Exhaust purification device and exhaust purification method of internal combustion engine
    12.
    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

    IPC分类号: F01N3/00 F01N3/10

    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 SYSTEM FOR INTERNAL COMBUSTION ENGINE
    13.
    发明申请
    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20130058832A1

    公开(公告)日:2013-03-07

    申请号:US13640231

    申请日:2010-04-08

    IPC分类号: F01N3/18 G05D23/00

    摘要: An exhaust gas purification system is equipped with a burner in an exhaust passage upstream of an exhaust gas purification apparatus and having a burner combustion chamber in which flame is produced. When the temperature of the exhaust gas purification apparatus is raised, the burner produces flame that extends from the interior of the burner combustion chamber to the interior of the exhaust passage when the flow rate of the exhaust gas is not higher than a predetermined flow rate, and the burner causes the size of the flame to be smaller than when it is determined that the flow rate of the exhaust gas is not higher than the predetermined flow rate or to produce flame only in the interior of the burner combustion chamber when it is determined that the flow rate of exhaust gas is higher than the predetermined flow rate.

    摘要翻译: 废气净化系统在废气净化装置上游的排气通道中配备有燃烧器,并且具有在其中产生火焰的燃烧器燃烧室。 当废气净化装置的温度升高时,当排气的流量不高于预定的流量时,燃烧器产生从燃烧器燃烧室的内部延伸到排气通道的内部的火焰, 并且所述燃烧器导致所述火焰的尺寸小于当确定所述排气的流量不高于所述预定流量时,或者当确定所述燃烧器燃烧室的内部时仅产生火焰 废气的流量高于预定的流量。

    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE
    16.
    发明申请
    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
    内燃机排气净化系统

    公开(公告)号:US20130055703A1

    公开(公告)日:2013-03-07

    申请号:US13696972

    申请日:2010-05-12

    IPC分类号: F01N3/10

    摘要: An object of the present invention is to increase the flexibility in the layout of an exhaust gas purification system for an internal combustion engine including selective catalytic reduction catalyst provided in an exhaust passage of the internal combustion engine and an addition device for supplying reducing agent derived from ammonia to the selective catalytic reduction catalyst, without a deterioration of the performance in reducing nitrogen oxides. To achieve the object, the exhaust gas purification system for an internal combustion engine according to the present invention is configured to supply hydrocarbon at the same time when reducing agent derived from ammonia is supplied to the selective catalytic reduction catalyst, thereby producing reducing agent that is hard to be oxidized by a precious metal catalyst.

    摘要翻译: 本发明的目的在于提高内燃机的排气净化系统的布置灵活性,所述内燃机包括设置在内燃机的排气通路中的选择性催化还原催化剂,以及用于供给源自 氨至选择性催化还原催化剂,而不会降低还原氮氧化物的性能。 为了达到上述目的,本发明的内燃机用废气净化装置,在向选择性催化还原催化剂供给来自氨的还原剂的同时,同时供给烃,由此生成还原剂, 难以被贵金属催化剂氧化。

    Exhaust temperature raising apparatus and method for internal combustion engine
    18.
    发明授权
    Exhaust temperature raising apparatus and method for internal combustion engine 有权
    内燃机排气升温装置及方法

    公开(公告)号:US06634167B1

    公开(公告)日:2003-10-21

    申请号:US09695977

    申请日:2000-10-26

    IPC分类号: F01N300

    摘要: An exhaust temperature raising apparatus for an internal combustion engine includes an exhaust throttle valve that adjusts an amount of flow of an exhaust gas flowing in an exhaust passage, a valve control device for controlling the exhaust throttle valve to a substantially completely closed state at a time when an amount of an unburned fuel component contained in the exhaust gas is to be reduced, an engine air-fuel ratio control device for operating the internal combustion engine at a theoretical air-fuel ratio or a fuel-excess air-fuel ratio when the exhaust throttle valve is controlled to the substantially completely closed state by the valve control device, and a secondary air supply device for supplying a secondary air to an upstream portion of the exhaust passage when the exhaust throttle valve is controlled to the substantially completely closed state by the valve control device.

    摘要翻译: 用于内燃机的排气温度升高装置包括排气节流阀,其调节在排气通道中流动的废气的流量,用于一次控制排气节流阀至基本完全关闭状态的阀控制装置 当要减少包含在废气中的未燃烧燃料成分的量时,用于在理论空燃比或燃料过剩空燃比下操作内燃机的发动机空燃比控制装置 排气节流阀通过阀控制装置控制到基本上完全关闭状态;以及二次空气供应装置,用于当排气节流阀被控制到基本上完全关闭状态时,将二次空气供应到排气通道的上游部分 阀门控制装置。