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DCEC QSB3.9-G39 G-Drive Engine

DCEC QSB3.9-G39 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-G39 generator drive engine is 100kW.

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.


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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-G39 G-Drive Engine

Engine Model:QSB3.9-G39
Engine Type:4 Cylinders
Displacement:3.9 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
DCEC QSB3.9-G2 Generator Drive Engine Introduction 620×350

Engine Model

Standby Power

Prime Power

Fuel System


QSB3.9-G270 kW @ 1500 RPM63 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
QSB3.9-G388 kW @ 1500 RPM79 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
QSB3.9-G3127 kW @ 1500 RPM33 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
QSB3.9-G3340 kW @ 1500 RPM36 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
 QSB3.9-G3564 kW @ 1500 RPM58 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
QSB3.9-G3792 kW @ 1500 RPM84 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler
QSB3.9-G39110 kW @ 1500 RPM100 kW @ 1500 RPMHigh Pressure Common Rail SystemTurbocharged & Air-Air Intercooler


General Infomation of DCEC QSB3.9-G39 Generator Engine

Engine ModelQSB3.9-G39Engine Configuration NumberD383074GX03
Performance CurveFR97894Performance Control Part5884
Fuel SystemCommon RailAspirationTurbocharged/An empty heart
Cylinder Diameter/Stroke102/120No. of Cylinders4
Compression Ratio17.3:1Emissions3.9 L
Standby Power & Engine Speed147 HP (110 kW) at 1500 RPMContinuous Power & Engine Speed94 HP (70 kW) at 1500 RPM
Normal Power & Engine Speed134 HP (100 kW) at 1500 RPMDry WeightN/A
Wet Weight281 KgMaximum Used Altitude4500 m
Engine Type4 Cylinder,4 Stroke
Performance Data of DCEC QSB3.9-G39 Generator Engine
Prime PowerStandbyPrime PowerStandby
Governed Engine Speed1500 RPM1500 RPMGross Engine Power Output100 kWm110 kWm
torsional Moment637 N.m700 N.mEffective Pressure899 kPa989 kPa
Piston Speed8.15 m/s8.15 m/sFrictional Loss Power8.4 kW8.4 kW
Coolant Rate168 L/min168 L/minFuel Oil Consumption20.3 kg/h22.4 kg/h
Intake Air Flow6.19 m³/min6.61 m³/minExhaust Gas Temperature405 ℃440
Exhaust Gas Flow7.64 kg/min8.17 kg/minAir-Fuel Ratio21.5820.86
Heat Loss Work – Environment16.22 kW17.84 kWHeat Loss Work – Coolant38 kW47 kW
Heat Loss Work – Exhaust86.49 kW95.14 kWHeat Loss Work – Fuel Oil55
Heat Loss Work – Intercooler38 kW47 kWRear Pressure of Supercharger183 kPa204 kPa
Pressurized Air Flow Rate7.3 kg/min7.8 kg/minPost-Pressure Temp. of Supercharger171 183

