SUPERCHARGER LUBRICATING STRUCTURE FOR INTERNAL COMBUSTION ENGINE

• Main Authors: MUROI, SHUNSUKE, NAKAYASU, TETSUYA
• Format: Patent
• Language: English; French
• Published: 28.05.2013
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; LUBRICATING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

A supercharger lubricating structure for an internal combustion engine is provided that can supply oil to a supercharger through a short oil passage without use of external piping and downsize a lubricating oil pump. A supercharger lubricating structure for an internal combustion engine is characterized by the following: A rotating shaft is connected to a crankshaft via a joint. A connection pipe is insertably passed through the crankshaft and the rotating shaft to allow an intra-crankshaft oil-feed passage and an intra-rotating-shaft oil-feed passage to communicate with each other. An eccentric shaft portion is provided on the rotating shaft. A supercharger composed of an orbiting movable scroll and front and rear fixed scrolls is provided on the eccentric shaft portion via needle bearings. The front and rear fixed scrolls are provided with ball bearings and the needle bearing supporting the rotating shaft. Oil passages are formed to allow the intra-rotating-shaft oil-feed passage, the ball bearing, the needle bearing and the needle bearings to communicate with one another.