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  • MAN V-12 2000: Twelve Cylinders of Maximum Power for Luxury Yachts

MAN V-12 2000: Twelve Cylinders of Maximum Power for Luxury Yachts

MAN V-12 2000

John Lehenbauer
Oct 8, 2019
Attempting to cross the high seas in a large luxury yacht requires a significant amount of power. The elaborately decadent vessels displace a tremendous amount of water, so a couple of simple outboard engines definitely aren't the type of powerplants that can get the big boats moving. Large, high-output diesel engines like the MAN V-12 2000 are called on to get yachts underway. And, in many cases, multiple units are needed for propulsion.
Since its inception, the high-speed MAN V-12 2000's only purpose is to be a performance-oriented diesel for luxo vessels. The V-12 engine boasts a very high power-to-size ratio for its 24L displacement. With a staggering 2,000 hp on tap, the diesel commands 83 hp per liter. Using a V-formatted engine provides outstanding power efficiency and compactness compared to larger-displacement engines with similar output.
Photo 2/4   |   This AB 100 luxury yacht from AB Yachts uses three MAN V-12 2000 engines for a total power output of 6,000 hp. With all those ponies on tap, the 100-foot water-jet-propelled glider accelerates to a top speed of 55 knots (63 mph).
Keeping the engine's overall size down without compromising its power gives ship builders several advantages. An engine room can be smaller, creating more flexibility in designing a vessel's interior. The reduction in space needed for the propulsion units also allows for a lighter and more streamlined performance-oriented hull to be developed.
The V-12 2000 is the next evolution of MAN's V-12 Series of marine engines. The 2000 took the "highest-output engine" title from the MAN V-12 1900. The new 12-cylinder engine's power gain comes by way of a series of modifications and technological advancements.
The engine's common-rail-injection system is revamped to provide more precise fuel delivery, and new wastegate turbochargers are used to achieve an efficient supply of compressed air for each cylinder. A seawater-cooled charge-air cooler ensures boost is at an ideal temperature for combustion.
Photo 3/4   |   The 24L MAN V-12 2000 has a high-power density, making 83 hp per liter. An ideal combination of power, lightweight design, and compact size gives the engine an advantage over comparable powerplants.
Unique for this engine are its 12 individual cylinder heads (with four valves each), which optimize fuel and air delivery and are easy to maintain. To further ensure the engine remains trouble-free for a long time, the crankcase is reinforced in strategic locations for added strength without increased weight. The high-strength casting is designed with oil and water ducting for better efficiency and removable cylinder liners for reduced service downtimes.
The engine is optimized for improved thermal relief and features a seawater-cooled plate-style heat exchanger that helps maintain proper engine temperature.
MAN's latest electronic injection control (EDC17) system ensures the 2000's combustion is as efficient as possible. The fueling setup promotes a quieter-running engine with less vibration and lower consumption. Along with the EDC17, an electronic monitoring system keeps tabs on engine performance and provides diagnostics. The advanced management and data recording also helps the V-12 meet EPA Tier 3 and IMO Tier II emissions standards.
Photo 4/4   |   The primer'd V-12 2000 awaits a final coat of paint in the spray booth. Color schemes are done to customers' specifications.
SPECIFICATIONS
Engine: MAN V-12 2000
Displacement: 24.2L (1,476.78 ci)
Engine Layout: V-12
Valvetrain: 48-valve
Bore x Stroke: 5.03 x 6.18 inches (128 x 157 mm)
Compression Ratio: 17:1
Power: 2,000 hp (1,471kw)
Torque: 4,794 lb-ft (6,500 Nm)
Emissions: EPA Tier 3 recreational, IMO Tier II
Induction: Wastegate turbocharger
Cooling System: Plate-style heat exchanger, seawater-cooled
Fuel System: High-pressure common-rail direct-injection
Lubrication System: Wet sump
Dry Weight: 5,247 pounds (2,380 kg)
Length: 85 inches (2,159 mm)
Width: 45.4 inches (1,153 mm)
Height: 50 inches (1,272 mm)

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