MR 506 SB3: Powerful and Reliable Marine Engine Solution
Discover what makes the MR 506 SB3 stand out – a 150 HP V6 diesel marine engine with 500 Nm of torque, 2000 bar injection, and advanced VGT turbocharger.
MR 506 SB3 Engine Overview
The MR 506 SB3 is a modern, reliable, and economical V6 diesel marine engine designed to meet the expectations of contemporary yacht owners. The engine features 150 HP power and 500 Nm of torque, achievable at just 2000 RPM. This provides ample power for smooth maneuvering, rapid acceleration, and economical cruising.
The MR506 engine family is renowned for its reliability, easy maintenance, and durability. The SB3 version is an updated, quieter, and more efficient interpretation of this line.
Key Technical Features
150 HP power and 500 Nm torque
150 horsepower from a V6 diesel engine is the optimal balance between economy and performance.
500 Nm, achievable at 2000 RPM, provides:
excellent traction at low RPMs,
smooth yacht movement even when loaded,
efficient fuel consumption.
6-cylinder, 24-valve construction
V6 architecture ensures smooth operation and reduced vibrations, which is especially important for marine comfort.
24 valves optimize air and fuel mixture intake, resulting in cleaner and more efficient combustion.
2000 bar injection system
This modern high-pressure system:
improves fuel atomization,
reduces smoke,
lowers consumption,
has a significant positive impact on ecology.
Double chain-driven camshaft
The chain drive is highly reliable and durable. This means:
lower maintenance costs,
precise valve operation,
greater resistance to marine loads.
VGT turbocharger with ball bearings
Variable Geometry Turbocharger (VGT):
increases power across all RPM ranges,
improves acceleration response,
reduces fuel consumption.
Ball bearings reduce friction and extend turbine lifespan.
Water-cooled turbine
This solution helps maintain stable operating component temperatures, prevents overheating, and ensures consistent performance even during long journeys.
Performance and Ecological Benefits
The MR 506 SB3 features quieter operation, reduced vibrations, and better fuel utilization. Due to high-pressure injection and precisely tuned combustion chambers, it emits fewer pollutants, meeting modern ecological standards.
The engine is also known for its:
robust construction,
corrosion resistance,
long-term reliability even in harsh marine conditions.
Adaptation for Yachts and Recreational Boats
The MR 506 SB3 is suitable for various marine vehicles:
small and medium yachts,
recreational boats,
sport boats,
cruise vessels.
Due to its economy and reliability, it is highly valued by captains who prioritize smooth and peaceful journeys.
Maintenance and Longevity
Properly maintained, the MR 506 SB3 can serve for decades. Recommended:
regularly change oil and filters,
monitor the cooling system condition,
use quality diesel fuel,
check turbine operation once per season.
These simple steps significantly extend the engine’s service life.
