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DCEC EQB125-20 Automotive Engine

DCEC EQB125-20 automotive engine is a 4-cylinders in line, 4 liter four-strokes engine with 114mm bore and 145mm stroke, equipped with Bosch vp44 and RQV-K governor. DCEC EQB125-20 automotive engine comes with turbocharged and charge air cooled, with a EURO III post-processor.

The prime power at 2800RPM of DCEC EQB125-20 automotive engine is 125HP.

As part of EMAC, DuraMac provides complete powertrain that integrated with DCEC engine, Fast-Eaton clutch, FAST-CAT transmission, Dongfeng-DANA axle and Komman air suspension, while the electrification of automobile is the certain future, Duramac also get involved with EV powertrain system.

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 EQB125-20 Automotive Engine

  • Lower oil consumption,Extended stroke,the expansion of the combustion gas more fully, Increase effective efficiency output, the economy is better.

  • Strong power,advanced 4 air valves structure, greater horsepower, air burning more thoroughly, while making low speed torque increase, quicken response speedily, climb strongly.

  • Excellent reliability, with compulsive cold cut articulated pistons, Can bear extreme high mechanical load and heat load, Strength can be comparable with heavy engine.

  • Better emissions, Decorate injector and symmetrical combustion chamber in center, make the cylinder is more homogeneous mixture, burning more fully, lower emissions.

  • Super life, 30% engines 800,000 km without overhaul.

  • Excellence power, Clean burning, use the advanced lean-burn closed loop electronic control system.

  • Excellent cold start performance, equipped with air suction electric preheater and 7.8 kw power starter, completely improve the cold start performance of the engine. Through the arctic village-MoHe of China-36°C extreme low temperature validation.

Technical Specifications

Engine Model:EQB125-20
Engine Type:6
Displacement:3.9 L
Rated Speed:2800 RPM
Rated Power / Speed:92 kW @ 2800 rpm
Peak Torque:410 N.m @ 1500 rpm
Fuel System:HPCR
Aspiration Method:Turbocharged & Intercooler
Emission Standard:N/A
Bore*Storke:114 mm * 145 mm
Packing Size(L*W*H):N/A
Wet Weight:680 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Engine Model

Advertised Power

Peak Torque

No. of Cylinders


Fuel System

B140-33140 HP @ 2500 RPM502 N.m @ 1500 RPM43.9 LBYC Pump / RQVK
B170-33170 HP @ 2500 RPM560 N.m @ 1300 RPM63.9 LBYC Pump / RQVK
B190-33190 HP @ 2500 RPM640 N.m @ 1300-1500 RPM63.9 LBYC Pump / RQVK
B210-33210 HP @ 2500 RPM700 N.m @ 1500 RPM63.9 LWeifu PH Pump / RQVK
EQB125-20125 HP @ 2800 RPM410 N.m @ 1500 RPM43.9 LBosch Pump
EQB140-20140 HP @ 2700 RPM502 N.m @ 1500 RPM43.9 LBosch Pump
EQB160-20160 HP @ 2500 RPM565 N.m @1500~1600 RPM65.9 LBYC P7000 Pump
EQB170-21170 HP @ 2500 RPM560 N.m @ 1300 RPM65.9 LBYC P7100/RQV-K Pump
EQB180-20A180 HP @ 2500 RPM610 N.m @ 1500 RPM65.9 LBosch Pump
EQB180-20B180 HP @ 2500 RPM610 N.m @ 1500 RPM65.9 LBosch P7100 / Weifu PW2000 Pump
EQB190-20190 HP @ 2800 RPM650 N.m @ 1400 RPM65.9 LBosch Pump
EQB190-21190 HP @ 2500 RPM640 N.m @ 1300-1500 RPM65.9 LBYC P 7100 Pump
EQB210-20A210 HP @ 2500 RPM700 N.m @ 1500 RPM65.9 LBosch Pump
EQB210-20B210 HP @ 2500 RPM700 N.m @ 1500 RPM65.9 LBosch P7100 / Weifu PW2000  Pump
EQB235-20235 HP @ 2500 RPM800 N.m @ 1600 RPM65.9 LBosch P7100 Pump

