NTA855-G7 Generator Engines
| Engine Model | NTA855-G7 |
| Standby Power | 505 HP (377 kW) at 1500 RPM |
| Prime Power | 460 HP (343 kW) at 1500 RPM |
| Compression Ratio | 15.0 : 1 |
| Type | 4 Cycle; 6 Cylinder |
| Fuel System | PT-STC |
| Aspiration | Turbocharged & Aftercooled |
| Emission Standard | Euro II |
| Displacement | 10.8 L |
| Bore * Stroke | 140 mm * 152 mm |
| Packing Size (L * W * H) | 3200 mm * 980 mm * 1760 mm |
General Infomation of CCEC NTA855-G7 Generator Engines
| General Infomation of CCEC NTAA855-G7 Generator Engine | |||
| Engine Model | NTAA855-G7 | Configuration | D093629DX02 |
| Performance Curve | C – 164E | CPL No. | CQ122 |
| Type | 4 – Cycle; In – line; 6 – Cylinder | Aspiration | Turbocharged & Air – Air Intercooler |
| Stroke * Bore | 140 mm * 152 mm / 5.5 in * 6 in | Displacement | 855 in3 / 14 L |
| Compression Ratio | 14.0 : 1 | Firing Order | 1 – 5 – 3 – 6 – 2 – 4 |
| Idle Speed | 575 – 650 RPM | Prime Power | 460 HP (343 kW) at 1500 RPM |
| Standby Power | 505 HP (377 kW) at 1500 RPM | ||
| Installation Data of CCEC NTAA855-G7 Generator Engine | |||
| Maximum over Speed Capability | 2700 RPM | Maximum No – Load Governed Speed | 1800 RPM |
| Minimum Torque for unaided Cold Start | 375 lb.ft./ 509 N.m | Minimum Crankshaft Rotation for unaided Cold Start | 150 RPM |
| Exhaust Sound Pressure at 1m from Exhaust Outlet | N / A | Dry Weight – Engine Only | 2800 lb / 1270 kg |
| Wet Weight – Engine Only | 2910 lb / 1320 kg | Dry Weight – Heat Exchanger Cooled Engine | N / A |
| Wet Weight – Heat Exchanger Cooled Engine | N / A | Maximum Bending Moment at Rear Face of Block | 1000 lb.ft / 1356 N.m |
| Moment of Inertia of Rotating Components – with FW 1109 Flywheel | 118.5 lbm.ft2 / 4.99 kg.m2 | Center of Gravity Above Crankshaft Centerline | 5.5 in / 140 mm |
| Center of Gravity from Rear Face of Flywheel Housing | 27.7 in / 704 mm | ||
Engine Performance Data CCEC NTA855-G7 Generator Engines
| Performance Data of CCEC NTAA855-G7 Generator Engine | |||||
| Prime Power | Standby Power | Prime Power | Standby Power | ||
| Governed Engine Speed | 1500 RPM | 1500 RPM | Gross Engine Power Output | 460 HP / 343 kW | 505 HP / 377 kW |
| Torque | 1611 lb.ft / 2184 N·m | 1770 lb.ft / 2400 N·m | Brake Mean Effective Pressure | 284 PSI / 1960 kPa | 312 PSI / 2154 kPa |
| Piston Speed | 1500 ft/min / 7.62 m/s | 1500 ft/min / 7.62 m/s | Friction Horsepower | 30 HP / 22 kW | 30 HP / 22 kW |
| Intake Air Flow | 1081 cfm / 510 liter/s | 1028 cfm / 485 liter/s | Engine Water Flow | 79 GPM / 5 L/min | 79 GPM / 5 L/min |
| Raw Water Flow | 54 GPM / 3.4 L/s | 54 GPM / 3.4 L/s | Fuel Consumption | 22.6 U.S.gal/h / 86 L/h | 24.8 U.S.gal/h / 94 L/h |
| Oil Flow | 35 GPM / 2.2 L/s | 35 GPM / 2.2 L/s | Exhaust Gas Temperature (After Turbine) | 843 °F / 451 °C | 926 °F / 497 °C |
| Exhaust Gas Flow (After Turbine) | 2432 cfm / 1150 liter/s | 2313 cfm / 1090 liter/s | Air to Fuel Ratio | 28.3 : 1 | 24.5 : 1 |
| Heat Radiation | 2440 BTU / 43 kW | 2680 BTU / 47 kW | Heat Rejection to Coolant | 14640 BTU / 257 kW | 16090 BTU / 283 kW |
| Heat Rejection to Ambient | 12200 BTU / 214 kW | 13410 BTU / 236 kW | |||
System Technical Data of CCEC NTA855-G7 Generator Engines
| System Technical Data of CCEC NTAA855-G7 Generator Engine | ||
| Exhaust System | Maximum Allowable Back Pressure | 3 in Hg / 10 kPa |
| Standard Exhaust Pipe Diameter | 5 in. / 127 mm | |
| Air Induction System | Maximum Allowable Intake Air Restriction – With Clean Filter Element | 15 in H2O / 3.74 kPa |
| Maximum Allowable Intake Air Restriction – With Dirty Filter Element | 25 in H2O / 6.22 kPa | |
| Maximum Intake Pressure Fall from Turbo to Intake Manifold | 5 PSI / 17 kPa | |
| Maximum Intake Manifold Temperature Rise | 43 °F / 24 °C | |
| Minimum Dirt Holding Capacity | 25 gm/CFM / 53 gm.L/s | |
