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http://dx.doi.org/10.14775/ksmpe.2014.13.4.069

Thermal Shock Durability Test of a Gasoline Turbocharger Waste Gate Valve Assembly Manufactured by a Metal Injection Molding  

Nam, Chungwoo (Graduate School of Mechanical Engineering, Keimyung University)
Han, Manbae (Department of Mechanical and Automotive Engineering, Keimyung University)
Chun, Bongsu (Graduate School of Mechanical Engineering, Keimyung University)
Shin, Jaesik (Graduate School of Mechanical Engineering, Keimyung University)
Kim, Jongha (Headquarter of Research and Development, PIMkorea)
Min, Doosik (Headquarter of Research and Development, PIMkorea)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.13, no.4, 2014 , pp. 69-74 More about this Journal
Abstract
A waste gate valve (WGV) assembly for a gasoline turbocharger is typically manufactured by means of precision casting. In this study, however, it was newly manufactured in a more innovative way, metal injection molding (MIM) using Inconel 713C alloy, and its performance was tested in a 1.6L direct injection gasoline engine by a thermal shock durability test that lasted 300 hours, after which the results were compared to those of a precision-cast WGV assembly with regard to the engine intake boost pressure, turbine wheel speed, and transient intake pressure. It was found that the two WGV assemblies showed similar performance levels throughout the durability test.
Keywords
Waste Gate Turbocharger; Gasoline Engine; Waste Gate Valve; Metal Injection Molding;
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