FIELD: power industry.
SUBSTANCE: invention relates to power industry. The power unit contains engine with the exhaust line, turbine working to the exhaust line, bypass line connected with the exhaust line before the turbine and having the controlled bypass valve, and controller to control the bypass valve opening for the turbine bypass. The engine operates such, the power is transferred from the crankshaft to the turbine shaft and/or at least one of the following: engine load, engine speed, exhaust line pressure - is below the set values.
EFFECT: invention improves efficiency of the power unit operation.
12 cl, 2 dwg
