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公开(公告)号：JP2009264147A
公开(公告)日：2009-11-12
申请号：JP2008111972
申请日：2008-04-23
Applicant: Hino Motors Ltd , Toyohashi Univ Of Technology , 国立大学法人豊橋技術科学大学 , 日野自動車株式会社
Inventor： KAWADA YOSHIHIRO , SATO SHINYA , HOSOYA MITSURU , MIZUNO AKIRA
CPC classification number: Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of showing high NOx reduction performances right after a stage where exhaust gas temperature reaches activation temperature zone of selective reduction type catalyst even under a condition where exhaust gas temperature is low such as in the case of engine start and low speed travel. SOLUTION: The exhaust emission control device includes the selective reduction type catalyst 11 provided with a characteristics making NOx selectively react with ammonia even under existence of oxygen, and an urea water adding valve 14 (urea water adding means) adding urea water 13 as reducer to an upstream side of the selective reduction type catalyst 11, in the middle of an exhaust pipe 10 in which exhaust gas 8 from an engine 1 flows. The device is additionally equipped with an urea water discharge decomposition reactor 18 supplied with pasted urea which is formed by dissolving urea powder in solution to be given fluidity, and forcibly decomposing the pasted urea to ammonia by discharge plasma and introducing the same to the exhaust pipe 10 at an upstream side of the selective reduction type catalyst 11. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 解决问题：即使在废气温度低的条件下，即使在排气温度低的条件下，即使在排气温度达到选择还原型催化剂的活化温度区域的阶段之后，也能够显示出高NOx还原性能的废气排放控制装置， 如在发动机启动和低速行驶的情况下。 解决方案：废气排放控制装置包括选择还原型催化剂11，其特征在于，即使在存在氧的情况下，NOx也选择性地与氨反应，并且添加尿素水13的尿素水添加阀14（尿素水添加装置） 作为选择还原型催化剂11的上游侧的还原剂，其中来自发动机1的废气8流过的排气管10的中间。 该装置还配备有通过将尿素粉末溶解在溶液中而成为赋予流动性而形成的粘贴尿素的尿素水分解反应器18，并且通过排出等离子体强制地将糊状尿素分解成氨，并将其引入排气管 10选择还原型催化剂11的上游侧。版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2009013932A
公开(公告)日：2009-01-22
申请号：JP2007178713
申请日：2007-07-06
Applicant: Hino Motors Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 日野自動車株式会社
Inventor： YABE MASAHIKO , YOKOTA HARUYUKI , SHIMIZU TAKAHARU , NINOMIYA HIROYUKI , SATO SHINYA , KANEDA TAKESHI , TOSHIOKA TOSHISUKE , WATABE SATORU , ODA TOMIHISA , TAUCHI YUTAKA
CPC classification number: F01N3/2066 , F01N13/009 , F01N2570/14 , F01N2610/02 , Y02A50/2344 , Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To obtain excellent NOx reducing effect from an exhaust temperature lower than a conventional one without causing a trouble in engine starting or the like after long time engine stop.
