公开(公告)号：US08468805B2

公开(公告)日：2013-06-25

申请号：US12739539

申请日：2008-09-30

申请人： Kazuhiro Wakao ,  Takaaki Itou ,  Keisuke Sano ,  Kimikazu Yoda

发明人： Kazuhiro Wakao ,  Takaaki Itou ,  Keisuke Sano ,  Kimikazu Yoda

IPC分类号： F01N3/08

CPC分类号： F01N3/0878 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/101 ,  F01N13/009 ,  F01N2240/18 ,  F01N2560/06 ,  F01N2570/22 ,  Y02T10/22

摘要： A moisture adsorbent (32) for adsorbing moisture in exhaust gas and an NOx adsorbent (34) for adsorbing NOx are disposed in a bypass passage (30) for bypassing an exhaust passage (16) of an internal combustion engine (10). When an adsorption operation to the NOx adsorbent (34) is executed, inflow of the exhaust gas to the bypass passage (30) is allowed until the moisture amount that flows into the water adsorbent (32) reaches an allowable moisture inflow amount. The allowable moisture inflow amount is determined based on a residual moisture amount before the starting of the adsorption operation in the moisture adsorbent (32). The residual moisture amount in the water adsorbent (32) can be determined based on the temperature of the moisture adsorbent (32) at the immediately preceding execution of the purge operation.

摘要翻译： 用于吸附废气中的水分的吸湿剂（32）和用于吸附NOx的NOx吸附剂（34）设置在用于绕过内燃机（10）的排气通道（16）的旁路通道（30）中。 当执行对NOx吸附剂（34）的吸附操作时，允许废气流入旁通通道（30），直到流入水吸附剂（32）的水分量达到允许的水分流入量。 基于水分吸附剂（32）中的吸附动作开始前的残留水分量来确定容许水分流入量。 水吸附剂（32）中的残留水分量可以基于在先前执行清洗操作时的水分吸附剂（32）的温度来确定。

公开(公告)号：US20110047987A1

公开(公告)日：2011-03-03

申请号：US12990680

申请日：2009-03-12

申请人： Kimikazu Yoda ,  Takaaki Itou ,  Keisuke Sano ,  Kazuhiro Wakao

发明人： Kimikazu Yoda ,  Takaaki Itou ,  Keisuke Sano ,  Kazuhiro Wakao

IPC分类号： F01N9/00

CPC分类号： F01N3/0814 ,  F01N3/0878 ,  F01N3/0885 ,  F01N11/002 ,  F01N2410/00 ,  F01N2550/03 ,  Y02T10/47

摘要： An exhaust emission control system of an internal combustion engine includes: a bypass passage (22) provided in an exhaust passage (14) of the engine and arranged to bypass a main passage (16) as a part of the exhaust passage, a NOx adsorbent (28) provided in the bypass passage and adapted to adsorb at least NOx as one of components contained in exhaust gas, a channel switching device (30) that switches a channel of the exhaust gas between the main passage and the bypass passage, an adsorption control device (50) that controls the channel switching device, based on operating conditions of the engine, so as to cause the exhaust gas to flow through the bypass passage, and an adsorbing capability determining device (50) that determines, when the adsorbing capability of the NOx adsorbent degrades, whether the degradation in the adsorbing capability is a surmountable degradation from which the NOx adsorbent can recover, or an insurmountable degradation from which the NOx adsorbent cannot recover.

摘要翻译： 内燃机的废气排放控制系统包括：旁通通路（22），设置在发动机的排气通路（14）中，并且设置成旁路作为排气通路的一部分的主通路（16），NOx吸附剂 （28），其设置在所述旁通通路内，并且至少吸附作为废气中所含的成分之一的NOx;流路切换装置（30），其在所述主通路与旁通通路之间切换排气的通道，吸附 控制装置（50），其基于发动机的运转条件控制所述通道切换装置，以使所述排气流过所述旁通通路;吸附能力判定装置（50），其在吸附能力 的NOx吸附剂的劣化，NOx吸附剂能够回收的难以降解的吸附能力的劣化，NOx吸附剂不能再次的不可克服的劣化 盖。

