To provide an engine cooling structure capable of enhancing cooling performance of a cylinder head.SOLUTION: A front fender 28 is disposed at a front side of an air-cooled engine E which is a driving source of a motorcycle. An air introduction hole 42 opened forward is formed in a front portion of a cylinder head 20 of the air-cooled engine E. The air introduction hole 42 communicates with a space SP1 around a plug attachment part 40 of an ignition plug 38 with a space SP2 ahead of the cylinder head 20. A guide 56 for guiding travelling air A toward the air introduction hole 42 is formed at a rear portion 28r of the front fender 28.SELECTED DRAWING: Figure 1

    【課題】シリンダヘッドの冷却効果を高めることができるエンジン冷却構造を提供する。【解決手段】自動二輪車の駆動源である空冷エンジンEの前方に、フロントフェンダ28が配置されている。空冷エンジンEのシリンダヘッド20の前部に、前方に開口する導風孔42が形成されている。導風孔42は、点火プラグ38のプラグ取付部40の周囲の空間SP1と、シリンダヘッド20の前方の空間SP2とを連通する。フロントフェンダ28の後部28rに、導風孔42に向けて走行風Aを案内するガイド部56が形成されている。【選択図】図1


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    Title :

    ENGINE COOLING STRUCTURE OF MOTORCYCLE


    Additional title:

    自動二輪車のエンジン冷却構造


    Contributors:

    Publication date :

    2020-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen



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