上游侧催化剂上产生还原中间体。 当上游侧催化剂的温度低于第一判断温度且下游侧催化剂的温度高于第二判定温度时，上游侧催化剂的温度上升。

公开(公告)号：US08833056B2

公开(公告)日：2014-09-16

申请号：US13262442

申请日：2010-09-02

Applicant: Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue

Inventor： Kazuhiro Umemoto ,  Kohei Yoshida ,  Mikio Inoue

IPC: F01N3/00 ,  F02D41/02 ,  F01N3/20 ,  F01N3/08 ,  F02D41/40 ,  B01D53/94

CPC classification number: B01D53/9431 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/206 ,  F01N3/208 ,  F01N2240/30 ,  F01N2610/03 ,  F01N2900/0422 ,  F02D41/024 ,  F02D41/0275 ,  F02D41/405 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/44

Abstract: In an internal combustion engine, inside an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. A first hydrocarbon feed method which injections hydrocarbons from the hydrocarbon feed valve (15) by predetermined feed intervals (ΔT) so that the air-fuel ratio of the exhaust gas falls to the demanded minimum air-fuel ratio (X) to thereby remove the NOx contained in the exhaust gas and a second hydrocarbon feed method which lowers the feed amount of hydrocarbons from the hydrocarbon feed valve (15) and feeds fuel to the combustion chambers (2) during a second half of the expansion stroke or the exhaust stroke are selectively used.

Abstract translation: 在内燃机中，在发动机排气通路内配置有碳氢化合物供给阀15和排气净化催化剂13。 一种第一烃进料方法，其通过预定的进料间隔（＆Dgr; T）从烃进料阀（15）喷射烃，使得排气的空燃比降至所需的最小空燃比（X），从而 除去废气中所含的NOx和第二烃进料方法，其降低来自烃供给阀（15）的烃的进料量，并且在膨胀冲程或排气的后半期将燃料供给到燃烧室（2） 选择性地使用中风。

公开(公告)号：US08650863B2

公开(公告)日：2014-02-18

申请号：US12677249

申请日：2009-03-31

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

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

IPC: F01N3/00

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

Abstract: 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.

Abstract translation: 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：US20140030160A1

公开(公告)日：2014-01-30

申请号：US13375674

申请日：2011-04-15

Applicant: Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

Inventor： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kazuhiro Umemoto

IPC: B01D53/94

CPC classification number: B01D53/9431 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/206 ,  F01N2240/30 ,  F01N2510/06 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2900/1602 ,  F01N2900/1614 ,  Y02A50/2344

Abstract: In an internal combustion engine, 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, the amplitude of change of the concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to become within a predetermined range of amplitude by control of the injection amount of hydrocarbons from the hydrocarbon feed valve (15), the concentration of hydrocarbons flowing into the exhaust purification catalyst (13) is made to vibrate by a predetermined range of period by control of the injection period of hydrocarbons from the hydrocarbon feed valve (15), and thereby the NOx contained in the exhaust gas and the NOx stored in the exhaust purification catalyst (13) are reduced.

Abstract translation: 在内燃机中，配置有发动机排气通路内部的烃供给阀（15）和排气净化催化剂（13）。 在发动机运转时，流入排气净化催化剂（13）的碳氢化合物浓度的变化幅度通过控制来自碳氢化合物供给阀的烃的喷射量而变为预定的振幅范围（ 15），通过控制来自烃供给阀（15）的烃的喷射时间，使流入排气净化催化剂（13）的碳氢化合物的浓度振动规定的期间，由此，含有 废气和存储在排气净化催化剂（13）中的NOx减少。