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    Exhaust temperature raising apparatus and method for internal combustion engine
    3.
    发明授权
    Exhaust temperature raising apparatus and method for internal combustion engine 失效
    内燃机排气升温装置及方法

    公开(公告)号：US06381952B1

    公开(公告)日：2002-05-07

    申请号：US09696024

    申请日：2000-10-26

    申请人： Takamitsu Asanuma ,  Shinya Hirota ,  Shunsuke Toshioka ,  Nobumoto Ohashi

    发明人： Takamitsu Asanuma ,  Shinya Hirota ,  Shunsuke Toshioka ,  Nobumoto Ohashi

    IPC分类号： F01N300

    CPC分类号： F02D41/405 ,  F02D9/04 ,  F02D41/024 ,  F02D41/221 ,  Y02T10/26 ,  Y02T10/44

    摘要： An exhaust temperature raising apparatus has an exhaust throttle valve that adjusts the engine exhaust amount based on the amount of throttling, and an injector that performs main injection and a sub-injection directly into a cylinder, a combination of an ECU, the injection and the exhaust throttle valve as exhaust gas temperature increase apparatus for, during an engine warm-up, performing and controlling the exhaust throttling by the exhaust valve and performing and controlling an exhaust gas temperature increase through combustion attributed to the main injection performed in an excess-air condition and combustion attributed to the sub-injection, an exhaust gas temperature sensor that monitors a state of temperature increase of the exhaust gas caused by performance of the exhaust gas temperature increase apparatus, and the ECU as monitor abnormality detection apparatus for determining whether the exhaust gas temperature sensor has an abnormality, and the ECU as exhaust gas temperature increase stop apparatus for stopping the operation of the exhaust gas temperature increase apparatus when the ECU determines that the exhaust gas temperature sensor has an abnormality.

    摘要翻译： 排气温度提升装置具有排气节流阀，该排气节流阀基于节流量调节发动机排气量，以及直接进入气缸的主喷射和次喷射的喷射器，ECU的组合，喷射和 排气节流阀作为排气温度升高装置，用于在发动机预热期间，通过排气阀执行和控制排气节流，并且通过在过量空气中执行的主喷射进行燃烧执行和控制排气温度升高 归因于副喷射的状况和燃烧，排气温度传感器，其监测由排气温度升高装置的性能引起的废气的升温状态，ECU作为监视异常检测装置，用于确定排气 气体温度传感器有异常，而ECU作为废气温度调节 当ECU判断为排气温度传感器异常时，重新设定停止排气升温装置的运转的停止装置。

    Exhaust gas purification system for an internal combustion engine
    4.
    发明申请
    Exhaust gas purification system for an internal combustion engine 审中-公开
    内燃机废气净化系统

    公开(公告)号：US20090158716A1

    公开(公告)日：2009-06-25

    申请号：US12227350

    申请日：2007-05-24

    申请人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shinya Hirota ,  Takamitsu Asanuma

    发明人： Yoshihisa Tsukamoto ,  Nobumoto Ohashi ,  Shinya Hirota ,  Takamitsu Asanuma

    IPC分类号： F01N3/20

    CPC分类号： F01N11/002 ,  F01N3/0814 ,  F01N3/0842 ,  F01N2550/02 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/405 ,  F02D2200/0802 ,  Y02T10/26 ,  Y02T10/47

    摘要： The present invention is to provide a technique which can detect the level of degradation of a precatalyst in an exhaust gas purification system for an internal combustion engine that includes a NOx catalyst arranged on an exhaust passage of the internal combustion engine, and the precatalyst arranged on the exhaust passage at a location upstream of the NOx catalyst and having an oxidation function. In the present invention, the level of degradation of the precatalyst is detected based on the width of change in temperature of the NOx catalyst at the time when a reducing agent is intermittently supplied from an upstream side of the precatalyst to the precatalyst and the NOx catalyst. At this time, it is determined that the larger the width of change in temperature of the NOx catalyst, the higher the level of degradation of the oxidation catalyst is.

    摘要翻译： 本发明提供一种能够检测内燃机的排气净化系统中的预催化剂的劣化水平的技术，所述内燃机的排气净化系统包括配置在内燃机的排气通路上的NOx催化剂， 在NOx催化剂上游的位置具有氧化功能的排气通道。 在本发明中，根据从催化剂前体向预催化剂间歇地供给还原剂和NOx催化剂时的NOx催化剂的温度变化的宽度来检测预催化剂的劣化程度， 。 此时，确定NOx催化剂的温度变化幅度越大氧化催化剂的降解程度越高。