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    EXHAUST GAS PURIFICATION CONTROL APPARATUS
    2.
    发明公开
    EXHAUST GAS PURIFICATION CONTROL APPARATUS 有权
    排气净化控制装置

    公开(公告)号：EP3073078A3

    公开(公告)日：2016-10-26

    申请号：EP16162260.0

    申请日：2016-03-24

    申请人： Toyota Jidosha Kabushiki Kaisha

    发明人： HABA, Yuki ,  NOZAKI, Yusuke ,  YOSHIDA, Kohei

    IPC分类号： F01N3/08 ,  F01N9/00 ,  F02D41/02

    CPC分类号： F01N3/0871 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1614 ,  F02D41/0275 ,  F02D41/1456 ,  F02D41/1475 ,  F02D2200/0806 ,  F02D2200/0808 ,  F02D2250/36 ,  Y02T10/20 ,  Y02T10/47

    摘要： In an exhaust gas purification control apparatus that includes a NOx storage reduction catalyst (NSR catalyst, or the like) provided in an exhaust system of an internal combustion engine and that carries out rich spike operation in the case where a NOx storage amount in the catalyst exceeds a first threshold, the rich spike operation is started at an exhaust gas air-fuel ratio that is leaner when the NOx storage amount in the catalyst exceeds a second threshold (M2) larger than the first threshold (M1) than when the NOx storage amount is smaller than or equal to the second threshold (M2). With the above configuration, it is possible to suppress the amount of NOx that is released from the catalyst, and it is possible to reduce the amount of flow of untreated NOx, with the result that it is possible to suppress deterioration of exhaust emission.

    摘要翻译： 在包括设置在内燃机的排气系统中的NOx存储还原催化剂（NSR催化剂等）并且在催化剂中的NOx存储量的情况下执行浓峰值运行的排气净化控制装置 超过第一阈值时，当催化剂中的NOx存储量超过比第一阈值（M1）大的第二阈值（M2）时，比当存储NOx时更稀的排气空燃比开始浓峰值操作 量小于或等于第二阈值（M2）。 通过以上的结构，能够抑制从催化剂放出的NO X量，能够减少未处理NO X的流量，能够抑制废气排放的恶化。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    4.
    发明公开
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号：EP3036412A1

    公开(公告)日：2016-06-29

    申请号：EP14747991.9

    申请日：2014-06-27

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： HABA, Yuki ,  YOSHIDA, Kohei ,  NOZAKI, Yusuke

    IPC分类号： F01N3/08 ,  F01N3/20 ,  F02D41/02 ,  F02D41/14

    CPC分类号： F02D41/0275 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2066 ,  F01N3/208 ,  F01N2370/02 ,  F01N2430/06 ,  F01N2610/03 ,  F01N2900/0412 ,  F01N2900/0422 ,  F01N2900/1602 ,  F01N2900/1614 ,  F01N2900/1622 ,  F02D41/1454 ,  F02D41/1475 ,  F02D2200/0806 ,  F02D2200/0808 ,  Y02T10/24

    摘要： In an internal combustion engine, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged in an engine exhaust passage. A first NO
    X removal method which injects hydrocarbons from the hydrocarbon feed valve (15) within a predetermined range of period so that the reducing intermediate generated thereby reduces the NO
    X contained in the exhaust gas and a second NO
    X removal method which makes the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) a first target rich air-fuel ratio by a period which is longer than this predetermined range are used. When the NO
    X removal method is switched from the second NO
    X removal method to the first NO
    X removal method, the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) is made a second target air-fuel ratio which is smaller than the first target rich air-fuel ratio.

    摘要翻译： 在内燃机中，烃供给阀（15）和排气净化催化剂（13）被布置在发动机排气通道中。 第一NOx去除方法，其在预定的时间段内从烃供给阀（15）注入烃，使得由此产生的还原中间物减少包含在排气中的NOx;以及第二NOx去除方法，其使得空气 将流入排气净化催化剂（13）的排气的第一目标浓空燃比比该规定范围长的时间段的燃料比设为燃料比。 在将NO X去除方法从第二NO X去除方法切换为第一NO X去除方法时，将流入排气净化催化剂（13）的排气的空燃比设为第二目标空燃比 小于第一目标浓空燃比。