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4BTAA3.9-C125 Industrial Engine

DCEC 4BTAA3.9-C125 Industrial engine is a 4-cylinders in line, 3.9 liter four-strokes engine with 102 mm bore and 120 mm stroke. Equipped with Weifu PW2000 pump and RQV-K governor, engine comes with turbocharger and Air-Air Intercooler. The prime power at 2200 RPM of DCEC 4BTAA3.9-C125 Industrial engine is 125 HP.

As part of EMAC, ConeMac provides industrial power pack solution that integrated with air intake, air exhaust, cooling system, control system, transmission and hydraulic accessories, We also supplying special products such as explosion proof engine, generator and water pump set, as well as ultra-low temperature condition engine power pack. 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.

1. Advanced design and sophisticated manufacturing to adapt to various harsh working conditions! High-strength parts, strong ability to work under heavy loads.
2. 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.
3. 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.
4. 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.
5. 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.
6. By optimizing the control strategy and combining with the actual operating conditions of the equipment, the fuel economy can be further improved.

Technical Specifications

Basic Introduction of DCEC 4BTAA3.9-C125 Industrial Engine

Engine Model:4BTAA3.9-C125
Engine Type:4 Cylinders, in Line
Displacement:3.9 L
Rated Speed:2200 RPM
Aspiration Method:Turbocharged & Air-Air Intercooler
Emission Standard:N / A
Bore*Storke:102 mm * 120 mm
Packing Size(L*W*H):778 mm * 634 mm * 912 mm
Wet Weight:355 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C
DCEC 4BT3.9 Industrial Engine.620px&350px

Engine Model

Rated Power

Peak Torque

Fuel System

Aspiration

4BT3.9-C8080 HP @ 2000 RPM330 N.m @ 1500 RPMWeifu PW Pump / RSV Mechanical GovernorTurbocharged
4BT3.9-C100100 HP @ 2400 RPM330 N.m @ 1600 RPMWeifu PW Pump / RSV Mechanical GovernorTurbocharged
4BT3.9-C105103 HP @ 2800  RPM330 N.m @ 1600 RPMWeifu A Pump / RSV Mechanical GovernorTurbocharged
4BT3.9-C110110 HP @ 2600 RPM330 N.m @ 1600 RPMWeifu A Pump / RSV Mechanical GovernorTurbocharged
4BTA3.9-C8080 HP @ 2200 RPM360 N.m @ 1400 RPMBYC PB Pump / RSV Mechanical GovernorTurbocharged & Water-Air Intercooler
4BTA3.9-C100100 HP @ 2200 RPM410 N·m @ 1500 RPMBYC PB Pump / RSV Mechanical GovernorTurbocharged & Water-Air Intercooler
4BTA3.9-C110110 HP @ 2200 RPM460 N.m @ 1500 RPMWeifu PW2000 Pump / RSV Mechanical GovernorTurbocharged & Water-Air Intercooler
4BTA3.9-C125125 HP @ 2200 RPM475 N.m @ 1500 RPMWeifu PW2000 Pump / RQV-K Mechanical GovernorTurbocharged & Water-Air Intercooler
4BTA3.9-C130130 HP @ 2500 RPM475 N.m @ 1500 RPMWeifu PW2000 Pump / RQV-K Mechanical GovernorTurbocharged & Water-Air Intercooler
4BTAA3.9-C125125 HP @ 2200  RPM480 N·m @ 1400  RPMWeifu PW2000 Pump / RQV-K Mechanical GovernorTurbocharged & Air-Air Intercooler
——END——

General Infomation of DCEC 4BTAA3.9-C125 Industrial Engine

Engine Model4BTAA3.9-C125Curve & DatasheetFR92941
Compression Ratio17.3:1Displacement3.9 L
Advertised Power93 kW @ 2200 RPM
125 HP @ 2200 RPM
Bore*Storke102 mm * 120 mm
Peak Torque480 N·m @ 1400 RPMAspirationTurbocharged & Air-Air Intercooler
Fuel SystemWeifu PW2000 Pump / RQV-K Mechanical GovernorCylinders 4 Cylinders, in Line
Engine Wet Weight355 kgBasic Engine(L*W*H)778 mm * 634 mm * 912 mm

