350
1894-2721 kW at 300-425 min-1
TOTAL SERVICE
WÄRTSILÄ DEUTZ MARINE ENGINES
Characteristics
•• Four stroke 60° V-engines.
•• Bedplate, crankcase and two cylinder blocks.
•• Direct fuel injection.
•• Two turbochargers with air cooler.
•• Water-cooled cylinders.
•• Mechanical speed governing.
•• One inlet and one exhaust valve per cylinder.
Benefits
•• Engine can be furnished for direct reversing, clockwise or counter-clockwise running.
Engine description
Crankcase The crankcase consists of a bedplate and a frame.
Cylinder block Two cylinder blocks are mounted on the crankcase, resulting in an A and a B-bank.
Crankshaft The forged crankshaft is made of Siemens-Martin steel. It is mounted in the bedplate. The
counter weights are bolted on the crankshaft.
Torsional vibration damper A viscous-fluid damper is mounted on the crankshaft.
Cylinder liner The water-cooled cylinder liner is made of high-grade cast iron.
Connecting rod The horizontally split connecting rod has four bolts securing the cap.
Piston The piston is made of high-grade light-metal alloy. In the engine a cooled or uncooled piston is
mounted, which depends on engine application and engine output.
A cooled piston has 6 piston rings.
An uncooled piston has 7 piston rings.
Cylinder head The water-cooled cylinder head is made of grey cast iron. The cylinder head has one inlet and
one exhaust valve, each mounted in a valve housing. Some applications have rotocaps fitted on
the exhaust valves. If the engine is running on HFO, the injector valves are cooled.
Camshaft V-engines have two camshafts. Each gear driven camshaft consists of two coupled sections.
Reversible engines have a synchronizing shaft, which couples both camshafts, for shifting them
together for reverse.
Injection pump The injection pump is a V-shaped block-type.
Governor A mechanical governor controls the engine speed.
Fuel system A pre-filter, a fuel feed pump, a fine filter and a spill valve are mounted in the fuel system.
Lubricating oil system An engine-mounted gear pump circulates the lubricating oil through the engine. The system is
provided with a priming pump, a duplex filter, and an externally mounted oil cooler.
Starting system Compressed air starting via pneumatically controlled starting valves mounted in the cylinder
heads.
Cooling water system The engine is standard provided with a closed circuit cooling water system. In special cases, a
straight-through cooling water system is provided.
Exhaust gas system The engine has insulated exhaust manifolds.
Charge air system Intake silencer with air filter.
Turbocharging The engine has water-cooled turbochargers and a charge air cooler.
Flywheel brake system Direct reversing engines have a flywheel brake system to stop the engine quickly, when a
reversal of the rotation direction is needed.
EIAPP The engine can be provided with an EIAPP certificate if it complies with the NOx Technical Code
according IMO regulations MARPOL 73/78 - Annex VI.
Technical data
Technical data
Engine type R/S/BV 12 M 350
Model 60º V-engine
Number of cylinders 12
Bore / stroke mm 400 / 500
Displacement l 753.98
Compression ratio 12
Direction of rotation Clockwise or counter-clockwise
Continuous operation
Engine speed min-1 300 350 425
Engine output kW 1894 2206 2721
Mean effective pressure bar 10.06 10.06 10.06
Specific fuel consumption
At full load g/kWh 208 211 216
At ¾ load g/kWh 208 209 212
At ½ load g/kWh 209 211 211
Oil consumption kg/h 2.5 3.1 3.9
Idling speed min-1 90 90 90
Note:
The values given in this document are for information purposes only and not binding.
The date provided in the offer is decisive.
0210 WNL0038
Dimensions
C
A B
Principal engine dimensions (mm) and weights (t)
Weight
Engine type A B C
(dry)
R/S/BV 12 M 350 6508 2785 3688 ± 55
Letter ‘B’ refers to turbocharging principle version / Büchi system
Letter 'V' refers to four-stroke
Letter ‘M’ refers to water-cooled version
Letter ‘R’ refers to reversible version
Letter ‘S’ refers to ship version
WÄRTSILÄ® and DEUTZ® are registered trademarks. Copyright © 2010 Wärtsilä Corporation.
Wärtsilä Netherlands B.V.
P.O. Box 10608, 8000 GB Zwolle, The Netherlands l Tel. +31 38 425 32 53
l Fax +31 38 425 34 71 l e-mail service.sales.nl@wartsila.com l www.wartsila.com
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