SOLUTION: An exhaust emission control device which includes at some midpoint of an exhaust pipe 4 a selective reduction type catalyst 5 capable of selectively reacting NOx with ammonia even in the presence of oxygen, and which reduces and controls NOx by adding urea water 6 as a reducing agent in the exhaust pipe 4 on the upstream side from the selective reduction type catalyst 5, is provided with a particulate filter 10 attaching an oxidation catalyst 9 to a front stage thereof in the exhaust pipe 4 on the upstream side from an adding position of the urea water 6, and NOx adsorbing catalyst 17 having a property in which NOx in the exhaust 3 is physically adsorbed at a temperature lower than an active lower limit temperature of the selective reduction type catalyst 5 and the absorbed NOx is discharged at a temperature near an active lower limit temperature of the selective reduction type catalyst 5, between the particulate filter 10 and an adding position of the urea water 6.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：为了从低于常规排气温度的废气温度获得优异的NOx还原效果，在长时间的发动机停止后不会引起发动机起动等问题。 解决方案：一种废气排放控制装置，其在排气管4的一些中点处包括选择性还原型催化剂5，其能够在氧气存在下选择性地使NOx与氨反应，并且通过添加尿素水来减少和控制NOx 作为来自选择还原型催化剂5的上游侧的排气管4中的还原剂6，在从上游侧的排气管4中设置有将氧化催化剂9附着到前级的微粒过滤器10 在低于选择还原型催化剂5的活性下限温度和吸收的NOx的温度下，具有排气3中的NOx被物理吸附的特性的NOx吸附催化剂17的排出位置排出 颗粒过滤器10与尿素水6的添加位置之间的选择还原型催化剂5的活性下限温度附近的温度。 YRIGHT：（C）2009，JPO＆INPIT
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公开(公告)号：JP2008286059A
公开(公告)日：2008-11-27
申请号：JP2007130557
申请日：2007-05-16
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： KAWADA YOSHIHIRO , SATO SHINYA , HOSOYA MITSURU
CPC classification number: Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission treatment device capable of more strictly inhibiting expansion of environmental pollution by inhibiting discharge of particulate matter contained in exhaust gas to atmosphere as much as possible.
SOLUTION: An urea water addition device 20, an urea SCR (Selective Catalytic Reduction) catalyst 30, and a diesel particulate filter 40 are installed in an exhaust gas passage 2 of the exhaust emission treatment device 10 in this order. The urea SCR catalyst 30 reduces and converts NOx in exhaust gas. The diesel particulate filter 40 provided at a most downstream part of the exhaust gas passage 2 collects PM (Particulate Matter) in exhaust gas from the internal combustion engine 1, and collects particulate matter such as NH
4 NO
3 (ammonium nitrate) and melamine leaking from the urea SCR catalyst 30. Consequently, all of PM (Particulate Matter) discharged from the internal combustion engine 1 including material originated from urea which are secondarily formed, or become surplus in the urea SCR catalyst 30 and which flows out of the urea SCR catalyst 30 can be collected.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 解决的问题：提供一种废气排放处理装置，其能够通过尽可能地抑制废气中包含的颗粒物质向气氛中的排放而更严格地抑制环境污染的扩大。 解决方案：在废气排放处理装置10的废气通道2中依次安装尿素水添加装置20，尿素SCR（选择性催化还原）催化剂30和柴油微粒过滤器40。 尿素SCR催化剂30减少并转化废气中的NOx。 设置在废气通道2的最下游部分的柴油机微粒过滤器40在内燃机1的废气中收集PM（颗粒物），并收集诸如NH 4， SB“3”（硝酸铵）和从尿素SCR催化剂30泄漏的三聚氰胺。因此，从内燃机1排出的所有PM（颗粒物质）都包含源自二次形成的尿素的物质或成为剩余 在尿素SCR催化剂30中，可以收集流出尿素SCR催化剂30的液体。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008286001A
公开(公告)日：2008-11-27
申请号：JP2007128880
申请日：2007-05-15
