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QSB6.7-G31 G-Drive Engine

DCEC QSB6.7-G31 generator drive engine is a 6-cylinders in line,6.7 liter four-strokes engine with 107mm bore and 124mm stroke.

Equipped with BOSCH Electrically Control High-pressure Common Rail, comes with turbocharger and Air-Air intercooler.

The prime power for 50HZ generator set (1500RPM) of DCEC QSB6.7-G31 generator drive engine is 209kW.

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.

Advantages of DCEC QSB6.7-G31 G-Drive Engine

  • Advanced design and sophisticated manufacturing to adapt to various harsh working conditions! High-strength parts, strong ability to work under heavy loads.

  • Cylinder block and cylinder head adopt integrated design. The occurrence of engine water leakage and oil leakage is prevented, and the parts are about 40% less than other similar engines. The failure rate is greatly reduced.

  • Using forged steel camshaft and crankshaft, high-strength cylinder block design, multiple parts cast on the cylinder block, high rigidity, high pressure resistance, good reliability, and longer service life.

  • The cylinder bore adopts a platform mesh honing design. The perfect geometric structure effectively prevents oil leakage, and the use of advanced technology such as new piston ring components and gasket crimping and molding reduces oil loss.

  • The five key systems of the electronically controlled engine are all developed by DCEC, and have been applied and verified in different fields around the world to ensure the excellent economy and reliability of the product.

  • By optimizing the control strategy and combining with the actual operating conditions of the equipment, the fuel economy can be further improved.

Technical Specifications

Engine Model:QSB6.7-G31
Engine Type: 6 Cylinder
Displacement:6.7 L
Rated Speed:1500 RPM
Rated Power / Speed:209 kW @ 1500 RPM
Fuel System:Electronically Controlled High Pressure Common Rail Injection System
Cooling System:136 kw
Aspiration Method:Turbocharged
Emission Standard:N/A
Bore*Storke:107 * 124 mm
Packing Size(L*W*H):N/A
Wet Weight:552 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Engine Model

Standby Power

Prime Power

Fuel System


QSB6.7-G3166 kW @ 1500 RPM151 kW @ 1500 RPMBOSCH Common Rail SystemTurbocharged & Air-Air Intercooler
QSB6.7-G31230 kW @ 1500RPM209 kW @ 1500RPMElectronically Controlled High Pressure Common Rail Injection SystemTurbocharger
QSB6.7-G32190 kW @ 1500RPM173 kW @ 1500RPMElectronically Controlled High Pressure Common Rail Injection SystemTurbocharger
QSB6.7-G4185 kW @ 1500 RPM168 kW @ 1500 RPMBOSCH Common Rail SystemTurbocharged & Air-Air Intercooler

General Infomation of DCEC QSB6.7-G31 Generator Drive Engine
Engine ModelQSB6.7-G31Displacement6.7 L
Compression Ratio18.5:1Bore*Storke107 * 124 mm
No. of Cylinders6Governor Regulation3%
AspirationTurbochargedCPL Code Revision5277
Installation Data of DCEC QSB6.7-G31 Generator Drive Engine
Dry WeightN/AWet Weight552 kg
Center of Gravity from Front Face of Block431 mmCenter of Gravity above Crankshaft Centerline127 mm
Engine Idle Speed800 RPMFire Order1-5-3-6-2-4

Performance Data of DCEC QSB6.7-G31 Generator Drive Engine

Engine Speed (RPM)15001500Exhaust Gas Flow (kg/min)17.5215.78
Output Power (kWm)230209Air-Fuel Ratio21.8521.54
Torque (N.m)14641331Heat Loss Work – Environment (kW)37.333.89
Mean Effective Pressure (kPa)27462496Heat Loss Work – Coolant (kW)136128
Piston Speed (m/s)8.158.15Heat Loss Work – Exhaust (kW)198.92180.76
Friction Loss Power (kW)3131Heat Loss Work – Fuel Oil (kW)55
Coolant Flow Rate (L/min)166166Heat Loss Work – Intercooler  (kW)3128
Fuel Oil Consumption (kg/h)4642.01Rear Pressure Of Supercharger (kPa)237205
Air Intake Flow (m³/min)14.1912.78Pressurized Air Flow Rate (kg/min)16.815.1
Exhaust Gas Temp. ()523485Post-Pressure Temp. Of Supercharger ()203183

