MARINE DIESEL ENGINE

摘要

A marine diesel engine having superchargers, in which, when the superchargers are switched from single operation to parallel operation or from parallel operation to single operation, surging of a supercharger that is started up or stopped is prevented. The marine diesel engine has an exhaust pipe (L2) for connecting between an exhaust manifold (6) mounted on an engine body (2) and a turbine section (4a), a turbine inlet valve (10) connected to the middle of the exhaust pipe (L2), an air supply pipe (L4) for connecting between a compressor section (4b) and an air supply manifold (7) mounted on the engine body (2), a check valve (11) connected to the middle of the air supply pipe (L4) and becomes an open state when the exit pressure of the compressor section (4b) is not less than the exit pressure of a compressor (3b), an air release pipe (L9) having one end connected to the air supply pipe (L4) at its middle portion between the compressor section (4b) and the check valve (11), and an air release valve (12) connected to the middle of the air release pipe (L9).