公开(公告)号：US08257471B2

公开(公告)日：2012-09-04

申请号：US12531890

申请日：2008-03-26

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

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

IPC分类号： B01D53/28 ,  B01D53/56

CPC分类号： F01N3/0807 ,  B01D53/02 ,  B01D53/261 ,  B01D53/9481 ,  B01D2253/108 ,  B01D2255/20738 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2258/012 ,  B01J20/186 ,  F01N13/009 ,  F01N2570/14 ,  F01N2570/22 ,  Y02A50/2344 ,  Y02T10/20

摘要： A moisture adsorbing device 1 comprising a type Y zeolite, and an NOx adsorbing device 2 being put in place on an exhaust-gas downstream side of the moisture adsorbing device 1, and comprising a zeolite that includes a transition metal ion in the cation exchange sites are included. In NOx adsorbing apparatuses, since the less the moisture content in exhaust gases is the more the NOx adsorbing capability improves, the NO adsorbing capability in low-temperature region is improved especially by means of the combination with a moisture adsorbing device that comprises a type Y zeolite whose Al2O3 proportion is great and whose moisture adsorbing amount is great compared with the other zeolites.

摘要翻译： 包含Y型沸石的吸湿装置1和在吸湿装置1的排气下游侧配置的NOx吸附装置2，在阳离子交换部中含有过渡金属离子的沸石 包括在内。 在NOx吸附装置中，由于排气中的含水量越少，NOx吸附能力提高越多，所以特别是通过与含有Y型水分吸附装置的水分吸附装置的组合，能够提高低温区域的NO吸附能力 沸石的Al2O3比例大，吸水量大于其他沸石。

公开(公告)号：US20100307141A1

公开(公告)日：2010-12-09

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： F01N9/00

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：US20100205939A1

公开(公告)日：2010-08-19

申请号：US12599537

申请日：2008-04-28

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： F01N11/00 ,  F01N9/00 ,  F01N3/10 ,  F02D41/00

CPC分类号： F01N11/007 ,  F01N3/0238 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/0878 ,  F01N3/0885 ,  F01N3/2013 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2290/06 ,  F01N2560/025 ,  F02D41/0275 ,  F02D41/065 ,  F02D41/1439 ,  F02D41/1454 ,  Y02T10/26 ,  Y02T10/47

摘要： A main exhaust passage 42 and a first bypass passage 46 bypassing the main exhaust passage 42 are provided. An absorbent 52 having a function of absorbing HC components and NOx components contained in exhaust gas is provided in the first bypass passage 46. An underfloor catalyst 56 including a catalyst with an electric heater (EHC) 58 is provided in a main exhaust passage 42 on a downstream side of a downstream connecting portion 48b in a first bypass passage 46. A second bypass passage 62 that provides communication between the main exhaust passage 42 downstream of the underfloor catalyst 56 and the first bypass passage 46 upstream of the absorbent 52 is provided. A first exhaust switching valve 50 is provided in an upstream connecting portion 48a, and a second exhaust switching valve 68 is provided in a main exhaust passage side connecting portion 64a. A pump 66 is provided in the middle of the second bypass passage 62.

摘要翻译： 主排气通道42和旁通主排气通道42的第一旁通通道46设置。 具有吸收废气中的HC成分和NOx成分的功能的吸收剂52设置在第一旁路通路46中。具有电加热器（EHC）58的催化剂的地板下催化剂56设置在主排气通路42中， 在第一旁路通路46中的下游连接部分48b的下游侧。提供了在底板催化剂56下游的主排气通道42和吸收剂52上游的第一旁通通道46之间提供连通的第二旁通通道62。 第一排气切换阀50设置在上游连接部48a中，第二排气切换阀68设置在主排气通路侧连接部64a中。 泵66设置在第二旁通通道62的中间。

公开(公告)号：US20100132340A1

公开(公告)日：2010-06-03

申请号：US12530237

申请日：2008-03-10

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

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

IPC分类号： F01N3/00 ,  F01N3/10

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。

公开(公告)号：US20100115919A1

公开(公告)日：2010-05-13

申请号：US12594865

申请日：2008-03-21

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： F01N3/00 ,  F01N9/00

CPC分类号： F01N11/00 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2257/404 ,  F01N3/0807 ,  F01N3/18 ,  F01N3/20 ,  F01N2570/14 ,  Y02A50/2344 ,  Y02T10/20 ,  Y02T10/47

