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    EXHAUST GAS PURIFICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
    15.
    发明公开
    EXHAUST GAS PURIFICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    用于内燃机的排气净化系统

    公开(公告)号：EP3237731A1

    公开(公告)日：2017-11-01

    申请号：EP15817586.9

    申请日：2015-12-15

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： MIKAMI, Akira ,  NAKAYAMA, Shigeki ,  TAKADA, Keishi ,  OHASHI, Nobumoto ,  MATSUO, Junichi

    IPC分类号： F01N3/08 ,  F01N3/20 ,  F01N3/10 ,  F01N9/00 ,  F01N13/00 ,  F01N3/035 ,  F02D41/02 ,  F01N3/025

    摘要： An exhaust gas purification system comprise a first fuel supply unit to supply fuel to exhaust gas flowing in an exhaust passage by a supply valve arranged in the exhaust passage, and a second fuel supply unit to supply fuel to exhaust gas by adjusting a fuel injection condition wherein in a temperature raising stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, first control is performed in which fuel is supplied by the first fuel supply unit, and in a temperature holding stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, at least second control is performed in which the ratio of an amount of fuel supply by the second fuel supply unit with respect to an amount of fuel supply by the first fuel supply unit becomes higher in comparison with that when performing the first control.

    摘要翻译： 本发明提供一种排气净化系统，其具备：第一燃料供给部，其通过配置在排气通路内的供给阀向在内燃机的排气通路内流动的排气供给燃料;以及第二燃料供给部， 通过调整所述内燃机中的燃料喷射条件来排出要排出到所述排气通路的气体，其中在与所述排气升温处理相关联的所述NOx选择性催化还原催化剂的升温阶段中，执行第一控制，其中， 燃料由第一燃料供应单元供应，并且在与排气升温处理相关联的NOx选择性催化还原催化剂的温度保持阶段中，执行至少第二控制，其中通过第一燃料供应单元的燃料供应量 第二燃料供应单元相对于第一燃料供应单元的燃料供应量变得更高 在执行第一次控制时出现这种情况。

    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
    19.
    发明公开
    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化装置

    公开(公告)号：EP3075975A1

    公开(公告)日：2016-10-05

    申请号：EP14866209.1

    申请日：2014-11-27

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： MIKAMI, Akira ,  NAKAYAMA, Shigeki ,  OHASHI, Nobumoto ,  TAKADA, Keishi ,  MATSUO, Junichi

    IPC分类号： F01N3/08 ,  B01D53/86 ,  B01D53/94

    CPC分类号： F01N3/208 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/9495 ,  F01N9/00 ,  F01N11/002 ,  F01N11/007 ,  F01N13/008 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

    摘要： An exhaust gas purification apparatus for an internal combustion engine comprises: a selective catalytic reduction (SCR) catalyst selectively reducing NOx in an exhaust gas of the internal combustion engine using ammonia as a reducing agent; a supply device adding an additive agent, such as ammonia, to the exhaust gas at an upstream side of the SCR catalyst; and a controller, when a temperature of SCR catalyst is higher than a predetermined temperature, increases a NOx concentration of the exhaust gas flowing into the SCR catalyst and increases an amount of addition of the additive agent in such a manner that a ratio of an amount of ammonia with respect to an amount of NOx contained in the exhaust gas flowing into the SCR catalyst, becomes large, as compared to when the temperature is equal to or less than the predetermined temperature.

    摘要翻译： 一种用于内燃机的排气净化设备包括：选择性催化还原（SCR）催化剂，其使用氨作为还原剂选择性地还原内燃机的排气中的NOx; 在SCR催化剂的上游侧的排气中添加氨等添加剂的供给装置， 控制器在SCR催化剂的温度比规定温度高的情况下，使流入SCR催化剂的排气的NO X浓度上升，并且使添加剂的添加量增加， 相对于流入SCR催化剂的排气中所含的NOx量，与温度为规定温度以下的情况相比，氨变多。