Crankcase of an engine
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsKatsuhiko Ohno, Keisuke Ishii, Motoaki Etoh
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Abstract
An engine of forced air cooled type which is provided with a cooling fan fixedly mounted on an end of a crankshaft within a blower housing of the fan, and which has a plurality of meshed gears. The crankcase constitutes the lower part of the outer structure of the engine to enclose the gears and has a double-wall construction with cooling air passages thus formed therein in at least the part thereof enclosing the gears. The cooling air passages have upstream ends communicating with the delivery outlet of the blower housing and downstream ends positioned to direct cooling air against and along the outer surface of the crankcase.
Claims7
A crankcase of an engine of forced air cooled type which is provided with a cooling fan fixedly mounted on an end of a crankshaft within a blower housing of said fan, and which has a plurality of meshed gears, said crankcase constituting the lower part of an outer structure of the engine to enclose said gears and having a double-wall construction with cooling air passages thus formed therein in at least the part thereof enclosing said gears, said cooling air passages having upstream ends communicating with an outlet of said blower housing and downstream ends positioned to direct cooling air against and along the outer surface of the crankcase.
Dependencies are inferred from the claim text.