| 摘要 |
<P>PROBLEM TO BE SOLVED: To appropriately supply lubricating oil to a two stage turbocharger system with a simple structure. <P>SOLUTION: A lubricating device for a turbocharger is applied to the two stage turbocharger system. An lubrication oil passage includes a first branch passage supplying lubricating oil to a first turbocharger, and a second branch passage supplying lubricating oil to a second turbocharger. A lubricating oil quantity adjusting valve is disposed at a branched section of the lubricating oil passage and adjusts quantity of oil supplied to the first branched passage and quantity of oil supplied to the second branched passage. More concretely, the lubricating oil quantity adjusting valve operates, using suction pressure on a downstream side of a compressor of the first turbocharger and suction pressure on a downstream side of a compressor of the second turbocharger. Consequently, oil pressure to a turbocharger which requires pressure of lubricating oil can be appropriately secured by a simple structure. <P>COPYRIGHT: (C)2010,JPO&INPIT |