DCEC QSB3.9-39 Generator Engine

System Technical Data of DCEC QSB3.9-G39 Generator Engine

Exhaust SystemMaximum Exhaust Resistance Allowed By the System10 kPa
the Maximum Static Bending Moment That the Exhaust Flange Can Bear130 N.m
Recommended Minimum Inner Diameter of Exhaust Pipe80 mm
Induction SystemEngine Intake Main Bore102 mm
Minimum Equivalent Inner Diameter of Intercooling System80 mm
Maximum Intake Temperature Rise Between the Environment And the Supercharger Intake Port17 ℃
Maximum Intake Temperature Rise Between the Ambient Temperature of 25℃ And the Intake Manifold25 ℃
the Maximum Intercooled Rear Temperature That Will Not Degrade Engine Performance60 ℃
Intermediate Cooling After Temperature Alarm TemperatureN/A
Intermediate Cooling After Temperature Alarm Temperature Maximum Intake Resistance Net Filter Element3.7 kPa
After Cooling Temperature Alarm Temperature Maximum Intake Resistance Dirty Filter Element6.2 kPa
Maximum Intercooled System Resistance13 kPa
Lubrication SystemMinimum Oil Pressure At Idle207 kPa
Normal Oil Pressure Range for Heat Engines230 kPa-345 kPa
Full Lubrication System Volume10.9 L
Maximum Velocity of Lubrication System7.5 L/min
Cooling SystemEngine Coolant Volume (Engine Only)7.2 L
the thermostat Adjusts the Standard Temperature82 ℃
Full Opening Temperature of thermostat92 ℃
Maximum Coolant Temperature (Engine Outlet)99 ℃
Minimum Coolant Temperature71 ℃
Coolant Alarm Temperature99 ℃
Maximum Allowable Cap Pressure75 kPa
the Minimum Allowable Cap Pressure48 kPa
Maximum Resistance of External Cooling System28 kPa
Maximum Degassing Time25 min
Maximum Degassing Time Minimum Water Adding Rate12 L/min
Maximum Coolant Expansion Volume (Percentage of Cooling System Capacity)12%
Minimum Coolant Expansion Volume (Percentage of Cooling System Capacity)6%
Fuel SystemMaximum Fuel Supply Resistance (Clean Filter, Oem End)13.6 kPa
Maximum Fuel Return Resistance67.7 kPa
Minimum Tank Discharge Capacity0.1 L/s
Maximum Fuel Temperature (At Inlet of Oil Pump)70 ℃
Maximum Fuel Heat DissipationN/A
Maximum Fuel Design Flow Rate40 kg/h
Electric SystemSystem Voltage24 V
Cold Start Current750 CCA
the Battery Capacity130 min
Cold Starting SystemMinimum Cold Starting Temperature Without Auxiliary Starting Device-10 ℃
Minimum Cold Starting Temperature With Intake Preheating (Engine Without Load)-35 ℃

Scopes of Supply of DCEC QSB3.9-G39 Generator Drive Engine

Air Intake System1. Air Intake ManifoldExhuast System1. Exhuast Manifold
2. Standard Air Filter2. Turbocharger
3. Water-Air Intercooler3. Exhuast Elbow
Starting System1. Starter MotorCharging System1. Charging Alternator
2. Starter Rely2. N/A
Lubricating System1. Oil PumpCooling System1. Water Pump
2. Oil Filter2. Engine Fan
3. N/A3. Standard Radiator
Engine Shut-Down System1. Engine Fuel Shut-Off SolenoidPower Output System1. Flywheel
2. N/A2. Standard Flywheel Housing
Fuel System1. Fuel Transfer Pump
2. High-Pressure Fuel Pump
3. Fuel Filter

Optional Accessories of DCEC QSB3.9-G39 Generator Drive Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Shut-Off Valve2. Spark Arrestor Type Muffler & Bellows
3. Heavy-Duty Air Filter3. DPF System
4. Plateau Type Air Filter4. N/A
Fuel System1. Coarse FilterLubricating System1. Oil Pre-Heater
2. Fuel Pre-Heater2. N/A
Starting System1. Manual Magnetic DC ContactorCooling System1. Silent Type Radiator
2. Dual Ears Flywheel Housing2. Plateau Radiator
3. Spring Starter Motor3. Salt-Spray Resistant Radiator
4. Air Starter Motor4. Coolant Pre-Heater
5. Hydraulic Starter Motor5. Jacket Water Heater
6. Manual Magnetic DC Contactor6. N/A


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:

Modifiable components of DCEC QSB3.9-G39 Generator Drive Engine

Air Intake System1. Installation Position of Air FilterCharging System1. 12V Charging Alternator for 12V Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Explosion-Proof Charging Alternator
Exhuast System1. Position of TurbochargerLubricating System1. Oil Pan Position
2. Water-Cooled Exhuast Manifold2. Number of Dipstick
3. Water-Cooled Turbocharger3. Position of Dipstick
Fuel System1. Upgrade to Fuel Fitler that Integrated with Fuel Transfer PumpStarting System1. 12V Starter Motor for 12V Electric System
Engine Shut-Down System1. 12V Solenoid for 12V Electric SystemPower Output System1. Size of Flywheel Housing and Flywheel.
2. Explosion-Proof Solenoid2. Dual-Ear Flywheel Housing (For Twin-Starter System)

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.

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Sales Team

Marine Sales - Mrs. Hailey Tang

Automotive Sales - Mr. Wells Luo

Industrial Sales - Ms.Kitty Chen

Engine Parts-Mr.Nora Chen

Pump Sales - Ryen

Sales Director - Mr. Jasper Lee      

Service Team

Customer Service - Mrs. Wendy Fu

Ventas españolas - Victoria

Contact EMAC Now!

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