CCEC QSK50-G7 Generator Engines
| Engine Model | QSK50-G7 |
| Standby Power | 2120 HP (1582 kW) at 1500 RPM |
| Prime Power | 1905 HP (1421 kW) at 1500 RPM |
| Compression Ratio | 15.0 : 1 |
| Type | 4 Cycle; 16 Cylinder |
| Fuel System | CMS MCRS |
| Aspiration | Turbocharged & Aftercooled |
| Emission Standard | Euro II |
| Displacement | 50L |
| Bore * Stroke | 159 mm * 159 mm |
| Packing Size (L * W * H) | 2794 mm * 1507 mm * 1846 mm |
General Infomation of CCEC QSK50-G7 Generator Engines
| General Infomation of CCEC QSK50-G7 Generator Drive Engine | |||
| Engine Model | QSK50-G7 | Configuration | D283039GX03 |
| Prime Power | 1905 HP (1421 kW) at 1500 RPM | CPL No. | 3625 |
| Continuous Power | 1680 HP (1253 kW) at 1500 RPM | Compression Ratio | 15.0 : 1 |
| Standby Power | 2120 HP (1582 kW) at 1500 RPM | Fuel System | CMS MCRS |
| Emission Certificatio | U.S. EPA Tier 2, CARB Tier 2 | Displacement | 50.3 L (3,069 in3) |
| Aspiration | Turbocharged and Aftercooled | Type | 6-Cylinder ; Vee ; 4-Cycle |
| Bore x Stroke | 6.26 in. * 6.26 in. / 159 mm * 159 mm | ||
| Installation Data of CCEC QSK50-G7 Generator Drive Engine | |||
| Dry Weight (Approximate) | 11,927 lb. / 5,410 kg | ||
| Wet Weight (Approximate) | 12,593 lb. / 5,712 kg | ||
| Moment of Inertia of Rotating Components -With FW 6066 Flywheel | 112 in·lbf·sec2 / 12.7 kg·m2 | ||
| Center of Gravity from Rear Face of Block | 47.48 in. / 1,206 mm | ||
| Center of Gravity Above Crankshaft Centerline | 10.98 in. / 279 mm | ||
| Maximum Bending Moment at Rear Face of Block | 4,499 lb·ft / 6,100 N.m | ||
Engine Performance Data CCEC QSK50-G7 Generator Engines
| Engine Performance Data 1500 RPM / 50 HZ of CCEC QSK50-G7 Generator Drive Engine | |||||
| Standby Power | Prime Power | Standby Power | Prime Power | ||
| Governed Engine Speed | 1500 RPM | 1500 RPM | Exhaust Gas Flow | 10576 cfm / 4991 L/s | 9671 cfm / 4564 L/s |
| Engine Idle Speed | 700 – 900 RPM | 700 – 900 RPM | Air to Fuel Ratio -air : fuel | 25.5 : 1 | 26.5 : 1 |
| Gross Engine Power Output | 2120 HP / 1581 kW | 1905 HP / 1421 kW | Radiated Heat to Ambient | 8693 BTU/min / 153 kW | 7793 BTU/min / 137 kW |
| Brake Mean Effective Pressure | 365 psi / 2515 kpa | 328 psi / 2260 kpa | Heat Rejection to Jacket Coolant | 32216 BTU/min / 566 kW | 29879 BTU/min / 525 kW |
| Piston Speed | 1875 ft/min / 9.5 m/s | 1562 ft/min / 7.9 m/s | Heat Rejection to Exhaust | 64961 BTU/min / 1142 kW | 57643 BTU/min / 1014 kW |
| Friction Horsepower | 235 HP / 175 kW | 235 HP / 175 kW | Heat Rejected to *Fuel | 475 BTU/min / 8.4 kW | 475 BTU/min / 8.4 kW |
| 4 psi Friction Head | 448 gpm / 1695 L/min | 448 gpm / 1695 L/min | Heat Rejection to Aftercooler Coolant | 21052 BTU/min / 370 kW | 18229 BTU/min / 321 kW |
| Maximum Friction Head | 416 gpm / 1574 L/min | 416 gpm / 1574 L/min | 2 psi Friction Head | 123 gpm / 466 L/min | 123 gpm / 466 L/min |
| Intake Air Flow | 4234 cfm / 1998 L/s | 3944 cfm / 1861 L/s | Maximum Friction Head | 121 gpm / 458 L/min | 121 gpm / 458 L/min |
| Exhaust Gas Temperature – Dry Stack | 928 °F / 498 °C | 893 °F / 478 °C | |||
System Technical Data of CCEC QSK50-G7 Generator Engines
| System Technical Data of CCEC QSK50-G7 Generator Engine | ||
| Exhaust System | Maximum Back Pressure at Standby Power | 2 in.Hg / 6.8 kPa |
| Air Induction System | Maximum Allowable Intake Air Restriction With Dirty Filter Element | 25 in.H2O / 6.2 kPa |
| Maximum Allowable Intake Air Restriction With Normal Duty Air Cleaner and Clean Filter Element | 15 in.H2O / 3.7 kPa | |
| COOLING SYSTEM | Coolant Capacity – Engine Only | 148 quarts / 140.1 litre |
