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    EXHAUST GAS CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    EXHAUST GAS CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的排气控制装置

    公开(公告)号：US20150176514A1

    公开(公告)日：2015-06-25

    申请号：US14416709

    申请日：2012-07-27

    申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Kenji Sakurai ,  Kohki Nakamura

    发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Kenji Sakurai ,  Kohki Nakamura

    IPC分类号： F02D41/14 ,  F01N3/20

    CPC分类号： F02D41/1461 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/101 ,  F01N3/206 ,  F01N13/009 ,  F01N2900/1614 ,  F02D41/0275 ,  F02D41/1475 ,  F02D2250/36 ,  F02M26/15 ,  Y02T10/22

    摘要： A three-way catalyst and an NOx adsorption catalyst are disposed in an engine exhaust passage. In a predetermined low-load engine operation area, combustion in a combustion chamber is carried out at a lean base air-fuel ratio and an air-fuel ratio in the combustion chamber is changed to a rich range at the time of discharging NOx from the NOx adsorption catalyst. In a predetermined high-load engine operation area, the air-fuel ratio in the combustion chamber is controlled to a theoretical air-fuel ratio in a feedback manner. In a predetermined middle-load engine operation area, the combustion in the combustion chamber is carried out at the base air-fuel ratio lower than the base air-fuel ratio in the low-load engine operation area and the air-fuel ratio in the combustion chamber is changed to the rich range with a period shorter than a rich period of the air-fuel ratio for discharging NOx in the low-load engine operation area.

    摘要翻译： 在发动机排气通道中设置三元催化剂和NOx吸附催化剂。 在预定的低负荷发动机运转区域中，以稀空燃比进行燃烧室的燃烧，燃烧室内的空燃比在从NOx排出时变为浓范围 NOx吸附催化剂。 在预定的高负荷发动机运转区域中，以反馈方式将燃烧室内的空燃比控制在理论空燃比。 在预定的中压发动机运转区域中，在低负荷发动机运转区域内的燃料的空燃比低于基本空燃比的燃料的燃烧， 将燃烧室变更为在低负荷发动机运转区域内排出NOx的空燃比的周期短的期间。

    EXHAUST PURIFICATION SYSTEM OF SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE (AS AMENDED)
    4.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE (AS AMENDED) 有权
    火花点火型内燃机排气净化系统（已修订）

    公开(公告)号：US20150240733A1

    公开(公告)日：2015-08-27

    申请号：US14423713

    申请日：2012-08-28

    申请人： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kenji Sakurai ,  Kohki Nakamura

    发明人： Mikio Inoue ,  Kohei Yoshida ,  Yuki Bisaiji ,  Kenji Sakurai ,  Kohki Nakamura

    IPC分类号： F02D41/02 ,  F01N9/00 ,  F01N3/20

    CPC分类号： F02D41/0295 ,  F01N3/0253 ,  F01N3/101 ,  F01N3/20 ,  F01N9/00 ,  F01N9/002 ,  F01N2430/06 ,  F01N2610/03 ,  F01N2610/105 ,  F01N2900/1811 ,  F02D41/0275 ,  F02D41/1475 ,  F02D2200/0806 ,  Y02T10/22 ,  Y02T10/47

    摘要： A three-way catalyst (20) having an oxygen storage function and an exhaust purification catalyst (22) are arranged in the exhaust passage of an internal combustion engine. During medium-load operation of the engine the degree of lean of the air-fuel ratio in the combustion chamber (5) is increased so as to increase the oxygen storage amount of the three-way catalyst (20) to the maximum oxygen storage amount, and the air-fuel ratio in the combustion chamber (5) even after the oxygen storage amount of the three-way catalyst (20) has reached the maximum oxygen, storage amount is maintained at lean, after which the air-fuel ratio is returned to rich, and at this time, as the amount of poisoning of a noble metal catalyst when the air-fuel ratio in the combustion chamber (5) is rich increases, the amount of time for which the air-fuel ratio in the combustion chamber (5) is maintained at lean is increased.

