Device for purifying the exhaust gas of an internal combustion engine
    2.
    发明授权
    Device for purifying the exhaust gas of an internal combustion engine 失效
    用于净化内燃机废气的装置

    公开(公告)号:US06438948B2

    公开(公告)日:2002-08-27

    申请号:US09755169

    申请日:2001-01-08

    IPC分类号: F01N302

    摘要: A device for purifying the exhaust gas of an internal combustion engine is disclosed. The device comprises a particulate trap disposed in the engine exhaust system, an exhaust gas recirculation passage communicating the upstream of the particulate trap in the engine exhaust system with the engine intake system, a control valve for controlling the amount of exhaust gas recirculated through the exhaust gas recirculation passage to be an optimum amount in accordance with an engine operating condition. In the device, an amount of the fresh air introduced into the engine intake system during a fuel-cut is detected, and an amount of particulate trapped by the particulate trap is estimated on the basis of the amount of fresh air detected after the control valve is opened to a predetermined opening degree.

    摘要翻译: 公开了一种用于净化内燃机的废气的装置。 该装置包括设置在发动机排气系统中的颗粒捕集器,将发动机排气系统中的颗粒捕集器的上游与发动机进气系统连通的排气再循环通道,用于控制通过排气再循环的废气量的控制阀 气体再循环通道根据发动机工作条件成为最佳量。 在该装置中,检测在燃料切断期间引入到发动机进气系统中的新鲜空气的量,并且基于在控制阀之后检测到的新鲜空气量来估计由颗粒捕集器捕集的微粒量 被打开到预定的开度。

    Exhaust purification system of internal combustion engine
    4.
    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:US08307635B2

    公开(公告)日:2012-11-13

    申请号:US12673950

    申请日:2009-05-07

    IPC分类号: F01N3/10

    摘要: An exhaust purification system of an internal combustion engine that includes a NOx catalyst device which has a reducing material holding ability for holding reducing material and can reduce NOx by using the reducing material; and an electronic control unit that includes program logic, which when executed, determines whether or not a difference between a target amount of reducing material held by the NOx catalyst device and a current amount of reducing material held by the NOx catalyst device is larger than a set amount; and performs a first control or a second control.

    摘要翻译: 一种内燃机的排气净化系统,其包括具有用于保持还原材料的还原材料保持能力并且可以通过使用还原材料来还原NOx的NOx催化剂装置; 以及电子控制单元,其包括程序逻辑,当执行时,判定由所述NOx催化剂装置保持的还原材料的目标量与由所述NOx催化剂装置保持的还原材料的当前量之间的差是否大于 设定量 并执行第一控制或第二控制。

    EXHAUST EMISSION CONTROL DEVICE
    7.
    发明申请
    EXHAUST EMISSION CONTROL DEVICE 有权
    排气排放控制装置

    公开(公告)号:US20100192547A1

    公开(公告)日:2010-08-05

    申请号:US12667767

    申请日:2008-07-04

    IPC分类号: F01N3/10

    摘要: The invention has an object of exerting favorable NOx reducing effects even at an exhaust temperature lower than in the prior art without trouble, e.g., at startup after long-term engine rest and is directed to an exhaust emission control device wherein a selective reduction catalyst 5 capable of selectively reacting NOx with ammonia even in the presence of oxygen is incorporated in an exhaust pipe 4, urea water 6 as reducing agent being added in the pipe 4 upstream of the reduction catalyst 5 to depurate NOx through reduction. It has an oxidation catalyst 9 arranged in the pipe 4 upstream of an added position of the urea water 6, the oxidation catalyst 9 having a feature of physically adsorbing NOx in the exhaust gas at a temperature lower than a lower active limit temperature of the reduction catalyst 5 and discharging the adsorbed NOx at a temperature higher than a lower active limit temperature of the oxidation catalyst 9, and means (a fuel injection device 14) for adding fuel into the exhaust gas 3 upstream of the oxidation catalyst, start of the fuel addition by the fuel addition means being refrained until exhaust temperature on an inlet side of the reduction catalyst 5 is increased to a preset temperature comparable with the lower active limit temperature of the oxidation catalyst 9.

