LOCOMOTIVE POWER UNIT ON BASE OF TWO-SHAFT GAS-TURBINE ENGINE Russian patent published in 2007 - IPC B60K5/00 

FIELD: railway transport; locomotive power units.

SUBSTANCE: proposed locomotive power unit on base of two-shaft gas-turbine engine contains two-shaft gas-turbine engine with compressors of first and second stages, and two turbine stages connected by gas duct with free turbine. System contains high-pressure bypass gas duct with valve connected output of first stage of turbine with output of free turbine, and bypass low-pressure gas duct connecting output of turbine second stage with output of free turbine. Two-shaft gas-turbine engine is furnished with starter and speed pickup of one of shafts of gas-turbine engine connected electrically with control system of power plant. Free turbine has adjustable nozzle assembly with drive of nozzle assembly of free turbine electrically connected with control system. Two-shaft gas-turbine engine and/or free turbine are furnished with cooling system combined with radial clearance adjustment systems. Cooling systems of two-shaft gas-turbine engines and free turbine are connected successively. Cooling system of gas-turbine engine contains oil cooling system.

EFFECT: improved starting conditions of power unit and its economy.

6 cl, 2 dwg