PROBLEM TO BE SOLVED: To provide a higher efficient internal combustion engine for a saddle-riding type vehicle.SOLUTION: An internal combustion engine comprises a piston reciprocating in a cylinder, a valve train operating an intake valve for opening and closing an intake port and an exhaust valve for opening and closing an exhaust port, a supercharger compressing intake air, a throttle valve regulating an intake air amount, and an injector injecting fuel. The intake port and the exhaust port are formed at an upper side in a cylinder axial direction than a top dead center of the piston, and the throttle valve is arranged at a downstream side in an intake air flow direction of the supercharger. During the piston makes one reciprocation from the top dead center to a next top dead center, the valve train operates the intake valve and the exhaust valve such that there is a valve overlap period in which both the exhaust valve and the intake valve are opened, the injector injects fuel into the cylinder after closing of the exhaust valve, and an air-fuel mixture is combusted.SELECTED DRAWING: Figure 4

    【課題】 より高効率の鞍乗型乗物用の内燃機関を提供する。【解決手段】 内燃機関が、シリンダ内で往復するピストンと、吸気口を開閉する吸気弁および排気口を開閉する排気弁を動作させる動弁機構と、吸気を圧縮する過給機と、吸気量を調整するスロットル弁と、燃料を噴射するインジェクタと、を備える。吸気口および排気口が、ピストンの上死点よりもシリンダ軸方向上側に形成され、スロットル弁が、過給機よりも吸気流れ方向下流側に配置される。ピストンが、上死点から次の上死点まで1往復する間に、排気弁も吸気弁も開弁している期間であるバルブオーバーラップ期間が存在するように動弁機構が吸気弁および排気弁を動作させ、インジェクタが排気弁の閉弁後に燃料をシリンダに噴射し、かつ、混合気が燃焼される。【選択図】図4


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    Title :

    INTERNAL COMBUSTION ENGINE FOR SADDLE-RIDING TYPE VEHICLE


    Additional title:

    鞍乗型乗物用の内燃機関


    Contributors:

    Publication date :

    2018-11-29


    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 / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



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