Installation Data of DCEC 4BTAA3.9-C125 Industrial Engine

Moment Of Inertia Of Rotating Components (No Flywheel)0.143 kg·m²
Center Of Gravity From Front Face Of Block262 mm
Center Of Gravity Above Crankshaft Centerline160 mm
Maximum (Static) Bending Moment At Front Support Mounting Surface435 N.m
Maximum (Static) Bending Moment At Side Pad Mounting SurfaceN / A
Maximum (Static) Bending Moment at Rear Face of Block1356 N.m
Moment of Inertia of Complete Engine— Roll Axis11.1 kg·m²
Moment of Inertia of Complete Engine— Pitch Axis19.1 kg·m²
Moment of Inertia of Complete Engine— Yaw Axis14.7 kg·m²
Maximum Crankshaft Thrust Bearing Load Limit-Intermittent Load3425 N
Maximum Crankshaft Thrust Bearing Load Limit-Continuous Load1112 N

Performance Data of DCEC 4BTAA3.9-C125 Industrial Engine

Minimum Idle Speed900 RPM
Maximum Speed Adjustment Speed (10% Rated Load)2460 RPM
Maximum Overspeed Performance3500 RPM
Maximum Altitude Allowed for Continuous Operation2200 m
Maximum Torque When the Throttle is Fully Closed250 N.m
Throttle Handle Angle – High Idle113 ± 10° Deg
Throttle Handle Angle – Low Idle71 ± 10° Deg
Throttle Handle Angle – Rotation Angle242 ± 5° Deg
Throttle Angle at Engine Shutdown – Engine Work107 ± 5° Deg
Throttle Angle at Engine Shutdown – Engine Shutdown65 ± 5° Deg
Nominal Governor Regulation8%
Torque Converter Stall Speed1300 RPM
——END——

Engine Performance Data Rated Power of DCEC 4BTAA3.9-C125 Industrial Engine

Rated PowerTorque PeakRated PowerTorque Peak
Engine Speed2200 RPM1400 RPMExhaust Gas Temperature480 °C580 °C
Gross Power Output93 kW75 kWHeat Rejection to AmbientN / AN / A
Torque404 N.m480 N.mHeat Rejection to CoolantN / AN / A
Friction HorsepowerN / AN / AHeat Rejection to FuelN / AN / A
Intake Manifold Pressure161 kPa91 kPaEngine Coolant FlowN / AN / A
Turbo Comp. Outlet Pressure173 kPa95 kPaExternal Cooling Circuit ResistanceN / AN / A
Intake Air Flow10.6 kg / min5.5 kg / minAltitude Limitations-IntermittentN / AN / A
Exhaust Gas Flow350 l / s190 l / sAltitude Limitations-ContinuousN / AN / A
Turbo Comp. Outlet Temperature170 °C120 °CSteady State Smoke1.5 Bosch2.0 Bosch
DCEC Cummins 4BTAA3.9-C125 Industrial engine

