Ceramic Turbine Wheel Developments for Mitsubishi Turbocharger

Mitsubishi Heavy Industries Ltd. is developing a ceramic turbine wheel to improve the response of the turbocharged engine. In this development, the Silicon Nitride Ceramic is considered most suitable for application to the turbocharger because of strength, reliability and adhesion to metal.

This report introduces the development of the Silicon Nitride turbine wheel for a Mitsubishi turbocharger by showing the design strength and test results.

Although further efforts for cost reduction are needed, the results of development demonstrated a satisfactory technical level and practical application in the near future is expected.