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    CONTROL UNIT FOR MULTI-CYLINDERED INTERNAL COMBUSTION ENGINE
    1.
    发明申请
    CONTROL UNIT FOR MULTI-CYLINDERED INTERNAL COMBUSTION ENGINE 审中-公开
    多缸内燃机控制单元

    公开(公告)号：US20110277451A1

    公开(公告)日：2011-11-17

    申请号：US13088805

    申请日：2011-04-18

    申请人： Shinichi HOSHINO ,  Isao NAKAJIMA ,  Tatsuro SHIMADA ,  Sei MARUTA

    发明人： Shinichi HOSHINO ,  Isao NAKAJIMA ,  Tatsuro SHIMADA ,  Sei MARUTA

    IPC分类号： F02D43/00

    CPC分类号： F02D41/0002 ,  F02D37/02 ,  F02D41/0052 ,  F02D41/0255 ,  F02D2013/0292 ,  F02P5/1514 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/46 ,  Y02T10/47

    摘要： The “imbalance index value” representing the magnitude of the difference among the cylinder-by-cylinder air-fuel ratios (imbalance of air-fuel ratios among cylinders) is acquired based on the output value of the air-fuel ratio sensor disposed above the catalyst. The execution of the emission reduction control is “limited” when the magnitude of the imbalance of air-fuel ratios among cylinders represented by the imbalance index value is the first degree or more, and less than the second degree which is larger than the first degree, and is “prohibited” when it is the second degree or more. As the emission reduction control, a purge control, an EGR control, an Al incremental control, a cold VVT control, a catalyst warm-up delay angle control, an SCV control, and the like can be exemplified. Misfire due to the execution of emission reduction control are suppressed, when the imbalance of air-fuel ratios among cylinders occurs.

    摘要翻译： 基于设在上述空燃比传感器的空燃比传感器的输出值，求出表示气缸/气缸空燃比（气缸间空燃比的不平衡）之差的大小的“不平衡指数值” 催化剂。 当由不平衡指数值表示的气缸中的空燃比的不平衡的大小为一度以上且小于比第一度大的第二度时，排气减少控制的执行被限制 并且在第二学位以上被“禁止”。 作为排放减少控制，可以例示清洗控制，EGR控制，Al增量控制，冷VVT控制，催化剂预热延迟角控制，SCV控制等。 当汽缸之间的空燃比的不平衡发生时，由于执行减排控制而导致的失火被抑制。

    APPARATUS FOR DETECTING IMBALANCE ABNORMALITY IN AIR-FUEL RATIO BETWEEN CYLINDERS IN MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    APPARATUS FOR DETECTING IMBALANCE ABNORMALITY IN AIR-FUEL RATIO BETWEEN CYLINDERS IN MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
    用于检测多缸内燃机中气缸之间的空燃比不平衡异常的装置

    公开(公告)号：US20140288802A1

    公开(公告)日：2014-09-25

    申请号：US14186043

    申请日：2014-02-21

    申请人： Akihiro Katayama ,  Kazuhiro Akisada ,  Leuth Insixiengmai ,  Sei Maruta ,  Shinichi Nakagoshi ,  Masahide Okada

    发明人： Akihiro Katayama ,  Kazuhiro Akisada ,  Leuth Insixiengmai ,  Sei Maruta ,  Shinichi Nakagoshi ,  Masahide Okada

    IPC分类号： F02D41/24

    CPC分类号： F02D41/0085 ,  F02D41/0082 ,  F02D41/0097 ,  F02D41/1456 ,  F02D2200/101

    摘要： An apparatus for detecting imbalance abnormality in an air-fuel ratio between cylinders in a multi-cylinder internal combustion engine is disclosed. The apparatus includes an imbalance determining unit programmed to determine imbalance in an air-fuel ratio of a first cylinder belonging to a cylinder group based upon a difference value between an index value correlative with a crank angular speed detected in the first cylinder and an index value correlative with a crank angular speed detected in a second cylinder belonging to another cylinder group, and further a correction unit programmed to correct the difference value for the first cylinder based upon the index value detected in at least one of other cylinders belonging to the same cylinder group as that of the first cylinder.

    摘要翻译： 公开了一种用于检测多缸内燃机中的气缸之间的空燃比的不平衡异常的装置。 该装置包括不平衡确定单元，其被编程为基于与在第一气缸中检测到的曲柄角速度相关的指标值与指标值之间的差值来确定属于气缸组的第一气缸的空燃比的不平衡 与在属于另一气缸组的第二气缸中检测到的曲柄角速度相关联，并且还包括校正单元，其被编程为基于在属于相同气缸的其它气缸中的至少一个气缸中检测到的指标值来校正第一气缸的差值 组为第一气缸。