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    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的排气净化装置

    公开(公告)号：US20160303512A1

    公开(公告)日：2016-10-20

    申请号：US15098633

    申请日：2016-04-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kazuhiko ITOH ,  Hiromasa NISHIOKA ,  Yoshihisa TSUKAMOTO ,  Hiroshi OHTSUKI ,  Yasumasa NOTAKE

    IPC: B01D53/94

    CPC classification number: B01D53/9495 ,  B01D53/9418 ,  B01D2251/2067 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/911 ,  B01D2258/012 ,  B01J23/002 ,  B01J23/34 ,  B01J29/072 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2229/186 ,  B01J2523/00 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N2510/06 ,  F01N2900/1411 ,  F01N2900/1602 ,  F01N2900/1818 ,  Y02T10/24 ,  Y02T10/47 ,  B01J2523/3712 ,  B01J2523/43 ,  B01J2523/72

    Abstract: An object is to provide technology that enables an NOx catalyst to exercise its NOx reduction capability satisfactorily at any flow speed of the exhaust gas flowing into the NOx catalyst. An exhaust gas purification apparatus for an internal combustion engine includes a selective catalytic reduction NOx catalyst including at least a first catalyst layer having capability of reducing NOx and a second catalyst layer having oxidation capability and arranged closer to a catalyst substrate than the first catalyst layer. The apparatus has a supply valve for adding a specific addition quantity of reducing agent for reducing NOx to inflowing exhaust gas flowing into the selective catalytic reduction NOx catalyst. The apparatus further has a controller that is configured to control addition of the reducing agent by the supply valve based on the flow speed of the inflowing exhaust gas in such a way that the concentration of the reducing agent in a reducing agent atmosphere formed in the inflowing exhaust gas in a reducing agent addition period becomes equal to a specific concentration that is determined based on the flow speed of the inflowing exhaust gas and at which the reducing agent is assumed not to reach the second catalyst layer, when the temperature of the selective catalytic reduction NOx catalyst exceeds a specific temperature at which reduction of NOx by the first catalyst layer is carried out.

    Abstract translation: 本发明的目的是提供使NOx催化剂在流入NOx催化剂的废气的任何流速下令人满意地运行其NOx还原能力的技术。 一种内燃机的废气净化装置，具备选择性催化还原型NOx催化剂，其至少具有能够还原NO x的第一催化剂层和具有氧化能力的第二催化剂层，并且比第一催化剂层更靠近催化剂基板。 该装置具有用于向流入选择性催化还原NOx催化剂的流入废气中添加特定添加量的用于还原NOx的还原剂的供给阀。 该装置还具有控制器，其被配置为基于流入废气的流速控制供给阀的还原剂的添加，使得在流入中形成的还原剂气氛中的还原剂的浓度 还原剂添加期间的排气变得等于基于流入废气的流速确定的特定浓度，并且假定还原剂不会到达第二催化剂层时，选择催化剂的温度 还原NOx催化剂超过由第一催化剂层进行NOx还原的特定温度。

    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的排气净化装置

    公开(公告)号：US20160281565A1

    公开(公告)日：2016-09-29

    申请号：US15030724

    申请日：2014-08-26

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiromasa NISHIOKA ,  Kazuhiro ITO ,  Yoshihisa TSUKAMOTO ,  Hiroshi OTSUKI ,  Yasumasa NOTAKE ,  Daichi IMAI ,  Ryota KOUTAKE

    IPC: F01N3/08 ,  F01N3/20

    CPC classification number: F01N3/0814 ,  F01N3/0842 ,  F01N3/2013 ,  F01N3/2066 ,  F01N2410/06 ,  F01N2900/1631 ,  Y02T10/26

    Abstract: An exhaust purification device for an internal combustion engine is provided with an NOx adsorbent for adsorbing NOx in exhaust gas and an NOx purifying catalyst for purifying NOx in exhaust gas, which are arranged in an engine exhaust passage. An electric heater is provided for raising the temperature of the NOx adsorbent. When a signal requesting startup of an internal combustion engine is issued, the device starts to supply electric power to the electric heater before the internal combustion engine completely warms up, and supplies the electric heater with a quantity of electric power making the temperature of the NOx adsorbent equal to or higher than the moisture desorption temperature but lower than the NOx desorption temperature.