摘要： The present invention relates to an exhaust emission control device having an NOx adsorbent, and makes it possible to judge whether the performance of the NOx adsorbent is degraded temporarily or permanently. The amounts of NOx and water adsorbed by the NOx adsorbent are measured during an actual operation of an internal combustion engine. A reference line indicating the correlation between a preselected water adsorption amount and NOx adsorption amount is then referenced to determine a reference value y0 of the NOx adsorption amount that corresponds to a measured value x1 of the water adsorption amount. Next, a measured value y1 of the NOx adsorption amount is compared against the reference value y0 to output a signal in which the result of the comparison is reflected.

摘要翻译： 本发明涉及一种具有NOx吸附剂的废气排放控制装置，并且能够判断NOx吸附剂的性能是否暂时或永久地劣化。 在内燃机的实际操作期间，测量NOx吸附剂吸附的NOx和水的量。 然后参考表示预选水吸附量与NOx吸附量之间的相关性的参考线，以确定对应于水吸附量的测量值x1的NOx吸附量的参考值y 0。 接下来，将NOx吸附量的测量值y1与参考值y0进行比较，以输出反映比较结果的信号。

公开(公告)号：US20050235967A1

公开(公告)日：2005-10-27

申请号：US11111826

申请日：2005-04-22

申请人： Takaaki Itou ,  Koichi Hoshi ,  Kouichi Oda ,  Minoru Honda ,  Hideki Suzuki ,  Toshiki Annoura ,  Masahiro Mochizuki ,  Futaba Kanehira

发明人： Takaaki Itou ,  Koichi Hoshi ,  Kouichi Oda ,  Minoru Honda ,  Hideki Suzuki ,  Toshiki Annoura ,  Masahiro Mochizuki ,  Futaba Kanehira

IPC分类号： F02M33/00 ,  F02M33/02 ,  F02M35/10

CPC分类号： F02M35/10281 ,  F02M33/02 ,  F02M35/02 ,  F02M35/10052 ,  F02M35/112

摘要： An evaporative fuel adsorbent 32, which adsorbs evaporative fuel, is positioned substantially parallel to a sidewall surface 30 of a surge tank 22. A retention member 34 is positioned between the sidewall surface 22 and evaporative fuel adsorbent 32 to prevent oil, which runs down on the sidewall surface 22, from adhering to the evaporative fuel adsorbent 32. The evaporative fuel adsorbent 32 is mounted on the sidewall surface 30 of the surge tank 22 via the retention member 34.

摘要翻译： 吸附蒸发燃料的蒸发燃料吸附剂32基本平行于稳压罐22的侧壁表面30定位。 保持构件34位于侧壁表面22和蒸发燃料吸附剂32之间，以防止在侧壁表面22上向下流动的油粘附到蒸发燃料吸附剂32上。 蒸发燃料吸附剂32通过保持构件34安装在缓冲罐22的侧壁表面30上。

公开(公告)号：US20050188962A1

公开(公告)日：2005-09-01

申请号：US11067507

申请日：2005-02-25

申请人： Kouichi Oda ,  Minoru Honda ,  Yuushi Matsushita ,  Koichi Hoshi ,  Takaaki Itou ,  Toshiki Annoura ,  Hideki Suzuki ,  Futaba Kanehira ,  Masahiro Mochizuki

发明人： Kouichi Oda ,  Minoru Honda ,  Yuushi Matsushita ,  Koichi Hoshi ,  Takaaki Itou ,  Toshiki Annoura ,  Hideki Suzuki ,  Futaba Kanehira ,  Masahiro Mochizuki

IPC分类号： F01M13/00 ,  F02M25/08 ,  F02M33/00 ,  F02M35/024 ,  F02M35/10

CPC分类号： F02M25/08 ,  F02M35/024

摘要： A fuel vapor adsorbing device (10, 60, 70, 70′, 80) for adsorbing residual fuel vapors that remain in an intake conduit (1, 2, 3, 4) of an induction system of an internal combustion engine when the internal combustion engine is stopped may include an adsorbing member (40, 40′) that is constructed to adsorb the residual fuel vapors and is disposed along an inner wall surface of the intake conduit. The adsorbing member is arranged and constructed to form a supplemental intake path (T, T′, T′″) between the adsorbing member and the inner wall surface of the intake conduit, so that intake air of the engine can flow through the supplemental intake path.

