To provide a straddle-type vehicle in which a power unit provided with an internal combustion engine and an air-cooling belt-type continuously variable transmission is arranged between a front wheel and a rear wheel and mounted on a vehicle body frame and which enables downsizing of the power unit by allowing the belt-type continuously variable transmission to be effectively cooled with the use of travel wind and increases maintainability of the belt-type continuously variable transmission.SOLUTION: A drive pulley 57 is provided at a front end portion of a crank shaft 27 extending in a vehicle front-to-back direction. A pulley shaft 60 on which a driven pulley 58 is provided includes an axis in parallel with the crank shaft 27, and the pulley shaft 60 is arranged at one side in a vehicle width direction of the crank shaft 27. A transmission case 21 in which a belt-type continuously variable transmission 48 is housed is continuously provided at an engine body 20 of an internal combustion engine E. A travel wind intake opening communicating with the transmission case 21 is opened to the front in the vehicle front-to-back direction to allow travel wind to be taken from the front in the vehicle front-to-back direction into the opening.SELECTED DRAWING: Figure 3

    【課題】内燃機関と、空冷式のベルト式無段変速機とを備えるパワーユニットが、前輪および後輪間に配置されつつ車体フレームに搭載される鞍乗り型車両において、走行風を用いてベルト式無段変速機を有効に冷却するようにしてパワーユニットの小型化を可能としつつ、ベルト式無段変速機のメンテナンス性を高める。【解決手段】車両前後方向に沿うクランクシャフト27の前端部に駆動プーリ57が設けられ、従動プーリ58が設けられるプーリシャフト60が、クランクシャフト27と平行な軸線を有しつつクランクシャフト27の車幅方向一側に配置され、ベルト式無段変速機48を収容する伝動ケース21が内燃機関Eの機関本体20に連設され、伝動ケース21内に通じる走行風取り入れ用開口部が、車両前後方向前方からの走行風を取り入れることを可能として車両前後方向前方に臨んで開口される。【選択図】 図3


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    Titel :

    STRADDLE-TYPE VEHICLE


    Weitere Titelangaben:

    鞍乗り型車両


    Beteiligte:

    Erscheinungsdatum :

    2018-11-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / F16H Getriebe , GEARING



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