公开(公告)号：US20100115927A1

公开(公告)日：2010-05-13

申请号：US12594987

申请日：2008-03-11

申请人： Keisuke Sano ,  Takaaki Itou ,  Kimikazu Yoda ,  Kazuhiro Wakao

发明人： Keisuke Sano ,  Takaaki Itou ,  Kimikazu Yoda ,  Kazuhiro Wakao

IPC分类号： F02D43/00 ,  F01N3/10

CPC分类号： B01D53/9481 ,  B01D53/0462 ,  B01D2255/91 ,  B01D2255/912 ,  B01D2257/702 ,  F01N3/0807 ,  F01N3/2013 ,  F01N3/32 ,  F01N9/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/16 ,  F01N2240/36 ,  F01N2410/04 ,  Y02T10/26 ,  Y02T10/47

摘要： An object of the present invention is to provide an exhaust gas purifying apparatus for an internal combustion engine which can successfully desorb predetermined components contained in exhaust gas from adsorption means for adsorbing the components and can successfully purify the desorbed components, even during the stop of the internal combustion engine. A main exhaust passage 42 and a bypass passage 46 bypassing the main exhaust passage 42 are provided. An exhaust switching valve 50 that is capable of switching a flow target into the exhaust gas flows between the main exhaust passage 42 and the bypass passage 46 is provided. An adsorbent 52 for adsorbing the predetermined components contained in the exhaust gas is provided in the bypass passage 46. An underfloor catalyst 56 including a catalyst with an electric heater (EHC) 58 is provided at a downstream side of the bypass passage 46 in the main exhaust passage 42. A pump 68 and a heater 70 are provided in an air supply passage 66 which branches from the bypass passage 46 at an upstream portion of the adsorbent 52.

摘要翻译： 本发明的目的是提供一种用于内燃机的排气净化装置，其能够成功地将吸附装置中排出的废气中的预定成分解吸，从而吸附成分，即使在停止时，也能够成功地净化解吸附的成分 内燃机。 主排气通道42和绕过主排气通道42的旁通通道46设置。 提供能够将流动目标切换到废气中的排气切换阀50在主排气通路42和旁通通路46之间流动。 用于吸附废气中所含的预定成分的吸附剂52设置在旁通通道46中。包括具有电加热器（EHC）58的催化剂的地板下催化剂56设置在主要旁路通道46的下游侧 排气通道42.在吸附剂52的上游部分从旁通通道46分支的空气供应通道66中设置有泵68和加热器70。

公开(公告)号：US06378298B2

公开(公告)日：2002-04-30

申请号：US09759316

申请日：2001-01-16

申请人： Kenji Harima ,  Takaaki Itou ,  Hiroki Ichinose ,  Kenji Katoh ,  Hiroshi Tanaka ,  Keiji Itou

发明人： Kenji Harima ,  Takaaki Itou ,  Hiroki Ichinose ,  Kenji Katoh ,  Hiroshi Tanaka ,  Keiji Itou

IPC分类号： F01N300

CPC分类号： F01N3/2046 ,  F01N3/05 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/0885 ,  F01N3/2006 ,  F01N3/22 ,  F01N3/30 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2240/02 ,  F01N2430/06 ,  F01N2570/04 ,  F01N2570/12 ,  F01N2570/14 ,  Y02A50/2344 ,  Y02T10/26

摘要： An exhaust purifying apparatus for an internal combustion engine includes a catalyst that purifies exhaust gas from the engine, a first passage that allows exhaust gas to flow from the engine to the catalyst, and a second passage that allows exhaust gas to flow from the engine to the catalyst. The first passage includes an accelerated cooling portion whose cross section is designed so that a relatively large quantity of heat is released from the exhaust gas in the first passage, and the second passage has a cross section designed so that a relatively small quantity of heat is released from the exhaust gas in the second passage. The apparatus further includes a flow amount controller that controls amounts of exhaust gas flowing through the first and second passages, such that the amount of exhaust gas flow through the first passage is made larger than that through the second passage when the temperature of exhaust gas emitted from the engine is to be lowered by a relatively large degree before reaching the catalyst, and such that the amount of exhaust gas flow through the second passage is made larger than that through the first passage when the temperature of exhaust gas emitted from the engine is to be lowered by a relatively small degree before reaching the catalyst.

