公开(公告)号：JP2011094482A

公开(公告)日：2011-05-12

申请号：JP2009246016

申请日：2009-10-27

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： SATO SHINYA ,  KAWADA YOSHIHIRO ,  HOSOYA MITSURU

IPC: F01N3/24 ,  F01N3/02 ,  F01N3/08 ,  F01N3/10

Abstract: PROBLEM TO BE SOLVED: To efficiently reduce NOx in exhaust gas over a wide temperature range up to a high temperature area from a low temperature area, by relatively abundantly securing an NOx adsorption quantity by an NOx adsorbent. SOLUTION: An oxidation catalyst 24 is arranged in an exhaust pipe 16 of a diesel engine 11. An NOx catalyst 27 is arranged in the exhaust pipe 16 on the exhaust gas downstream side of the oxidation catalyst 24, and an injection nozzle 29a of a liquid injection means 29 for injecting a urea-based liquid 29d toward the NOx catalyst 27, is inserted into the exhaust pipe 16 between the oxidation catalyst 24 and the NOx catalyst 27. A controller 34 controls the liquid injection means 29 based on detection output of an operation state detecting means 33 for detecting an operation state of the engine. A first NOx adsorbent 31 for adsorbing the NOx in the exhaust gas is arranged in the exhaust pipe 16 between the oxidation catalyst 24 and the injection nozzle 29a. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：通过相对大量地通过NOx吸附剂来确保NOx吸附量，能够在从低温区域到高温区域的宽温度范围内有效地还原废气中的NOx。 解决方案：在柴油发动机11的排气管16中设置有氧化催化剂24.在氧化催化剂24的排气下游侧的排气管16中配置有NOx催化剂27，喷射喷嘴29a 用于将尿素基液29d朝向NOx催化剂27注入的液体注入装置29被插入到氧化催化剂24和NOx催化剂27之间的排气管16中。控制器34基于检测来控制液体注入装置29 输出用于检测发动机的运行状态的运行状态检测装置33。 用于吸附废气中的NOx的第一NOx吸附剂31布置在氧化催化剂24和喷嘴29a之间的排气管16中。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009108787A

公开(公告)日：2009-05-21

申请号：JP2007282617

申请日：2007-10-31

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： KAWADA YOSHIHIRO ,  SATO SHINYA ,  HOSOYA MITSURU

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/02 ,  F01N3/28

CPC classification number: F01N3/2066 ,  B01D53/90 ,  B01D53/9459 ,  B01D2251/2067 ,  B01D2258/012 ,  B01D2258/014 ,  F01N3/0821 ,  F01N13/0097 ,  F01N2250/14 ,  F01N2570/18 ,  F01N2610/02 ,  Y02T10/24

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for exhaust treatment capable of effectively reducing and removing a specific ingredient contained in exhaust, by satisfactorily mixing the exhaust with a reducing agent added to the exhaust, while maintaining a pressure loss low, with a simple, compact and an inexpensive constitution.
SOLUTION: A metallic catalyst 20 is disposed on the upstream side of a urea SCR catalyst device 6 on the downstream side of an aqueous urea solution ejection nozzle 5A disposed in a connection part 12. The metallic catalyst 20 carries a urea SCR catalyst on a surface of a carrier of a metallic honeycomb structure. The metallic catalyst 20 is readily affected by the exhaust temperature and well follows changes in the exhaust temperature. Consequently, the temperature of the carrier increases in a short time upon reception of heat of the exhaust to accelerate hydrolysis of urea into ammonia and accelerate mixing of the exhaust with the reducing agent. As a result, efficiency of NOx reduction can be effectively heightened. Since the metallic catalyst 20 has the urea SCR catalyst deposited thereon, NOx contained in the exhaust can be removed even when the temperature is still low.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够有效地减少和除去排气中的特定成分的废气处理装置，通过令废气与添加到废气中的还原剂良好地混合，同时保持压力损失低，与 一个简单，紧凑和廉价的宪法。 解决方案：金属催化剂20设置在设置在连接部分12中的尿素水溶液喷射嘴5A的下游侧的尿素SCR催化剂装置6的上游侧。金属催化剂20携带尿素SCR催化剂 在金属蜂窝结构体的载体的表面上。 金属催化剂20容易受排气温度影响，并且很好地遵循排气温度的变化。 因此，在接收到排气热量后，载体的温度在短时间内增加，以促进尿素水解成氨并加速排气与还原剂的混合。 因此，可以有效提高NOx还原效率。 由于金属催化剂20具有沉积在其上的尿素SCR催化剂，所以即使当温度仍然低时也可以除去排气中所含的NOx。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008075620A