Applicant: Hino Motors Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 日野自動車株式会社
Inventor： TOSHIOKA TOSHISUKE , ODA TOMIHISA , ITO KAZUHIRO , ITO TAKEKAZU , TAUCHI YUTAKA , YOKOTA HARUYUKI , SHIMIZU TAKAHARU , SATO SHINYA , NINOMIYA HIROYUKI , KANEDA TAKESHI , TAGAMI YOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To calculate a urea supply quantity by considering adsorption and emission of NO x of an NO x adsorption catalyst. SOLUTION: An NO x selective reduction catalyst 15 is arranged in an engine exhaust passage, and an NO x adsorption catalyst 12 is arranged in the engine exhaust passage on the upstream side of the NO x selective reduction catalyst 15. An adsorbed NO x quantity to the NO x adsorption catalyst 12 and an emitted NO x quantity from the NO x adsorption catalyst 12 are calculated; the urea supply quantity is reduced by a reduction portion of the adsorbed NO x quantity calculated for a urea supply quantity determined from the operation state of the engine; and the urea supply quantity is increased by the reduction portion of the emitted NO x quantity calculated for a urea supply quantity determined from the operation state of the engine. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：通过考虑吸附和排放NO
x 吸附催化剂的NO x 来计算尿素供给量。 解决方案：在发动机排气通道中设置NO x 选择还原催化剂15，并且在发动机排气通道中配置NO SB SB吸附催化剂12 NOS / SB> x 选择还原催化剂15的上游侧。向NO SB SB x吸附催化剂12吸附的NOS SB x x SB量和排放的NO SB 计算来自NO x 吸附催化剂12的> x 量; 通过根据从发动机的运转状态确定的尿素供给量计算出的吸附的NO x 量的减少部分来减少尿素供给量; 并且通过根据从发动机的运行状态确定的尿素供给量计算出的排出的NO x 量的减少部分增加尿素供给量。 版权所有（C）2009，JPO＆INPIT -
公开(公告)号：JP2007077957A
公开(公告)日：2007-03-29
申请号：JP2005270188
申请日：2005-09-16
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , SHIMODA MASATOSHI , SATO SHINYA
CPC classification number: Y02A50/2322
Abstract: PROBLEM TO BE SOLVED: To obtain an excellent NOx reduction effect from an exhaust temperature lower than a conventional one, even in a vehicle in an operation mode where an operation state at low exhaust temperature continues for a long time. SOLUTION: In relation to this exhaust emission control device composed by interposing a selective reduction type catalyst 10 allowing NOx to be selectively reacted with ammonia even in an exhaust pipe 9 (exhaust passage) for guiding an exhaust gas 7 from an engine 1 and provided with an urea water adding device 19 for adding urea water 17 in the exhaust gas 7 as a reduction agent on the upstream side of the selective reduction type catalyst 10, a mixer 18 for diffusing the exhaust gas 7 to facilitate dispersion of the urea water 17 is arranged between an adding position of the urea water 17 (the position of an opening of an injection nozzle 13) by the urea water adding device 19 and the selective reduction type catalyst 10. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：即使在低排气温度下的运行状态长时间持续的运转模式下，为了从低于常规排气温度的排气温度获得优异的NOx还原效果。 解决方案：关于这种废气排放控制装置，即通过在排气管9（排气通道）中插入选择性还原型催化剂10，该选择还原型催化剂10允许NOx与氨选择性反应，排气管9用于引导来自发动机1的废气7 并且在选择还原型催化剂10的上游侧设置有作为还原剂的排气7中的尿素水17的尿素水添加装置19，用于扩散排气7以促进尿素分散的混合器18 水17通过尿素水添加装置19和选择还原型催化剂10配置在尿素水17的添加位置（喷嘴13的开口的位置）之间。（C）2007， JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2006046287A
公开(公告)日：2006-02-16
申请号：JP2004232162
申请日：2004-08-09
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SATO SHINYA
