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    Exhaust gas purifying catalyst and process of producing the same
    1.
    发明公开
    Exhaust gas purifying catalyst and process of producing the same 有权
    Katalysator zur Reinigung von Abgas und Verfahrenfürseine Herstellung

    公开(公告)号：EP0895812A1

    公开(公告)日：1999-02-10

    申请号：EP98114817.4

    申请日：1998-08-06

    申请人： Mazda Motor Corporation

    发明人： Kurokawa, Takahiro ,  Watanabe, Yasuto ,  Ueoka, Toshitsugu ,  Takayama, Osamu ,  Koda, Yuki

    IPC分类号： B01J37/02 ,  B01J29/06 ,  B01J29/03 ,  B01D53/94

    CPC分类号： B01D53/945 ,  B01J29/061 ,  B01J37/0244 ,  B01J37/0246 ,  Y02A50/2324 ,  Y02T10/22

    摘要： An exhaust gas purifying catalyst is comprised of a mixture of a meso-porous composite having an approximately uniform size of meso-pores and, if desirable, supporting ceria thereon and a catalytic component of an active metal supported on zeolite by an ion-exchanged method or comprised of an under layer of a meso-porous composite having an approximately uniform size of meso-pores and, if desirable, supporting ceria thereon and an over layer of a catalytic component of an active metal supported on zeolite by an ion-exchanged method.

    摘要翻译： 废气净化催化剂由具有大致均匀尺寸的中孔的中孔多孔复合材料的混合物组成，并且如果需要的话，在其上支撑二氧化铈和通过离子交换法负载在沸石上的活性金属的催化组分 或由具有近似均匀尺寸的中孔的中孔多孔复合材料的底层组成，并且如果需要的话，在其上支撑二氧化铈和通过离子交换法负载在沸石上的活性金属的催化组分的上层 。

    Combustion engine exhaust purifying catalyst
    8.
    发明公开
    Combustion engine exhaust purifying catalyst 有权
    一种用于内燃发动机的废气净化催化剂

    公开(公告)号：EP0922485A3

    公开(公告)日：2000-02-09

    申请号：EP98123451.1

    申请日：1998-12-11

    申请人： MAZDA MOTOR CORPORATION

    发明人： Kurokawa, Takahiro ,  Watanabe, Yasuto ,  Ueoka, Toshitsugu ,  Murakami, Hiroshi

    IPC分类号： B01D53/94 ,  B01J29/06 ,  B01J23/10

    CPC分类号： B01D53/9454 ,  B01J37/0244 ,  B01J37/0246 ,  Y02T10/22

    摘要： In an exhaust gas purifying catalyst according to the present invention, an inner catalytic layer 3 and an outer catalytic layer 4 are disposed on a surface of a substratum 2. Hereupon, the inner catalytic layer 3 includes ceria 5. On the other hand, the outer catalytic layer 4 includes a catalyst in which Pt 7 is supported on zeolite 6 by ion exchange process. Thus, there is provided a catalyst which can effectively purify NOx in exhaust gas under the condition of so-called lean atmosphere in which oxygen concentration in the exhaust gas is higher than that corresponding to theoretical air-fuel ratio, without using so much amount of expansive materials.

    Engine exhaust gas purification apparatus
    10.
    发明公开
    Engine exhaust gas purification apparatus 有权
    发动机废气净化装置

    公开(公告)号：EP1387071A1

    公开(公告)日：2004-02-04

    申请号：EP03013478.7

    申请日：2003-06-25

    申请人： Mazda Motor Corporation

    发明人： Hayashibara, Hiroshi ,  Saito, Tomoaki ,  Kataoka, Motoshi ,  Shoya, Taizou ,  Tsushio, Yoshinori ,  Ueoka, Toshitsugu ,  Harada, Kouichiro

    IPC分类号： F02D41/04 ,  F02D41/40 ,  F01N3/023

    CPC分类号： F01N3/023 ,  F01N3/035 ,  F01N13/009 ,  F01N2430/06 ,  F02B29/0406 ,  F02B37/00 ,  F02B2275/14 ,  F02D41/029 ,  F02D41/405 ,  F02M26/05 ,  Y02T10/123 ,  Y02T10/44

    摘要： An oxidation catalyst 12 is disposed in an exhaust passage 11 positioned upstream of a DPF 13. When the temperatures of the oxidation catalyst 12 and the DPF 13 are low, a post-injection timing is advanced and a post-injection fuel is combusted in a cylinder, thereby preventing the post-injection fuel from flowing into and being deposited in the DPF 13 and, also, implementing quick rise of the temperatures of the oxidation catalyst 12 and the DPF 13 by raising an exhaust gas temperature. After the temperature of the oxidation catalyst 12 has reached a high level, the post-injection timing is retarded. Then, the post-injection fuel is fed to the oxidation catalyst 12 and catalytic reaction heat generated therein is utilized to implement raise of the temperature of the DPF 13 .

    摘要翻译： 氧化催化剂12配置在位于DPF13的上游侧的排气通路11内。氧化催化剂12和DPF13的温度低时，后喷射时间提前，后喷射燃料在 由此防止后喷射燃料流入并沉积在DPF 13中，并且还通过提高排气温度实现氧化催化剂12和DPF 13的温度的快速升高。 在氧化催化剂12的温度达到高水平后，后喷射正时被延迟。 然后，将后喷射燃料供给到氧化催化剂12，利用其中产生的催化反应热来实现DPF13的温度上升。