| 摘要 |
The invention relates to a crankcase (1) for an air-cooled combustion engine for a handheld working machine, for example a brushcutter or a trimmer, comprising a crankcase chamber (20), a flywheel side (2) with a fan scroll (4) and a fan wheel (3) arranged in the fan scroll, a clutch side (11) opposite the flywheel side and a number of crankcase walls between the fan wheel side and the clutch side. Through a crankcase wall on at least one side between the fan wheel side and the clutch side, one or more cooling ducts (32) extend between one or more inlet openings (35) for cooling air in the fan scroll and one or more outlet openings (50) for the cooling air, exiting into the clutch housing (12), for cooling of the wall on said at least one side between the fan wheel side and the clutch side. |