公开(公告)日：2008-04-03

申请号：JP2006258589

申请日：2006-09-25

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： SATO SHINYA ,  HOSOYA MITSURU

IPC: F01N3/24 ,  F01N3/02

Abstract: PROBLEM TO BE SOLVED: To protect a selective reduction type catalyst from high temperature exhaust gas during compulsive regeneration of a particulate filter.
SOLUTION: In the exhaust emission control device, the selective reduction type catalyst 5 is provided in an exhaust pipe 4, and urea water 11 is added as a reducing agent in an upstream side of the selective reduction type catalyst 5 to carry out reduction purification of NOx. The particulate filter 14 attached to an oxidation catalyst 13 in a front section is arranged in the exhaust pipe 4 upstream of an adding position (an opening position of an injection nozzle 6) for the urea water 11. A heat storage material 15 with a ventilation structure capable of storing heat of the exhaust gas 3 is arranged between the adding position for the urea water 11 and the selective reduction type catalyst 5. A fuel adding means (a fuel injector 20) is provided for adding fuel into the exhaust gas 3 in an upstream of the oxidation catalyst 13.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：在颗粒过滤器的强制再生期间，保护选择性还原型催化剂免受高温废气的影响。 解决方案：在废气排放控制装置中，选择还原型催化剂5设置在排气管4中，并且在选择还原型催化剂5的上游侧加入尿素水11作为还原剂，以进行 还原净化NOx。 附着在前部的氧化催化剂13的微粒过滤器14配置在排气管4的尿素水11的添加位置（喷射喷嘴6的开口位置）的上游。具有通气的蓄热材料15 在尿素水11的添加位置和选择还原型催化剂5之间配置能够存储废气3的结构的结构。燃料添加装置（燃料喷射器20）被设置用于将燃料添加到废气3中 氧化催化剂13的上游。版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008075610A

公开(公告)日：2008-04-03

申请号：JP2006258145

申请日：2006-09-23

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： HIRABAYASHI HIROSHI ,  HOSOYA MITSURU

IPC: F01N3/08 ,  F01N3/24 ,  F01N3/36

CPC classification number: Y02T10/24

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas treating device capable of efficiently conducting a removal treatment of NOx by effectively exercising NOx reduction action of a hydrocarbon selective reduction type NOx catalyst.
SOLUTION: In the exhaust gas treating device 30, an oxidation catalyst 40, an HC-SCR catalyst 50, a catalyzed diesel particulate filter 60 are provided in this order from an exhaust gas upstream side and a fuel addition device 70 capable of adding and supplying a fuel (HC) to exhaust gas is provided between the oxidation catalyst 40 and the HC-SCR catalyst 50. With this arrangement, NOx reduction action of the HC-SCR catalyst 50 is efficiently exercised and the exhaust quantity of NOx can be effectively reduced by adding and supplying the fuel to the exhaust gas containing NO
2 with oxidative effect of the oxidation catalyst 40.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 解决问题的方案：提供一种废气处理装置，其能够通过有效地进行烃选择还原型NOx催化剂的NOx还原作用而有效地进行NOx的除去处理。 解决方案：在排气处理装置30中，从废气上游侧依次设置氧化催化剂40，HC-SCR催化剂50，催化柴油微粒过滤器60，能够 在氧化催化剂40和HC-SCR催化剂50之间设置向废气中添加和供给燃料（HC）。由此，能够有效地进行HC-SCR催化剂50的NO x还原作用，NOx的排出量 通过向具有氧化催化剂40的氧化作用的含有NO 2 SBB的废气添加和供给燃料而有效地减少。（C）2008，JPO＆INPIT

