INTERNAL COMBUSTION ENGINE

In an internal combustion engine, an oil return passage extending from a breather chamber can be formed without increasing the number of component parts and without increasing the size of the internal combustion engine. The internal combustion engine (1) comprises an engine block (30) defining a cyl...

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Bibliographische Detailangaben
1. Verfasser:	KONO, Shohei
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BEARINGS BLASTING COMBUSTION ENGINES CRANKCASE VENTILATING CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ELEMENTS OR CRANKSHAFT MECHANISMS ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS STEAM ENGINES SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	In an internal combustion engine, an oil return passage extending from a breather chamber can be formed without increasing the number of component parts and without increasing the size of the internal combustion engine. The internal combustion engine (1) comprises an engine block (30) defining a cylinder (2); a case member (19) fastened to a lower part of the engine block to define a crank chamber jointly with the engine block; a bearing member (50) fastened to the engine block in the crank chamber to rotatably support a crankshaft; a breather chamber (113) defined in the engine block; an inlet passage (112) formed in the engine block to communicate the crank chamber with the breather chamber; a connection pipe (114) communicating the breather chamber with an intake device; and an oil return passage (150) formed at least in the bearing member, and extending from a bottom part of the breather chamber to an oil return port (147) opening at an outer surface of the bearing member. The oil return port may be provided in a lower part of the bearing member.