CCEC NT855–DM317 Marine Engine
| Engine Model | NT855–DM317 |
| Advertised Power | 317 kW (425 HP) @ 1500 RPM |
| Compression Ratio | 15.0 : 1 |
| Type | 4 Cycle; 6 Cylinder |
| Fuel System | Direct Injection CMI PT |
| Aspiration | Turbocharged & Aftercooled |
| Emission Standard | Euro II |
| Displacement | 14L |
| Bore * Stroke | 140 mm * 152 mm |
| Packing Size (L * W * H) | 1534 mm * 781 mm * 1355 mm |
General Infomation of CCEC NT855–DM317 Marine Engine
| General Infomation of CCEC N855-DM317 Marine Auxiliary Engine | |||||
| Engine Model | N855-DM317 | Configuration | D093641MX02 | ||
| Curve No. | FR900 | CPL Code | CQ168 | ||
| Displacement | 855 in3 / 14 L | Bore * Stroke | 140 mm * 152 mm / 5.50 in * 6.00 in | ||
| Fuel System | Direct Injection CMI PT | Cylinders | 6, in Line | ||
| Prime Power | 317 kW (425 HP) @ 1500 RPM | Aspiration | Turbocharged / LTA | ||
| Rating Type | Prime Power | Overload | Rating Type | Prime Power | Overload |
| Rated Engine Power | 425 HP / 317 kW | 470 HP / 351 kW | Rated HP Production Tolerance | ± 3 % | N / A |
| Rated Engine Torque | 1488 lb.ft / 2017 N.m | 1646 lb.ft / 2232 N.m | Governed Engine Speed | 1500 RPM | |
| Brake Mean Effective Pressure | 262 PSI / 1806 kPa | 290 PSI / 1999 kPa | Idle Speed Range | 575 – 650 RPM | N / A |
| Piston Speed | 1500 ft/min / 7.6 m/sec | N / A | Compression Ratio | 14.5 : 1 | N / A |
| Friction Power | 29 HP / 22 kW | N / A | Firing Order | 1 – 5 – 3 – 6 – 2 – 4 | N / A |
| Steady State Stability Band at Constant Load | 0.25 % | N / A | Weight Dry – Engine Only | 1314 kg / 2896 lb | N / A |
| Weight Dry – Engine With Heat Exchanger | 1431 kg / 3155 lb | N / A | |||
Scopes of Supply CCEC NT855–DM317 Marine Engine
| Scopes of Supply of CCEC N855-DM317 Marine Auxiliary Engine | |||
| Exhaust System | 1. Silencer | Lubricating System | 1. Oil Pump |
| 2. Bellows | 2. Oil Filter | ||
| Fuel System | 1. Fuel Pump | Starting System | 1. Starter Motor |
| 2. Oil Cut Solenoid Valve | 2. Fywheel Housing | ||
| 3. Fuel Filter | 3. Flywheel | ||
| Charging System | 1. Alternator | Control System | 1.Stadnby Control Panel |
| Cooling System | 1. Seawater Pump | ||
| 2. Heat Exchanger | |||
System Technical Data of CCEC NT855–DM317 Marine Engine
| System Technical Data of CCEC N855-DM317 Marine Auxiliary Engine | |||
| Fuel System | Prime Power | Overload | |
| Approximate Fuel Flow to Pump | 89 GAL/hr / 337 L/hr | 89 GAL/hr / 337 L/hr | |
| Maximum Allowable Fuel Supply to Pump Temperature | 160 °F / 71 °C | 160 °F / 71 °C | |
| Approximate Fuel Flow Return to Tank | 69 GAL/hr / 261 L/hr | 67 GAL/hr / 254 L/hr | |
| Fuel Rail Pressure | 136.1 PSI / 938 kPa | 161 PSI / 1110 kPa | |
| Average Fuel Consumption- Emissions ISO 8178 D2 Test Cycle | 10.4 GAL/hr / 39.5 L/hr | N / A | |
| Air System | Prime Power | Overload | |
| Intake Manifold Pressure | 46 in. Hg / 1168 mm. Hg | 52 in. Hg / 1321 mm. Hg | |
| Intake Air Flow | 705 CFM / 333 L/sec | 756 CFM / 357 L/sec | |
| Heat Rejection to Ambient | 1935 BTU/min / 34 kW | 2220 BTU/min / 39 kW | |
| Exhaust System | Prime Power | Overload | |
| Exhaust Gas Flow | 2097 CFM / 990 L/sec | 2372 CFM / 1119 L/sec | |
| Exhaust Gas Temperature (Turbine Out) | 824 °F / 440 °C | 844 °F / 451 °C | |
| Exhaust Gas Temperature (Manifold) | 991 °F / 533 °C | 1009 °F / 543 °C | |
| Heat Rejection to Exhaust | 9790 BTU/min / 172 kW | 11099 BTU/min / 195 kW | |
| Emissions (in accordance with ISO 8178 Cycle D2) | |||
| NOx (Oxides of Nitrogen) | 6.97 g/kWhr / 5.2 g/bhphr | N / A | |
| Cooling System | Prime Power | Overload | |
| Sea Water Pump Specifications | MAB 0.08.17 – 07 / 16 / 2001 | N / A | |
| Pressure Cap Rating (With Heat Exchanger Option) | 7 PSI / 48 kPa | N / A | |
| Main Engine Circuit | |||
| Coolant Flow to Engine Heat Exchanger (with open thermostat) | 83.2 GAL/min / 315 L/min | N / A | |
| Standard Thermostat Operating Range (Start to Open) | 180 °F / 82 °C | N / A | |
| Standard Thermostat Operating Range (Full Open) | 202 °F / 95 °C | N / A | |
| Heat Rejection to Engine Coolant3 | N / A | N / A | |
| Aftercooler (LTA) Circuit | |||
| Coolant Flow to LTA Cooler (with open thermostat) | 15.1 GAL/min / 57 L/min | N / A | |
| Standard Thermostat Operating Range (Start to Open) | 135 °F / 57 °C | N / A | |
| Standard Thermostat Operating Range (Full Open) | 156 °F / 69 °C | N / A | |
| Heat Rejection to Engine Coolant3 | N / A | N / A | |
| Maximum Coolant Inlet Temperature from LTA Cooler | 145 °F / 63 °C | N / A | |
CCEC NT855–DM317 Marine Engine Product Advantages
Excellent Durability
The cylinder block and head adopt high-strength integrated design, reducing failure rates. Durable and has earned an excellent reputation.
Outstanding Performance
Equipped with an advanced PT fuel system and ultra-high injection pressure, it features unique advantages such as overspeed protection, low-pressure fuel supply, fewer pipelines, and low failure rates. This ensures optimal fuel atomization and efficient combustion, delivering high energy-saving performance. The STC oil timing control valve precisely adjusts timing, improving combustion and reducing smoke emissions during low-idle conditions.
Exhaust System
Chongqing Cummins marine engines are designed with a rational exhaust system. The wet turbocharger and water-cooled exhaust pipes effectively reduce surface temperatures, complying with SOLAS safety regulations.
Easy Maintenance
Modular design with compact and integrated components. Parts are detachable with high reusability. Shared platform design ensures high parts commonality.
Emission Compliance
Compliant with IMO Tier II emission standards. Features a marine-optimized turbocharger and intercooler from Chongqing Cummins, paired with low-temperature intercooling technology. This enhances operational efficiency, reduces fuel consumption and emissions, and improves engine reliability.
Classification Society Certifications
Certified by multiple international classification societies, including CCS and BV.