公开(公告)号：JP2008075543A

公开(公告)日：2008-04-03

申请号：JP2006255634

申请日：2006-09-21

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： HOSOYA MITSURU ,  KAWADA YOSHIHIRO

IPC: F01N3/08 ,  B01D53/56 ,  B01D53/74 ,  B01D53/86 ,  B01D53/94 ,  F01N3/02 ,  F01N3/24 ,  F01N3/28 ,  F02D23/02 ,  F02D41/04 ,  F02D41/38 ,  F02D45/00

CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2257/406 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2892 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2610/02 ,  F02B29/0425 ,  F02B37/00 ,  F02D41/0245 ,  F02D41/025 ,  F02D41/1446 ,  F02D41/405 ,  Y02T10/24 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To effectively eliminate NOx in exhaust gas even when temperature of exhaust gas is relatively low.
SOLUTION: This exhaust emission control device is provided with a selective reduction type catalyst 21 provided in an exhaust pipe 16, a liquid injection nozzle 23 provided in an upstream side thereof, a liquid injection means 30 capable of injecting urea system liquid 32 via the liquid injection nozzle, a controller 44 controlling the same, and a mixer 26 mixing the liquid with exhaust gas. The device is provided with an ammonia conversion catalyst 54 provided in an exhaust gas downstream side of the selective reduction type catalyst, a particulate filter 51 provided in an upstream side of the liquid injection nozzle, an oxidation catalyst 53 provided in an upstream side thereof, and a temperature sensor 43 detecting temperature of the selective reduction type catalyst. A fuel injection device has a structure capable of injecting fuel into the cylinder after top dead center of the piston, and the controller controls the same to inject fuel into the cylinder after top dead center of the piston when temperature sensor detects that temperature of the selective reduction type catalyst is predetermined temperature or lower.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：即使废气温度相对较低，也能有效地消除废气中的NOx。 解决方案：该废气排放控制装置设置有设置在排气管16中的选择性还原型催化剂21，设置在排气管16的上游侧的液体喷射喷嘴23，能够喷射尿素系统液体32的液体喷射装置30 通过液体喷射喷嘴，控制其的控制器44以及将液体与废气混合的混合器26。 该装置设置有设置在选择还原型催化剂的排气下游侧的氨转化催化剂54，设置在液体喷嘴的上游侧的颗粒过滤器51，设置在其上游侧的氧化催化剂53， 以及检测选择还原型催化剂的温度的温度传感器43。 燃料喷射装置具有能够在活塞的上止点之后将燃料喷射到气缸中的结构，并且当温度传感器检测到选择性温度时，控制器控制其将燃料喷射到活塞的上止点之后的气缸中 还原型催化剂是预定温度或更低。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007182805A

公开(公告)日：2007-07-19

申请号：JP2006001404

申请日：2006-01-06

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： KAWADA YOSHIHIRO ,  SATO SHINYA ,  HOSOYA MITSURU

IPC: F01N3/24 ,  B01D53/94 ,  F01N3/08 ,  F01N3/28

CPC classification number: Y02A50/2322

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of positively decomposing urea water into ammonia to obtain an excellent NOx reducing effect from an exhaust temperature lower than the conventional one even in a vehicle of such an operating form that an operating state at a low exhaust temperature continues for a long time. SOLUTION: An injection port 14 of urea water 13 is arranged toward the lower reaches inside a chamber 12 upstream of a selective reduction type catalyst 10, and a heater 15 serving as a heating device 16 is disposed downstream thereof. An exhaust temperature detector 22 detecting the temperature of exhaust gas 7, and a heating device temperature detector 23 detecting the temperature of the heater 15 are provided, and a control device 24 outputs a control signal 16a for applying a current to the heater 15 to generate heat so that the actual heating device temperature based on a detection signal 23a from the heating device temperature detector 23 is an appropriate temperature under the condition that the actual exhaust temperature based on a detection signal 22a from the exhaust temperature detector 22 is about 200°C or less. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够将尿素水正分解为氨，从低于常规排气温度的排气温度获得优异的NOx还原效果的废气排放控制装置，即使在这样的操作形式的车辆中， 在低排气温度下的运行状态持续很长时间。 解决方案：尿素水13的注入口14在选择还原型催化剂10上游的腔室12内向下游设置，作为加热装置16的加热器15设置在其下游。 设置检测排气温度7的排气温度检测器22和检测加热器15的温度的加热装置温度检测部23，控制装置24输出用于向加热器15施加电流的控制信号16a， 使得基于来自加热装置温度检测器23的检测信号23a的实际加热装置温度在基于来自排气温度检测器22的检测信号22a的实际排气温度为约200℃的条件下为适当的温度 或更少。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007182804A

