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公开(公告)号：JP2006161768A
公开(公告)日：2006-06-22
申请号：JP2004357732
申请日：2004-12-10
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SHIMODA MASATOSHI , TAKENAKA YOSHIHIDE
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device always obtaining a high NOx reducing rate irrespective of operation condition. SOLUTION: The exhaust emission control device is constructed so that a NOx storage reduction catalyst 5 is equipped in the middle of an exhaust flow passage 2, 4 for reducing and purifying NOx. A fuel reforming catalyst structure 7 or a plasma fuel reforming means is provided upstream of the NOx storage reduction catalyst 5 in the exhaust flow passage 2, 4 for decomposing fuel into H 2 and CO. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种始终获得高NOx还原率的废气排放控制装置，而与操作条件无关。 解决方案：废气排放控制装置被构造成在排气流通通道2,4的中间装备NOx储存还原催化剂5，用于还原和净化NOx。 燃料重整催化剂结构7或等离子体燃料重整装置设置在废气流通道2,4中的NOx储存还原催化剂5的上游，用于将燃料分解成H
2 和CO。 （C）2006，JPO＆NCIPI -
公开(公告)号：JP2006002663A
公开(公告)日：2006-01-05
申请号：JP2004179734
申请日：2004-06-17
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： HOSOYA MITSURU , SHIMODA MASATOSHI
IPC: F01N3/08 , B01D53/94 , F01N3/20 , F01N3/28 , F01N11/00 , F02D41/02 , F02D41/14 , F02D41/22 , F02D45/00
CPC classification number: F02D41/146 , B01D53/9431 , F01N3/2066 , F01N11/007 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F02D41/0275 , F02D41/221 , Y02T10/24 , Y02T10/40 , Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To minimize an increase in discharged amount of NOx even under a condition where NOx control system causes a malfunction.
SOLUTION: In this exhaust emission control device, a selective reduction catalyst 10 is installed in in the middle of an exhaust tube 9, and a urea water 17 (reducer) is added to the upstream side of the selective reduction catalyst 10 by a urea water adding means 18 (reducer adding means) to reduce and purify NOx. The control device comprises NOx sensors 24 and 25 disposed on the inlet and outlet sides of the selective reduction catalyst and detecting an NOx concentration and an NOx purification control device 23 (control device) determining to be defective when a prescribed NOx reduction rate is not achieved based on detection signals 24a and 25a from both NOx sensors 24 and 25 and instructing the limit of the injected amount of fuel under the condition in which the defect is determined.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：即使在NOx控制系统导致故障的情况下，也可以尽量减少NOx的排出量的增加。 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的中间，并且通过在选择还原催化剂10的上游侧加入尿素水17（还原剂） 尿素水添加装置18（减速器添加装置），用于减少和净化NOx。 控制装置包括设置在选择还原催化剂的入口侧和出口侧的NOx传感器24和25，并且在没有达到规定的NOx还原率时检测NOx浓度和NOx净化控制装置23（控制装置），判定为有缺陷 基于来自两个NOx传感器24和25的检测信号24a和25a，并且在确定缺陷的条件下指示燃料喷射量的限制。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005233117A
公开(公告)日：2005-09-02
申请号：JP2004044591
申请日：2004-02-20
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SATO SHINYA , HOSOYA MITSURU , TAKENAKA YOSHIHIDE , SHIMODA MASATOSHI
CPC classification number: Y02T10/24
Abstract: PROBLEM TO BE SOLVED: To suitably control the amount of addition of a reducing agent by estimating the amount of adsorption of the reducing agent for a NOx reduction catalyst. SOLUTION: A control method of an exhaust purifier is that the NOx reduction catalyst 10 is provided at some midpoint in an exhaust pipe 9, and that urea water 17 (the reducing agent) is added to the upstream side of the NOx reduction catalyst 10 by a means 18 of adding the urea water (a means of adding the reducing agent), thus NOx is reduced and purified. Then the amount of generation of NOx is estimated, and the amount of addition of the urea water 17 appropriate to the estimated value is determined. On the other hand, the progression of the concentration of NOx on the outlet side of the NOx reduction catalyst 10 after the addition of the urea water 17 is stopped is monitored. Then the amount of adsorption of the urea water 17 for the NOx reduction catalyst 10 is estimated in response to the degree of its variations. A correction coefficient that is appropriate to the amount of adsorption is determined, and the amount of addition of the urea water 17 is corrected by the correction coefficient. Then the corrected amount of addition of the urea water 17 is made an indicating value for addition for the means 18 of adding the urea water. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：通过估计用于还原催化剂的还原剂的吸附量来适当地控制还原剂的添加量。 解决方案：排气净化器的控制方法是将NOx还原催化剂10设置在排气管9的某个中点处，并且将尿素水17（还原剂）添加到NOx还原的上游侧 催化剂10通过添加尿素水的方法18（添加还原剂的方法），从而还原和净化NOx。 然后估计NOx的产生量，并且确定适合于估计值的尿素水17的添加量。 另一方面，监视了在添加尿素水17之后NOx还原催化剂10的出口侧的NOx浓度的下降。 然后，根据其变化程度来估计用于NOx还原催化剂10的尿素水17的吸附量。 确定适合于吸附量的校正系数，并通过校正系数校正尿素水17的添加量。 然后，校正尿素水17的添加量作为添加尿素水的装置18的指示值。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004353596A