    摘要翻译： 具有储氧功能的三元催化剂（20）和排气净化催化剂（22）布置在内燃机的排气通道中。 在发动机的中负荷运转时，燃烧室（5）中的空燃比的倾斜度增加，以将三元催化剂（20）的储氧量增加到最大储氧量 ，即使在三元催化剂（20）的储氧量达到最大氧气之后，燃烧室（5）中的空燃比保持在稀薄，空燃比为 这时，当燃烧室（5）中的空燃比变浓时，贵金属催化剂的中毒量增加，燃烧时的空燃比的时间 维持在倾斜的腔室（5）增加。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    8.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号：US20150224446A1

    公开(公告)日：2015-08-13

    申请号：US14130414

    申请日：2012-09-10

    申请人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue ,  Kohki Nakamura

    发明人： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue ,  Kohki Nakamura

    IPC分类号： B01D53/94 ,  F01N3/20

    CPC分类号： B01D53/9431 ,  F01N3/021 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2066 ,  F01N2610/03 ,  F01N2610/144 ,  F01N2610/1453 ,  F01N2900/1808

    摘要： An internal combustion engine wherein an exhaust purification catalyst and hydrocarbon feed valve are arranged in an engine exhaust passage and wherein the NOX which is contained in the exhaust gas is removed by injection of hydrocarbons from the hydrocarbon feed valve by a predetermined period. Hydrocarbons are injected from the hydrocarbon feed valve toward the upstream side of the engine exhaust passage. When hydrocarbons are injected from the hydrocarbon feed valve by a predetermined period, the injection pressure of the hydrocarbons is made to gradually fall from injection start to injection end in the injection time period of each injection.

    摘要翻译： 一种内燃机，其中排气净化催化剂和烃供给阀布置在发动机排气通道中，并且其中通过从烃进料阀注入烃预定时间段来排除废气中所含的NO x。 碳氢化合物从烃进料阀向发动机排气通道的上游侧注入。 当从烃进料阀注入烃类预定时间时，在每次注射的喷射时间段内使烃的喷射压力从喷射开始到喷射结束逐渐下降。

    Exhaust purification system of internal combustion engine
    9.
    发明授权
    Exhaust purification system of internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号：US09494072B2

    公开(公告)日：2016-11-15

    申请号：US14116502

    申请日：2013-02-20

    申请人： Kenji Sakurai ,  Kohei Yoshida ,  Yuki Bisaiji ,  Shigeki Nakayama

    发明人： Kenji Sakurai ,  Kohei Yoshida ,  Yuki Bisaiji ,  Shigeki Nakayama

    IPC分类号： F01N3/00 ,  F01N9/00 ,  F02D41/00 ,  F01N3/10 ,  F02D41/02 ,  F02D41/14 ,  F01N3/08

    CPC分类号： F01N9/00 ,  F01N3/0842 ,  F01N3/101 ,  F01N2510/0684 ,  F01N2900/08 ,  F02D41/0052 ,  F02D41/0275 ,  F02D41/1454 ,  F02D41/1475 ,  F02D2200/0806 ,  F02D2200/0814 ,  Y02T10/22

    摘要： A three way catalyst and an NOx storage catalyst are arranged in an engine exhaust passage. In an engine low load operating region, a combustion is performed under a lean air-fuel ratio, and when NOx should be released from the NOx storage catalyst, the air-fuel ratio in a combustion chamber is made rich. In an engine medium load operating region, the base air-fuel ratio is made lower as compared with the engine low load operating region, and the air-fuel ratio in the combustion chamber is made rich at a shorter period as compared with the engine low load operating region. When the operating state of the engine is switched from the engine low load operating region to the engine medium load operating region, the air-fuel ratio in the combustion chamber is temporarily made rich, and the degree of richness of the air-fuel ratio at this time is stepwise lowered.

    摘要翻译： 在发动机排气通道中布置有三元催化剂和NOx储存催化剂。 在发动机低负荷运转区域中，在稀空燃比下进行燃烧，当从NOx吸留催化剂释放NOx时，燃烧室内的空燃比变浓。 在发动机中负荷运转区域中，与发动机低负荷运转区域相比基本空燃比变低，与发动机低位相比，燃烧室中的空燃比较短 负载工作区域。 当发动机的运转状态从发动机低负荷运转区域切换到发动机中负荷运转区域时，燃烧室内的空燃比暂时变浓，空燃比的丰富度在 这一次逐步降低。