自動車用過給機の小形斜流タービンの開発 : ラジアルタービンとの特性比較

概要

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In recent, years turbochargmg technologres for passenger cars have progressed significantly. However, "Turbo Lag" is still one of the most important problems in turbocharging technologies. In order to improve response to acceleration, it is effective to reduce the polar moment of inertia of rotating parts. The turbine rotor designed with small diameter, light weight contributes toward reducing inertia moment of the rotating parts. A mixed-flow turbine was developed to improve response to acceleration and achieve maximum efficiency at lower velocity ratio. Two different blade shape rotors were manufactured and tested. The rotor I acceleration time was 13% shorter than the conventional radial turbine. The rotor I achieved a maximum efficiency 77% at a velocity ratio of 0.65,the rotor II attained 78% at 0.64. This paper descries the results of computer analysis results and experimental test data of the mixed-flow turbine for passenger car applications.
社団法人日本ガスタービン学会の論文
1997-06-10