Turbine volute pipeline and moving blade structure

In the present invention, pipes of the turbine scroll and the turbine blades is improved. In the configuration of scroll radial turbine, the width ([Delta] R) and width (B) in the axial direction of rotation in the radial direction of scroll width ratio ΔR / B configured ΔR / B = 0.3 ~ 0.7. Further, rotor blades having a cut-away portion cut off a certain amount of angle on the shroud side and hub side of the inlet end surface of the working gas flowing.