燃料電池用1軸2段エアコンプレッサの性能評価技術

抄録

Mitsubishi Heavy Industry Engine & Turbocharger has developed Electric Air Compressor for Fuel Cell, utilizing our expertise in high-speed rotation technology and mass production honed through turbocharger development to achieve an efficient two-stage supercharging capable of reaching 110,000rpm．This paper emphasizes the design of the intermediate piping connecting the low-pressure compressor to the high-pressure compressor．Through detailed flow analysis and pressure measurements in previous prototypes, it was shown that the shape of the intermediate piping contributes to a decrease in pressure ratio and aerodynamic efficiency in high pressure stage．To address this, we devised a J-shaped piping configuration and achieved performance improvement based on analysis and experimental measurements．