Turbocharger

摘要

A turbocharger is disclosed. The turbocharger includes a seal plate facing a front portion outer periphery of an oil thrower arranged between a bearing portion and an impeller in front thereof, integral with a bearing housing. An oil-thrower facing part formed in the bearing housing faces a rear portion outer periphery of the oil thrower to provide an oil sump. The seal plate is in the form of press-fit plate, a diameter of the press-fit plate being smaller than an outer diameter of the impeller and being at least equal to a minimum working bore diameter for machining of an outer periphery or oil discharge openings of the oil-thrower facing part.

主权项

1. A turbocharger comprising:
an oil thrower arranged between a bearing portion for support of a turbine shaft in a bearing housing and an impeller in front thereof; a seal plate integral with the bearing housing and facing a front portion outer periphery of the oil thrower through a seal ring for prevention of oil from leaking from the bearing portion to the impeller; an oil-thrower facing part integral with the bearing housing and facing a rear portion outer periphery of said oil thrower; an oil sump arranged between said oil-thrower facing part and said rear portion outer periphery of said oil thrower; and a space enclosing the outer periphery of said oil-thrower facing part and opening outwardly between said oil-thrower facing part and the seal ring to discharge lubricant, wherein said seal plate has an inner opening into which a press-fit plate is pressed, a diameter of said inner opening being smaller than an outer diameter of said impeller and being at least equal to a minimum working bore diameter for machining of the outer periphery of said oil-thrower facing part or machining of oil discharge openings provided in said oil-thrower facing part and extending from the oil sump and passing through the oil-thrower facing part.