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    Exhaust gas purification apparatus for internal combustion engine
    4.
    发明授权
    Exhaust gas purification apparatus for internal combustion engine 有权
    内燃机废气净化装置

    公开(公告)号：US09238985B2

    公开(公告)日：2016-01-19

    申请号：US14409652

    申请日：2012-06-20

    申请人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

    发明人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

    IPC分类号： G01N21/00 ,  F01N3/20 ,  B01D53/94

    CPC分类号： F01N3/208 ,  B01D53/9431 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/0601 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

    摘要： To estimate an amount of reducing agent adsorbed to a selective reduction type NOx catalyst with a higher degree of precision, an amount of variation over a predetermined time in a reducing agent amount adsorbed to a selective reduction type NOx catalyst is calculated from an upper limit value of a reducing agent amount that is adsorbed to the selective reduction type NOx catalyst when the reducing agent is supplied continuously by a supply unit, which is calculated on the basis of a temperature of the selective reduction type NOx catalyst, and the reducing agent amount adsorbed to the selective reduction type NOx catalyst, whereupon a reducing agent amount adsorbed to the selective reduction type NOx catalyst following the elapse of the predetermined time is estimated by adding the variation amount to the reducing agent amount adsorbed to the selective reduction type NOx catalyst.

    摘要翻译： 为了以更高的精度估计吸附到选择还原型NOx催化剂的还原剂的量，从吸附到选择还原型NOx催化剂的还原剂量中的预定时间内的变化量从上限值 当由选择还原型NOx催化剂的温度计算的供应单元连续供给还原剂时吸附到选择还原型NOx催化剂上的还原剂量和还原剂吸附量的还原剂量 涉及选择还原型NOx催化剂，通过将吸附在选择还原型NOx催化剂上的还原剂量的变化量加到预定时间后吸附到选择还原型NOx催化剂上的还原剂量来估计。

    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
    5.
    发明申请
    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE 审中-公开
    用于内燃机的排气净化装置

    公开(公告)号：US20150238904A1

    公开(公告)日：2015-08-27

    申请号：US14409692

    申请日：2012-06-20

    申请人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

    发明人： Keishi Takada ,  Shunsuke Toshioka ,  Shigeki Nakayama ,  Ichiro Yamamoto ,  Junya Nakajima

    IPC分类号： B01D53/94

    CPC分类号： B01D53/9495 ,  B01D53/9431 ,  F01N3/208 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0416 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24

    摘要： To estimate an amount of reducing agent adsorbed to a selective reduction type NOx catalyst with a higher degree of precision while maintaining a condition in which NOx can be purified by the selective reduction type NOx catalyst, the present invention includes: an upper limit value calculation unit that calculates an upper limit value of a reducing agent amount that is adsorbed to the selective reduction type NOx catalyst when the reducing agent is supplied continuously during a steady state operation in an internal combust ion engine; and an estimation unit that estimates an upper limit value calculated by the upper limit value calculation unit when the reducing agent is supplied for at least a predetermined time during the steady state operation in the internal combustion engine to be the reducing agent amount adsorbed to the selective reduction type NOx catalyst at that time.

    摘要翻译： 为了在保持能够通过选择还原型NOx催化剂净化NOx的条件的同时，以更高的精度估计吸附到选择还原型NOx催化剂的还原剂的量，本发明包括：上限值计算单元 计算在内部燃烧式离子发动机的稳态运行中连续供给还原剂时吸附到所述选择还原型NOx催化剂的还原剂量的上限值; 以及估计单元，其估计在所述内燃机的稳态运行期间将所述还原剂供给至少预定时间时由所述上限值计算单元计算的上限值作为所述选择性吸附剂的还原剂量 此时还原型NOx催化剂。