General Infomation of DCEC EQB125-20 Automotive Engine

Engine ModelEQB125-20Advertised Power92 kW @ 2800  RPM
Peak Torque410 N.m @ 1500  RPMCurve&DatasheetFR91361
Fuel SystemBosch pumpNo. Of Cylinders4
AspirationTurbocharged &  IntercoolerDisplacement3.9 L
Bore*Storke102 mm * 120 mmCPL Code Revision8493
Compression Ratio17.3:1 Emission CertificationGB17691/GB14761
App typesN/A Emission StandardEuro II standard
Dry weight343Wet weight362

Installation Data of DCEC EQB125-20 Automotive Engine

Idle speed750  RPM
Maximum no-load speed3150  RPM
Maximum overspeed performance (less than 15 seconds)4200  RPM
Maximum Altitude Allowed for Continuous Operation3000 M
Clutch Engage Torque at 800  RPM250 N.m
Distance from the center of gravity to the front face of the cylinder block269 Mm
Distance from center of gravity to crankshaft centerline (above crankshaft)168 Mm
Allowable maximum bending moment on the rear end face of the cylinder block1356 N.m

Engine Performance Data Rated power of EQB125-20  Automotive Drive Engine

Rated PowerTorque PeakRated PowerTorque Peak
Engine Speed28001500Exhaust Temperature480450
Oil Pressure400350Fuel Consumption2616
The Air Flow9.15.5Coolant Flow205110
The Flow Rate of Pressurized Air10.26.4Heat Loss Coolant4636.5
Pressurized Air Pressure12080Heat Loss Air208.5
The Exhaust Flow2113.4Mechanical Loss of Power2410.9
DCEC EQB125-20 Automotive Engine DATASHEET

System Technical Data of DCEC EQB125-20 Automotive Drive Engine

Lubrication systemTotal system volume10.9 L
Intake systemMaximum temperature rise from the outside air to the inlet of the supercharger15
Maximum intake resistance allowed when using dirty filter elements6.2 kPa
Charge air coolingMaximum permissible pressure difference before and after intercooler16.7 kPa
Minimum intake pipe diameter allowed65 Mm
Exhaust systemMaximum exhaust resistance with exhaust pipe and muffler10 kPa
Minimum exhaust pipe diameter allowed75 Mm
Allowable maximum static bending distance of supercharger exhaust flange27 N.m
Fuel SystemThe maximum oil inlet resistance of the oil transfer pump when using a clean filter150 mmHg
Maximum fuel oil return resistance520 mmHg
Cooling systemEngine coolant volume7 L
Thermostat standard adjustment temperature (range)83-95
Maximum coolant pressure (without pressure cap, thermostat closed)276 kPa
Maximum coolant temperature (engine outlet) 100 ℃ 
Minimum coolant expansion volume relative to system capacity6%
Minimum lower tank volume without expansion tank 5 L 
Minimum allowable cap pressure 50 kPa 
Coolant alarm temperature 100 ℃ 
Typical operating temperature range for fans with fan clutch 93 ℃ 
shutter opening temperature N/A 
24 Volt electrical systemMaximum resistance of starting circuit0.002
Recommended minimum battery capacityDIN72311/BS3911
Cold start systemMinimum cold start temperature without starting aid-10℃ at 120 RPM
Minimum cold start temperature when auxiliary (ether)-25°C at 110 RPM

