PROBLEM TO BE SOLVED: To provide an internal combustion engine of a saddle-riding type vehicle, which can improve the assemblability and productivity.SOLUTION: An internal combustion engine 31 of a motorcycle 10 has a rear cylinder head 97 in which there are provided a cam shaft 104, an exhaust rocker arm 107 swung by the cam shaft 104, an engine valve pressed by the exhaust rocker arm 107 to open and close, and a rocker arm shaft 108 swingably supporting the exhaust rocker arm 107. In the internal combustion engine, a holder member 98 is provided in a separate body from the rear cylinder head 97 and adjacently to the rear cylinder head 97, and the cam shaft 104 is rotatably supported on the holder member 98. The holder member 98 is provided with right and left rear side walls 152U supporting the rocker arm shaft 108 and an internal combustion engine support part 152a supported on a vehicle frame.SELECTED DRAWING: Figure 4
【課題】組付性及び生産性を向上させることが可能な鞍乗り型車両の内燃機関を提供する。【解決手段】後シリンダヘッド97に、カム軸104と、カム軸104により揺動される排気ロッカーアーム107と、排気ロッカーアーム107により押圧されて開閉される機関弁と、排気ロッカーアーム107を揺動自在に支持するロッカーアームシャフト108とが設けられた自動二輪車10の内燃機関31において、後シリンダヘッド97とは別体に且つ後シリンダヘッド97に隣接するようにホルダ部材98が設けられ、カム軸104は、ホルダ部材98に回転自在に支持され、ホルダ部材98は、ロッカーアームシャフト108を支持する左右の後部側壁152uと、車体フレームに支持される内燃機関支持部152aとが設けられる。【選択図】図4
INTERNAL COMBUSTION ENGINE OF SADDLE-RIDING TYPE VEHICLE
鞍乗り型車両の内燃機関
2017-10-05
Patent
Electronic Resource
Japanese
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