摘要翻译： 一种燃料蒸气吸附装置（10,60,70,70'，80），用于吸收残留在内燃机的导入系统的进气导管（1,2,3,4）内的燃料蒸汽，当内燃机 发动机停止可以包括吸附构件（40,40'），该吸附构件被构造成吸附剩余的燃料蒸气并沿着进气导管的内壁表面设置。 吸附构件被布置和构造成在吸附构件和进气导管的内壁表面之间形成补充进气路径（T，T'，T“'），使得发动机的进气可以流过补充 进气道。

公开(公告)号：US06499294B1

公开(公告)日：2002-12-31

申请号：US09399287

申请日：1999-09-17

申请人： Kenji Katoh ,  Takaaki Itou ,  Hiroshi Tanaka ,  Shuichi Kubo ,  Yoshiyuki Mandokoro ,  Masahiro Taki

发明人： Kenji Katoh ,  Takaaki Itou ,  Hiroshi Tanaka ,  Shuichi Kubo ,  Yoshiyuki Mandokoro ,  Masahiro Taki

IPC分类号： F01N310

CPC分类号： F01N3/0864 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2250/12 ,  F01N2510/00 ,  F01N2510/06 ,  F01N2570/16 ,  F02D41/0275 ,  Y02T10/22 ,  Y02T10/24

摘要： A converter containing a NOx absorbing and reducing catalyst is disposed in the exhaust passage of an internal combustion engine. The upstream half portion (portion of the inlet side) of the substrate of the NOx absorbing and reducing catalyst in the converter carries the oxygen storage component that absorbs oxygen in the exhaust gas when the air-fuel ratio of the exhaust gas is lean and releases the absorbed oxygen when the air-fuel ratio of the exhaust gas flowing in is rich in addition to carrying the NOx absorbing and reducing catalyst. After NOx is absorbed by the NOx absorbing and reducing catalyst as a result of operating the engine at a lean air-fuel ratio, the engine is operated at a rich air-fuel ratio, so that NOx is released from the NOx absorbing and reducing catalyst and is purified by reduction. Here, oxygen is released from the oxygen storage component carried by the upstream half portion of the substrate and is reacted with the H2 and CO components in the exhaust gas, so that the temperature of the NOx absorbing and reducing catalyst is raised within short periods of time due to the heat of reaction. Therefore, the catalyst exhibits increased activity and the NOx absorbing and reducing catalyst exhibits improved NOx purification capability.

摘要翻译： 含有NOx吸收和还原催化剂的转化器设置在内燃机的排气通道中。 转换器中的NOx吸收还原催化剂的基板的上游半部（入口侧的部分）在废气的空燃比稀的时候携带吸收废气中的氧的储氧成分，释放 除了携带NOx吸收还原催化剂之外，当排出的废气的空燃比富含时，吸收的氧也富含。 由于作为发动机以稀薄的空燃比运转，NO x吸收还原催化剂吸收了NOx之后，发动机的空燃比浓度较高，使NO x从NOx吸收还原催化剂 并通过还原进行纯化。 这里，从由基板的上游半部分承载的储氧成分中释放出氧，并与废气中的H 2和CO成分反应，使NOx吸收还原催化剂的温度在短时间内升高 时间由于反应的热量。 因此，催化剂表现出增加的活性，NOx吸收和还原催化剂表现出提高的NOx净化能力。

公开(公告)号：US6133185A

公开(公告)日：2000-10-17

申请号：US744814

申请日：1996-11-06

申请人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Naoto Suzuki ,  Takehisa Yaegashi ,  Takaaki Kanazawa ,  Takahiro Hayashi ,  Koji Yokota ,  Yasutaka Nagai

发明人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Naoto Suzuki ,  Takehisa Yaegashi ,  Takaaki Kanazawa ,  Takahiro Hayashi ,  Koji Yokota ,  Yasutaka Nagai

IPC分类号： B01D53/94 ,  F01N3/08 ,  F02B1/04 ,  F02D41/02 ,  B01J29/06

CPC分类号： F01N3/10 ,  B01D53/9418 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/108 ,  B01D2255/1021 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/911 ,  B01D53/9477 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2370/04 ,  F01N2570/14 ,  F02B1/04 ,  F02D41/0275 ,  Y02T10/24

摘要： An exhaust gas purifying catalyst, for reducing nitrogen oxides and ammonia in an exhaust gas of an internal combustion engine, in an oxidizing atmosphere, is provided. The exhaust gas purifying catalyst comprises a first catalyst having zeolite carrying platinum and copper thereon. Preferably, the exhaust gas purifying catalyst further comprises a second catalyst having zeolite carrying copper thereon. Preferably, the second catalyst is arranged upstream of the first catalyst, with respect to the exhaust gas flow.

