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    • 7. 发明专利
    • Method and device for detecting crank angle of engine
    • 用于检测发动机起重角度的方法和装置
    • JP2009235963A
    • 2009-10-15
    • JP2008081669
    • 2008-03-26
    • Honda Motor Co Ltd本田技研工業株式会社
    • OMURO YOSHIYAOUCHI KATSUHIRO
    • F02D45/00F02P7/067
    • G01M15/06
    • PROBLEM TO BE SOLVED: To prevent false recognition of compression top dead center as a non-toothed portion when the non-toothed portion of a crank pulse rotor is made to interrupt in an intake valve open period.
      SOLUTION: A crank angle sensor 11 is arranged at a position facing an outer circumference of a crank pulse rotor 10 including a non-toothed portion 10a thereof. An interval calculating unit 13 measures crank pulse time intervals between adjacent teeth based on a sensing signal received from the crank angle sensor 11. The measured successive crank pulse time intervals are compared for detection of the non-toothed portion 10a. The successive plurality of teeth of the crank pulse rotor 10 are positioned in a range ranging before and after the top dead center. A ratio calculating unit 15 calculates a ratio of crank pulse intervals by dividing a last value by a last but one value of the time interval. A maximum ratio detecting unit 16 determines a position where the maximum ratio is calculated as the non-toothed portion 10a out of ratios of calculated crank pulse intervals.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:当在进气门打开期间使曲柄脉冲转子的非齿形部分中断时,防止作为非齿形部分的压缩上止点的错误识别。 解决方案:曲柄角传感器11布置在面向包括其非齿部分10a的曲柄脉冲转子10的外圆周的位置。 间隔计算单元13基于从曲柄角传感器11接收到的感测信号来测量相邻齿之间的曲柄脉冲时间间隔。比较测量的连续曲柄脉冲时间间隔以检测非齿部10a。 曲柄脉冲转子10的连续多个齿定位在上死点前后的范围内。 比率计算单元15通过将最后值除以时间间隔的最后值而是一个值来计算曲柄脉冲间隔的比率。 最大比率检测单元16根据计算出的曲柄脉冲间隔的比率,确定最大比率被计算为非齿部分10a的位置。 版权所有(C)2010,JPO&INPIT
    • 10. 发明专利
    • Cylinder discriminating device of internal combustion engine
    • 内燃机缸体识别装置
    • JP2004044440A
    • 2004-02-12
    • JP2002201331
    • 2002-07-10
    • Mitsubishi Electric Corp三菱電機株式会社
    • MAKINO MICHIKAZUYONEZAWA SHIROKANAZAWA EIJIWATANUKI TAKUO
    • F02D45/00G01M15/06
    • G01M15/06
    • PROBLEM TO BE SOLVED: To provide a cylinder discriminating device of an internal combustion engine capable of accurately and surely detecting a reference position for each cylinder without relying upon the rotating state.
      SOLUTION: This cylinder discriminating device comprises a means for generating crank angle signals according to the rotation of a crankshaft 12, a means for generating cylinder discriminating signals according to the rotation of a camshaft 11, a means for detecting a reference position based on crank angle signals, a means for setting a cylinder discrimination interval based on the reference position, a means for specifying each cylinder based on the cylinder discrimination signals in the cylinder discrimination interval, and a rotating state detection means for detecting a low rotation range and a high rotation range. The reference position detection means comprises a first detection processing means for validating processing specifications corresponding to a low rotation range operation state and a second detection processing means for validating processing specifications corresponding to a high rotation range operating state. The first and second detection processing means are switchingly used according to the operating state.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种内燃机的气缸识别装置,能够精确可靠地检测每个气缸的基准位置,而不依赖于旋转状态。 该气缸识别装置包括根据曲轴12的旋转产生曲柄角信号的装置,用于根据凸轮轴11的旋转产生气缸识别信号的装置,用于检测基准位置的装置 曲柄角信号,基于基准位置设定气缸判别间隔的装置,用于根据气缸辨别区间中的气缸判别信号指定每个气缸的装置和用于检测低旋转范围的旋转状态检测装置,以及 高旋转范围。 参考位置检测装置包括用于验证与低旋转范围操作状态相对应的处理规格的第一检测处理装置和用于验证与高旋转范围操作状态相对应的处理规格的第二检测处理装置。 第一和第二检测处理装置根据操作状态被切换使用。 版权所有(C)2004,JPO