    Abstract translation: 内燃机的排气净化装置具备吸附排气中的NOx的NOx吸附剂和配置在发动机排气通路内的排气净化用NOx净化用催化剂。 提供用于提高NOx吸附剂的温度的电加热器。 当发出请求启动内燃机的信号时，在内燃机完全升温之前，该装置开始向电加热器供电，并向电加热器供电一定量的电力，使得NOx的温度 吸附剂等于或高于湿气解吸温度，但低于NOx解吸温度。

    EXHAUST GAS PURIFICATION FILTER
    8.
    发明申请
    EXHAUST GAS PURIFICATION FILTER 审中-公开
    排气净化过滤器

    公开(公告)号：US20160138448A1

    公开(公告)日：2016-05-19

    申请号：US14896725

    申请日：2014-06-03

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kazuhiro ITOH ,  Hiromasa NISHIOKA ,  Daichi IMAI ,  Yoshihisa TSUKAMOTO ,  Hiroshi OTSUKI ,  Yasumasa NOTAKE

    IPC: F01N3/035 ,  B01D53/94 ,  F01N3/022

    CPC classification number: F01N3/035 ,  B01D46/2429 ,  B01D53/94 ,  B01D2046/2437 ,  B01D2275/307 ,  F01N3/0222 ,  F01N3/0232 ,  F01N2510/0682

    Abstract: An exhaust gas purification filter includes an inflow/outflow passage through which exhaust gas flows in/out, and a partition. The outflow passage and the inflow passage is alternately arranged. The partition is configured to divide the inflow passage and the outflow passage from each other, and being porous. The partition includes a coated zone where a surface of a base of the partition is covered with a first coating layer having an average pore diameter smaller than an average pore diameter of the base, and a non-coated zone where the surface of the base is not covered with the first coating layer on a downstream side of the coated zone. The average pore diameter of the base is large enough for ash to pass through the partition, and the first coating layer is constituted by a plurality of particle groups with different average particle diameters from each other.

    Abstract translation: 废气净化过滤器包括废气流入/流出的流入/流出通道和分隔件。 流出通道和流入通道交替布置。 所述分隔构造成将所述流入通道和所述流出通路彼此分开，并且是多孔的。 隔壁包括涂覆区域，其中隔板的基部的表面覆盖有平均孔径小于基底的平均孔径的第一涂层，以及基底表面的非涂覆区域 未被涂覆区的下游侧的第一涂层覆盖。 基体的平均孔径足够大以使灰分通过隔壁，第一涂层由平均粒径不同的多个粒子组构成。

    SELECTIVE NOx REDUCTION CATALYST
    10.
    发明申请
    SELECTIVE NOx REDUCTION CATALYST 审中-公开
    选择性NOx还原催化剂

    公开(公告)号：US20160363024A1

    公开(公告)日：2016-12-15

    申请号：US15119004

    申请日：2015-02-23

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroshi OTSUKI ,  Hiromasa NISHIOKA ,  Yoshihisa TSUKAMOTO ,  Yasumasa NOTAKE

    IPC: F01N3/20 ,  B01D53/94 ,  B01J29/072

    CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01J29/064 ,  B01J29/072 ,  B01J29/76 ,  B01J35/0006 ,  B01J35/0073 ,  B01J35/008 ,  B01J35/0086 ,  B01J37/30 ,  B01J2029/062 ,  B01J2229/183 ,  B01J2229/186 ,  F01N2370/02 ,  F01N2370/04 ,  F01N2610/02 ,  Y02T10/24

    Abstract: A NOx catalyst is provided that can realize a favorable NOx reduction in a broad temperature region and that can lighten the overhead involved in production. The NOx catalyst has active components exhibiting a selective reduction activity for NOx, wherein the active components exhibiting the selective reduction activity contains a high-temperature active component having a relatively high NOx reduction activity at high temperatures and a low-temperature active component having a relatively high NOx reduction activity at low temperatures; and the high-temperature active component and the low-temperature active component are disposed in a mixed state in a primary particle of the catalyst particle, and an active component ratio on a surface side of the primary particle is larger than an active component ratio on an interior side of the primary particle, with the active component ratio being is a ratio of a concentration of the high-temperature active component to a concentration of the low-temperature active component in the primary particle.

    Abstract translation: 提供了可以在宽温度区域实现有利的NOx还原并且可以减轻生产中涉及的开销的NOx催化剂。 NOx催化剂具有对NO x具有选择还原活性的活性组分，其中表现出选择性还原活性的活性组分含有在高温下具有较高NO x降低活性的高温活性组分和具有相对较低的NO x还原活性组分 低NOx降低活性; 并且高温活性成分和低温活性成分以混合状态设置在催化剂粒子的一次粒子中，初级粒子的表面侧的活性成分比大于活性成分比 一次粒子的内侧，活性成分比是高温活性成分的浓度与一次粒子中低温活性成分的浓度的比例。

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