TURBOCHARGER AND WHEEL HOUSING

摘要

A turbine housing of a turbocharger is formed by joining a scroll body with a base body. An exhaust passageway is formed between the scroll body and the base body. At the joint portion between the scroll body and the base body, an inside corner portion is formed by an inner peripheral surface of the scroll body that faces the exhaust passageway, and an outer peripheral surface of the base body that also faces the exhaust passageway. An inside fillet that is shaped to change the direction of exhaust gas along the inner peripheral surface of the scroll body to a direction along the outer peripheral surface of the base body is formed on the inside corner portion.