Details
CCEC Cummins NTA855-DM313 Marine Auxiliary Engine
The CCEC Cummins NTA855-DM313 is a heavy-duty, 14-liter 6-cylinder marine generator engine built to sustain high continuous loads. Generating 313 kW (420 HP) of prime power at a fixed 1800 RPM, it is specifically configured to drive 60Hz marine alternators. As an established original CCEC NTA855-DM313 supplier, HekoPower provides this robust platform for shipyards and fleet operators seeking reliable onboard power generation.
Engineered to operate in severe marine environments, this IMO Tier II compliant auxiliary engine utilizes a fully mechanical architecture. It avoids fragile electronics in favor of proven mechanical reliability, ensuring that your vessel maintains auxiliary electrical power regardless of the conditions at sea.
Tech Specs of Cummins NTA855-DM313
General Engine Data
Engine Model: Cummins NTA855-DM313
Type: 6 Cylinders in Line
Displacement: 14 L
Bore * Stroke: 140 * 152
Net Weight (with flywheel & alternator): 1410 Kg
Overall Dimension: 1453mm*947mm*1296mm
Engine Configuration No.: D093641MX02
Key Performance Data
Rated Power/Standby Power: 313 kW/420HP, 347 kW/465HP
Rated Speed: 1800 rpm
Low Idle Speed: 575-650 rpm
Fuel Consumption (Running Speed): ≤ 238 g/kW.hr
Torque/Rated Speed: 1841 N.m @ 1800 rpm
More Technical Data
Certification: CCS/IMO Certificates
Aspiration: Turbocharged/Aftercooled
Compression Radio: 14.0:1
Fuel System: Cummins Pressure Time (PT Pump)
Starting System: Electrical starting motor (12V/24V)
Lowest Starting Temp Without auxiliary system: -12℃
Engine Cooling System: Sea water pump, Heat exchanger, Wet exhaust manifold
Cooling Method: Water cooling
Designed for 60Hz Shipboard Generator Sets
The defining characteristic of the NTA855-DM313 is its precise operating speed. Running at 1800 rpm diesel engine speed makes it strictly a 60Hz power solution. Marine electrical grids operating on 60Hz require an engine tuned to maintain exactly 1800 RPM under varying loads to ensure frequency stability.
This model features exceptional load acceptance. When large electrical motors for winches, pumps, or deck cranes start up, the engine relies on its 14.0:1 compression ratio and 1841 Nm torque to prevent voltage dips. For sudden spikes in demand, the NTA855-DM313 347 kW overload rating provides a 10 percent power reserve for up to one hour in every twelve hours of operation, equivalent to an NTA855-DM313 465 HP overload capacity.
Technical Comparisons: NTA855-DM313 vs Other Models
When selecting a continuous-duty marine generator engine replacement, buyers frequently evaluate the NTA855-DM313 against similar models like the NTA855-DM306 and the NTA855-DM317. The distinction primarily comes down to frequency requirements and exact marine generator sizing.
In the debate of the NTA855-DM313 1800 RPM vs 1500 RPM marine engine configurations, your electrical grid dictates the choice. The DM313 is heavily favored by fleets operating in regions or with equipment standardized on 60Hz power. If your vessel requires a 50Hz electrical supply, you would typically step down to a 1500 RPM variant, which alters both the horsepower output and the fuel consumption curve.
Comparing the NTA855-DM313 vs NTA855-DM306, you will find slight variations in the governor tuning and turbocharger matching to accommodate different alternator sizes. The DM313 represents a sweet spot for medium-sized cargo ships that require a robust 313 kW marine auxiliary generator engine without moving up to the larger and heavier KTA19 series.
Real-World Vessel Applications
Auxiliary power requirements vary drastically depending on the vessel's primary function. The Cummins NTA855-DM313 marine engine excels in continuous marine power applications where downtime translates directly to financial loss.
As an NTA855-DM313 engine for cargo ship applications, it acts as the primary power source for navigation systems, crew quarters, and refrigeration units during long voyages. When acting as an NTA855-DM313 engine for workboat or tugboat operations, it powers heavy hydraulic deck machinery.
