| 摘要 |
In a turbocharger, an oil thrower (36) is disposed between a bearing portion (31) for supporting a turbine shaft (5) in a bearing housing (3) and an impeller (6) located in front of the bearing portion (31). A seal plate (44) which faces the outer periphery of a front part of the oil thrower (36) to prevent oil leakage from the bearing portion (31) toward the impeller (6) is formed as an integral part of the bearing housing (3) in such a manner that it may be located on the back face of the impeller (6). Moreover, an oil thrower facing portion (39) is formed in the bearing housing (3) to construct an oil reserve (40) face to face with the outer periphery of a rear part of the oil thrower (36). The seal plate (44) consists of a press-fit plate (47), and the diameter of the press-fit plate (47) is set smaller than the outer diameter of the impeller (6) and the same as or larger than a minimum bore diameter for processing the outer periphery (42) of the oil thrower facing portion (39) or for processing an oil exhaust hole (41) in the oil thrower facing portion (39). |
