The multi-engine consists in one embodiment of a relatively large turbocharged ship's diesel engine and three smaller turbocharged auxiliary or stand-by diesel engines. The main engine is primarily adapted for propelling the ship while the auxiliary engines solely drive electric generators. As the turbocharger of the main engine produces a large amount of charging air at normal operation, the charging air system of said engine is connected in parallel with the charging air systems of the auxiliary engines through a conduit, whereby surplus charging air from the main engine is utilized to raise the charging air pressure in the auxiliary engine(s). |