| 摘要 |
<p>A variable geometry turbine in which an inlet passageway has a movable wall (4) the position of which is adjusted to match the turbine characteristics to the flow rate through the turbine. Nozzle vanes (6) extend through the movable wall (4) and are mounted on a nozzle support (7) which is normally stationary so that the nozzles contact the facing wall (5) of the inlet passageway. The nozzle support (7) is arranged to move with the movable wall (4) however when the movable wall (4) opens the inlet passageway beyond a predetermined extent so that the nozzle vanes (6) are at least partially retracted when the movable wall (4) is in the fully open position.</p> |
