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公开(公告)号：JP2006002662A
公开(公告)日：2006-01-05
申请号：JP2004179733
申请日：2004-06-17
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU
CPC classification number: Y02A50/2325
Abstract: PROBLEM TO BE SOLVED: To provide an excellent NOx reduction effect at a lower exhaust gas temperature even in a vehicle with such an operating style that an operating state with low exhaust gas temperature is continued for a long period. SOLUTION: In this exhaust emission control device, a selective reduction catalyst 10 is installed in an exhaust tube 9, and a urea water 17 as a reducer is added to the upstream side of the selective reduction catalyst 10 to reduce and purify NOx. A urea decomposing chamber 12 having a heater panel 20 heated by energization is installed at a urea water 17 adding position to spray the urea water 17 toward the heater panel 20. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：即使在具有低排气温度的运行状态长时间持续的操作方式的车辆中，也能在较低排气温度下提供优异的NOx还原效果。 解决方案：在该废气排放控制装置中，选择还原催化剂10安装在排气管9中，并且作为还原剂的尿素水17被添加到选择还原催化剂10的上游侧，以减少和净化NOx 。 具有通过加热加热的加热器面板20的尿素分解室12安装在尿素水17的添加位置以将尿素水17喷向加热器面板20.版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005264894A
公开(公告)日：2005-09-29
申请号：JP2004082086
申请日：2004-03-22
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , SHIMODA MASATOSHI
CPC classification number: Y02A50/2322 , Y02C20/10
Abstract: PROBLEM TO BE SOLVED: To obtain a successful NOx reduction effect from an exhaust temperature lower than the conventional, even in a vehicle of such an operation mode that an operation state in a low exhaust temperature continues for a long time. SOLUTION: The exhaust emission control device is provided with a selective reduction catalyst 10 installed midway along an exhaust pipe 9 of an engine 1, selectively enabling the reaction of NOx with ammonia even under coexistence of oxygen, a urea water adding means 18 (reducing agent adding means) to directly inject urea water 17 as a reducing agent into the exhaust pipe 9 at the upstream side from the selective reduction catalyst 10, a pre-oxidation catalyst 19 installed in the exhaust pipe 9 at the upstream side from the adding position of the urea water 17 by the urea water adding means 18, and a light oil adding means 26 (fuel adding means) to directly inject light oil 25 (fuel) into the exhaust pipe 9 at the upstream side from the pre-oxidation catalyst 19. COPYRIGHT: (C)2005,JPO&NCIPI
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这种运转模式的车辆中，为了从低于常规的排气温度获得成功的NOx还原效果。 解决方案：废气排放控制装置设置有沿着发动机1的排气管9的中途安装的选择性还原催化剂10，即使在氧共存的情况下也能够选择性地使NOx与氨反应，尿素水添加装置18 （还原剂添加装置）在选择还原催化剂10的上游侧将尿素水17作为还原剂直接喷射到排气管9中的预氧化催化剂19，其安装在排气管9的上游侧 通过尿素水添加装置18添加尿素水17的位置，以及轻油添加装置26（燃料添加装置），在预氧化的上游侧将轻油25（燃料）直接喷射到排气管9中 催化剂19.版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005144378A
公开(公告)日：2005-06-09
申请号：JP2003387757
申请日：2003-11-18
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , SATO SHINYA , SUGAWARA KOJI
Abstract: PROBLEM TO BE SOLVED: To reduce manufacturing cost of a particulate filter without impairing forced regeneration of the particulate filter by addition of fuel. SOLUTION: In this exhaust emission control device equipped with the catalyst regeneration type particulate filter 6 in an exhaust pipe, any one of sulfate compound, nitrate compound or carbonate compound of inexpensive alkaline earth metals like Ca, Mg, Sr and Ba, is carried on the particulate filter 6 as an oxidation catalyst. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：为了降低颗粒过滤器的制造成本，而不会通过添加燃料而损害微粒过滤器的强制再生。 解决方案：在排气管中配备有催化剂再生型微粒过滤器6的废气排放控制装置中，Ca，Mg，Sr，Ba等廉价碱土金属的硫酸盐化合物，硝酸盐化合物或碳酸盐化合物中的任一种， 作为氧化催化剂载持在微粒过滤器6上。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005023921A
公开(公告)日：2005-01-27
申请号：JP2003389411
申请日：2003-11-19
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , SHIMODA MASATOSHI , SATO SHINYA
CPC classification number: Y02C20/10
Abstract: PROBLEM TO BE SOLVED: To avoid the drop of a NOx reducing rate by restricting NO 2 to be excessively produced by an oxidation catalyst even when adopting a structure of the oxidation catalyst arranged at the front stage of a selective reduction catalyst. SOLUTION: In this exhaust emission control device having the oxidation catalyst 11 arranged at the front stage of the selective reduction catalyst 13, a bypass flow path 14 is provided via which exhaust gas 7 is guided to the selective reduction catalyst 13 while bypassing the oxidation catalyst 11. In an operated condition where NO 2 is excessively produced by the oxidation catalyst 11, part of the exhaust gas 7 is guided via the bypass flow path 14 to the selective reduction catalyst 13 while bypassing the oxidation catalyst 11, which properly restricts the amount of the NO 2 to be produced by the oxidation catalyst 11. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：为了通过限制NO