CPC classification number: Y02A50/2322
Abstract: PROBLEM TO BE SOLVED: To prevent generation of clogging in an injection nozzle due to crystals of urea. SOLUTION: In this exhaust emission control device, a selective reduction type catalyst 4 is provided in the middle of an exhaust pipe 3, and urea water 8 as reducer is added to the upstream side of the selective reduction type catalyst 4 through the injection nozzle 5, so that NOx is reduced. Between a urea water supply pipe 7 to introduce urea water 8 from a urea water tank 6 to the injection nozzle 5 and a drain pipe 12 for condensation water 11 from an air conditioner 10 to flow down to be discharged to outward of a car, nozzle cleaning piping 13 is provided to introduce condensation water 11 to reach a lower position of the urea water supply pipe 7 by using level difference from an upper position of the drain pipe 12. An opening valve 14 is provided close to a terminal end of the nozzle cleaning piping 13 to be normally closed, and opened when a starter switch is off. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：为了防止由于尿素晶体而在喷嘴中产生堵塞。 解决方案：在该废气排放控制装置中，在排气管3的中央设有选择还原型催化剂4，通过该选择还原型催化剂4的上游侧将作为还原剂的尿素水8添加到选择还原型催化剂4的上游侧 喷嘴5，使得NOx减少。 在将尿素水8从尿素水箱6引入喷嘴5的尿素水供给管7和冷凝水排出管12之间，从空气调节器10向下流动排出到汽车的外侧 提供清洁管道13，以通过与排水管12的上部位置的水平差来引导冷凝水11到达尿素水供给管7的下部位置。开口阀14设置在喷嘴的末端附近 清洁管13常闭，当起动开关断开时打开。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005264924A
公开(公告)日：2005-09-29
申请号：JP2004360945
申请日：2004-12-14
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： TSUJI YUKIHIRO , SATO SHINYA , KIRISAWA MICHIAKI
Abstract: PROBLEM TO BE SOLVED: To minimize a failure in resupplying urea water by actualizing the resupply of light oil and the urea water at the same time.
SOLUTION: This storage device for the urea water 17 to be added as reducing agent into a selective reduction catalyst for reducing and purifying NOx comprises a porous-structure float 19 whose buoyancy is adjusted to float in the urea water 17 and sink down in the light oil 18, stored in a fuel tank 14. A light oil outlet 20 is provided in the upper face side of the float 19 for trapping the light oil 18 and a urea water outlet 21 is provided in the lower face side of the float 19 for trapping the urea water 17. The light oil 18 and the urea water 17 are individually taken out to the outside of the fuel tank 14 via the light oil outlet 20 and the urea water outlet 21.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：通过同时实现轻油和尿素水的补给来最大限度地减少尿素补给的失败。 解决方案：将作为还原剂添加到用于还原和净化NOx的选择性还原催化剂中的尿素水17的储存装置包括多孔结构浮子19，其浮力被调节以漂浮在尿素水17中并下沉 在轻油18中，存储在燃料箱14中。在浮子19的上表面侧设置有轻油出口20，用于捕获轻油18，并且在下部面设置尿素水出口21 浮子19用于捕获尿素水17.轻油18和尿素水17经由轻油出口20和尿素水出口21分别被取出到燃料箱14的外部。版权所有（C） ）2005年，日本特许厅和NCIPI
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公开(公告)号：JP2005002925A
公开(公告)日：2005-01-06
申请号：JP2003168219
申请日：2003-06-12
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , HIRABAYASHI HIROSHI , SATO SHINYA
CPC classification number: Y02A50/2322 , Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To provide a good NOx reducing effect from low exhaust gas temperature as compared with a conventional device even for a vehicle of an operation style with which an operation condition of low exhaust gas temperature continues for a long period of time.
