Turbine housing assembly with wastegate

摘要

An assembly includes a cast cartridge component (205,305) that includes a base plate (207,307) having an opening (210) configured for receipt of a turbine wheel, a cylindrical wall (238) that includes a shroud portion, one or more supports (234) disposed between the cylindrical wall (238) and the base plate, an exhaust conduit (224) that has an inlet (220,320), an outlet (240,340) and a wastegate opening (226,328) positioned intermediate the inlet and the outlet, and a substantially planar surface (326) integral to the exhaust conduit, the wastegate opening located on the planar surface; and a wastegate outlet component (370) that includes a cylindrical portion that extends between and defines an inlet and an outlet, and a cover portion (386) configured to cover the substantially planar surface of the cast cartridge component to form a wastegate chamber (280,380) where one or more openings provide for flow of exhaust from the wastegate chamber to the cylindrical portion.