公开(公告)日：2007-07-19

申请号：JP2006001403

申请日：2006-01-06

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： KAWADA YOSHIHIRO ,  SATO SHINYA ,  HOSOYA MITSURU

IPC: F01N3/04 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24

CPC classification number: Y02A50/2322 ,  Y02C20/10

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of obtaining an excellent NOx reducing effect from an exhaust temperature lower than the conventional one by positively decomposing urea water into ammonia utilizing exhaust heat of an engine efficiently even in a vehicle of such an operating form that an operating state at a low exhaust temperature continues for a long time. SOLUTION: A urea water heating passage 14 of cylindrical space shape having an inflow port 14a and an outflow port 14b of urea water 13 is formed at the outer periphery of an exhaust pipe 9 upstream of a selective reduction type catalyst 10 to constitute a preheater 15 for heating urea water 13 with exhaust gas 7. A urea water supply line 18 is connected to the inflow port 14a of the preheater 15, and an addition nozzle 16 leading the heated urea water 13 into the exhaust pipe 9 upstream of the selective reduction type catalyst 10 is connected to the outflow port 14b of the preheater 15. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决问题：提供一种废气排放控制装置，其能够通过利用发动机的排气高效地将尿素水积极分解成氨，从而能够从低于常规排气温度的排气温度获得优异的NOx还原效果，即使在车辆 这种操作形式使得在低排气温度下的运行状态持续很长时间。 解决方案：在选择还原型催化剂10上游的排气管9的外周形成具有尿素水13的流入口14a和流出口14b的圆柱形空间形状的尿素水加热通道14，构成 用于用排气7加热尿素水13的预热器15.尿素水供应管线18连接到预热器15的流入口14a，并且加热喷嘴16将加热的尿​​素水13引导到排气管9的上游 选择还原型催化剂10连接到预热器15的流出口14b。版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007182803A

公开(公告)日：2007-07-19

申请号：JP2006001402

申请日：2006-01-06

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： KAWADA YOSHIHIRO ,  SATO SHINYA ,  HOSOYA MITSURU

IPC: F01N3/08 ,  B01D53/94

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of positively decomposing urea water into ammonia to obtain an excellent NOx reducing effect from an exhaust temperature lower than the conventional one even in a vehicle of such an operating form that an operating state at a low exhaust temperature continues for a long time. SOLUTION: An ultrasonic irradiation tank 14 having an inflow port 14a and an outflow port 14b of urea water 12 is disposed as an ultrasonic irradiation means 13 for irradiating urea water 12 with ultrasonic wave. A urea water supply line 15 is connected to the inflow port 14a of the ultrasonic irradiation tank 14 serving as the ultrasonic irradiation means 13, and an addition nozzle 16 leading the urea water 12 irradiated with ultrasonic wave, into an exhaust pipe 9 upstream of an selective reduction type catalyst 10 is connected to the outflow port 14b of the ultrasonic irradiation tank 14. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够将尿素水正分解为氨，从低于常规排气温度的排气温度获得优异的NOx还原效果的废气排放控制装置，即使在这样的操作形式的车辆中， 在低排气温度下的运行状态持续很长时间。 解决方案：具有尿素水12的流入口14a和流出口14b的超声波照射容器14被配置为用于用超声波照射尿素水12的超声波照射装置13。 尿素水供给管线15连接到超声波照射装置13的超声波照射容器14的流入口14a和将超声波照射的尿素水12引导到上游侧的排气管9的附加喷嘴16。 选择还原型催化剂10连接到超声波照射容器14的流出口14b。版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006266192A

公开(公告)日：2006-10-05

申请号：JP2005087510

申请日：2005-03-25

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： HOSOYA MITSURU ,  SHIMODA MASATOSHI

