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    Exhaust purification device for internal combustion engine
    1.
    发明授权
    Exhaust purification device for internal combustion engine 有权
    内燃机排气净化装置

    公开(公告)号：US09180410B2

    公开(公告)日：2015-11-10

    申请号：US14345533

    申请日：2011-09-20

    申请人： Takeru Shirasawa ,  Makoto Ogiso ,  Yoshito Nogi

    发明人： Takeru Shirasawa ,  Makoto Ogiso ,  Yoshito Nogi

    IPC分类号： B01D53/94 ,  F01N3/20 ,  F01N3/035

    CPC分类号： B01D53/9495 ,  B01D53/9409 ,  B01D2251/2067 ,  F01N3/035 ,  F01N3/2066 ,  F01N2560/05 ,  F01N2610/02 ,  F01N2610/1493 ,  F01N2900/0408 ,  F01N2900/1404 ,  F01N2900/1411 ,  Y02T10/24

    摘要： A decrease in determination accuracy on filter trouble due to a decrease in detection accuracy of a PM sensor is restricted. A filter, a selective reduction type NOx catalyst provided on a downstream of the filter, the PM sensor detecting an amount of PM on a downstream of the selective reduction type NOx catalyst, and a removal section conducting a process for removing a reducing agent attached to the PM sensor in a case where at least one of conditions is satisfied that a temperature of the selective reduction type NOx catalyst is equal to or lower than a threshold, that a temperature of the exhaust is equal to or lower than a threshold, that a flow rate of the exhaust is equal to or higher than a threshold, and that an adsorption amount of the reducing agent in the selective reduction type NOx catalyst is equal to or larger than a threshold are included.

    摘要翻译： 由于PM传感器的检测精度降低导致的过滤器故障的判定精度的降低受到限制。 设置在过滤器下游的过滤器，选择还原型NOx催化剂，PM传感器检测选择还原型NOx催化剂下游的PM量;以及除去部分，其进行除去还原剂的除去工序 在满足选择还原型NOx催化剂的温度等于或低于阈值的条件中的至少一个，排气温度等于或低于阈值的情况下，PM传感器， 排气的流量等于或高于阈值，并且包括选择还原型NOx催化剂中的还原剂的吸附量等于或大于阈值。

    EXHAUST GAS RECIRCULATION DEVICE OF ENGINE
    3.
    发明申请
    EXHAUST GAS RECIRCULATION DEVICE OF ENGINE 有权

    公开(公告)号：US20110155109A1

    公开(公告)日：2011-06-30

    申请号：US12675656

    申请日：2009-09-03

    申请人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    发明人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    IPC分类号： F02M25/07

    CPC分类号： F02D35/026 ,  F02D41/0065 ,  F02D2250/36 ,  F02M26/05 ,  F02M26/06 ,  F02M35/1038 ,  F02M37/06 ,  Y02T10/47

    摘要： An exhaust gas recirculation device of an engine (10) of the invention comprises a first exhaust gas recirculation passage (50) for connecting an exhaust passage (40) and an intake passage (30) to each other and introducing into the intake passage an exhaust gas discharged from a combustion chamber (21) to the exhaust passage, and a second exhaust gas recirculation passage (55) for connecting the exhaust passage upstream of a part of the exhaust passage connected to the first exhaust gas recirculation passage and the intake passage downstream of a part of the intake passage connected to the first exhaust gas recirculation passage to each other and introducing into the intake passage the exhaust gas discharged from the combustion chamber to the exhaust passage. The amount of the exhaust gas introduced into the intake passage via the first exhaust gas recirculation passage is controlled to a first target exhaust gas recirculation amount and the amount of the exhaust gas introduced into the intake passage via the second exhaust gas recirculation passage is controlled to a second target exhaust gas recirculation amount. When a temperature of the flame on the combustion of a fuel is lower than or equal to an allowable upper limit flame temperature, a first reference exhaust gas recirculation amount set depending on the operation condition of the engine, is set as the first target exhaust gas recirculation amount and a second reference exhaust gas recirculation amount set depending on the operation condition of the engine, is set as the second target exhaust gas recirculation amount. When the temperature of the flame on the combustion of the fuel is higher than the allowable upper limit flame temperature, one of the first reference exhaust gas recirculation gas amount and an amount smaller than the first reference exhaust gas recirculation gas amount is set as the first target exhaust gas recirculation amount and an amount larger than the reference second exhaust gas recirculation amount is set as the second target exhaust gas recirculation amount.

    Exhaust gas recirculation device of engine
    4.
    发明授权
    Exhaust gas recirculation device of engine 有权
    发动机废气再循环装置

    公开(公告)号：US08560213B2

    公开(公告)日：2013-10-15

    申请号：US12675656

    申请日：2009-09-03

    申请人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    发明人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    IPC分类号： B60T7/12 ,  G05D1/00 ,  G06F7/00 ,  G06F17/00 ,  F02M25/07

    CPC分类号： F02D35/026 ,  F02D41/0065 ,  F02D2250/36 ,  F02M26/05 ,  F02M26/06 ,  F02M35/1038 ,  F02M37/06 ,  Y02T10/47

    摘要： An exhaust gas recirculation device of an engine (10) of the invention comprises a first exhaust gas recirculation passage (50) for connecting an exhaust passage (40) and an intake passage (30) to each other and introducing into the intake passage an exhaust gas discharged from a combustion chamber (21) to the exhaust passage, and a second exhaust gas recirculation passage (55) for connecting the exhaust passage upstream of a part of the exhaust passage connected to the first exhaust gas recirculation passage and the intake passage downstream of a part of the intake passage connected to the first exhaust gas recirculation passage to each other and introducing into the intake passage the exhaust gas discharged from the combustion chamber to the exhaust passage. The amount of the exhaust gas introduced into the intake passage via the first exhaust gas recirculation passage is controlled to a first target exhaust gas recirculation amount and the amount of the exhaust gas introduced into the intake passage via the second exhaust gas recirculation passage is controlled to a second target exhaust gas recirculation amount. The amount of exhaust gas introduced into the first and second exhaust gas passages is controlled in accordance with an allowable upper flame temperature.

    摘要翻译： 本发明的发动机（10）的废气再循环装置包括：第一排气再循环通道（50），用于将排气通道（40）和进气通道（30）彼此连接，并将进气通道排出 从燃烧室（21）排出到排气通道的气体和第二排气再循环通路（55），其连接在与第一废气再循环通路连通的排气通路的一部分和下游的进气通路 所述进气通路的一部分与所述第一废气再循环通道相连，并将从所述燃烧室排出的废气引入到所述进气通道中。 经由第一废气再循环通道引入进气通道的排气量被控制到第一目标废气再循环量，并且经由第二废气再循环通道引入进气通道的排气量被控制为 第二目标废气再循环量。 根据允许的上限火焰温度来控制引入第一和第二废气通道的废气量。