Exhaust temperature raising apparatus and method for internal combustion engine
    27.
    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。