Wärtsilä Medium-Speed Marine Diesel Engines

The Oasis of the Seas, equipped with six Wärtsilä 46 engines.
MEDIUM-SPEED ENGINES
Medium-speed diesel and dual-fuel
engines for reliability
and total economy .................................3
Compliance with environmental
regulations and other standards............4
Main features.........................................4
Engine performance ..............................5
Engine design ........................................6
Engine block......................................6
Crankshaft and bearings.....................6
Connecting rod ..................................7
Cylinder liner and antipolishing ring.....7
Piston & piston rings ..........................8
Cylinder head.....................................8
Multiduct ...........................................9
Camshaft and valve gear ....................9
Operational systems
Fuel injection system........................10
Turbocharging system ......................11
Cooling system ................................12
Lubricating oil system.......................12
Automation system ..........................12
Dual-fuel technology ...........................14
Maintenance features..........................18
Services ..............................................18
2
The Thetis, equipped with a Wärtsilä 20 engine.
POWER RANGE FOR WÄRTSILÄ MEDIUM­SPEED ENGINES
DIESEL ENGINES
Wärtsilä 20
Wärtsilä 26
Wärtsilä 32
Wärtsilä 38
Wärtsilä 46
Wärtsilä 46F
Wärtsilä 64
DUAL­FUEL ENGINES
Wärtsilä 20DF
Wärtsilä 34DF
Wärtsilä 50DF
The submersible heavy load ship Blue Marlin is
equipped with three Wärtsilä 8L32 engines.
kW 5000 10,000 15,000 20,000 25,000