摘要翻译： 用于内燃机的排气净化装置包括净化来自发动机的废气的催化剂，允许废气从发动机流到催化剂的第一通道和允许废气从发动机流向的第二通道 催化剂。 第一通道包括加速冷却部分，其横截面设计成使得相对较大量的热量从第一通道中的废气释放，并且第二通道具有设计成使相对少量的热量 从第二通道中的废气释放。 该装置还包括流量控制器，其控制流过第一和第二通道的废气量，使得当排放的废气温度排出时，通过第一通道的废气流量大于通过第二通道的排气量 在到达催化剂之前，发动机要相对较大地降低，并且当从发动机排出的废气的温度为从发动机排出的温度为 在达到催化剂之前要相对较小地降低。

公开(公告)号：US5746052A

公开(公告)日：1998-05-05

申请号：US525892

申请日：1995-09-08

申请人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Takehisa Yaegashi ,  Toshifumi Takaoka

发明人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Takehisa Yaegashi ,  Toshifumi Takaoka

IPC分类号： B01D53/94 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N13/02 ,  F01N13/04 ,  F02D41/04

CPC分类号： B01D53/9454 ,  B01D53/9431 ,  B01D53/9477 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/011 ,  F01N3/20 ,  F01N3/206 ,  F01N2240/25 ,  F01N2570/14 ,  F01N2610/02 ,  Y02T10/22

摘要： In the present invention, the exhaust gas from the engine is divided into a first and a second branch exhaust passages after it passes through a three-way reducing and oxidizing catalyst, and the two branch exhaust passages merge into an exhaust gas outlet passage. In the first branch exhaust passage, an oxidizing catalyst is disposed, and in the exhaust gas outlet passage, a denitrating and oxidizing catalyst is disposed. NO.sub.x in the exhaust gas from the engine is all converted to N.sub.2 and NH.sub.3 by the three-way reducing and oxidizing catalyst and a part of the NH.sub.3 generated by the three-way catalyst flows into the first branch exhaust passage and is converted to NO.sub.x again by the oxidizing catalyst. The amount of NO.sub.x produced by the oxidizing catalyst and the amount of NO.sub.x flowing through the second branch exhaust passage is determined by the flow distribution ratio of the first and the second branch exhaust passages. In this invention, the flow ratio is determined in such a manner that the amount of the NO.sub.x produced by the oxidizing catalyst and the amount of the NH.sub.3 passing through the second branch exhaust passage are stoichiometric to produce N.sub.2 and H.sub.2 O. Therefore, when these exhaust gases flow into the denitrating and oxidizing catalyst after they mix with each other in the exhaust gas outlet passage, all the NO.sub.x and the NH.sub.3 are converted to N.sub.2 and H.sub.2 O by the denitrating and oxidizing catalyst without producing any surplus NO.sub.x or NH.sub.3.

摘要翻译： 在本发明中，来自发动机的废气在通过三通还原氧化催化剂后被分成第一和第二分支排气通道，两个分支排气通道合流到废气出口通道中。 在第一分支排气通道中设置氧化催化剂，并且在排气出口通道中设置脱硝和氧化催化剂。 来自发动机的废气中的NOx通过三元还原氧化催化剂全部转化为N 2和NH 3，并且由三元催化剂产生的一部分NH 3流入第一分支排气通道并再次转化为NOx 通过氧化催化剂。 由氧化催化剂产生的NOx的量和流过第二分支排气通道的NOx的量由第一和第二分支排气通道的流量分配比确定。 在本发明中，流量比以如下方式确定：氧化催化剂产生的NOx的量和通过第二分支排气通道的NH 3的量是化学计量的，以产生N 2和H 2 O. 因此，当这些废气在废气出口通道中彼此混合后流入脱硝和氧化催化剂时，所有的NOx和NH 3都被脱硝和氧化催化剂转化为N 2和H 2 O，而不产生任何剩余的NOx或 NH3。

