自動車用100kW CGTのタービンロータ・ノズルの開発

概要

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The ceramic radial turbine rotor and nozzle, which operate at the inlet gas temperature up to 1350℃, have been developed and achieved the required aerodynamic performance and durability in order to attain the goals of the 100kW automotive ceramic gas turbine engine. As for the rotor blade vibration, which occurred because of the resonances with the nozzle wakes, the design in which 2nd and 3rd order mode resonance points are removed from the operating range is implemented. The transient thermal stress analysis of the turbine rotor at the start and at the fuel cut has been performed and the prospect for reliability can be obtained. They are also evaluated in the engine test at the turbine inlet gas temperature of 1350℃ successfully and the performance goals of the ceramic gas turbine are almost attained.
社団法人日本ガスタービン学会の論文
1998-03-10