Scopes of Supply of DCEC EQB125-20 Automotive Engine

Air Intake System1. Air Intake ManifoldExhuast System1. Exhuast Manifold
2. Water-Air Intercooler2. Turbocharger
3. N/A3. Exhuast Elbow
Fuel System1. Fuel Transfer PumpStarting System1. Starter Motor
2. High-Pressure Fuel Pump2. Starter Rely
3. Fuel Filter3. N/A
Charging System1. Charging AlternatorEngine Shut-Down System1. Engine Puel Shut-Off Solenoid
Lubricating System1. Oil PumpCooling System1. Water Pump
2. Oil Filter2. Engine Fan
3. N/A3. Standard Radiator
Power Output System1. FlywheelEngine Mounting System1. Engine Mouting Bracket
2. Standard Flywheel Housing2. N/A
Engine Auiliary Accessories1. Air Compressor
2. Power Steering Pump

Optional Accessories of DCEC EQB125-20 Automotive 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 FilterStarting System1.Manual Magnetic DC Contactor
2. Fuel Pre-Heater2. Dual Ears Flywheel Housing
3. N/A3. Spring Starter Motor
4. N/A4. Air Starter Motor
5. N/A5. Hydraulic Starter Motor
Lubricating System1. Oil Pre-Heater.Cooling System1. Silent Type Radiator
2. N/A2. Plateau Radiator
3. N/A3. Salt-Spray Resistant Radiator
4. N/A4. Coolant Pre-Heater
Power Output System1. ClutchEngine Mounting System1. Shock Absorber Pad
Engine Auiliary Accessories1. Hydraulic Oil PumpControl System1. Can Add Mechanical Accelerator Pedal
2. Air Conditioner Compressor2. N/A
3. N/A3. N/A

As part of EMAC, DuraMac is Committed to providing reliable powertrain system to commercial vehicle manufacturers around the world, a sub-brand of EMAC group that focusing on automotive application. Based on dozens of world-class engine manufacturing resources in China, and as official exporting agent of Fast tranmission (Joint venture with Caterpillar AT tranmission), Dongfeng Dana axle and Komman air suspension, DuraMac provides one-stop solutions covers from pre-design to components supply, from installation to commissioning, from pre-sales communication to after-sales service support. For more information of our automotive power system products, you are welcome to visit DuraMac homepage:

Modifiable Components of DCEC EQB125-20 Automotive Engine

Air Intake System1. Installation Position of Air FilterExhuast System1. Can Modify Installation Position and Direction of
2. Upgrade to  Heavy-Duty Type Air FitlerTurbocharger
3. N/A2. Water-Cooled Exhuast manifold
4. N/A3. Water-Cooled Turbocharger
Fuel System1. Upgrade to Fuel Fitler That Integrated with Fuel TransferStarting System1. 12V Starter Motor For 12v Electric System
Pump and Fuel Pre-Hearter2. Upgrading to Specified Brand and Speicifications of
2. N/AStarter Motor
Charging System1. 12V Charging Alternator for 12v Electric SystemEngine Shut-Down System1. 12V Solenoid for 12v Electric System
2. Explosion-Proof Charging Alternator2. Explosion-Proof Solenoid
3. Upgrading to Specified Brand And Speicifications of3. N/A
Charging Alternator4. N/A
Lubricating System1. Oil Pan PositionCooling System1. Can Modify Engine Fan Into Blower Fan or Suction Fan
2. Number of Dipstick2. Can Modify Central Position of Engine Cooling Fan
3. Position of Dipstick Can Choose From 6 Positions3. Can Choose Type of Engine Fan From Mechanical Type or
4. Can Modify Oil Filter to be Remote InstallationElectric Type
Power Output System1. Can Modify Size of Flywheel Housing and Flywheel.Engine Mounting System1. Can Modify Engine Mouting Bracket.
2. Dual-Ear Flywheel Housing (for Twin-Starter System)2. N/A
3. Some of Models Can Modify Flywheel Housing Into PTO3. N/A
Integrated Type.4. N/A
4. Engine Have Connecting Port of PTOs, That Able to5. N/A
Provide Power Output.6. N/A
Engine Auiliary Accessories1. All of Auxiliary System Can Choose Specified Brands and
2. Additional Auxiliary Systems Can be Added for Special

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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