Catalyst activating system in multi-cylinder internal combustion engine
    15.
    发明授权
    Catalyst activating system in multi-cylinder internal combustion engine 失效
    多气缸内燃机催化剂活化系统

    公开(公告)号:US5531203A

    公开(公告)日:1996-07-02

    申请号:US377736

    申请日:1995-01-25

    摘要: In a multi-cylinder internal combustion engine including a plurality of fuel injection valves corresponding to a plurality of cylinders, respectively, and a catalytic converter provided in an exhaust system common to the cylinders, the concentration of oxygen in the exhaust gas from the engine is precisely controlled in accordance with the operational condition of the engine in a low-temperature state of the engine for the prompt activation of the catalyst. When the engine is at a low temperature, the operation of the fuel injection valves is controlled so as to stop the supplying of a fuel into the particular cylinders and, the operation of a valve operating characteristic changing means is controlled to adjust the amounts of air drawn and discharged on the basis of conditions detected by operational condition detecting means and at such low temperature to thereby control the oxygen supplied to the catalyst in the catalytic converter whereby the activity of the catalyst can be controlled.

    摘要翻译: 在包括分别对应于多个气缸的多个燃料喷射阀的多气缸内燃机和设置在与气缸共用的排气系统中的催化转化器中,来自发动机的废气中的氧浓度为 在发动机的低温状态下,根据发动机的运转状况进行精确控制,以迅速激活催化剂。 当发动机处于低温时,控制燃料喷射阀的操作,以便停止向特定气缸中供应燃料,并且控制阀操作特性改变装置的操作以调节空气量 基于由操作条件检测装置检测的条件并在这样低的温度下拉出和排出,从而控制供给催化转化器中的催化剂的氧气,从而可以控制催化剂的活性。