System Technical Data of DCEC 4BTAA3.9-C125 Industrial Engine

Exhaust SystemMaximum Exhaust Back Pressure10.1 kPa
Exhaust Pipe Size Normally Acceptable75 mm
Maximum Static Supported Weight at the Turbocharger Outlet Flange14 kg
Exhaust Manifold Insulation Acceptable No
Turbocharger Insulation Acceptable No
Air Intake SystemMaximum Intake Air Restriction with Heavy Duty Air Cleaner— Clean Element4 kPa
Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Dirty Element6 kPa
Minimum Dirt Holding Capacity with Heavy Duty Air Cleaner25 g / cfm
Maximum Temperature Rise from Ambient to the Inlet of the Turbocharger17
Recommended Intake Piping Size (Inner Diameter)101.6 mm
Lubrication SystemNormal Operating Oil Pressure Range— Minimum Low Idle69 kPa
Normal Operating Oil Pressure Range— —Maximum Rated Speed345 kPa
Maximum Oil Pressure Spike on Cold Engine690 kPa
Maximum Lube Oil Flow for Engine Accessories4.0 l / min
Maximum Sump Oil Temperature127
Minimum Required Lube System Capacity – Sump plus Filters9.0 l
By-Pass Filtration RequiredYes
Angularity of Standard Oil Pan-Front Down45 °
Angularity of Standard Oil Pan-Front Up45 °
Angularity of Standard Oil Pan-Side to Side45 °
Cooling SystemMinimum Operating Block Coolant Temperature71
Minimum Fill Rate19 l / min
Maximum Initial Fill Time5 min
Maximum Coolant Temperature For Engine Protection Controls102
Maximum Static Head Of Coolant Above Crankshaft Centerline18.3 m
Minimum Pressure Cap Rating At Sea Level48 kPa
Maximum Pressure Cap Rating At Sea Level103 kPa
Minimum Coolant Expansion Space (% Of System Capacity)6%
Maximum Deaeration Time25 min
Minimum Drawdown (% Total Cooling System Capacity)11%
Full On Fan Engine Coolant Outlet Temperature93.3
Shutter Opening Temperature – Coolant85
Shutter Opening Temperature – Intake Manifold Air (CAC)66
Coolant Capacity – Engine Only8.3 l
Minimum Water Pump Inlet Pressure With Non-deaerating Or Partially Deaerating Cooling System0 kPa
Maximum Coolant Operating Temperature At Engine Outlet (Maximum Top Tank Temp)100
Standard (Modulating) Thermostat Range82-93
Maximum Recommended External Coolant Flow Restriction In Engine Circuit34 kPa
Cold Starting SystemMinimum Battery Capacity-Cold Soak-18°C or Above, Engine Only – Cold Cranking Amp.800 CCA(12V),400 CCA(24V)
Minimum Battery Capacity-Cold Soak-18°C or Above, Engine Only – Reserve Capacity160 min(12V),80 min(24V)
Maximum Pressure Drop of Starting CircuitN / A
Minimum Ambient T Emperature for Unaided Cold Start0
Minimum Cranking Speed Required for Unaided Cold Start125 RPM
Maximum Starting Circuit ResistanceTBD
Fuel SystemMaximum Fuel Flow on the Supply Side of the Fuel Pump193 kg / hr
With Clean Fuel Filter Element(s) At Maximum Fuel Flow14 kPa
With Dirty Fuel Filter Element(s) At Maximum Fuel Flow27 kPa
Maximum Fuel Drain Restriction-With Check ValvesN / A
Maximum Fuel Drain Restriction-Less Check Valves68 kPa
Maximum Fuel Inlet Temperature71 °C
Minimum Fuel Tank Venting Rate340 l / hr
——END——

Scopes of Supply of DCEC 4BTAA3.9-C125 Industrial 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
——END——

Optional Accessories of DCEC 4BTAA3.9-C125 Industrial 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
——END——

 

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: www.Sino-Gen.com

Modifiable Components of DCEC 4BTAA3.9-C125 Industrial Engine

Air Intake System1. Installation Position of Air FilterCharging System1. 12 V Charging Alternator for 12 V 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. 12 V Solenoid for 12 V Electric SystemStarting System1. Upgrading to Specified Brand and Speicifications of Starter Motor
2. Explosion-Proof Solenoid2. 12 V Starter Motor for 12 V 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
——END——

 

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


Generator Engine - Mr. Haden Wu

Marine Engine - Mrs. Hailey Tang

Automotive Engine - Mr. Vin Hu

Industrial Engine - Miss. Bella Huang

Pump Engine - Miss. Zora Zhou

Sales Director - Mr. Jasper Lee      

Service Team


Technical Service - Mr. Vin Hu

Customer Service - Mrs. Wendy Fu

Contact EMAC Now!

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