| 摘要 |
<p>PURPOSE:To operate an exhaust turbine efficiently from a low speed to a high speed region with a simple structure containing small number of parts by moving high speed vane lines and low speed vane lines in a nozzle part according to a flow rate of exhaust gas. CONSTITUTION:A pair of ring housing chambers 13, 15 on a side wall opposing to a nozzle part 11 located between an exhaust gas passage 10 and an exhaust gas turbine. High speed vane lines 16 moving from the ring housing chamber 13 to the nozzle part 11 and vise versa are arranged 22 inclined in the direction of a normal line of the exhaust turbine. Low speed vane lines 17 which move between the nozzle part 11 and the ring housing chamber 15 interlockingly with the motion of the high speed vane lines 16 are arranged in the direction of a tangential line of the exhaust turbine 22. The high speed vane lines 16 and the low speed vane lines 17 are moved in the nozzle part 11 according to an amount of exhaust gas introduced from the exhaust gas passage 10 through the nozzle part 11 to the exhaust gas turbine 22. The exhaust turbine 22 can be efficiently operated from a low speed area to a high speed area with a simple structure.</p> |
