Marelli Corporation

Hiroyuki Okamoto

Satoru Yokoshima

In a manufacturing method of a turbine housing having an exhaust gas flow path, the exhaust gas flow path in the turbine housing is formed of a sheet-metal-made divided body and a cast-metal-made divided body, the sheet-metal-made divided body is formed by press molding a sheet metal material, and the cast-metal-made divided body is molded by casting, when the cast-metal-made divided body is cast, one end of the sheet-metal-made divided body is cast into the cast-metal-made divided body by melting the one end of the sheet-metal-made divided body such that the original shape thereof is disappeared.

Manufacturing method of turbine housing

A turbine housing is provided with an inner pipe forming a spiral-shaped exhaust gas flow path, an exhaust-air-inlet-side flange serving as an exhaust gas inlet to the inner pipe, and an outer pipe that, together with the exhaust-air-inlet-side flange, covers and seals the inner pipe. The outer pipe has an opening through which the washing fluid can pass through and a closing member that closes the opening, and a space through which the washing fluid can pass through is formed between the inner pipe and the exhaust-air-inlet-side flange.

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Saitama, Japan

Hiroyuki Okamoto