| 摘要 |
PROBLEM TO BE SOLVED: To prevent a bearing part from being seized or abnormally worn by feeding an oil to the bearing part for a predetermined time even after an engine is stopped. SOLUTION: This lubrication device of a turbocharger comprises a variable displacement accumulator 2 having a cylinder with a pressure accumulating chamber 8 capable of accepting a part of the oil discharged from an oil pump and a piston 6 biased into the pressure accumulating chamber 8 by the spring force of a compression spring 7 and reciprocatably disposed in the cylinder 5. The pressure accumulating chamber 8 is accumulated with the discharge port of the oil pump with a check valve interposed therebetween. The accumulating pressure chamber 8 is communicated with the bearing part 16 through an oil feed port 17. While the engine is operating, the check valve is opened by the discharge pressure of the oil pump, the piston 6 is moved to the outside of the pressure accumulating chamber 8, and a part of the oil is fed into the bearing part 16 and stored in the pressure accumulating chamber 8. When the engine is stopped, the check valve is closed, and the oil accumulated in the pressure accumulating chamber 8 is discharged and fed to the bearing part 16 for a predetermined time. COPYRIGHT: (C)2007,JPO&INPIT
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