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    • 79. 发明授权
    • Stroke judging device for a 4-cycle engine
    • 4冲程发动机的行程判断装置
    • US06378358B1
    • 2002-04-30
    • US09578682
    • 2000-05-26
    • Yoshiaki HirakataMasaya AdachiAkihiko Hamazaki
    • Yoshiaki HirakataMasaya AdachiAkihiko Hamazaki
    • G01M1500
    • F02D41/009F02D37/02F02D2200/0406F02D2200/703F02P5/1506Y02T10/46
    • A stroke judgment device includes a gear having a portion with no teeth, a pulse generator, an intake pipe internal pressure detecting device and an ECU. The ECU controls an injector(s) and the ignition timing of a spark plug(s). The ECU mainly includes a phase detecting device for detecting the phase of the crankshaft, a first stroke judging device for judging stroke based on detected phase and intake pipe internal pressure, a rotational cycle detection device for detecting rotational cycle of the crankshaft, a comparison device for comparing two rotation cycles of specified phase, a second stroke judging device for judging stroke based on results of comparison, and selection device for selecting one of the first stroke judging device or the second stroke judging device.
    • 行程判断装置包括具有无齿部分的齿轮,脉冲发生器,进气管内压检测装置和ECU。 ECU控制喷油器和火花塞的点火正时。 ECU主要包括用于检测曲轴相位的相位检测装置,用于基于检测相位和进气管内压来判定行程的第一冲程判定装置,用于检测曲轴的旋转周期的旋转周期检测装置,比较装置 用于比较指定相位的两个旋转周期,用于基于比较结果来判断笔划的第二笔划判断装置,以及用于选择第一笔划判断装置或第二笔划判断装置中的一个的选择装置。