| 摘要 |
A variable geometry turbine comprising a turbine wheel 5 mounted within a turbine housing which defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls 32, 33. A cylindrical sleeve 30 is axially moveable across the inlet to vary the size of a gas flow path there through. The inlet is divided into at least two axially offset annular inlet portions by one or more axially spaced annular baffles 38 disposed between the first and second sidewalls. Inlet vanes 37 extend axially into at least one of the inlet portions and define circumferentially adjacent inlet passages. At least one of the baffles extends radially inboard of inlet vanes which extend into at least one of the inlet portions axially adjacent the respective baffle. The inlet may be divided into three axially offset annular inlet portions by two or more baffles.
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