IPC: F01N3/08 ,  B01D46/42 ,  B01D53/94 ,  F01N3/02 ,  F01N3/24 ,  F01N3/28 ,  F02D41/38

Abstract: PROBLEM TO BE SOLVED: To provide a comparatively simple structured exhaust emission control device for an engine, reducing NOx and simultaneously collecting fine particles in exhaust gas. SOLUTION: This exhaust emission control device is provided with a selective reduction type catalyst 24 arranged in an exhaust pipe 16 and a liquid injection nozzle 29 ejecting urea-based liquid 32 toward the catalyst. A diesel particulate filter 51 is arranged in the exhaust pipe on a farther exhaust gas downstream side of the selective reduction type catalyst, and constituted to increase and reduce hydrocarbon supplied to the exhaust pipe. A first oxidation catalyst 52 is arranged in the exhaust pipe on a farther exhaust gas downstream side of the selective reduction type catalyst and on a farther exhaust gas upstream side of the filter. A second oxidation catalyst 53 is arranged in the exhaust pipe 16 on a farther exhaust gas upstream side of the liquid injection nozzle 29. A single convertor 27 is arranged in the exhaust pipe 16, and the selective reduction type catalyst 24, the first oxidation catalyst 52, and the diesel particulate filter 51 are stored in the convertor 27. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种用于发动机的比较简单的结构化废气排放控制装置，减少NOx并同时收集废气中的细颗粒。 解决方案：该废气排放控制装置设置有布置在排气管16中的选择性还原型催化剂24和朝向催化剂喷射脲基液体32的液体喷射喷嘴29。 柴油机微粒过滤器51布置在选择还原型催化剂的排气管下游侧的排气管中，并且构成为增加和减少供应到排气管的碳氢化合物。 排气管中的第一氧化催化剂52配置在选择还原型催化剂的更远的废气下游侧以及过滤器的排气上游侧的另一侧。 第二氧化催化剂53布置在排液管16中，在液体注入喷嘴29的更远的废气上游侧。排气管16中设置单个转换器27，选择还原型催化剂24，第一氧化催化剂 52，柴油微粒过滤器51储存在转换器27中。（C）版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006258058A

公开(公告)日：2006-09-28

申请号：JP2005079514

申请日：2005-03-18

Applicant: Hino Motors Ltd ,  日野自動車株式会社

Inventor： HOSOYA MITSURU

IPC: F01N3/20 ,  B01D53/56 ,  F01N3/08 ,  F01N3/24 ,  F01N3/28

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device providing high NOx reduction rate from a relatively low temperature zone by an NOx absorber not using noble metal or an NOx absorber using a little amount of noble metal such as platinum without using a NOx storage reduction catalyst using platinum. SOLUTION: This device is provided with an oxidation catalyst 5 equipped in a middle of an exhaust pipe 4, a pair of NOx absorbers 6 equipped in parallel in a middle of an exhaust pipe 4 in a downstream side of the oxidation catalyst 5, an exhaust open and close valve 7 distributing exhaust gas 3 to one of the NOx absorbers 6, a heating means 19 heating the NOx absorber in a side in which exhaust gas 3 is dammed by the exhaust open and close valve 7, and an NOx collection pipe 21 introducing NOx desorbed from the NOx absorber 6 in a side heated by the heating means 19 to an intake pipe 20. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种废气排放控制装置，其通过不使用贵金属的NOx吸收剂或使用少量贵金属如铂的NOx吸收剂从相对低温区域提供高NOx还原速率，而不使用 使用铂的NOx储存还原催化剂。 解决方案：该装置设置有设置在排气管4的中间的氧化催化剂5，在氧化催化剂5的下游侧的排气管4的中央并列配置的一对NOx吸收体6 排气打开和关闭阀7，其将废气3分配到NOx吸收器6中的一个;加热装置19，其在废气3被排气打开和关闭阀7阻挡的一侧加热NOx吸收器;以及NOx 收集管21将从加热装置19加热的一侧的NOx吸收体6脱附的NOx导入到进气管20中。（C）2006，JPO＆NCIPI