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

    公开(公告)号:US08534051B2

    公开(公告)日:2013-09-17

    申请号:US12740138

    申请日:2008-12-26

    IPC分类号: F01N3/00

    摘要: An internal combustion engine in an engine exhaust passage of which an exhaust purification catalyst (13) having an oxidation function is arranged and in the engine exhaust passage upstream of the exhaust purification catalyst (13) of which a small-sized oxidation catalyst (14) and a fuel feed valve (15) for feeding fuel to the small-sized oxidation catalyst (14) are arranged. When activating the exhaust purification catalyst (13), the fuel fed from the fuel injector (15) is used to heat the small-sized oxidation catalyst (14) and when the exhaust purification catalyst (13) is further raised in temperature, the fuel fed from the fuel feed valve (15) is increased and reformed fuel is exhausted from the small-sized oxidation catalyst (14).

    摘要翻译: 在排气净化催化剂(13)的上游配置有小型氧化催化剂(14)的发动机排气通路中,具有氧化功能的排气净化催化剂(13)的发动机排气通路内的内燃机, 和用于向小型氧化催化剂(14)供给燃料的燃料供给阀(15)。 当激活排气净化催化剂(13)时,使用从燃料喷射器(15)供给的燃料来加热小型氧化催化剂(14),并且当排气净化催化剂(13)进一步升温时,燃料 从燃料供给阀15供给的重整燃料从小型氧化催化剂(14)排出。

    Exhaust purification device of an internal combustion engine
    2.
    发明授权
    Exhaust purification device of an internal combustion engine 有权
    内燃机排气净化装置

    公开(公告)号:US08141352B2

    公开(公告)日:2012-03-27

    申请号:US12312516

    申请日:2008-04-16

    IPC分类号: F01N3/10

    摘要: In an internal combustion engine, an NOX selective reducing catalyst is arranged in the engine exhaust passage, and an NOX storage catalyst able to store NOX contained in the exhaust gas is arranged at the upstream of the NOX selective reducing catalyst. The NOX storage catalyst is fed with mist fuel, and the NOX stored in the NOX storage catalyst and the fed fuel are used to produce an intermediate product comprising bonded molecules comprised of NH2 and a hydrocarbon molecule more than an equivalent ratio with respect to one NOX molecule. These intermediate products are adsorbed at the NOX selective reducing catalyst, whereby the adsorbed intermediate product reduces the NOX in the exhaust gas.

    摘要翻译: 在内燃机中,在发动机排气通路中配置有NO x选择还原催化剂,在NOX选择还原催化剂的上游配置能够存储废气中的NO x的NO x吸留催化剂。 NO x储存催化剂被供给烟雾燃料,并且使用储存在NO x储存催化剂和供料燃料中的NOX来生产包含由NH 2和烃分子构成的键合分子的中间产物大于等于一种NOX的当量比 分子。 这些中间产物被吸附在NO x选择还原催化剂上,由此吸附的中间产物减少废气中的NO x。

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

    公开(公告)号:US20090266057A1

    公开(公告)日:2009-10-29

    申请号:US12312516

    申请日:2008-04-16

    IPC分类号: F01N9/00 F01N3/035 F01N3/10

    摘要: In an internal combustion engine, an NOX selective reducing catalyst is arranged in the engine exhaust passage, and an NOX storage catalyst able to store NOX contained in the exhaust gas is arranged at the upstream of the NOX selective reducing catalyst. The NOX storage catalyst is fed with mist fuel, and the NOX stored in the NOX storage catalyst and the fed fuel are used to produce an intermediate product comprising bonded molecules comprised of NH2 and a hydrocarbon molecule more than an equivalent ratio with respect to one NOX molecule. These intermediate products are adsorbed at the NOX selective reducing catalyst, whereby the adsorbed intermediate product reduces the NOX in the exhaust gas.

    摘要翻译: 在内燃机中,在发动机排气通路中配置有NO x选择还原催化剂,在NOX选择还原催化剂的上游配置能够存储废气中的NO x的NO x吸留催化剂。 NO x储存催化剂被供给烟雾燃料,并且使用储存在NO x储存催化剂和供料燃料中的NOX来生产包含由NH 2和烃分子构成的键合分子的中间产物大于等于一种NOX的当量比 分子。 这些中间产物被吸附在NO x选择还原催化剂上,由此吸附的中间产物减少废气中的NO x。

    Exhaust purification device of an internal combustion engine
    5.
    发明授权
    Exhaust purification device of an internal combustion engine 有权
    内燃机排气净化装置

    公开(公告)号:US08297044B2

    公开(公告)日:2012-10-30

    申请号:US12449972

    申请日:2008-03-19

    IPC分类号: F01N3/00

    摘要: In an internal combustion engine, a pair of NOx storing catalysts are arranged in series in an engine exhaust passage. When causing the upstream NOx storing catalyst to release NOx and store the released NOx in the downstream NOx storing catalyst, the oxygen concentration in the exhaust gas is temporarily reduced in a state where the exhaust gas is maintained at a lean air-fuel ratio. As opposed to this, when releasing NOx from the upstream NOx storing catalyst and the downstream NOx storing catalyst and reducing the NOx, the air-fuel ratio of the exhaust gas is temporarily switched from lean to rich.

    摘要翻译: 在内燃机中,一对NOx储存催化剂串联配置在发动机排气通路内。 当使上游NOx储存催化剂释放NOx并将释放的NOx存储在下游NOx存储催化剂中时,在排气维持在稀空燃比的状态下,排气中的氧浓度暂时降低。 与此相反,当从上游NOx存储催化剂和下游NOx存储催化剂释放NOx并还原NOx时,废气的空燃比暂时从稀薄转为浓。

    EXHAUST PURIFICATION DEVICE OF AN INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    EXHAUST PURIFICATION DEVICE OF AN INTERNAL COMBUSTION ENGINE 有权
    内燃机的排气净化装置

    公开(公告)号:US20100115923A1

    公开(公告)日:2010-05-13

    申请号:US12449972

    申请日:2008-03-19

    IPC分类号: F02D43/00 F01N3/10 F01N9/00

    摘要: In an internal combustion engine, a pair of NOx storing catalysts are arranged in series in an engine exhaust passage. When causing the upstream NOx storing catalyst to release NOx and store the released NOx in the downstream NOx storing catalyst, the oxygen concentration in the exhaust gas is temporarily reduced in a state where the exhaust gas is maintained at a lean air-fuel ratio. As opposed to this, when releasing NOx from the upstream NOx storing catalyst and the downstream NOx storing catalyst and reducing the NOx, the air-fuel ratio of the exhaust gas is temporarily switched from lean to rich.

    摘要翻译: 在内燃机中,一对NOx储存催化剂串联配置在发动机排气通路内。 当使上游NOx储存催化剂释放NOx并将释放的NOx存储在下游NOx存储催化剂中时,在排气维持在稀空燃比的状态下,排气中的氧浓度暂时降低。 与此相反,当从上游NOx存储催化剂和下游NOx存储催化剂释放NOx并还原NOx时,废气的空燃比暂时从稀薄转为浓。