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6M M46DF

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

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌‌​‍‍⁠‌‌⁠​‍​‌⁠‍‌⁠
6,600 kWPower
6Cylinders
460 mmBore
610 mmStroke
500 rpmMCR RPM

The Caterpillar MaK 6M M46DF is a medium‑speed, six‑cylinder, dual‑fuel (diesel/LNG) 4‑stroke main propulsion engine delivering up to 6 600 kW at ~500 rpm, designed for high power density and low emissions.

Specifications

Technical data.reference — unverified

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Displacement per cylinder101.3 liters
Power per cylinder900 kW/cylinder at 500-514 rpm
Bmep21.3/20.7 bar
Fuel consumption (diesel mode)186 g/kWh
Fuel injection systemCommon-Rail-Ignition fuel oil system with cylinder selective gas injection
Turbocharged charge air cooledYes
Four-stroke non-reversibleYes
IMO complianceIMO Tier II in diesel mode; IMO III in gas mode
Methane slip (gas mode)Minimal (stated as feature; specific values not publicly disclosed)
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