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DCEC QSB3.9-G2 G-Drive Engine

DCEC QSB3.9-G2 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-G2 generator drive engine is 63 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.


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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-G2 G-Drive Engine

Engine Model:QSB3.9-G2
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

General Infomation of DCEC QSB3.9-G2 Generator Drive Engine

Engine ModelQSB3.9-G2Displacement3.9 L
Compression Ratio17.3:1Bore*Storke102 mm * 120 mm
No. of Cylinders4Governor Regulation≤3%
AspirationTurbocharged & Air-Air IntercoolerCPL Code Revision4854

Installation Data of DCEC QSB3.9-G2 Generator Drive Engine

Net weightN/A
Net quality281 kg
Center of Gravity from front face of block304 mm
Center of Gravity above Crankshaft Centerline147 mm
Engine Idle Speed1000±100 RPM
Fire Order1-4-2-3

Engine Performance Data 1500 RPM/50HZ of DCEC QSB3.9-G2 Generator Drive Engine

Standby Power70 kW / 94 HPFriction Horsepower8.46 kW
Prime Power63 kW / 84 HPPiston Speed6.0 m/s
Continuous Power50 kW / 67 HPEngine Water Flow to Engine2.5 l/s
Fuel Consumption230 g/kW.hIntake Air Flow86 l/s
Cons 100%17.4 L/h Exhaust Gas Flow180 l/s
Governed Engine Speed1500 RPMExhaust Gas Temperature460
Engine Idle Speed63 kWRadiated Heat to AmbientN/A
Heat Rejection to Coolant29 kW

System Technical Data of DCEC QSB3.9-G2 Generator Drive Engine

Exhaust SystemMaximum Back Pressure10 mmHg
Maximum allowable static bending moment at exhaust outlet flange4.5 N.m
Exhaust pipe size (recommendatory)80 mm
Air Intake SystemMaximum Intake Air Restriction with Heavy Duty Air Cleaner— Clean Element3.7 kPa
Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Dirty Element6.2 kPa
Maximum Temp. Rise Between Engine Air Intake and Intake Manifold15
Minimum inlet pipe diameter is recommended76 mm
LubricationSystemIdle Speed69 kPa
Maximum Oil Temperature124
Capacity with  Oil Pan : High – LowN/A
Minimum Required Lube System Capacity – Sump plus FiltersN/A
Cooling SystemCoolant Capacity – Engine Only7 L
Minimum Recommended Coolant Temperature70
The Limit Environmental Temperature At Peak Torque104
Minimum Fill Rate ( Without Low Level Alarm)11-19 l/m
Water Tank Capacity Without Water Expansion11%
Maximum Degassing Time25 min
Standard Thermostat (Modulating) Range82 -95
Minimum Pressure Cap70 kPa
Minimum fill rate6%
Electrical SystemSystem voltage24 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 SystemMinimum ambient temperature for unaided cold startN/A

Scopes of Supply of DCEC QSB3.9-G2 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-G2 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-G2 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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Pump Sales - Mrs. Ryen WhatApp-Icon

Spare Parts - Mrs. Nora Chen WhatApp-Icon

Sales Manager - Mrs. Wendy Fu

Ventas españolas - Victoria

Sales Director - Mr. Jasper Lee       WhatApp-Icon

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