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    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE
    22.
    发明公开
    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号：EP2570626A1

    公开(公告)日：2013-03-20

    申请号：EP10851411.8

    申请日：2010-05-14

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： FUKUDA, Koichiro ,  HIROTA, Shinya ,  TOSHIOKA, Shunsuke ,  HOSHI, Sakutaro

    IPC分类号： F01N3/08 ,  B01D53/94

    CPC分类号： F01N3/208 ,  B01D53/90 ,  B01D53/9431 ,  B01D2251/2067 ,  B01D2255/30 ,  B01D2255/50 ,  B01D2255/911 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0408 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24

    摘要： This invention is intended to provide a technique which, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH 3 from passing through a selective reduction type NOx catalyst to a downstream side thereof. In this invention, the selective reduction type NOx catalyst has an active spot which purifies NOx by the use of NH 3 , and an adsorption site which adsorbs NH 3 , wherein a vicinity site, which is located in the vicinity of the active spot, and a distant site, which is located distant from the active spot, exist in the adsorption site. The vicinity site tends to deliver NH 3 to the active spot more easily than the distant site does, and the desorption rate of NH 3 in the vicinity site is faster than the desorption rate of NH 3 in the distant site, and the addition of the reducing agent from the reducing agent addition part is controlled based on the desorption rate of NH 3 in the vicinity site so as to continue to cause the NH 3 adsorbed to the vicinity site to exist.

    摘要翻译： 本发明旨在提供一种技术，其在内燃机的排气净化装置中通过尽可能连续地添加还原剂来避免NOx净化率的降低，同时避免NH 3通过选择性还原 向其下游侧输入NOx型催化剂。 在本发明中，选择还原型NOx催化剂具有利用NH3净化NOx的活性点和吸附NH3的吸附位点，其中位于活性点附近的附近位点和位于活性点附近的远处 位于远离活性点的位置存在于吸附位点。 附近位置倾向于比远处位置更容易地将NH 3传送到活性点，并且附近位点处的NH 3的解吸速率比远处位点处的NH 3的解吸速率更快，并且添加还原剂来自 还原剂添加部分基于附近部位的NH 3的解吸速度进行控制，以继续使附着在附近部位的NH 3存在。

    INTERNAL COMBUSTION ENGINE EXHAUST CLEANING DEVICE
    23.
    发明公开
    INTERNAL COMBUSTION ENGINE EXHAUST CLEANING DEVICE 有权
    内燃机排气净化装置

    公开(公告)号：EP2388451A1

    公开(公告)日：2011-11-23

    申请号：EP09838278.1

    申请日：2009-01-13

    申请人： Toyota Jidosha Kabushiki Kaisha

    发明人： HIROTA, Shinya ,  HOSHI, Sakutaro ,  SASATANI, Toru ,  FUJIMOTO, Hiroshi

    IPC分类号： F01N3/08 ,  F01N3/36

    CPC分类号： F01N3/2066 ,  F01N3/106 ,  F01N3/2033 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2240/16 ,  F01N2240/20 ,  F01N2410/00 ,  F01N2470/02 ,  F01N2470/08 ,  F01N2470/24 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/102 ,  F01N2610/107 ,  Y02T10/24 ,  Y02T10/26

    摘要： An exhaust purification apparatus for an internal combustion engine includes a heating gas generation device configured to generate heating gas utilizing a part of exhaust gas flowing through an exhaust passage, the heating gas generation device including a catalyst with an oxidation function and a fuel supply nozzle configured to supply fuel to the catalyst, a selective reduction NOx catalyst provided downstream of the heating gas generation device, an aqueous-solution-of-urea supply nozzle, and a storage chamber configured so that the heating gas discharged from the catalyst is temporarily stored in the storage chamber and then discharged, the storage chamber being supplied with the aqueous solution of urea from the aqueous-solution-of-urea supply nozzle. Heat in the storage chamber promotes evaporation and hydrolyzation of an aqueous solution of urea supplied, allowing ammonia to be efficiently generated.

    摘要翻译： 本发明提供一种内燃机的排气净化装置，其包括：加热气体生成装置，其利用流过排气通路的排气的一部分来生成加热气体，该加热气体生成装置具备具有氧化功能的催化剂和燃料供给喷嘴 向所述催化剂供给燃料;在所述加热气体生成装置的下游侧设置的选择还原型NOx催化剂;尿素水供给喷嘴;以及储存室，其构成为将从所述催化剂排出的加热气体暂时储存在 储存室然后被排出，储存室被供应来自尿素水供应喷嘴的尿素水溶液。 储存室内的热量促进了所供应的尿素水溶液的蒸发和水解，从而有效地生成氨。