DCEC QSB6.7-G31 Generator Drive Engine

System Technical Data of QSB6.7-G31 Generator Drive Engine

Exhaust SystemMaximum Back Pressure10 mmHg
Maximum Allowable Static Bending Moment At Exhaust Outlet Flange12 N.m
Exhaust Pipe Size (Recommendatory)75 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 Recommended75 mm
LubricationSystemIdle Speed69 kPa
Maximum Oil Temperature124
Capacity with  Oil Pan : High – Low17.5 L – 15 L
Minimum Required Lube System Capacity – Sump plus Filters19.5 L
Cooling SystemCoolant Capacity – Engine Only9.4 L
Minimum Recommended Coolant Temperature70
The Limit Environmental Temperature At Peak Torque110
Minimum Fill Rate ( Without Low Level Alarm)19 l/m
Water Tank Capacity Without Water Expansion11%
Maximum Degassing Time25 min
Standard Thermostat (Modulating) Range82 – 95
Minimum Pressure Cap103 kPa
Minimum Fill Rate6%
Electrical SystemSystem Voltage24 V
Minimum Battery Capacity-Cold Soak At -18 C (0 F) Or Above
Engine Only Reserve Capacity:165 A
Engine Only Cold Cranking Amperes:N/A
Cool Start SystemMinimum Ambient Temperature For Unaided Cold Start12

Scopes of Supply of DCEC QSB6.7-G31 Generator Engine

Fuel System1. Fuel Transfer PumpExhuast System1. Exhuast Manifold
2. High-Pressure Fuel Pump2. Turbocharger
3. Fuel Filter3. Exhuast Elbow
Air Intake System1. Air Intake ManifoldStarting System1. Starter Motor
2. N/A2. Starter Rely
Cooling System1. Water PumpPower Output System1. Flywheel
2. Engine Fan2. Standard Flywheel Housing
3. Standard Radiator3. N/A
Lubricating System1. Oil PumpCharging System1. Charging Alternator
2. Oil Filter2. N/A
Engine Shut-Down System1. Engine Fuel Shut-Off SolenoidrEngine Mounting System1. Engine Mouting Bracket
Engine Auiliary Accessories1. Air Compressor

Optional Accessories of  DCEC QSB6.7-G31 Generator Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Shut-Off Valve2. Flame Trap
3. Air Filter3. Spark Arrestor Type Muffler & Bellows
4. Air Intake Pre-Filter4. Dpf System
5. Air Filter Alarm System5. 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
Engine Auiliary Accessories1. Hydraulic Oil PumpControl System1. Can Add Engine Monitoring System, Contro System With Wiring Harness.
2. Air Conditioner Compressor2. Can Add Self-Protection System that Integrated with Alarm System.
Power Output System1. ClutchEngine Mounting System1. Shock Absorber Pad

Committed to Providing Stable and Reliable Premiem Power System for Global Construction Machinery Manufacturer Partners, ConeMac is A Sub-Brand of the EMAC Group that Focuses on Construction Equipment Application. ConeMac’s Ranges of Products Mainly Inclduing Marine Construction Engines Power Pack, Construction Equipment Gearbox, Gear Reducer, Explosion-Proof Engines, Generator Set and Water Pump Set for Mining, Oil and Gas Field. For More Information of Our Industrial Power System Products, You Are Welcome to Visit ConeMac Homepage:

Modifiable Components of DCEC QSB6.7-G31 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
3. N/A3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Exhuast System1. Water-Cooled Exhuast ManifoldLubricating System1. Oil Pan Position
2. Water-Cooled Turbocharger2. Number of Dipstick
3. Can Modify Installation Position and Direction of Turbocharger3. Position of Dipstick Can Choose from 6 Positions
4. N/A4. Can Modify Oil Filter to be Remote Installation
Engine Shut-Down System1. 12V Solenoid for 12V Electric SystemStarting System1. Upgrading to Specified Brand and Speicifications of Starter Motor
2. Explosion-Proof Solenoid2. 12V Starter Motor for 12V Electric System
Fuel System1. Upgrade to Fuel Fitler that Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. All of auxiliary System can Choose Specified Brands and Specifications
2. N/A2. Additional Auxiliary Systems Can be Added for Special Applications
Cooling System1. Can Modify Engine fan Into Blower Fan or Suction FanPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Can Modify Central Position of Engine Cooling Fan2. Dual-Ear Flywheel Housing (For Twin-Starter System)
3. Can Choose Type of Engine Fan From Mechanical Type or Electric Type3. Some of Models can Modify Flywheel Housing Into PTO Integrated Type
4. N/A4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System1. Can Modify Engine Mouting Bracket

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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