Pressurized lubrication assembly for the center bearing of a turbocharger

US4513705A · kind A · utility

Inventor

• John W. Evans · Sharon, US

Key dates

• Filing date: Dec 2, 1983
• Grant date: Apr 30, 1985
• Expiry date: Dec 2, 2003

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2005/028
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A lubrication assembly for supplying pressurized lubricant to the center bearing of an exhaust-driven turbocharger associated with an internal combustion engine during turbocharger spin down after the engine has been shut down comprises a reservoir means for storing a quantity of lubricant under pressure. The reservoir means is coupled in fluid communication with the lubricant line which supplies lubricant to the center bearing when the engine is running. A valve means controls flow of lubricant between the center bearing lubricant line and the reservoir means. This valve means permits the reservoir means to capture and store lubricant at peak engine lubricant pressure. The valve means releases lubricant from the reservoir means to the center bearing in order to provide lubricant to the center bearing during the turbocharger spin down period after engine shut down when the engine lubricant pump is likewise shut down. The preferred valve means is a diaphragm type bi-directional valve which is solenoid actuated.