2 来避免由氧化催化剂过度产生的NOx还原速率的降低，即使采用排列在前级的氧化催化剂的结构 的选择性还原催化剂。 解决方案：在具有布置在选择还原催化剂13的前段的氧化催化剂11的排气排放控制装置中，设置旁路流路14，排气7被引导到选择还原催化剂13，同时旁路 氧化催化剂11.在通过氧化催化剂11过度产生NO 2 SB 2的操作条件下，排气7的一部分经由旁通流路14被引导至选择还原催化剂13，同时旁路 氧化催化剂11，其适当地限制由氧化催化剂11产生的NO 2 SB 3的量。（C）2005年，JPO和NCIPI -
公开(公告)号：JP2004239109A
公开(公告)日：2004-08-26
申请号：JP2003027138
申请日：2003-02-04
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU
Abstract: PROBLEM TO BE SOLVED: To remove NOx in exhaust gas over a wide range of an exhaust gas temperature from a low temperature area of about 180 °C to a high temperature area of about 450 °C and thereby to efficiently reduce the NOx in the exhaust gas emitted to the air. SOLUTION: A main selective reduction type catalyst 17 is disposed to an exhaust passage 13 of an engine 11, and a preselection reduction type catalyst 18 is disposed to an exhaust passage disposed upstream of the exhaust gas of the main selective reduction type catalyst. A liquid injection nozzle 22 for ejecting urea liquid 20 stored in a liquid tank 23 is disposed to an exhaust passage disposed upstream of the exhaust gas of the preselection type catalyst. A urea liquid supply means 24 controls a flow rate of the urea liquid stored in the liquid tank and then to supply the liquid to a liquid injection nozzle. A main oxidation catalyst 26 is disposed to an exhaust passage disposed downstream of the exhaust gas of the main selective reduction type catalyst, and a pre-oxidation catalyst 27 is disposed to an exhaust passage disposed upstream of the exhaust gas of the liquid injection nozzle. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract translation: 要解决的问题：为了将废气中的NOx从大约180℃的低温区域到大约450℃的高温区域的宽的废气温度范围内除去，从而有效地降低NOx 在排放到空气中的废气中。 解决方案：主发动机11的排气通道13设置主选择还原型催化剂17，并且将预选还原型催化剂18设置在排气通道上，该排气通道设置在主选择还原型催化剂的排气的上游 。 用于喷射存储在液体箱23中的尿素液体20的液体喷射嘴22设置在布置在预选型催化剂的废气上游的排气通道。 尿素液供给单元24控制储存在液罐中的尿素液体的流量，然后将液体供给到液体注入喷嘴。 主氧化催化剂26设置在布置在主选择还原型催化剂的废气下游的排气通道中，并且预氧化催化剂27设置在布置在液体喷射喷嘴的排气上游的排气通道处。 版权所有（C）2004，JPO＆NCIPI
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Patent Agency Ranking
公开(公告)号：JP2004132222A
公开(公告)日：2004-04-30
申请号：JP2002296171
申请日：2002-10-09
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , KAKEGAWA TOSHIAKI , HARUFUJI SEIJI
CPC classification number: Y02A50/2322
Abstract: PROBLEM TO BE SOLVED: To provide a compact emission control device which has a high performance and which can efficiently regenerate an NO x occlusion and reduction catalyst by adding a fuel of a necessary minimum limit without deteriorating an installation nature in a vehicle. SOLUTION: In the emission control device, a catalyst case 10 is provided on the way of an exhaust manifold 9 through which an exhaust gas flows, an oxidation catalyst 11 is housed in a front stage of its interior, the NO x occlusion and reduction catalyst 12 is housed in a rear stage, a catalyst case 10 is partitioned by a partition plate 13 into a first channel 14 and a second channel 15 so as to pass the gas 7 by halves through the catalyst 11 and the catalyst 12, an exhaust distribution valve 16 (exhaust distributing means) for throttling a flow rate of the other exhaust gas 7 by turning a main flow of the gas 7 to an inlet part of the case 10 to one of the channel 14 and the channel 15 and throttling the flow rate of the gas 7 is provided, and the fuel 19 is individually added to the upstream side by the catalyst 11 in the channel 14 and the channel 15. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2002322922A
公开(公告)日：2002-11-08
申请号：JP2002072043
申请日：2002-03-15
Applicant: HINO MOTORS LTD
Inventor： SUZUKI TAKASHI , SHIMOKAWA KIYOHIRO , YOKOTA HARUYUKI , KUDO YUUGO , UCHIDA NOBORU , SHIMODA MASATOSHI , KAKEGAWA TOSHIAKI , TAKENAKA YOSHIHIDE , HIKINO SEIJI , SHIOZAKI CHUICHI , HOSOYA MITSURU , AOYANAGI YUZO
IPC: F02B23/06 , F01N3/24 , F02D19/08 , F02D21/08 , F02D41/04 , F02D41/38 , F02D41/40 , F02M25/07 , F02M31/04 , F02M31/08
Abstract: PROBLEM TO BE SOLVED: To provide a diesel engine capable of improving the fuel consumption by reducing the amount of black smoke and HC emission with suppressing the NOx generation. SOLUTION: There is installed fuel injection equipment conducting the pre- injection injecting the fuel into intake air for a period from intake stroke early stage to compressive stroke intermediate stage, and conducting the main injection injecting the fuel into a combustion chamber over a plurality of times for a period from the compressive stroke intermediate stage to an expanding stroke early stage. A lean mixture formed by the pre-injection can be burned in the state approaching the complete combustion by a plurality of main injection so as to improve the fuel consumption by suppressing the NOx generation and reducing the amount of HC emission.
