PROBLEM TO BE SOLVED: To provide an intake device of an internal combustion engine for a small-sized vehicle in which fuel supply means for mixing fuel with intake air is interposed in the middle of an intake passage with a downstream end communicating with an intake port of an engine body and an upstream end communicating with a clean chamber of an air cleaner, so as to prevent the fuel from stagnating in the air cleaner to dispense with maintenance work for discharging the fuel from the air cleaner.SOLUTION: Mounted on a vehicle, an air cleaner 31 is arranged spaced apart in the longitudinal direction from fuel supply means 30. A bottom wall 55 of a clean chamber 44 is formed in an air cleaner case 40 of the air cleaner 31 and is arranged inclined so as to be at a gradually lower position as it advances toward one side in the vehicle width direction. At the lowest portion of the bottom wall 55, a connection port 57 is provided for communication with an upstream end of an intake passage which is at a gradually higher position as it advances toward the air cleaner 31 side from an intake port.SELECTED DRAWING: Figure 3
【課題】機関本体の吸気ポートに下流端が連通されるとともに上流端がエアクリーナのクリーン室に連通される吸気通路の途中に、吸入空気に燃料を混合させる燃料供給手段が介設される小型車両用内燃機関の吸気装置において、エアクリーナ内に燃料が溜まることを防止し、エアクリーナから燃料を排出するためのメンテナンス作業を不要とする。【解決手段】車両搭載状態で燃料供給手段30から前後方向に離隔した位置にエアクリーナ31が配置され、このエアクリーナ31のクリーナケース40内に形成されるクリーン室44の底壁55が、車幅方向一方に向かうにつれて次第に下方位置となるように傾斜して配置され、底壁55の最低部に、吸気ポートからエアクリーナ31側に向かうにつれて次第に上方位置となる吸気通路の上流端を通じさせる接続口57が設けられる。【選択図】 図3
INTAKE DEVICE OF INTERNAL COMBUSTION ENGINE FOR SMALL-SIZED VEHICLE
小型車両用内燃機関の吸気装置
2016-04-11
Patent
Electronic Resource
Japanese
IPC: | B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS |
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