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    Exhaust purification device and exhaust purification method of internal combustion engine
    5.
    发明授权
    Exhaust purification device and exhaust purification method of internal combustion engine 有权
    内燃机排气净化装置及排气净化方法

    公开(公告)号：US07685812B2

    公开(公告)日：2010-03-30

    申请号：US10537748

    申请日：2004-10-04

    申请人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma ,  Yasuaki Nakano ,  Shunsuke Toshioka

    发明人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma ,  Yasuaki Nakano ,  Shunsuke Toshioka

    IPC分类号： F01N3/00

    CPC分类号： F02D41/0275 ,  B01D53/9481 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/0871 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/024 ,  F02D2200/0802 ,  F02D2200/0806 ,  Y02A50/2345 ,  Y02T10/26

    摘要： A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.

    摘要翻译： 包含贵金属催化剂（46）和NOx吸收剂（47）的NOx储存催化剂（11）布置在排气通道中。 当排气的空燃比为稀时，当催化剂不活动时，储存催化剂冷存储在吸收剂中的排气中的NO 2，并且当催化剂活化时，将热的储存的NO 2储存在吸收剂中。 当催化剂未被活化时，排气中含有的NO2被冷藏在吸收剂中，并且当满足预定的NOx储存催化剂恢复条件（107）时，存储催化剂复原控制（109,115）包括提高NOx储存 催化剂温度达到预定温度以使其活化（109），以恢复NOx吸收剂的冷藏能力。

    Exhaust purification device and exhaust purification method of internal combustion engine
    6.
    发明申请
    Exhaust purification device and exhaust purification method of internal combustion engine 有权
    内燃机排气净化装置及排气净化方法

    公开(公告)号：US20060037312A1

    公开(公告)日：2006-02-23

    申请号：US10537748

    申请日：2004-10-04

    申请人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma ,  Yasuaki Nakano ,  Shunsuke Toshioka

    发明人： Kohei Yoshida ,  Shinya Hirota ,  Takamitsu Asanuma ,  Yasuaki Nakano ,  Shunsuke Toshioka

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F02D41/0275 ,  B01D53/9481 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/0871 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/024 ,  F02D2200/0802 ,  F02D2200/0806 ,  Y02A50/2345 ,  Y02T10/26

    摘要： A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.

    摘要翻译： 包含贵金属催化剂（46）和NO x吸收剂（47）的NO x x存储催化剂（11）布置在排气通道中。 当废气的空燃比为稀时，当催化剂不活动时，储存催化剂冷存储在吸收剂中排气中的NO 2，并且热存储冷存储的NO 当催化剂活化时，在吸收剂中。 当催化剂未被活化时，排气中含有的NO 2 2被冷藏在吸收剂中，并且当满足预定的存储催化剂还原条件（107）时， 执行包括使存储催化剂温度升高到预定温度以使其活化（109）的存储催化剂恢复控制（109,115）的NO X ，以便恢复 NO x吸收剂的冷藏能力。

    Exhaust gas purification apparatus for internal combustion engine
    10.
    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：US09199197B2

    公开(公告)日：2015-12-01

    申请号：US12087509

    申请日：2007-09-06

    申请人： Kohei Yoshida ,  Yasuaki Nakano ,  Tadashi Watanabe ,  Kotaro Hayashi ,  Takamitsu Asanuma

    发明人： Kohei Yoshida ,  Yasuaki Nakano ,  Tadashi Watanabe ,  Kotaro Hayashi ,  Takamitsu Asanuma

    IPC分类号： F01N3/28 ,  B01D53/94 ,  F01N3/08 ,  F01N13/00

    CPC分类号： B01D53/9422 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0821 ,  F01N13/009 ,  F01N13/0093 ,  Y02C20/10

    摘要： A fuel addition valve that adds fuel into the exhaust gas passage of the engine in the form of fine fuel droplets, an upstream NOx adsorption-reduction catalyst, and a downstream NOx adsorption-reduction catalyst are arranged in this order. Platinum Pt and palladium Pd, as noble metal, are supported on the downstream NOx adsorption-reduction NOx catalyst such that the ratio of the mole number of the platinum Pt to the sum of the mole numbers of the platinum Pt and the palladium Pd is approx. 50% to approx. 80%. Only platinum Pt is supported on the upstream NOx adsorption-reduction catalyst. According to this structure, even when liquid fuel is supplied into exhaust gas, NOx can be effectively released from the NOx adsorption-reduction catalyst, and further the amount of NOx that the NOx adsorption-reduction catalyst can adsorb at a low temperature increases.

    摘要翻译： 按照该顺序排列燃料添加阀，其将燃料添加到发动机的废气通道中，其形式为精细的燃料液滴，上游的NOx吸附还原催化剂和下游的NOx吸附还原催化剂。 作为贵金属的铂Pt和钯Pd负载在下游NOx吸附还原NOx催化剂上，使得铂Pt的摩尔数与铂Pt和钯Pd的摩尔数的和的比率约为 。 50％〜约 80％。 在上游NOx吸附还原催化剂上仅负载铂Pt。 根据该结构，即使向排气供给液体燃料，也可以从NOx吸附还原催化剂中有效地释放NOx，并且进一步降低NOx吸附还原催化剂在低温下吸附的NOx量。