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WÄRTSILÄ AL20 Service

Mdo: 450-820 kw at 720-1000 min-1 hfo: 420-760 kw at 720-1000 min-1 sulzer 4-stroke engines total service
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CHARACTERISTICS

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Water-cooled 6-, and 8-cylinder in-line-engines.
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Four stroke, direct fuel injection.
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Turbocharger and charge air cooling.
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Cylinder heads with 4-valve technology.
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Power-take off on both ends of crankshaft.
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Engine driven pumps on free end of crankshaft.

BENEFITS

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High reliability of the engine.
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Low operational costs due to easy maintenance and long maintenance intervals.
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Low fuel and lubricating oil consumption.
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Clean combustion, even on part load
TOTAL SERVICE
SULZER 4-stroke ENGINES
AL20
MDO: 450-820 kW at 720-1000 min
HFO: 420-760 kW at 720-1000 min
-1
-1

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Summary of Contents for WÄRTSILÄ AL20

  • Page 1 AL20 MDO: 450-820 kW at 720-1000 min HFO: 420-760 kW at 720-1000 min TOTAL SERVICE SULZER 4-stroke ENGINES CHARACTERISTICS • Water-cooled 6-, and 8-cylinder in-line-engines. • Four stroke, direct fuel injection. • Turbocharger and charge air cooling. • Cylinder heads with 4-valve technology.
  • Page 2 ENGINE DESCRIPTION Single-piece cast-iron crankcase with underslung crankshaft. Crankcase Drillings in the block for water and oil distribution to reduce the pipe work. Crankshaft The crankshaft is of low alloy steel, forged in one piece and fully machined. Counterweights on all cranks. A torsional vibration damper can be fitted to the free end. Thin-walled bearing shells fitted to both the main bearings and the big end bearings.

  • Page 3: Technical Data

    TECHNICAL DATA TECHNICAL DATA Engine type AL20 Model 6AL20 8AL20 Number of cylinders Bore / stroke 200 / 240 Displacement 16.39 - 16.80 Direction of rotation Clockwise or counter-clockwise, non-reversible Power ratings at 720 min at 750 min at 900 min...
  • Page 4 DIMENSIONS PRINCIPAL ENGINE DIMENSIONS (mm) AND WEIGHTS (t) Engine type type Weight Weight 6AL20 2780 1620 1190 1060 1350 1160 8AL20 3530 1620 WÄRTSILÄ ® and SULZER ® are registered trademarks. Copyright © 2010 Wärtsilä Corporation. Wärtsilä Netherlands B.V. P.O. Box 10608, 8000 GB Zwolle, The Netherlands Tel.

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