公开(公告)号：US4841940A

公开(公告)日：1989-06-27

申请号：US178373

申请日：1988-04-06

申请人： Kouji Uranishi ,  Takaaki Itou

发明人： Kouji Uranishi ,  Takaaki Itou

IPC分类号： F02D35/00 ,  F02D41/00 ,  F02M7/24 ,  F02M25/08

CPC分类号： F02M7/24 ,  F02D35/0076 ,  F02D41/0032 ,  F02D41/0042 ,  F02M25/08

摘要： An air-fuel ratio control device comprising an electric air bleed control valve which controls the amount of air fed into the fuel passage of the carburetor so that an air-fuel ratio becomes equal to the stoichiometric air-fuel ratio. The degree of opening of the air bleed control valve is increased as an electric current fed into the air bleed control valve is increased. Fuel vapor is fed into the intake passage from the canister. When the electric current fed into the air bleed control valve is increased and reaches a predetermined upper limit due to the supply of purge gas, the current fed into the air bleed control valve is instantaneously increased by a fixed amount.

摘要翻译： 一种空燃比控制装置，包括电气排气控制阀，其控制供给到化油器的燃料通道中的空气量，使得空燃比变得等于理论空燃比。 随着供给到排气控制阀的电流增加，排气控制阀的打开程度增加。 燃料蒸汽从罐进料到进气通道中。 当供给到排气控制阀的电流由于供给吹扫气体而增加并达到预定的上限时，供给到排气控制阀的电流立即增加固定量。

公开(公告)号：US4834050A

公开(公告)日：1989-05-30

申请号：US177288

申请日：1988-04-01

申请人： Kouji Uranishi ,  Takaaki Itou

发明人： Kouji Uranishi ,  Takaaki Itou

IPC分类号： F02D41/14 ,  F02D35/00 ,  F02D41/00 ,  F02D43/00 ,  F02M7/24 ,  F02M23/04 ,  F02M25/08

CPC分类号： F02D41/0042 ,  F02D35/0061

摘要： An air-fuel ratio control device comprising an electric air bleed control valve which controls the amount of air fed into the fuel passage of the carburetor so that an air-fuel ratio becomes equal to the stoichiometric air-fuel ratio. The degree of opening of the air bleed control valve is increased as an electric current fed into the air bleed control valve is increased. Fuel vapor is fed into the intake passage from the canister. An auxiliary air is also fed into the intake passage via an electric auxiliary air bleed control valve. When the supply of fuel vapor to the intake passage is started, if the electric current fed into the air bleed control valve increases and reaches the upper limit, the auxiliary air bleed control valve is opened. As a result, the electric current fed into the air bleed control valve is lowered and can move up and down so that an air-fuel ratio becomes equal to the stoichiometric air-fuel ratio.

摘要翻译： 一种空燃比控制装置，包括电气排气控制阀，其控制供给到化油器的燃料通道中的空气量，使得空燃比变得等于理论空燃比。 随着供给到排气控制阀的电流增加，排气控制阀的打开程度增加。 燃料蒸汽从罐进料到进气通道中。 辅助空气也通过电动辅助排气控制阀进入进气通道。 当开始向进气通道供应燃料蒸汽时，如果供给到排气控制阀的电流增加并达到上限，则辅助排气控制阀打开。 结果，供给到排气控制阀的电流降低，能够上下移动，使得空燃比变得等于理论空燃比。

公开(公告)号：US4434111A

公开(公告)日：1984-02-28

申请号：US411281

申请日：1982-08-25

申请人： Mitsuyoshi Teramura ,  Masatami Takimoto ,  Norihiko Nakamura ,  Takaaki Itou ,  Takashi Katou ,  Takeru Yasuda ,  Sunao Kitamura

发明人： Mitsuyoshi Teramura ,  Masatami Takimoto ,  Norihiko Nakamura ,  Takaaki Itou ,  Takashi Katou ,  Takeru Yasuda ,  Sunao Kitamura

IPC分类号： F02M7/17 ,  F02M7/24 ,  F02M7/28 ,  F02M9/06

CPC分类号： F02M7/28 ,  F02M7/17 ,  Y10S261/74

摘要： A variable venturi-type carburetor comprising a vacuum chamber, connected to a venturi portion of the carburetor, and a suction piston actuated in response to a change in vacuum in the vacuum chamber. A fuel passage is formed in the carburetor and is open to the intake passage of the carburetor. The suction piston has a needle extending through the fuel passage. An air bleed passage is connected to the fuel passage. When the level of vacuum in the intake passage becomes smaller than a predetermined level, the amount of air fed into the fuel passage from the air bleed passage is reduced, and the vacuum chamber is caused to be open to the atmosphere.

