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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 79kW.

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-G3 Generator Engine

Engine Model:QSB3.9-G3
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

Aspiration

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
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General Infomation of DCEC QSB3.9-G3 Generator Engine

Engine ModelQSB3.9-G3Engine Configuration NumberD383099GX03
Performance CurveFR95739Performance Control Part4854
Fuel SystemCommon RailAspirationTurbocharged & Air-Air Intercooler
Cylinder Diameter/Stroke102/120No. Of Cylinders4
Compression Ratio17.3:1Emissions3.9 L
Standby Power & Engine Speed118 HP(88 kW) at 1500 RPMContinuous Power & Engine Speed86 HP (64 kW) at 1500 RPM
Normal Power & Engine Speed106 HP(79 kW) at 1500 RPMDry WeightN/A
Wet Weight281 kgMaximum Used Altitude4500 m
Engine Type4 Cylinder,4 StrokeGovernor Regulation≤3%
——END——

Performance Data of DCEC QSB3.9-G3 Generator Engine

Prime PowerStandbyPrime PowerStandby
Governed Engine Speed1500 RPM1500 RPMGross Engine Power Output79 kWm88 kWm
Low Idle Speed900-1000 RPM900-1000 RPMPiston Speed6 m/s6 m/s
Friction Loss Power8.46 kW8.46 kWEngine Coolant Flow Rate2.5 litre/sec2.5 litre/sec
Lnlet Flow83 litre/sec88 litre/secExtraction Flow168 litre/sec183 litre/sec
Exhaust Gas Temperature415 ℃430 ℃Ambient Heat Loss WorkN/AN/A
Heat Loss Work of Coolant30 kW32 kWHeat Loss Work of Intercooler13 kW14 kW
Exhaust Heat Loss WorkN/AN/A

 
Performance Curve DCEC QSB3.9-G3 Generator Engine

System Technical Data of DCEC QSB3.9-G3 Generator Engine

Exhaust SystemMaximum Exhaust Resistance Allowed By The System10 kpa
The Maximum Static Bending Moment That The Exhaust Flange Can Bear4.5 N.m
Recommended Minimum Inner Diameter Of Exhaust Pipe80 mm
INDUCTION SYSTEMExhaust Heat Loss Work Maximum Allowable Intake Resistance – Clean Filter Element3.7 kPa
Exhaust Heat Loss Work Maximum Allowable Intake Resistance – Dirty Filter Element6.2 kPa
The Maximum Temperature Rise Of External Air To The Inlet Of The Supercharger15 ℃
Recommended Minimum Inner Diameter Of Intake Pipe76 mm
Lubrication SystemNormal Operating Oil Pressure Range – Low Idle Minimum Oil Pressure69 kPa
Normal Operating Oil Pressure Range – Minimum Oil Pressure At Rated Point241 kPa
Maximum Pan Oil Temperature124 ℃
Oil Pan (Op 9352 And Op 9855) Timing Oil Capacity: Maximum – Minimum9.46-7.57 litre
Volume Of The Entire Lubrication System10.9 litre
Front Op 9352/ Rear Op 9855 Low Oil Slope – Front Up44°
Front Op 9352/ Rear Op 9855 Low Oil Slope – Rear Up44°
Front Op 9352/ Rear Op 9855 Low Oil Surface Inclination Angle – Edge To Edge44°
Cooling SystemMinimum Engine Operating Coolant Temperature70 ℃
Engine Torque Limit Maximum Coolant Temperature104 ℃
Engine Coolant Volume7  litre
Standard Regulating Temperature Of Thermostat (Range)82-95 ℃
Recommended Refill Rate11-19 L/min
Minimum Coolant Expansion Volume (As A Percentage Of Total Cooling System Volume)6%
Minimum Lower Tank Volume Without Expansion Tank (As A Percentage Of Total Cooling System Volume)11%
Maximum Degassing Time25 min
Minimum Allowable Cap Pressure (Sea Level)70 kPa
Fuel SystemType Of Fuel Pump SystemEC high pressure common rail
Maximum Engine Fuel Inlet Resistance When Using Clean Filter (Relative Value)-16 kPa
Maximum Engine Fuel Inlet Resistance When Using Dirty Filter (Relative Value)-30 kPa
Maximum Fuel Return Resistance (Relative Value)20 kPa
Maximum Fuel Temperature (At Engine Fuel Inlet)80 ℃
Minimum Fuel Design Flow Rate5 L/min
Electric SystemSystem Voltage24 V
The Minimum Cold Start Current Is Recommended When The Temperature Is -18℃ Or Above600 CCA
Maximum Resistance Of Starting Circuit2 mΩ
Minimum Ignition Speed150 RPM
Supercharged Intercooling SystemMaximum Allowable Intake Manifold Temperature And Intake Temperature Difference25 ℃
Maximum Allowable Pressure Difference Before And After Intercooling13 kPa
Maximum Allowable Intake Manifold Temperature (Ambient Temperature 25℃)50 ℃
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Scopes of Supply of DCEC QSB3.9-G3 Generator 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
——END——

Optional Accessories of DCEC QSB3.9-G3 Generator 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
——END——

 

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 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)
——END——
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Sales Team


Generator Engine - Mr. Haden Wu

Marine Engine - Mrs. Hailey Tang

Automotive Engine - Mr. Wells Luo

Industrial Engine - Mrs. Luna Fu

Pump Engine - Miss. Zora Zhou

Engine Parts-Miss. Nora

Sales Director - Mr. Jasper Lee      

Service Team


Technical Service - Mr. Vin Hu

Customer Service - Mrs. Wendy Fu

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