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公开(公告)号：JP2002295243A
公开(公告)日：2002-10-09
申请号：JP2001093486
申请日：2001-03-28
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
IPC: F01N3/02 , B01D39/14 , B01D46/42 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/24 , F01N3/28 , F01N3/36
Abstract: PROBLEM TO BE SOLVED: To reduce amount of emission of NOx and particulates contained in the exhaust gas, as well as to prevent HCs produced by emission of hydrocarbon liquid into the atmosphere from discharging. SOLUTION: NOx occlusion reduction catalyst 24, carrying NOx absorbent and active metal, is set in an exhaust pipe 16 of an engine 11, a liquid injection nozzle 29, capable of ejecting the hydrocarbon liquid 32 toward NOx occlusion reduction catalyst is set in the exhaust pipe, the upper stream of the exhaust gas from the NOx occlusion reduction catalyst. A hydrocarbon liquid feed means 36, for feeding liquid via a liquid-regulating valve 34 is set in the liquid ejecting nozzle, and a particulate filter 26 carrying an active metal, functioning as oxidation catalyst is set in the exhaust pipe, downstream of the exhaust gas from the NOx occlusion reduction catalyst. NOx occlusion reduction catalyst is made of a platinum-barium-alumina catalyst, and the particulate filter is coated with either the platinum-zeolite catalyst or platinum-ceria-zeolite catalyst.
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公开(公告)号：JP2001252531A
公开(公告)日：2001-09-18
申请号：JP2000066751
申请日：2000-03-10
Applicant: HINO MOTORS LTD
Inventor： HOSOYA MITSURU
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas cleaning apparatus which can effectively remove soot as well as SOF components. SOLUTION: In the apparatus which removes particulates in exhaust gas 7, a pre-oxidation catalyst 13 which generates NO2 and active oxygen in the exhaust gas 7 is provided on the upstream side of an exhaust pipe 9, and a main oxidation catalyst 14 which burns/removes the particulates with assistance in oxidation by the NO2 and the active oxygen is arranged on the downstream side at a prescribed distance from the catalyst 13.
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公开(公告)号：JP2001003733A
公开(公告)日：2001-01-09
申请号：JP17056799
申请日：1999-06-17
Applicant: HINO MOTORS LTD
Inventor： HOSOYA MITSURU , SATO SHINYA
IPC: B01D53/94 , B01J23/46 , B01J23/72 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/24 , F01N3/28 , F02D21/08 , F02D41/04 , F02D41/38 , F02D43/00
Abstract: PROBLEM TO BE SOLVED: To dispose of exhaust emission at high efficiency over a long period of time by combining a NOx decomposition stage with a catalyst regenerating stage in a suitable time pattern. SOLUTION: An active metal-containing catalyst (catalyst) 7 decomposes NOx when an engine is operated under the lean condition of an air-fuel ratio, so that NOx is contained in the exhaust emission, and the catalyst 7 is gradually oxidized to form an oxide film on the surface of the catalyst 7, so that the NOx decomposition activity of the catalyst 7 is gradually decreased. Such activity decrease is detected by a NOx sensor NS2 installed at an outlet side of the catalyst 7, and when it is known from the NOx concentration that the catalyst activity is unsuitably low or lowered, the air-fuel ratio is put in the rich state. In this state, the oxide film on the surface of the catalyst 7 is removed by reaction and the catalyst 7 is regenerated. The regeneration of the catalyst 7 is determined by monitoring the HC concentration by hydrocarbon sensors CS1, CS2 installed upper-and downstream. When the catalyst is once regenerated the air-fuel ratio is returned to the lean state.
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