Furthermore, this model is frequently installed as a Cummins NTA855-DM313 emergency generator engine. For offshore vessels and large commercial fleets, marine safety regulations mandate a reliable backup power source located above the main deck. The engine’s simple mechanical design allows it to sit on standby for long periods and start up instantly when the main shipboard power fails, making it a trusted NTA855-DM313 marine emergency power solution.
Common Misconceptions About the NTA855-DM313
A frequent misconception in modern marine engineering is that newer, fully electronic engines are always superior. Many buyers hesitate when they see the Mechanical PT fuel system marine engine specification. They incorrectly assume that mechanical injection results in poor fuel economy or excessive emissions.
In reality, the NTA855-DM313 PT fuel pump design is a distinct advantage for commercial marine operators. The marine environment is highly corrosive, and high-humidity salt air notoriously degrades sensitive Electronic Control Modules (ECMs) over time. The PT system uses simple pressure and time principles to meter fuel. It requires no complex electronic diagnostics. If an issue arises mid-ocean, a standard ship mechanic can troubleshoot and repair the fuel system using basic hand tools, which is impossible with common-rail electronic systems.
Another misconception relates to sizing. Buyers sometimes match the 420 HP rating directly to their electrical load without accounting for parasitic losses from the cooling system. Proper NTA855-DM313 generator matching must account for the power drawn by the seawater pump and engine-driven fan, ensuring the actual electrical output meets your auxiliary power requirement.
Maintenance and Replacement Tips
Proper marine engine maintenance extends the lifecycle of the NTA855-DM313 significantly. Due to its turbocharged water-air intercooler (JWAC) configuration, the cooling system demands strict attention. Operators must regularly inspect the NTA855-DM313 seawater pump and heat exchanger for zinc anode wear. Failing to replace these sacrificial anodes will lead to galvanic corrosion inside the cooling jackets.
The NTA855-DM313 wet exhaust manifold is another critical inspection point. It is designed to lower surface temperatures in the engine room, preventing fire hazards. Mechanics should monitor the manifold for proper water flow to avoid localized boiling and scale buildup.
Regarding NTA855-DM313 PT pump maintenance, clean fuel is non-negotiable. While the mechanical system is highly resilient, water or microscopic debris in shipboard fuel tanks will score the precision plungers inside the pump. Utilizing high-efficiency fuel water separators prior to the PT pump will drastically reduce NTA855-DM313 marine engine troubleshooting events.
When repairs are necessary, sourcing genuine NTA855-DM313 replacement parts is vital for safety and performance. The aftermarket is flooded with substandard components that cannot withstand marine continuous duty cycles. As a trusted NTA855-DM313 marine engine supplier in China, HekoPower guarantees that all provided NTA855-DM313 spare parts meet strict CCEC factory specifications.
While the 313 kW model is highly capable, your specific hull design and electrical load calculations may dictate a different output. To accommodate varying onboard electrical loads across different vessels, the broader engine family offers several horsepower and speed configurations. This series mainly includes NT855-DM180, NT855-DM205, NT855-DM230, NT855-DM240, NTA855-DM264, NTA855-DM284, NTA855-DM287, NTA855-DM306, NTA855-DM313,NTA855-DM317. All engines complete with sea water pump, heat exchanger, CCS/IMO certificates.
Frequently Asked Questions (FAQs)
What is the NTA855-DM313 fuel consumption rate?
Fuel efficiency is highly dependent on the electrical load drawn by the vessel. Operating at 1800 RPM under a 100 percent continuous load, the NTA855-DM313 fuel consumption at 1800 RPM is optimized through the mechanical PT fuel system and turbocharged air delivery. For exact fuel curves at 50% and 75% loads, please request the official CCEC performance data sheet from our sales team.
How do I secure an accurate NTA855-DM313 price and lead time?
Because shipyards often require custom configurations—such as specific instrument panels, power take-offs, or specialized cooling arrangements—prices vary. To buy a Cummins NTA855-DM313 engine, contact HekoPower directly. We act as a direct NTA855-DM313 wholesale supplier, allowing us to provide a highly competitive NTA855-DM313 marine engine quotation and accurate factory lead times for global shipping.
Can this engine be used for primary propulsion?
No. The NTA855-DM313 is strictly a generator engine designed for auxiliary power. It is governed to run at a constant speed to produce stable AC electricity. If you require an engine for direct propeller drive, we can supply the corresponding NTA855 propulsion variants which feature variable speed governing and marine gear compatibility.