SOLUTION: This exhaust emission control device is composed of NOx occlusion material 10 installed in a middle of an exhaust pipe 9 and oxidizing NOx in exhaust gas and temporarily occluding the same as nitrate and decomposing and discharging NOx with intervention of reducing agent at a time of drop of oxygen concentration, oxidation catalyst 13 installed in upper stream of the NOx occlusion material, a fuel adding means (a fuel injection device 17, a control device 16) adding fuel in exhaust gas 8 as reducing agent in an upper stream side of the oxidation catalyst, selective reduction type catalyst 12 installed right after the NOx occlusion material 10 and making NOx selectively react with ammonia even under existence of oxygen, and a urea water adding means (a urea water tank 19, urea water supply pipe 20, a supply pump 21, an injection nozzle 23) adding urea water 22 in the exhaust gas 8 as reducing agent at an inlet side of the selective reducing type catalyst.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：即使对于低排气温度的运行条件长时间持续的操作方式的车辆，与常规装置相比，也可以从低排气温度提供良好的NOx还原效果 时间。 解决方案：该废气排放控制装置由安装在排气管9的中部的NOx吸留材料10构成，并且在废气中氧化NOx并暂时将其与硝酸盐封闭，并且通过还原剂的介入分解和排出NOx 氧浓度下降的时间，安装在NOx吸留材料的上游的氧化催化剂13，在排气8中作为还原剂添加燃料的燃料添加装置（燃料喷射装置17，控制装置16） 氧化催化剂的侧面，安装在NOx吸留材料10之后的选择还原型催化剂12，即使在存在氧的情况下也使NOx选择性地与氨反应，以及尿素水添加装置（尿素水箱19，尿素水供给管20 ，供给泵21，喷射喷嘴23），在排气8中，作为还原剂，在选择还原型催化剂的入口侧添加尿素水22。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2001140635A
公开(公告)日：2001-05-22
申请号：JP32833999
申请日：1999-11-18
Applicant: HINO MOTORS LTD
Inventor： SATO SHINYA , MOGI HIRONOBU , HIRABAYASHI HIROSHI , SHIMODA MASATOSHI , HOSOYA MITSURU
Abstract: PROBLEM TO BE SOLVED: To provide a highly practical exhaust emission control device capable of well recovering a NOx storage reducing catalyst even in a lean-burn operating condition by using the NOx storage reducing catalyst highly effective for reducing NOx in lean-burn operation. SOLUTION: The NOx storage reducing catalyst 11 is mounted on the way of an exhaust pipe 9, in which exhaust gas 7 is distributed, for oxidizing NOx to be temporarily stored in the form of nitrate when the concentration of oxygen in the exhaust gas 7 is high and for decomposing and releasing NOx to be reduced and purified via a reducer 10 when the concentration of oxygen in the exhaust gas 7 is low. The reducer 10 is properly added to the NOx storage reducing catalyst 11 and the NOx storage reducing catalyst H is properly bypassed, whereby the flow rate of the exhaust gas 7 passing through the NOx storage reducing catalyst 11 is restricted.
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公开(公告)号：JP2001115822A
公开(公告)日：2001-04-24
申请号：JP29666399
申请日：1999-10-19
Applicant: HINO MOTORS LTD
Inventor： IGARASHI TATSUOKI , SHIMODA MASATOSHI , HOSOYA MITSURU , MOGI HIRONOBU , SATO SHINYA , HIRABAYASHI HIROSHI
IPC: F01N3/02 , F01N3/023 , F01N3/025 , F01N3/029 , F01N3/035 , F01N3/24 , F01N13/02 , F02B3/06 , F02B29/04 , F02B37/00 , F02D9/02 , F02D13/02 , F02D41/04 , F02D43/00 , F02M25/07
Abstract: PROBLEM TO BE SOLVED: To prevent an excessively collecting condition by a particulate filter under every operating condition of an engine so as to prevent reduction of fuel rate and power performance of the engine. SOLUTION: An oxidation catalyst 14 for oxidizing NO in exhaust gas of an engine 11 into NO2 is disposed in an exhaust passage 13, and a particulate filter 14b for collecting particulate in exhaust gas and for oxidizing and eliminating the particulate by NO2 at a prescribed exhaust gas temperature or more is disposed in an exhaust passage arranged on a downstream side of exhaust gas from the oxidation catalyst. A variable timer mechanism 16d for regulating an injection timing for fuel is disposed on an in-line fuel injection device 16 for injecting fuel to the engine, and an accumulation amount of the particulate accumulated on the particulate filter is detected by an accumulation amount detecting means 17. In a controller 18, the variable timer mechanism is controlled on the basis of the output detected by the accumulation amount detecting means.
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