| Minimum Pressure Cap Rating at Sea Level | 14 PSI / 97 kPa | |
| Maximum Static Head of Coolant Above Crankshaft Centerline | 60 ft. / 18.3 m | |
| Maximum Top Tank Temperature (Maximum Top Tank Temp) for Standby Power/Prime Power | 220 /212 °F / 104/100 °C | |
| Thermostat (Modulating) Range | 180 – 200 °F / 82 – 93 °C | |
| Lubrication System | Oil Pressure @ Minimum Idle Speed | 20 PSI / 138 kPa |
| Oil Pressure @ Governed Speed | 50 – 70 PSI / 350 – 485 kPa | |
| Maximum Oil Temperature | 250 °F / 121 °C | |
| Oil Capacity with OP 6100 Oil Pan : Low – High | 46 – 54 U.S. Gal / 174.1 -204.4 liter | |
| Total System Capacity (with Combo Filter) | 62 U.S. gal / 234.7 L | |
| Fuel System | Type Injection System | CMS |
| Maximum Fuel Supply Restriction at Fuel Pump Inlet (clean/dirty filter) | 5 / 9 in Hg / 16.9 / 30 kPa | |
| Maximum Allowable Head on Injector Return Line (Consisting of Friction Head and Static Head) | 10 in Hg / 34 kPa | |
| Maximum Fuel Inlet Temperature | 160 °F / 71 °C | |
| Maximum Supply Fuel Flow – 1500 RPM | 222 US gph / 840 litre/hr | |
| Maximum Return Fuel Flow – 1500 RPM | 116 US gph / 439 litre/hr | |
| ELECTRICAL SYSTEM | System Voltage | 24 volt |
| Minimum Recommended Battery Capacity @ Cold Soak at 50 ℉(10 ℃) and Above | 1800 CCA | |
| Minimum Recommended Battery Capacity @ Cold Soak at 32 ℉-50 ℉(0 ℃-10 ℃) | 1800 CCA | |
| Minimum Recommended Battery Capacity @ Cold Soak at 0 ℉-32 ℉(-18 ℃-0 ℃) | 1800 CCA | |
| Maximum Starting Circuit Resistance | 0.002 Ohm | |
| Cold Start Capability | Unaided Cold Start –Minimum Cranking Speed | 150 RPM |
| Unaided Cold Start –Minimum Ambient Temp for Unaided Cold Start | 7.2 °C / 45 °F | |
CCEC QSK50-G7 Generator Engines Product Advantages
Outstanding Performance
Equipped with the world-leading high-pressure common rail fuel system and fully electronic control modules, the engine achieves exceptional power and transient response through ultra-high fuel injection pressure, optimized vortex and harmonic intake ports, and Cummins’ proprietary high-pressure-ratio efficient turbocharger. It demonstrates enhanced adaptability to altitude, temperature, and load variations.
Features high torque, robust power, rapid transient response, and superior fuel efficiency.
Excellent Durability
The cylinder block and cylinder head are designed with high-strength integration to minimize failure rates, ensuring long-lasting reliability and an outstanding reputation.
The pre-lubrication system, Centriguard centrifugal filter, CENTINEL continuous oil renewal system, and dual-stage Fleetguard combination oil filter extend maintenance intervals while reducing startup failure rates.
High Reliability
Modular integration, compact structure, low failure rates, reduced vibration, and low noise. The engine maintains optimal performance across varying altitudes and load conditions.
Emission Compliance
An optimized combustion chamber design enables the engine to achieve exceptional emission levels without requiring aftertreatment systems. It has been certified under China’s National Stage III Emission Standard for non-road applications.
Convenient Maintenance
The INSITE engine monitoring and diagnostics software, based on the Windows operating system, offers a user-friendly interface and flexibility for rapid fault diagnosis.
A modular design with compact, block-based integration ensures easy disassembly and component reuse. Shared components across the platform enhance parts commonality.
Six-cylinder single-head integrated design with modularized structure ensures compactness. Components are detachable and highly reusable.
