Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Koen Kramer

Yasuaki Jinnai

Hiroyuki Arimizu

A turbine housing assembly includes a plurality of constituent members connected to one another and easily manufactured. The turbine housing assembly includes a scroll part, an annular lid part, an exhaust gas outlet and a connection part connectable to a bearing housing for a turbine shaft. The scroll part and the connection part are each formed of a single piece of sheet metal and each is welded to the annular lid part that is orthogonal to a turbine axial direction so that the scroll part and the connection part are connected to each other via the annular lid part. Such a turbine housing assembly is of reduced weight, is quite easy to manufacture, of reduced cost, and can be made, at least in part, of materials having lower heat capacity as compared to conventional turbine housings made of sheet metal.

Turbine housing assembly and manufacturing method of turbine housing assembly

An object is to provide a turbine housing assembly in which reduction of weight, facilitation of manufacture, cost-cutting, and reduction of heat capacity are further promoted compared to a conventional turbine housing made of sheet metal. A turbine housing assembly includes a plurality of constituent members connected to one another to constitute a turbine housing into which a turbine wheel is inserted. The turbine housing assembly at least includes a scroll partand an exhaust partof a tubular shape having a separate body separate from the scroll part. The scroll partis formed by processing a single piece of sheet metal so that, on a back face side of a bottom face partof the scroll part, a recess portionon which a through-hole of an exhaust gas outletB is formed and a projecting portionformed by a bottom surface of an exhaust gas flow pathA projecting toward the back face side are formed, the projecting portionsurrounding the recess portion. The recess portionof the scroll partis connected to an end portionof the exhaust partin a turbine axial direction so that the exhaust partis in communication with the exhaust gas outletB of the scroll partin a state where a gap 'a' is formed between an outer circumferential face of the exhaust partand the projecting portionof the scroll part

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Almere, Netherlands

Koen Kramer