公开(公告)日：2004-12-16
申请号：JP2003154155
申请日：2003-05-30
Applicant: Hino Motors Ltd , 日野自動車株式会社
Inventor： SHIMODA MASATOSHI
CPC classification number: Y02T10/47
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of suitably burning and removing soot or SOF adhering and accumulating on an electrode of a plasma generating device. SOLUTION: The exhaust emission control device equipped with an after-treatment device (catalyst regeneration type particulate filter 10) making exhaust gas 8 passing therethrough and purifying the same in a middle of an exhaust pipe 9 of an internal combustion engine (diesel engine 1) is provided with the plasma generating device 11 generating plasma by carrying out electrical discharge in the exhaust gas 8 in an upstream side of the after-treatment device, a flow through type oxidation catalyst 12 installed in a preceding stage of the plasma generating device 11, a fuel adding means (control device 17) adding fuel in the exhaust gas 8 in an upstream side of the oxidation catalyst 12, and a temperature raising means (intake air throttle valve 22 or control device 17) raising exhaust gas temperature to temperature enabling oxidation reaction of the fuel added by the fuel adding means in the oxidation catalyst 12. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2002161732A
公开(公告)日：2002-06-07
申请号：JP2000365198
申请日：2000-11-30
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , HOSOYA MITSURU
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas cleaning device that can be adapted to obtain a high rate of NOX reduction from comparatively low temperature region even if urea solution is utilized for reduction agent. SOLUTION: With regard to the exhaust gas cleaning device which is constituted so that a NOX reduction catalyst 5 is provided intermediate an exhaust pipe 4, and reduction cleaning of NOX is carried out, on the upstream side of the foregoing NOX reduction catalyst 5, by adding urea solution 12 as a reduction agent; a urea decomposing catalyst 7 that decomposes the urea solution 12 into ammonia and carbon dioxide is provided between the position in the longitudinal direction of the exhaust pipe 4 where the urea solution is added and the NOX reduction catalyst 5, thereby decomposing the urea solution 12 into ammonia and carbon dioxide by the foregoing urea decomposing catalyst 7, and the highly reactive ammonia thus obtained enables efficient execution of reduction treatment of NOX.
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Patent Agency Ranking
公开(公告)号：JP2000356127A
公开(公告)日：2000-12-26
申请号：JP16702699
申请日：1999-06-14
Applicant: HINO MOTORS LTD
Inventor： HIRABAYASHI HIROSHI , HOSOYA MITSURU , SHIMOKAWA KIYOHIRO , SHIMODA MASATOSHI , HIKINO SEIJI
IPC: F02M25/07 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F01N3/36 , F02D9/02 , F02D9/04 , F02D41/02 , F02D43/00
Abstract: PROBLEM TO BE SOLVED: To efficiently occlude NOx within an exhaust emission gas by a catalyst, and convert the NOx occluded in the catalyst into a harmless N2, water or the like to regenerate the catalyst, without complicating structure of an exhaust system. SOLUTION: A catalyst 13 provided in an exhaust passage 12 of an diesel engine 11 occludes NOx in an exhaust gas flowing in the exhaust passage 12, and is regenerated by discharging the occluded NOx when a concentration of oxygen in the exhaust gas is decreased. An EGR valve 16 is provided in an EGR pipe 14 which connects the exhaust passage 12 with an intake passage 18 through the diesel engine 11. An exhaust throttle valve 17 is disposed in the exhaust passage 12 at an exhaust gas downstream side compared with a connecting point of the EGR pipe 14, and an intake throttle valve 19 is disposed in the intake passage 18 at an exhaust gas upstream side compared with the connecting point of the EGR pipe 14. A controller 22 controls the EGR valve 16, the exhaust throttle valve 17, and the intake throttle valve 19 based on an output detected by a regeneration start detection sensor 21 which detects a regeneration start timing of the catalyst.