| Maximum Allowable Intake Air Temperature | 30 °F / 17 °C | |
| Cooling System | Coolant Capacity – Engine Only | 5.5 US gal / 20.8 liter |
| Coolant Capacity – With Radiator | 16 US gal / 60.6 liter | |
| Maximum Coolant Friction Head External to Engine | 6 PSI / 41 kPa | |
| Maximum Static Head of Coolant (exclusive of Pressure Cap) | 15 PSI / 103 kPa | |
| Maximum Static Head of Coolant Above Engine Crank Centerline | 46 ft. / 14 m | |
| Standard Thermostat (modulating) Range | 180 – 202 °F / 82 – 94 °C | |
| Minimum Allowable Pressure Cap | 7.0 PSI / 48.2 kPa | |
| Maximum Coolant Temperature | 205 °F / 96 °C | |
| Maximum Top Tank Temperature | 212 °F / 100 °C | |
| Minimum Top Tank Temperature | 160 °F / 71 °C | |
| Maximum Allowable Top Tank Temperature for Standby / Prime Power | 220 / 212 °F / 104 / 100 °C | |
| Minimum Recommended Top Tank Temperature | 160 °F / 71 °C | |
| Minimum Coolant Expansion Space | 5 % | |
| Lubrication System | Oil Pressure @ Idle Speed | 15 Min PSI / 103 Min kPa |
| Oil Pressure @ Governed Speed | 35 – 50 PSI / 241 – 345 kPa | |
| Maximum Allowable Oil Temperature | 250 °F / 121 °C | |
| Maximum Oil Consumption | 0.25 U.S.qt./h / 0.24 L/h | |
| Oil Pan Capacity – Low / High | 7.5 / 9.5 US gal / 28.4 / 36.0 liter | |
| Total System Capacity | 10.2 US gal / 38.6 liter | |
| Angularity of Oil Pan – Front Down / Front Up / Side to Side | 38 ° / 38 ° / 38 ° | |
| Fuel System | Type Injection System | Direct Injection PT |
| Maximum Allowable Restriction to Fuel Pump – With Clean Fuel Filter | 4 in Hg / 13.5 kPa | |
| Maximum Allowable Restriction to Fuel Pump – With Dirty Fuel Filter | 8 in Hg / 27.1 kPa | |
| Maximum Allowable Injector Return Line Restriction – With Check Valves | 6.5 in Hg / 22 kPa | |
| Maximum Allowable Injector Return Line Restriction – Without Less Check Valves | 2.5 in Hg / 8.5 kPa | |
| Minimum Fuel Supply Line Size | 0.625 in. / 16 mm | |
| Minimum Fuel Return Line Size | 0.5 in. / 13 mm | |
| Maximum Fuel Pump Supply | 98 U.S.gal/h / 371 liter | |
| Fuel Rail Pressure | 149 PSI / 1028 kPa | |
| Maximum Fuel Temperature | 160 °F / 71 °C | |
| Electrical System | Minimum Recommended Battery Capacity ( 24 V ) – Cold Soak (No Load) | 900 CCA |
| Minimum Recommended Battery Capacity ( 24 V ) – Cold Soak (No Load) – Minimum Reserved Capacity | 320 CCA | |
| Minimum Recommended Battery Capacity ( 24 V ) – Cold Soak (With Load) | 900 CCA | |
| Minimum Recommended Battery Capacity ( 24 V ) – Cold Soak (With Load) – Minimum Reserved Capacity | 320 CCA | |
| Maximum Allowable Resistance of Cranking Circuit | 0.002 ohm | |
| Standard Cranking Motor (Heavy Duty , Positive Engagement) | 24 volt | |
| Standard Battery Charging System , Negative Ground | 35 ampere | |
NTA855-G7 Generator Engines Product Advantages
Durable and Rugged
The cylinder block and cylinder head feature high-strength integrated design, reducing failure rates and ensuring long-lasting durability. Renowned for exceptional reputation.
High Reliability
Equipped with Cummins’ advanced PT fuel system, offering unique overspeed protection and low-pressure fuel supply. Minimal piping reduces failure rates. Derived from superior overall design, delivering outstanding reliability.
Superior Performance
- High-efficiency Cummins exhaust turbocharger ensures optimal air intake, enhancing engine efficiency.
- Pressure pulse exhaust manifold fully utilizes exhaust energy, further improving combustion and increasing low-load efficiency while reducing specific fuel consumption.
- High torque output, powerful performance, fast transient response, and exceptional torque reserve.
Easy Maintenance
Six-cylinder single-head integrated design with modularized structure ensures compactness. Components are detachable and highly reusable.
