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    Exhaust emission control device
    11.
    发明专利
    Exhaust emission control device 有权
    排气排放控制装置

    公开(公告)号：JP2009019556A

    公开(公告)日：2009-01-29

    申请号：JP2007182376

    申请日：2007-07-11

    申请人： Hino Motors Ltd ,  日野自動車株式会社

    发明人： HIRABAYASHI HIROSHI ,  HOSOYA MITSURU ,  MATSUNAMI OKITOMO ,  SANO RUI

    IPC分类号： F01N3/02 ,  B01D46/42 ,  B01D53/94 ,  F01N3/08 ,  F01N3/24 ,  F01N3/28 ,  F01N3/36 ,  F02D21/08 ,  F02M25/07

    CPC分类号： F01N3/035 ,  B01D46/0027 ,  B01D46/0061 ,  B01D46/2418 ,  B01D53/9459 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/0231 ,  F01N3/0253 ,  F01N2510/065 ,  F02B29/04 ,  F02M26/22

    摘要： PROBLEM TO BE SOLVED: To effectively reduce NOx in an operation state of the low exhaust temperature, by utilizing an oxidation catalyst carried on a particulate filter and an oxidation catalyst arranged in its front stage.
    SOLUTION: This exhaust emission control device is provided for forcibly regenerating the particulate filter 13 by reaction heat when its adding fuel causes oxidation reaction on the oxidation catalyst 14, by adding the fuel by post-injection on the diesel engine 1 side, by interposing the catalytic regeneration type particulate filter 13 equipped with the oxidation catalyst 14 in the front stage in an exhaust pipe 11, and is constituted so that an NO
    2 generating catalyst 22 for promoting the oxidation reaction of NO to NO
    2 is arranged in the exhaust pipe 11 on the upstream side of the oxidation catalyst 14, and a fuel adding device 23 is arranged for directly injecting the fuel into exhaust gas 9 between the NO
    2 generating catalyst 22 and the oxidation catalyst 14, and a part of the exhaust gas 9 is extracted from an exhaust system on the upstream side of the fuel adding device 23, and is recirculated to an intake system.
    COPYRIGHT: (C)2009,JPO&INPIT

    摘要翻译： 要解决的问题：通过利用载置在微粒过滤器上的氧化催化剂和布置在其前级的氧化催化剂，在低排气温度的操作状态下有效地还原NOx。 解决方案：该废气排放控制装置用于当其添加燃料在氧化催化剂14上引起氧化反应时通过反应热强制再生微粒过滤器13，通过后喷射将燃料添加到柴油发动机1侧， 通过在排气管11中将装有氧化催化剂14的催化再生型微粒过滤器13置于前段，并且构成为使NO（S 2）生成催化剂22促进NO的氧化反应 到NO 2 布置在氧化催化剂14的上游侧的排气管11中，并且配置燃料添加装置23，用于将燃料直接喷射到NO 2 产生催化剂22和氧化催化剂14，并且一部分废气9从燃料添加装置23的上游侧的排气系统中抽出，并被再循环到进气系统。 版权所有（C）2009，JPO＆INPIT

    Exhaust gas purification device
    15.
    发明专利
    Exhaust gas purification device 有权

    公开(公告)号：JP4785766B2

    公开(公告)日：2011-10-05

    申请号：JP2007029923

    申请日：2007-02-09

    申请人： 日野自動車株式会社

    发明人： 稔 小和田

    IPC分类号： F01N3/24 ,  B01D46/42 ,  B01D53/86 ,  B01D53/94 ,  F01N3/02 ,  F01N3/08

    CPC分类号： B01D46/42 ,  B01D46/0027 ,  B01D46/0061 ,  B01D2279/30 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/2892 ,  F01N13/009 ,  F01N13/011 ,  F01N2610/02 ,  F02D41/029 ,  Y02A50/2325 ,  Y02T10/24

    摘要： The object of the invention is to improve mountability on a vehicle by realizing a compact arrangement of a particulate filter 5 and selective reduction catalyst 6 while ensuring satisfactory reaction time for generation of ammonia from urea water. In an exhaust emission control device having particulate filter 5 incorporated in an exhaust pipe 4, selective reduction catalyst 6 capable of selectively reacting NO x with ammonia under the presence of oxygen being arranged downstream of the particulate filter, urea water as reducing agent being adapted to be added between the selective reduction catalyst 6 and the particulate filter 5, the particulate filter 5 is arranged in parallel with the selective reduction catalyst 6. An S-shaped communication passage 9 is arranged for introduction of the exhaust gas 3 from a rear end of the particulate filter 5 to a front end of the adjacent selective reduction catalyst 6 in a forward folded manner. A urea water addition injector 11 is arranged midway of the communication passage 9.

