CCEC NT855 – M450 Marine Engine
| Engine Model | NT855 – M450 |
| Advertised Power | 336 kW (450 HP) @ 1800 RPM |
| Compression Ratio | 15.0 : 1 |
| Type | 4 Cycle; 6 Cylinder |
| Fuel System | 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 – M450 Marine Engine
| General Infomation of CCEC NTA855 – M450 Marine Main Engine | |||
| Engine Model | NTA855 – M450 | Configuration | D093348MX02 |
| Curve No. | M – 194 | CPL Code | 0990 |
| Displacement | 855 in3 / 14 L | Bore * Stroke | 140 mm * 152 mm / 5.50 in * 6.00 in |
| Fuel System | PT | Cylinders | 6, in Line |
| Advertised Power | 336 kW (450 HP) @ 1800 RPM | Aspiration | Turbocharged & Water-Air Intercooler |
| Rating Type | Heavy Duty | Peak Engine Torque @ RPM | N / A |
| Brake Mean Effective Pressure | 232 PSI / 1600 kPa | Minimum Idle Speed Setting | 575 – 650 RPM |
| Normal Idle Speed Variation | ± 25 RPM | High Idle Speed Range Minimum | 1962 RPM |
| High Idle Speed Range Maximum | 2106 RPM | Compression Ratio | 14.5 : 1 |
| Piston Speed | 1791 ft/min / 9.1 m/sec | Weight (Dry) – Engine Only – Average | 2870 lb. / 1303 kg |
| Weight (Dry) – Engine With Heat Exchanger System – Average | 3150 lb. / 1430 kg | Installation Diagram No | 4061314 |
Scopes of Supply CCEC NT855 – M450 Marine Engine
| Scopes of Supply of CCEC NTA855 – M450 Marine Main 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 – M450 Marine Engine
| System Technical Data of CCEC NTA855 – M450 Marine Main Engine | ||
| Fuel System | Fuel Consumption at Rated Speed | 22 GAL/hr / 83 L/hr |
| Approximate Fuel Flow to Pump | 66 GAL/hr / 249 L/hr | |
| Maximum Allowable Fuel Supply to Pump Temperature | 160 °F / 71 °C | |
| Approximate Fuel Flow Return to Tank Temperature | N / A | |
| Maximum Heat Rejection to Drain Fuel | N / A | |
| Fuel Pressure – Pump Out / Rail Mechanical Gauge | 163 PSI / 1123 kPa | |
| Air System | Intake Manifold Pressure | 58 in. Hg / 196 kPa |
| Intake Air Flow | 932 CFM / 440 L/sec | |
| Heat Rejection to Ambient | 2391 BTU/min / 42 kW | |
| Exhaust System | Exhaust Gas Flow | 2097 CFM / 990 L/sec |
| Exhaust Gas Temperature (Turbine Out) | 790 °F / 421 °C | |
| Heat Rejection to Exhaust (Manifold) | 1060 °F / 571 °C | |
| Cooling System | Sea Water Pump Specifications | MAB 0.08.17 – 07 / 16 / 2001 |
| Pressure Cap Rating (With Heat Exchanger Option) | 7 PSI / 50 kPa | |
| Engines without Low Temperature Aftercooler (LTA) Jacket Water Aftercooled Engine (JWAC) | ||
| Coolant Flow to Engine Heat Exchanger | 70 GAL/min / 264 L/min | |
| Standard Thermostat Operating Range (Start to Open) | 180 °F / 82 °C | |
| Standard Thermostat Operating Range (Full Open) | 201 °F / 94 °C | |
| Heat Rejection to Engine Coolant3 | 14344 BTU/min / 252 kW | |
CCEC NT855 – M450 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.