    摘要翻译: 本发明的目的是即使在比现有技术更低的排气温度下也能产生有利的NOx还原效果,例如在长时间的发动机停止后的起动时,并且被引导到排气排放控制装置,其中选择还原催化剂5 即使在存在氧的情况下也能够将NOx选择性地与氨反应,并入排气管4中,作为还原剂的尿素水6被添加到还原催化剂5上游的管4中,通过还原来还原NOx。 其具有在尿素水6的添加位置上游配置在管道4中的氧化催化剂9,氧化催化剂9具有在低于还原剂的下限活性极限温度的温度下物理吸附废气中的NOx的特征 催化剂5,并且在高于氧化催化剂9的较低活性极限温度的温度下排出吸附的NOx;以及用于将燃料添加到氧化催化剂上游的废气3中的燃料喷射装置(燃料喷射装置14) 通过燃料添加装置的添加,直到还原催化剂5的入口侧的排气温度升高到与氧化催化剂9的较低活性极限温度相当的预设温度。

    Exhaust purification device of compression ignition type internal combustion engine
    8.
    发明授权
    Exhaust purification device of compression ignition type internal combustion engine 有权
    压燃式内燃机排气净化装置

    公开(公告)号:US07703275B2

    公开(公告)日:2010-04-27

    申请号:US10542595

    申请日:2004-11-29

    IPC分类号: F01N3/00

    摘要: A fuel adding valve (14), an HC adsorbing and oxidation catalyst (11), and a NOx storing catalyst (12) are successively arranged in an exhaust passage of an internal combustion engine toward the downstream side. When the NOx storing catalyst (12) should release NOx, particulate fuel is added from the fuel adding valve (14). This fuel is adsorbed once at the HC adsorbing and oxidation catalyst (11), then gradually evaporates to make the air-fuel ratio of the exhaust gas flowing into the NOx storing catalyst (12) rich. Due to this, NOx is released from the NOx storing catalyst (12).

    摘要翻译: 燃料添加阀(14),HC吸附和氧化催化剂(11)和NOx储存催化剂(12)在内燃机的排气通道中朝向下游侧依次排列。 当NOx吸留催化剂(12)释放NOx时,从燃料添加阀(14)中加入微粒燃料。 该燃料在HC吸附和氧化催化剂(11)处吸附一次,然后逐渐蒸发,使得流入NOx吸留催化剂(12)的废气的空燃比变浓。 由此,从NOx吸留催化剂(12)释放NOx。

    Fuel injection system and method
    10.
    发明授权
    Fuel injection system and method 失效
    燃油喷射系统及方法

    公开(公告)号:US06959693B2

    公开(公告)日:2005-11-01

    申请号:US10989273

    申请日:2004-11-17

    申请人: Tomihisa Oda

    发明人: Tomihisa Oda

    摘要: A fuel injection system includes a first fuel injector that injects a lower-octane fuel into a combustion chamber of an internal combustion engine, and a second fuel injector that injects a higher-octane fuel into an intake passage of the engine. When the engine temperature is equal to or lower than a predetermined temperature during a start-up period of the internal combustion engine, fuel having the lower octane is injected via the first injector while prohibiting injection of the higher octane fuel via the second fuel injector.

    摘要翻译: 燃料喷射系统包括将低辛烷值燃料喷射到内燃机的燃烧室中的第一燃料喷射器和将高辛烷值燃料喷射到发动机的进气通道中的第二燃料喷射器。 当发动机温度在内燃机启动期间等于或低于预定温度时,通过第一喷射器喷射具有低辛烷值的燃料,同时禁止通过第二燃料喷射器喷射高辛烷值燃料。