Marine Engines

Yanmar 6HYM-WET Marine Diesel Engine

Powerful and Friendly to People and Environment!

• Fuel Economy & Low Emission (meets IMO Tier 2 Compliant)
• Operational Efficiency (High Torque)
• Excellent Durability and Reliability
• Safety and Easy Maintenance

A massive diesel featuring massive power
- High thru-put twin turbos, make possible the supply of ultimate volumes of fuel and air.
- Aiming to achieve the highest levels of fuel economy together with easiest maintenance requirements, this engine seeks to be easier on the environment and easier on the operator.
- A brilliant new high power engine to fill a wide range of needs, from fast fishing boats, to patrol boats, fast ferries etc.

Performance
700hp (515kW) at 2200rpm in the S operating mode
This 165mm long stroker 13.7 liter class diesel, with big breathing valves for better airflow, the hi performance small twin turbos for compactness, less turbo lag, more compact air charging, and the numerous other performance features deliver power in large amounts over a wide operating range, especially under high load conditions.

600hp (441kW) at 2100rpm in the M operating mode
For users who require engines to run full throttle for up to 10 hours, this lower tune version will work hard in conditions demanding almost daily use (see performance chart).

500hp (368kW) at 1950rpm in high load operating mode
This 165mm long stroker 13.7 liter class diesel, with big breathing valves for better airflow, the hi performance small twin turbos for compactness, less turbo lag, more compact air charging, and the numerous other performance features deliver power in large amounts over a wide operating range, especially under high load conditions.

Good Fuel Economy together with Lower Emission
The micro-sized multiple holes in the all-new injectors produce an even finer fuel-oil mist and, combined with new perfectly matched combustion chambers and new cylinder head shapes, produce even more power. It is power delivered smoothly, due to optimum combustion conditions being maintained across a far wider operating range.

Good Fuel Economy across a wide revolution range
And it leads directly to the bonus of lower exhaust emissions and lower fuel consumption. The boost compensator dramatically reduces black smoke under hard acceleration. This engine produces low NOx levels and has been designed with environmental issues in mind. It has cleared the emission regulations of Protocol VI of the International Convention for the Prevention of Pollution from Ships.

A Tough, Reliable Engine
Toughness and reliability have moved ahead in large steps thanks to the steady progress of technology. Modern technology makes possible the hi-tech iron block and head, the special surface treatment of the cylinder liners, the advanced design of the water cooled manifold - in fact a whole host of new features which add sustainability to the overall toughness and reliability of this engine.

This engine features a stronger cylinder block and cylinder head, stronger head bolt bosses, stronger cylinder liner rack for uniform rack face pressure, stronger main bearing caps. Cylinder wear and lube oil consumption are both reduced by the specially treated cylinder liners, and by the nitrided SUS rings.


Design
Light weight, compact with a flat top and a low profile, the installation of this large capacity, high power engine is now possible in smaller vessels.

Safety
Easier Routine Inspection, Easier Maintenance
Large inspection windows on the side of the block allow in-site replacement of pistons. Lube Oil filter is easy-to-replace cartridge type. Full mechanical engine management avoids the chance of delicate and expensive electronics failing in hot, marine engine room conditions. Maintenance is simplified, inspection and replacement costs are lower. Reliability and durability are enhanced. Engine is user friendly.