Cummins NTA855-M 450HP Marine Diesel Engine | Heavy Duty Propulsion Power

Engine Description:

The Cummins NTA855-M is a heavy-duty 6-cylinder marine main engine engineered for continuous-duty propulsion applications. This boat engine delivers a reliable 450 horsepower (336 kW) at 1800 RPM, making it an ideal power solution for commercial and industrial marine vessels. Featuring turbocharging and aftercooling technology, the NTA855-M Vessel Propulsion Engine ensures efficient combustion, enhanced durability, and compliance with IMO NOx emission standards.

Designed for applications operating under demanding load profiles, this engine provides excellent fuel economy, high torque output, and extended service intervals, all of which contribute to lower operating costs and superior vessel performance.

Specifications:

• Engine Model: NTA855-M
• Configuration: 6 Cylinders in Line, 4-Stroke Diesel Engine
• Displacement: 14 L (855 in³)
• Bore x Stroke: 140 mm × 152 mm (5.50 in × 6.00 in)
• Rated Power Output: 450 HP (336 kW) @ 1800 RPM
• Aspiration: Turbocharged and Aftercooled
• Fuel System: PT (Pressure-Time)
• Compression Ratio: 14.5:1
• Dry Weight (Engine Only): Approx. 2870 lbs (1303 kg)
• Idle Speed Range: 575 – 650 RPM
• High Idle Speed: 1962 RPM
• Fuel Consumption (Rated): Approx. 66 L/hr (17.4 gal/hr) at 1800 RPM
• Certifications: IMO NOx (MARPOL 73/78 Annex VI, Reg. 13)
• Cooling System: JWAC (Jacket Water Aftercooled)

Product Advantages:

• Marine Certified: Complies with IMO NOx regulations for reduced emissions.
• Proven Performance: Designed for continuous operation in heavy-duty marine applications.
• Fuel Efficient: Optimized combustion system for lower fuel consumption.
• High Reliability: Built with robust components for extended service life.

Key Features:

• Turbocharged and aftercooled for better thermal efficiency.
• Heavy-duty PT fuel system ensures consistent fuel delivery.
• High torque output at low RPM, improving vessel maneuverability.
• Low idle speed for smooth operation and reduced noise.
• JWAC (Jacket Water Aftercooled) configuration supports stable engine cooling.
• ISO 8665 and SAE J1228 compliant performance ratings.

Applications:

The Cummins NTA855-M 450HP marine generator set is ideal for a wide range of marine propulsion applications, including:

• Cargo ships
• Fishing vessels
• Tugboats
• Patrol boats
• Ferries
• Offshore supply vessels

Its reliable performance in variable load operations and continuous-duty rating makes it a preferred choice for demanding marine environments.