To provide a swing unit type power unit that achieves a layout of a detection sensor, which is less susceptible to a reciprocating motion of a piston in detecting a crank angle.SOLUTION: A swing type power unit includes: a centrifugal fan 86 that is fixed to one end of a crankshaft and rotates about a rotation axis Rx of the crankshaft; a crankcase 28 that houses the centrifugal fan 86 and has an opening 116 that lets an airflow of the centrifugal fan 86 flow out in parallel with the rotation axis Rx; an object to be detected that is fixed to the crankshaft and rotates integrally with the crankshaft; and a detection sensor 113 that is disposed biased to a front end or a rear end of the opening 116 in a peripheral direction about the rotation axis Rx in a side view, is caused to face the track of the object to be detected, and generates a pulse signal according to a motion of the object to be detected.SELECTED DRAWING: Figure 8

    【課題】クランク角の検出にあたってピストンの往復運動の影響を受けにくい検知センサーのレイアウトを実現するスイングユニット式のパワーユニットを提供する。【解決手段】スイング式のパワーユニットは、クランクシャフトの一端に固定されてクランクシャフトの回転軸線Rx回りで回転する遠心ファン86と、遠心ファン86を収容し、回転軸線Rxに並行に遠心ファン86の気流を流出させる開口116を有するクランクケース28と、クランクシャフトに固定されて、クランクシャフトと一体に回転する被検知体と、側面視で、回転軸線Rx回りで周方向に開口116の前端または後端に偏って配置され、被検知体の軌道に向き合わせられて被検知体の動きに応じてパルス信号を生成する検知センサー113とを備える。【選択図】図8


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    Title :

    SWING UNIT TYPE POWER UNIT


    Additional title:

    スイングユニット式のパワーユニット


    Contributors:

    Publication date :

    2019-10-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / B62K Fahrräder , CYCLES / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung



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