    Exhaust emission control method and exhaust emission control system
    17.
    发明专利
    Exhaust emission control method and exhaust emission control system 有权
    排气排放控制方法和排气控制系统

    公开(公告)号：JP2008180189A

    公开(公告)日：2008-08-07

    申请号：JP2007015854

    申请日：2007-01-26

    申请人： Isuzu Motors Ltd ,  いすゞ自動車株式会社

    发明人： ONODERA TAKAO ,  HIRATA AKIRA ,  HASEYAMA TAKASHI ,  GOTO SHINJI ,  SATO HITOSHI ,  MASUKO TATSUO ,  NAKANO FUTOSHI ,  YOMOGIDA KOICHIRO

    IPC分类号： F01N3/02 ,  B01D46/42 ,  F01N3/20 ,  F02D45/00

    CPC分类号： F02D41/029 ,  B01D46/0061 ,  B01D46/2418 ,  B01D46/46 ,  B01D2279/30 ,  F01N3/023 ,  F01N9/002 ,  F01N11/002 ,  F01N2900/102 ,  F02D2200/0812 ,  Y02T10/47

    摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control method and an exhaust emission control system capable of burning and removing PM while accumulation quantity of PM unevenly accumulated on DPF is small, preventing excessive rise of internal temperature of DPF caused by excessive accumulation of PM during forcible regeneration and melt down of DPF thereby in exhaust emission control methods and exhaust emission control systems judging forcible regeneration start timing of DPF for converting PM (particulate matter) in exhaust gas based on comparison of differential pressure between before and after DPF and predetermined threshold of differential pressure between before and after the DPF.
    SOLUTION: The threshold ΔPs of differential pressure between before and after DPF is set by multiplying a reference threshold ΔPs0 of differential pressure between before and after DPF by a coefficient α(ΔM) stepwise or continuously changing according to travel distance ΔM of a vehicle after previous forcible regeneration in the exhaust emission control method.
    COPYRIGHT: (C)2008,JPO&INPIT

    摘要翻译： 要解决的问题：提供一种能够在不均匀地积聚在DPF上的PM的累积量小的同时燃烧除去PM的废气排放控制方法和废气排放控制系统，防止由于过量的DPF引起的内部温度的过度升高 根据DPF之前和之后的差压比较，判断废气中的PM（颗粒物）的DPF的强制再生开始时刻的废气排放控制方法和废气排放控制系统中的DPF的积聚， 和DPF之前和之后的压差的预定阈值。 解决方案：通过将DPF之前和之后的压差的参考阈值ΔPs0乘以系数α（ΔM）来逐步或连续地根据a的行进距离ΔM而变化来设置DPF之前和之后的压差的阈值ΔP 之后在废气排放控制方法中强制再生。 版权所有（C）2008，JPO＆INPIT

    目封止ハニカム構造体
    19.
    发明专利
    目封止ハニカム構造体 审中-公开

    公开(公告)号：JP2018153783A

    公开(公告)日：2018-10-04

    申请号：JP2017054567

    申请日：2017-03-21

    申请人： 日本碍子株式会社

    发明人： 結城 一也

    IPC分类号： B01D39/20 ,  F01N3/022 ,  B01D46/00

    CPC分类号： B01J35/04 ,  B01D46/0061 ,  B01D46/2448 ,  B01D46/2466 ,  B01D53/9418 ,  B01D2046/2481 ,  B01D2255/9155 ,  B01D2279/30 ,  C04B38/0012

    摘要： 【課題】接合層に沿った外周壁の表面でのクラックの発生を有効に抑制することが可能な目封止ハニカム構造体を提供する。 【解決手段】複数個のハニカムセグメント4と、接合層6と、ハニカムセグメント4のセル2の開口部を目封止する目封止部5と、を備え、複数個のハニカムセグメント4が接合層6によって接合されたハニカムセグメント接合体20において、外周壁21と接するように配置された外周ハニカムセグメント4a同士を接合する外周接合層6aの接合強度A1が、ハニカムセグメント接合体20のセル2の延びる方向に直交する断面の重心を含む中央ハニカムセグメント4bと、当該中央ハニカムセグメント4bに隣接する他のハニカムセグメント4とを接合する中央接合層6bの接合強度A2よりも大である。 【選択図】図2