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    COMBUSTION STATUS DETECTION DEVICE FOR INTERNAL COMBUSTION ENGINE
    4.
    发明公开
    COMBUSTION STATUS DETECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开
    VORRICHTUNG ZUR ERKENNUNG DES VERBRENNUNGSZUSTANDS IN EINEM VERBRENNUNGSMOTOR

    公开(公告)号：EP3093472A4

    公开(公告)日：2017-01-18

    申请号：EP14877911

    申请日：2014-12-25

    申请人： TOYOTA MOTOR CO LTD

    发明人： SAKAYANAGI YOSHIHIRO ,  SUZUKI YUSUKE

    IPC分类号： F02D45/00 ,  F02B77/08 ,  F02D35/02 ,  F02D41/00 ,  G01M15/08

    CPC分类号： F02B77/085 ,  F02B77/087 ,  F02D35/023 ,  F02D35/028 ,  F02D41/009 ,  F02D2200/0406 ,  G01M15/08

    摘要： A reciprocating internal combustion engine (10) includes an in-cylinder pressure sensor (34) and a crank angle sensor (42). Data of calculated heat release amount Q in synchronization with crank angle is calculated using in-cylinder pressure P after absolute pressure correction. An amount of heat release amount variation ”Q is calculated as a difference between a first calculated heat release amount Q 1 at a first crank angle ¸ 1 on an advanced side of TDC and a second calculated heat release amount Q 1 at a second crank angle ¸ 2 symmetrical to ¸ 1 about TDC. An actual heat release amount Qt is estimated based on the amount of heat release amount variation ”Q calculated using, as the first crank angle ¸ 1 , a crank angle on an advanced side of a combustion start point and using, as the second crank angle ¸ 2 , a crank angle on a retarded side of a combustion end point.

    摘要翻译： 往复式内燃机（10）包括缸内压力传感器（34）和曲柄角传感器（42）。 在绝对压力校正后，使用缸内压力P计算计算出的排放量Q与曲柄角同步的数据。 散热量变化量Q被计算为在TDC的前进侧的第一曲柄角度¸1处的第一计算放热量Q 1与第二曲柄角度的第二计算放热量Q 1之差 ¸2对称于¸1关于TDC。 基于使用燃烧起点的前方侧的曲柄角作为第一曲柄角¸1算出的散热量变化量Q的使用量，作为第二曲柄角度，推定实际放热量Qt ¸2，燃烧终点延迟侧的曲柄角。