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6F21

Product catalog summary

Customer Benefits
The 6F21 propulsion diesel engine features advanced Common Rail technology with a high-end injection system operating at 2200 bar, ensuring compliance with strict emissions regulations and delivering competitive performance. The engine is equipped with highly efficient turbochargers that maintain high performance while controlling fuel consumption. It also includes individual cylinder heads for easy maintenance and key components made from highly reliable materials.

Specifications
The engine has six cylinders in line, with a bore and stroke of 127 x 165 mm, and a total displacement of 12.5 liters. It rotates counterclockwise with an idle speed of 700 RPM. The flywheel housing is SAE 1, and the flywheel is SAE 14".

Rated Power and Fuel Consumption
The engine offers different power ratings and fuel consumption levels depending on the duty:

P3: 599 kW (815 HP) at 2300 RPM with fuel consumption of 202-220 g/kWh.
P4: 662 kW (900 HP) at 2300 RPM with fuel consumption of 201-223 g/kWh.
P5: 735 kW (1000 HP) at 2300 RPM with fuel consumption of 186-228 g/kWh.

Applications
The engine is suitable for various applications:

P1 Continuous Duty: Deep sea trawlers, tug boats, freighters, ferries, etc.
P2 Heavy Duty: Similar to P1 with additional applications.
P3 Intermittent Duty: Seasonal passenger vessels, fishing boats, etc.
P4 Light Duty: Private pleasure boats, military fast vessels, etc.
P5 High Performance Duty: Private and multi-hull pleasure boats.

Cooling and Lubrication Systems
The engine features a two-stage cooling circuit with a built-in HT thermostatic valve, an integrated fresh water expansion tank, and a high-efficiency tubular heat exchanger. The lubrication system includes full-flow lube oil filters and a fresh water-cooled lube oil heat exchanger.

Fuel and Air Systems
The fuel system uses a common-rail electronic injection with a high-pressure pump and shielded high-pressure injection rail. The intake air and exhaust system includes a double flow raw water-cooled intake air heat exchanger module and a high-efficiency dry turbocharger with ball bearing technology.

Electrical System
The engine operates on a 24V DC insulated electrical system with an electrical starter and a 190A battery alternator. Optional equipment includes a wet exhaust, PTO elastic coupling, and an electric drain system.

Reference Conditions
The engine's performance is based on reference conditions of 25°C ambient temperature, 100 kPa barometric pressure, and 30% relative humidity. Fuel oil specifications include a relative density of 0.840 ± 0.005 and a lower calorific power of 42,700 kJ/kg.

Catalog excerpts

Propulsion Diesel Engine 1 Baudouin.com

Open the catalog to page 1

Number of cylinders Bore and stroke (mm) Total displacement (L) Engine rotation Idle speed Flywheel housing Flywheel 6F21 Propulsion Diesel Engine counter clockwise Most advanced Common Rail technology and high-end injection system (2200 bar), key to achieve strict emissions regulations and competitive performances. Highly efficient turbochargers optimized to operate with high performance keeping fuel consumption under control. Individual cylinder heads allowing easy maintenance. Key components made of highly reliable materials. Engine load variations Important Very important Important Average...

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6F21 Propulsion Diesel Engine Dimensions and dry weight (mm/kg) Standard equipment Cooling System Two - stage cooling circuit with built - in HT thermostatic valve Integrated fresh water expansion tank High efficiency tubular heat exchanger Gear driven centrifugal fresh water pump Self priming raw water pump with bronze impeller Lubrication System Full flow lube oil filters duplex type Fresh water cooled lube oil heat exchanger Fuel System Common-rail electronic injection High pressure pump with shielded high pressure injection rail and pipes Fuel oil filter duplex type External fuel pre-filter...

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6F21 Propulsion Diesel Engine Performance P5 735@2300 Torque BSFC (g/kWh) BSFC (g/kWh) BSFC (g/kWh) Power definition Reference conditions Ambient temperature Barometric pressure Relative humidity Raw water temperature Relative density Lower calorific power Consumption tolerances Inlet limit temperature Our ratings also comply with classification societies maximum temperature definition without power derating. Ambient temperature Raw water temperature M.P.S.6F21.EN.06.23 Moteurs Baudouin reserve the right to modify these speciﬁcations, without notice. Document not contractual.

Open the catalog to page 4

6F21

6F21

Catalog excerpts

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