A-9 高圧力比形AT14過給機用遠心圧縮機の空力設計(空力・圧縮機,一般講演)

概要

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High boost pressure is required to increase the specific output power of diesel engines. The pressure ratio of compressors for turbochargers is continuously increasing to meet these engine requirements. IHI developed a new turbocharger, AT14 mounting a high pressure ratio centrifugal compressor, applied to 500kW class diesel engines. In high pressure ratio centrifugal compressors, it is expected that the complicated flow features related to occurrence of shock wave will deteriorate compressor efficiency and operating range. To avoid these problems, several countermeasures were taken in the aerodynamic design of AT14 centrifugal compressor. Newly designed compressors realized with the expected performance, stage pressure ratio, and efficiency. This paper outlines the aerodynamic design of the centrifugal compressor for AT14.
2010-10-20