摘要翻译： 提供一种用于在氧化气氛中还原内燃机的废气中的氮氧化物和氨的废气净化催化剂。 废气净化催化剂包括具有在其上载有铂和铜的沸石的第一催化剂。 优选地，废气净化催化剂还包含具有在其上载有铜的沸石的第二催化剂。 优选地，第二催化剂相对于废气流布置在第一催化剂的上游。

公开(公告)号：US6109024A

公开(公告)日：2000-08-29

申请号：US75358

申请日：1998-05-08

申请人： Yukio Kinugasa ,  Takaaki Itou ,  Koichi Takeuchi

发明人： Yukio Kinugasa ,  Takaaki Itou ,  Koichi Takeuchi

IPC分类号： F01N3/08 ,  B01D53/86 ,  B01D53/94 ,  F01N3/24 ,  F01N3/28 ,  F01N13/02 ,  F01N13/04 ,  F02B75/12 ,  F02D41/02 ,  F02D41/40 ,  F01N3/00

CPC分类号： F01N3/0842 ,  F01N13/009 ,  F01N13/011 ,  F01N3/101 ,  F02D41/0275 ,  F02D41/405 ,  F01N2900/0418 ,  F02B2075/125 ,  F02D2041/389 ,  Y02T10/123 ,  Y02T10/22 ,  Y02T10/44

摘要： In an exhaust gas purification device, a three-way catalyst, an NO.sub.x absorbing-reducing catalyst and an NH.sub.3 adsorbing-denitrating catalyst are disposed in an exhaust gas passage of the internal combustion engine. The engine is provided with direct cylinder injection valves which inject fuel directly into the respective cylinders. A control circuit controls the amount of fuel injected from the injection valve so that the air-fuel ratio of the combustion in the cylinders becomes a lean air-fuel ratio during the normal operation of the engine. Therefore, a lean air-fuel ratio exhaust gas is discharged from the cylinders during the normal operation and NO.sub.x, in the exhaust gas is absorbed by the NO.sub.x absorbing-reducing catalyst. When the amount of NO.sub.x absorbed in the NO.sub.x absorbing-reducing catalyst increases to a predetermined level, the control circuit performs an additional fuel injection during the expansion stroke or exhaust stroke of cylinders in order to adjust the air-fuel ratio of the exhaust gas leaving the cylinders to a rich air-fuel ratio. The rich air-fuel ratio exhaust gas leaving the cylinders flows into the three-way catalyst and NO.sub.x in the exhaust gas is converted into NH.sub.3 at the three-way catalyst. When the rich air-fuel ratio exhaust gas flows through the NO.sub.x absorbing-reducing catalyst, NO.sub.x is released from the NO.sub.x absorbing-reducing catalyst and is reduced to N.sub.2 by NH.sub.3 in the exhaust gas.

摘要翻译： 在排气净化装置中，在内燃机的废气通道中设置三元催化剂，NOx吸收还原催化剂和NH 3吸附脱硝催化剂。 发动机配有直接气缸喷射阀，其将燃料直接喷射到相应的气缸中。 控制电路控制从喷射阀喷射的燃料量，使得在发动机的正常运行期间气缸中的燃烧空燃比变为稀空燃比。 因此，在正常操作期间，从空气中排出贫空燃比废气，并且排气中的NOx被NOx吸收还原催化剂吸收。 当NOx吸收还原催化剂吸收的NOx的量增加到预定水平时，控制电路在气缸的膨胀冲程或排气冲程期间执行额外的燃料喷射，以便调节离开废气的空燃比 气缸以较高的空燃比。 离开气缸的富空燃比废气流入三元催化剂，废气中的NOx在三元催化剂下转化为NH3。 当富空燃比废气流过NOx吸收还原催化剂时，NOx从NOx吸收还原催化剂释放，并通过排气中的NH 3还原为N2。