Lubrication device of turbocharger of engine for vehicle

A lubrication device of a turbocharger of an engine for a vehicle, in which a first turbocharger and a second turbocharger are provided at a one-side wall of the engine, the second turbocharger being located above the level of the first turbocharger, wherein:

• the first turbocharger comprises a shaft bearing portion to which lubricating oil is supplied from the engine and a metal-made return passage through which the lubricating oil from the shaft bearing portion is returned to an return portion of the engine;
• the second turbocharger comprises a shaft bearing portion to which lubricating oil is supplied from the engine and a metal-made return passage through which the lubricating oil from the shaft bearing portion is returned to the return portion of the engine;
• and
• a bellows-shaped vibration absorption portion is provided at the metal-made return passage of the second turbocharger;
• wherein the metal-made return passage of the first turbocharger joins the return passage of the second turbocharger at a junction;
• wherein the length of the metal-made return passage of the second turbocharger from the shaft bearing portion to said junction is longer than that of the metal-made return passage of the first turbocharger from the shaft bearing portion to said junction;
• and
• wherein the metal-made return passage of the first turbocharger comprises an upstream metal-made return passage and a downstream metal-made return passage, and the upstream and downstream metal-made return passages are connected to each other via a flexible hose.