DCEC QSB3.9-G3 G-Drive Engine
DCEC QSB3.9-G3 generator drive engine is a 4-cylinders in line,3.9 liter four-strokes engine with 102mm bore and 120mm stroke. Equipped with Electrically Control High-pressure Common Rail, comes with turbocharger and Air-Air intercooler.
The prime power for 50HZ generator set (1500RPM) of DCEC QSB3.9-G3 generator drive engine is 79 kW.
As part of EMAC, SinoGen also provide complete power supply solutions that powered by DCEC, our ranges of products including open type generator set, silence type generator set, super silence type generator set, mobile trailer, complete power truck and complete power car for railways applications. We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.
1. Advanced design and high-quality manufacturing. Adapt to harsh working environment, high strength, reliable work under heavy load.
2. The integrated design of cylinder block and cylinder head prevents water and oil leakage from the engine. About 40% less than the same type of engine, the failure rate is greatly reduced.
3.Forged steel camshafts and crankshafts, high-strength cylinders, cast on multiple cylinders, high rigidity, high pressure resistance, good reliability, and long service life.
4. The platform hones the cross hatch cylinder hole, and the perfect geometric structure can effectively prevent oil leakage. Advanced technology such as new piston ring assembly and gasket crimp shield to reduce oil loss.
5. Cylinder block and cylinder head adopt integrated design, which eliminates the occurrence of engine water and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.
6. The three-stage fuel filter ensures a balanced level of particle dispersion, protects the main components of the fuel system, and maximizes the life of the engine.
Technical Specifications
Basic Introduction of DCEC QSB3.9-G3 G-Drive Engine
Engine Model: | QSB3.9-G3 |
Engine Type: | 6 Cylinders |
Displacement: | 5.9 L |
Rated Speed: | 1500 RPM |
Aspiration Method: | Turbocharged & Air-Air Intercooler |
Emission Standard: | N/A |
Bore*Storke: | 102 mm * 120 mm |
Packing Size(L*W*H): | N/A |
Wet Weight: | 281 kg |
Lead Time: | 15-30 Working Days |
Payment Terms: | T/T ,L/C |

