Cummins NTA855 Features
■ Crankshaft and Rod
Robust and fully balanced crankshaft design for a more steady rotation and higher strength. Steel piston crown with oil gallery and aluminum skirts for better durability and low oil consumption.
■ Fuel System
Cummins’ unique PT with a fixture and step timing control for precise fuel injection makes the fuel injection pressure above 120 MPa, which leads to an excellent fuel consumption rate and emission performance. check valve in fuel tube improves reliability.
■ Lubrication System
Dual spin-on filter can separate impurity above 10um effectively. Low pressure(220-310Kpa) and steady temperature(100-120°C)system can reduce auxiliary power wasting of the lubricating oil pump.
■ Cooling System
Great flux water pump and special channel design provide effective cooling. Spin in water filter makes the coolant clean and keeps it in normal acidity.
■ Exhaust System (After-cooled)
Advanced Holset turbocharger and water-air after cooler technology, pulse exhaust manifold reduce exhaust temperature, provide excellence fuel consumption and emission performance.
Technical Specification
| Engine Model | NTA855-C | Fuel Consumption at Rated Speed | 19gal/hr / 72 l/hr |
| Rating Type | Continuous | Approximate Fuel Flow to Pump | 57gal/hr / 216 l/hr |
| Rated Engine Power | 200-400hp | Intake Manifold Pressure | 57in. Hg / 194kPa |
| Rated Engine Speed | 1500rpm/1800rpm/2100rpm | Intake Air Flow | 3597 cfm / 1698 l/sce |
| Peak Engine Torque@ 1500 rpm | 1021 lb. H ft. / 1385 NHm | Heat Rejection to Ambient | 4464 BTU/min / 78 kW |
| Cylinders | 6 | Size-Engine Only | 1900*1150*1900mm |
| Aspiration | Turbocharged & Aftercooled | Weight (Dry) – Engine Only | 1400kg |
| Compression Ratio | 14.0:1 | Minimum Idle Speed Setting | 575-650rpm |
| Piston Speed | 1791 ft/min / 9.1 m/sec | Normal Idle Speed Variation | ±25rpm |
| Displacement | 14L | High Idle Speed Range Minimum | 1962rpm |
| Bore*Stroke | 140*152mm | High Idle Speed Range Maximum | 2106rpm |
| Fuel System | PT pump | Standard Thermostat Operating Range (Start to Open – Full Open) | 82°C-94°C |
