| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radial turbine and a supercharger, which improve performance in a wide range from a low flow rate side to a high flow rate side while securing a margin of a strength design of a radial turbine impeller. <P>SOLUTION: The radial turbine 10 includes: a radial turbine impeller 11; a nozzle flow passage 27A leading exhaust gas to the leading edge 11A of the radial turbine impeller 11; and a variable nozzle unit 27. First turbine blades 101 and second turbine blades 102 different in length up to a trailing edge 11B in an axial direction are circumferentially and alternately disposed to the radial turbine impeller 11. The second turbine blade 102 is axially shorter than the first turbine blade 101, is shorter than the throat position of the first turbine blade 101, and is longer than the flow passage width of the nozzle flow passage 27A. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