General Infomation of DCEC QSB3.9-G3 Generator Drive Engine | |||
Engine Model | QSB3.9-G3 | Displacement | 5.9 L |
Compression Ratio | 17.3:1 | Bore * Storke | 102 mm * 120 mm |
No. of Cylinders | 6 | Governor Regulation | ≤3% |
Aspiration | Turbocharged & Air-Air Intercooler | CPL Code Revision | 4813 |
Installation Data of DCEC QSB3.9-G3 Generator Drive Engine | |||
Net weight | N/A | ||
Net quality | 281 kg | ||
Center of Gravity from front face of block | 304 mm | ||
Center of Gravity above Crankshaft Centerline | 147 mm | ||
Engine Idle Speed | 1000 ± 100 RPM | ||
Fire Order | 1-4-2-3 | ||
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Engine Performance Data 1500 RPM/50HZ of DCEC QSB3.9-G3 Generator Drive Engine | |||
Standby Power | 88 kW /118 HP | Friction Horsepower | 8.46 kW |
Prime Power | 79 kW / 106 HP | Piston Speed | 6.0 m/s |
Continuous Power | 64 kW / 86 HP | Engine Water Flow to Engine | 2.5 l/s |
Fuel Consumption | 214 g/kW.h | Intake Air Flow | 83 l/s |
Cons 100% | 20.2 L/h | Exhaust Gas Flow | 168 l/s |
Governed Engine Speed | 1500 RPM | Exhaust Gas Temperature | 415 ℃ |
Engine Idle Speed | 79 kW | Radiated Heat to Ambient | N/A |
Heat Rejection to Coolant | 30 kW | ||
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System Technical Data of DCEC QSB5.9-G3 Generator Drive Engine | ||
Exhaust System | Maximum Back Pressure | 10 mmHg |
Maximum allowable static bending moment at exhaust outlet flange | 12 N.m | |
Exhaust pipe size (recommendatory) | 76 mm | |
Air Intake System | Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Clean Element | 3.7 kPa |
Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Dirty Element | 6.2 kPa | |
Maximum Temp. Rise Between Engine Air Intake and Intake Manifold | 17 ℃ | |
Minimum inlet pipe diameter is recommended | 101.6 mm | |
LubricationSystem | Idle Speed | 69 kPa |
Maximum Oil Temperature | 124 ℃ | |
Capacity with Oil Pan : High – Low | 14.2 L-12.3 L | |
Minimum Required Lube System Capacity – Sump plus Filters | 16.4 L | |
Cooling System | Coolant Capacity – Engine Only | 9 L |
Minimum Recommended Coolant Temperature | 70 ℃ | |
The Limit Environmental Temperature At Peak Torque | 104 ℃ | |
Minimum Fill Rate ( Without Low Level Alarm) | 19 l/m | |
Water Tank Capacity Without Water Expansion | 11% | |
Maximum Degassing Time | 25 min | |
Standard Thermostat (Modulating) Range | 82 ℃-95 ℃ | |
Minimum Pressure Cap | 90 kPa | |
Minimum fill rate | 6% | |
Electrical System | System voltage | 24 V |
Minimum battery capacity-cold soak at -18 C (0 F) or above | ||
Engine only reserve capacity: | N/A | |
Engine only cold cranking amperes: | 600 CCA | |
Cool Start System | Minimum ambient temperature for unaided cold start | ﹣12 ℃ |
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Scopes of Supply of DCEC QSB3.9-G3 Generator Drive Engine | |||
Air Intake System | 1. Air Intake Manifold | Exhuast System | 1. Exhuast Manifold |
2. Standard Air Filter | 2. Turbocharger | ||
3. Water-Air Intercooler | 3. Exhuast Elbow | ||
Starting System | 1. Starter Motor | Charging System | 1. Charging Alternator |
2. Starter Rely | 2. N/A | ||
Lubricating System | 1. Oil Pump | Cooling System | 1. Water Pump |
2. Oil Filter | 2. Engine Fan | ||
3. N/A | 3. Standard Radiator | ||
Engine Shut-Down System | 1. Engine Fuel Shut-Off Solenoid | Power Output System | 1. Flywheel |
2. N/A | 2. Standard Flywheel Housing | ||
Fuel System | 1. Fuel Transfer Pump | ||
2. High-Pressure Fuel Pump | |||
3. Fuel Filter | |||
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Optional Accessories of DCEC QSB3.9-G3 Generator Drive Engine | |||
Air Intake System | 1. Air Intake Pre-Heater | Exhuast System | 1. Muffler & Bellows |
2. Air Intake Shut-Off Valve | 2. Spark Arrestor Type Muffler & Bellows | ||
3. Heavy-Duty Air Filter | 3. DPF System | ||
4. Plateau Type Air Filter | 4. N/A | ||
Fuel System | 1. Coarse Filter | Lubricating System | 1. Oil Pre-Heater |
2. Fuel Pre-Heater | 2. N/A | ||
Starting System | 1. Manual Magnetic DC Contactor | Cooling System | 1. Silent Type Radiator |
2. Dual Ears Flywheel Housing | 2. Plateau Radiator | ||
3. Spring Starter Motor | 3. Salt-Spray Resistant Radiator | ||
4. Air Starter Motor | 4. Coolant Pre-Heater | ||
5. Hydraulic Starter Motor | 5. Jacket Water Heater | ||
6. Manual Magnetic DC Contactor | 6. N/A | ||
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As part of EMAC, SinoGen focusing on generator set related business, from Generator drive engine power pack to complete generator set, from generator control panel to synchronizing cabinet, from super silent type generator set to mobile power trailer, SinoGen provides professional one-stop solution for everything customer needed for generator set. For more information of our complete generator set products, you are welcome to visit SinoGen homepage: www.sino-gen.com
Modifiable components of DCEC QSB3.9-G3 Generator Drive Engine | |||
Air Intake System | 1. Installation Position of Air Filter | Charging System | 1. 12V Charging Alternator for 12V Electric System |
2. Upgrade to Heavy-Duty Type Air Fitler | 2. Explosion-Proof Charging Alternator | ||
Exhuast System | 1. Position of Turbocharger | Lubricating System | 1. Oil Pan Position |
2. Water-Cooled Exhuast Manifold | 2. Number of Dipstick | ||
3. Water-Cooled Turbocharger | 3. Position of Dipstick | ||
Fuel System | 1. Upgrade to Fuel Fitler that Integrated with Fuel Transfer Pump | Starting System | 1. 12V Starter Motor for 12V Electric System |
Engine Shut-Down System | 1. 12V Solenoid for 12V Electric System | Power Output System | 1. Size of Flywheel Housing and Flywheel. |
2. Explosion-Proof Solenoid | 2. Dual-Ear Flywheel Housing (For Twin-Starter System) | ||
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Note: All Above Data are Just for Referenece, All Data Might Change Without Notices or Update, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

Engine Sale Manual

Installation Drawing

Installation Manual

Operation Manual

Parts Catalogue