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公开(公告)号：JPH07317533A
公开(公告)日：1995-12-05
申请号：JP11099994
申请日：1994-05-25
Applicant: HINO MOTORS LTD
Inventor： FUNAYAMA NOBUHIRO , IGARASHI TATSUOKI , SHIMODA MASATOSHI
Abstract: PURPOSE:To effectively and uniformly remove particulates attached to a particulate filter without raising the air pressure for back-wash. CONSTITUTION:A particulate 14 is installed on the way of an exhaust pipe 13 connected to the exhaust manifold 12 of an engine 11 and has an incineration chamber 14c which is equipped internally with a particulate filter 16 and at the bottom with a heater 17. Besides them, the back-wash device for particulate filter is equipped with a back-wash nozzle 19 located in the exhaust gas downstream of the filter, an air feed pipe 20 connected with the nozzle and feeding the counter-wash air to the nozzle, and a shutoff valve 23 installed on the exhaust pipe 13b downstream of the nozzle 19 and capable of opening and closing the downstream exhaust pipe 13b. A plurality of such nozzle are installed in position confronting the particulate filter, and the air feed pipe branches corresponding to the number of nozzle and connected to them.
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公开(公告)号：JPH05156993A
公开(公告)日：1993-06-22
申请号：JP34888391
申请日：1991-12-05
Applicant: HINO MOTORS LTD
Inventor： OTANI TETSUYA , SHIMODA MASATOSHI , HOSOYA MITSURU
Abstract: PURPOSE:To treat NOx included in exhaust gas by catalyste easily so as to improve treatment efficiency of NOx, and form an exhaust gas purifying device in a simple structure and a compact size. CONSTITUTION:The fuel spill timing of a fuel injector 13 for injecting fuel supplied by a feed pump 15 into a cylinder chamber, is controlled by a solenoid valve 14. The fuel injector 13 is forced to carry out main fuel injection and also post fuel injection whose fuel injection amount is set within the range from 0.3 to 3% of a main fuel injection amount, and whose fuel injection timing is set after the main fuel injection within a crank angle range from nearly 40 degree before the opening of an exhaust valve to the opening of the exhaust valve.
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公开(公告)号：JPH04292521A
公开(公告)日：1992-10-16
申请号：JP5542191
申请日：1991-03-20
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI , IGARASHI TATSUOKI , SANO SHUJIRO
Abstract: PURPOSE:In a device which jets air toward a particulate filter provided in the exhaust passage of a diesel engine to tear off a particulate matter for regenerating the filter, to prevent the air from striking against only the partial spot of the particulate filter to cause the ununiform tear-off of the particulate matter. CONSTITUTION:Air jetted toward the downstream side of an exhaust through a nozzle 7 is reflected by a reflecting valve 9, and passes through toward a particulate filter 13 on the upstream side of the exhaust in a state where the air is decelerated for heightening its static pressure. The particulate matter can be uniformly teared off by utilizing the air under its static pressure instead of dynamic pressure.
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公开(公告)号：JPH04203409A
公开(公告)日：1992-07-24
申请号：JP33433790
申请日：1990-11-30
Applicant: HINO MOTORS LTD
Inventor： SHIMODA MASATOSHI
Abstract: PURPOSE:To eliminate chemical composition and particle shaped material of exhaust gas by collecting respectively reducing catalyst on an exhaust upstream side and catalyst oxide on an exhaust downstream side on the outer surface of the core part in an element in which a plurality of exhaust flowing-in holes penetrate the core part. CONSTITUTION:When exhaust from an exhaust manifold 2 is passed through a minute hole 21 of a core part 20a from the exhaust flowing-in hole 22 of an element 20 at the time of operation of a diesel engine 1, a particle shaped material A in exhaust gas is collected and eliminated. Exhaust from the particle shaped material A is eliminated passes a reducing catalyst mesh 23 on the outer surface 20c of the core part 20a, and brought in contact with the reducing catalyst so as to eliminate NOX in exhaust gas by reducing reaction. Exhaust is passed through catalyst oxide mesh 24 and brought in contact with the catalyst oxide so as to eliminate CO, HC in exhaust gas by oxidizing reaction. It is thus possible to eliminate the particle shaped material A and chemical composition in exhaust gas at the same time.
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