| 摘要 |
An object is to provide a turbo compound system that has high energy-saving efficiency and improved output or efficiency. In a turbo compound system including a plurality of exhaust turbochargers (3, 4), a power turbine (5), a steam turbine (10) driven by steam generated by an exhaust-gas economizer (11), a turbo-generator (25) connected to rotation shafts of the power turbine (5) and the steam turbine (10), and a control unit that controls an operation of the exhaust turbochargers (3, 4), the power turbine (5), and the steam turbine (10), one of the exhaust turbochargers (3) is stopped when an engine load on the engine body (2) is less than or equal to a predetermined value, and an amount of exhaust gas extracted from the engine body (2) is reduced to reduce an output of the power turbine (5). |
