PROBLEM TO BE SOLVED: To provide a saddle riding type vehicle intake structure capable of reducing an intake resistance by forming an intake passage into a less curved shape while providing a frame passing through a vehicle center, preventing the adhesion of a fuel sprayed from a fuel injection valve onto the inner wall surface of the intake passage, improving the performance of an internal combustion engine, and improving output and fuel economy of the internal combustion engine even with the intake structure with the fuel injection valve.SOLUTION: An intake port 41 of a cylinder head 13 of an intake structure of a saddle riding type vehicle is inclined so that an inlet 41d of the intake port 41 is directed toward an outlet 57a of a connecting tube 57 in a view in a direction of a cylinder axis L and formed into a gradual curved shape for a sprayed fuel sprayed from a fuel injection valve 54 of an inlet pipe 50 is directed from the inlet 41d of the intake port 41 to an outlet 22 of the intake port 41, a throttle body 55 and the inlet pipe 50 are disposed on a vehicle body front side with respect to a frame member in rear of an internal combustion engine, and the connecting tube 57 is curved to bypass the frame member in rear of the internal combustion engine and connected to the throttle body 55.

    【課題】車両中心を通るフレームを設けながら、吸気通路を湾曲の少ない形状にして吸気抵抗を低減させるとともに、燃料噴射弁を備えた吸気構造としても、燃料噴射弁からの噴霧燃料の吸気通路内壁面への付着を防ぎ、内燃機関の性能を向上させて出力および燃費を向上させる鞍乗り型車両の吸気構造を提供する。【解決手段】鞍乗り型車両の吸気構造のシリンダヘッド13の吸気ポート41を、シリンダ軸線L方向視において吸気ポート41の入口41dがコネクティングチューブ57の出口57aに向かうように傾斜させ、インレットパイプ50の燃料噴射弁54から噴霧される噴霧燃料が吸気ポート41の入口41dから吸気ポート41の出口22に向かうように緩やかな湾曲形状に形成し、スロットルボディ55とインレットパイプ50を、内燃機関後方のフレーム部材より車体前側に配置し、コネクティングチューブ57は内燃機関後方のフレーム部材を迂回するように湾曲してスロットルボディと接続する。【選択図】図3


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    Titel :

    SADDLE RIDING TYPE VEHICLE INTAKE STRUCTURE


    Weitere Titelangaben:

    鞍乗り型車両の吸気構造


    Beteiligte:
    NOMURA TAKASHI (Autor:in) / HOTTA KAZUHITO (Autor:in)

    Erscheinungsdatum :

    02.11.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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