OceanSphereENGINES

8L46F

Main Engine 4-Stroke · Main Engines (4-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌‍​​⁠⁠‌‍‌​⁠‍‌⁠‌​‌
9,120 kWPower
8Cylinders
460 mmBore
580 mmStroke
600 rpmMCR RPM

Crew members, engineers, and operators on board ships depend heavily on reliable maritime equipment to ensure safe and efficient operations. Wärtsilä's 8L46F engine, part of their renowned Wartsila 46F family, supports these critical roles with its high power density per cylinder and advanced common rail fuel injection system. Operating at 600 rpm, this engine delivers a robust 9120 kW, making it a cornerstone in the marine industry since 2004. With a verified operational history of over 7.2 million hours, Wärtsilä's commitment to durability and reliability is evident. However, operators should be aware that common failures include corroded exhaust valves due to substandard fuel quality, turbocharger damage from valve failures, and cylinder liner wear requiring regular inspections. Regular maintenance and adherence to manufacturer guidelines are essential for optimal performance.

Specifications

Technical data.reference — unverified

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Hubraum pro Zylinder96,4 Liter
Leistung pro Zylinder (46F)1200 kW @ 600 rpm
SFOC (Specific Fuel Oil Consumption)170-173 g/kWh ISO
Ventile2 Einlassventile, 2 Auslassventile pro Zylinder
KraftstoffeinspritzungDirekte Einspritzung (Twin-Pump)
AufladungTurbolader mit Ladeluftkühlung
Betriebsstunden Feldhistorie7.200.000+ Stunden seit 2004
Gewicht 6L4695 Tonnen
Gewicht 12V46F177 Tonnen
Gewicht 16V46214 Tonnen
Rated power9 600 kW
Dimensions (mm) and weights (tonnes)10 080 mm
Weight124 tonnes
Cylinder output1200 kW
Engine speed600 rpm
Engine output9600 kW
Mean effective pressure2.49 MPa
Flow at 100% load (combustion air)16.8 kg/s
Temperature at turbocharger intake, max.45 °C
Temperature after air cooler, nom.50 °C
Flow at 100% load (exhaust gas)17.44 kg/s
Flow at 85% load (exhaust gas)14.88 kg/s
Flow at 75% load (exhaust gas)13.92 kg/s
Flow at 50% load (exhaust gas)9.28 kg/s
Temp. after turbo, 100% load364 °C
Temp. after turbo, 85% load336 °C
Temp. after turbo, 75% load338 °C
Temp. after turbo, 50% load356 °C
Calculated pipe diameter for 35 m/s1067 mm
Jacket water, HT-circuit1216 kW
Charge air, HT-circuit2056 kW
Charge air, LT-circuit1048 kW
Lubricating oil, LT-circuit976 kW
Radiation280 kW
Pressure before injection pumps (PT101) at 85% load - HFO900...950 kPa
SFOC at 75% load (LFO)181.1 g/kWh
SFOC at 50% load (LFO)183.1 g/kWh
Pressure before bearings, nom.500 kPa
Pressure after pump, max.800 kPa
Suction ability main pump, including pipe loss, max.40 kPa
Prelubricating pressure, nom.80 kPa
Temperature before bearings, nom.56 °C
Temperature after engine, approx.75 °C
Pump capacity (main), engine driven228 m3/h
Pump capacity (main), electrically driven228 m3/h
Oil flow through engine170 m3/h
Prelubricating pump capacity (50/60Hz)45 m3/h
Oil tank volume in separate system, min17.0 m3
Oil consumption at 100% load, approx.0.7 g/kWh
Crankcase ventilation flow rate at full load1700 l/min
Crankcase ventilation backpressure, max.0.4 kPa
Oil volume in turning device9.5 l
Oil volume in speed governor1.7 l
Pressure at engine, after pump, nom.250 + static kPa
Pressure at engine, after pump, max.530 kPa
Temperature before cylinders, approx.74 °C
Temperature after charge air cooler, nom.91...95 °C
Starting air system (Note 6) Pressure, nom. (PT 301)3000 kPa
Pressure at engine during start, min. (20°C) (PT 301)1500 kPa
Pressure at engine during start, max. (20°C) (PT 301)3000 kPa
Low pressure limit in air vessels1800 kPa
Consumption per start at 20°C (successful start)8.0 Nm3
Consumption per start at 20°C, (with slowturn)9.0 Nm3
Pump [kW]50
Electric motor [kW]55
Weight [kg]900
Water inlet flow rate(l/min)37 l/min
Speed600 rpm
Frequency40 Hz
MX [kNm]202 kNm
Weights without flywheel [ton]124 ton
Engine3.3
Lifting device6.4
Transport cradle3.4
Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

The Wärtsilä 8L46F is a marine engine designed for efficient propulsion and power generation in various marine applications.

Features

  • low fuel consumption
Source: Wärtsilä 8L46F datasheet, p. 27

Options

  • CPP Variable Speed
  • CPP Constant Speed
  • DE Constant Speed

Standards

  • ISO 15550
Source: Wärtsilä 8L46F datasheet, p. 28
Wärtsilä 8L46F – Drawing (be74d4536d9f_S11-194 S. 12)
Drawing · be74d4536d9f_S11-194 · S. 12
Wärtsilä 8L46F – Drawing (be74d4536d9f_S11-194 S. 13)
Drawing · be74d4536d9f_S11-194 · S. 13
Wärtsilä 8L46F – Drawing (be74d4536d9f_S11-194 S. 15)
Drawing · be74d4536d9f_S11-194 · S. 15
Wärtsilä 8L46F – Page preview (be74d4536d9f_S11-194 S. 11)
Page preview · be74d4536d9f_S11-194 · S. 11
Wärtsilä 8L46F – Page preview (be74d4536d9f_S11-194 S. 14)
Page preview · be74d4536d9f_S11-194 · S. 14
Wärtsilä 8L46F – Page preview (be74d4536d9f_S11-194 S. 16)
Page preview · be74d4536d9f_S11-194 · S. 16
Wärtsilä 8L46F – Page preview (be74d4536d9f_S11-194 S. 17)
Page preview · be74d4536d9f_S11-194 · S. 17
Source: Wärtsilä 8L46F datasheet, p. 26
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