FIELD: engines and pumps.
SUBSTANCE: engine runs in various operating conditions including first idle conditions stage, second cruising stage with speed exceeding idle stage and third high-speed stage exceeding that of cruising speed. Turbine housing comprises heaters 30 to increase clearance by increasing turbine ring ID. Turbine housing is heated at first or third stages to prevent vane edge wear caused by contact with turbine ring in transition to another working stage. Preferably, heaters comprise at least one resistive circuit arranged on outer housing.
EFFECT: higher efficiency.
16 cl, 6 dwg
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