摘要翻译： 包括连接到化油器的文丘里部分的真空室的可变文丘里型化油器和响应于真空室中的真空变化而致动的抽吸活塞。 燃料通道形成在化油器中并且通向化油器的进气通道。 吸入活塞具有延伸穿过燃料通道的针。 排气通道连接到燃料通道。 当进气通道中的真空度变得小于预定水平时，从排气通道进入燃料通道的空气量减少，使真空室向大气敞开。

公开(公告)号：US4136139A

公开(公告)日：1979-01-23

申请号：US773935

申请日：1977-03-03

申请人： Norihiko Nakamura ,  Takaaki Itou ,  Kazuo Kikuchi

发明人： Norihiko Nakamura ,  Takaaki Itou ,  Kazuo Kikuchi

IPC分类号： F02M7/17 ,  F02M19/03 ,  F02M19/06 ,  F02M7/24

CPC分类号： F02M19/03 ,  F02M19/06 ,  F02M7/17 ,  Y10S261/75

摘要： Disclosed is a variable venturi type carburetor comprising a movable suction piston. The suction piston has a needle entering into a stationary jet. The needle and the jet defines an annular opening through which the fuel is injected into the intake passage formed in the carburetor. The jet is connected to a fuel reservoir via a fuel supply passage. The fuel supply passage is connected to the atmosphere via an air bleed passage. A bubble generating pipe made of sintered metal is disposed in the fuel supply passage at a position in which the air bleed passage opens to the fuel supply passage for creating fine bubbles of air in the fuel.

公开(公告)号：US08516801B2

公开(公告)日：2013-08-27

申请号：US12530237

申请日：2008-03-10

申请人： Keisuke Sano ,  Takaaki Itou ,  Kimikazu Yoda ,  Kazuhiro Wakao

发明人： Keisuke Sano ,  Takaaki Itou ,  Kimikazu Yoda ,  Kazuhiro Wakao

IPC分类号： F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  B01D53/94

CPC分类号： B01D53/9495 ,  B01D2251/208 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/34 ,  F01N13/009 ,  F01N2410/00

摘要： An object of the present invention is to provide an exhaust gas purifying apparatus for an internal combustion engine which can properly purge at least NOx of unpurified components contained in exhaust gas while considering characteristics of NOx desorbed from an adsorbent. A bypass passage 18 bypassing a main exhaust passage 12 of the internal combustion engine 10 is provided. A HC/NOx adsorbent 22 having a function of adsorbing HC and NOx is provided in the bypass passage 18. A second underfloor catalyst 30 is provided downstream of the adsorbent 22. A purge passage 26 branching off from the bypass passage 18 while connecting to an intake passage is provided. An exhaust switching valve 20 and a purge control valve 28 are provided as a flow path switching means that is capable of switching a flow target into which the exhaust gas flows between the main exhaust passage 12 and the bypass passage 18. If the purging operations are executed, the intake purging operation is first executed. After that, the intake purging operation is switched to the exhaust purging operation at a timing existing after the purge of NOx is completed and at the time point at which the temperature of the adsorbent becomes stable.

摘要翻译： 本发明的目的是提供一种用于内燃机的废气净化装置，其能够考虑到从吸附剂脱附的NOx的特性，能够适当地净化废气中所含的未纯化成分的NOx。 设置有绕过内燃机10的主排气通路12的旁路通道18。 具有吸附HC和NOx的功能的HC / NOx吸附剂22设置在旁通通道18中。第二底板催化剂30设置在吸附剂22的下游。一个从旁路通道18分支的清洗通道26，同时连接到 提供进气通道。 设置排气切换阀20和排气控制阀28作为流路切换装置，其能够切换排气在主排气通路12和旁通通路18之间流动的流动目标。如果清洗操作是 首先执行进气清洗操作。 之后，在完成NOx的净化之后的时刻和吸附剂的温度稳定的时刻，进行排气操作切换到排气净化操作。