| 摘要 |
PURPOSE:To prevent increase of a bearing loss at start or other time in an exhaust gas turbo-supercharger for automobiles by heating a lubricating oil by means of an exhaust gas fed into a heating chamber when a temperature of the oil is low and otherwise, bypassing the heating chamber when the temperature is high. CONSTITUTION:For lubricating each bearing of an exhaust gas turbo-supercharger, lubricating oil is supplied into a suction hole 9. When a temperature of the lubricating oil is low, because a valve 10 is closed, the lubricating oil is fed through a passage 9a into a heating chamber 12, heated by an exhaust gas therein and supplied for bearings 3a, 3b, 4 from a passage 15a. On the other hand, when a temperature of the lubricating oil is high enough, the valve 10 is opened and the lubricating oil is thereby directly supplied for the bearings 3a, 3b, 4 without passing through the heating chamber 12. As a relief pore 19 is opened at an intermediate point in the heating chamber, an oil leaking from the pore properly cools a bearing casing 2 and the oil in the heating chamber 12 is prevented from superheating for carbonization. |
