4BTA3.9-C125-II Pump Engine
DCEC 4BT3.9 series electronic pump drive engine can reach upto EU Stage V emission standard, the number 30/40/50 are the emission standard mark of engine, which means engine emission standard are EU Stage III, IV, V. For different emission standard DCEC 4BT3.9 series electronic pump drive engine, the engine itself are the same, the major different of different emission standard engine models are the after-treatment system and ECU program, EMAC will keep updating products introduction page of different emission standard engine models, welcome to subscribe our website to get latest update information.
If you are in need of engine model that not available on our website for the moment, please contact EMAC sales team for technical details and related documents, our well trained sales and engineering team will help you with all products and techical documents available here at DCEC.
1. Advanced design and sophisticated manufacturing, adapt to various harsh working conditions, high strength, strong ability to work under heavy loads.
2. CMS adopts advanced design and precise manufacturing technology, which reduces fuel consumption by 20% compared with similar domestic products.
3. Manufacturing process: The cylinder block and cylinder head adopt integrated design, which eliminates the occurrence of engine water leakage and oil leakage.
4. Good reliability The integrated design of cylinder block and cylinder head prevents water and oil leakage of the engine. There are 40% fewer parts than the same type of engine, and the failure rate is greatly reduced.
5. 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.
6. 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.
7.Forged steel camshafts and crankshafts, high-strength cylinders, cast on multiple cylinders, high rigidity, high pressure resistance, good reliability, and long service life.
Technical Specifications
Basic Introduction of DCEC 4BTA3.9-C125-II Pump Engine
Engine Model: | 4BTA3.9-C125-II |
Engine Type: | 4 Cylinders, in Line |
Displacement: | 3.9 L |
Rated Speed: | 2200 RPM |
Aspiration Method: | Turbocharged & Water-AirIntercooler |
Emission Standard: | Euro Stage II |
Bore*Storke: | 102 mm*120 mm |
Packing Size(L*W*H): | 778 mm * 753 mm * 882 mm |
Dry Weight: | 355 kg |
Lead Time: | 15-30 Working Days |
Payment Terms: | T/T ,L/C |

Engine Model | Output Power | Torque | Fuel System | Aspiration |
4BT3.9-P50 | 36 kW @ 1500 RPM | 229 N.m @ 1500 RPM | Mechanical Pump / Electronical Governor | Turbocharged |
4BT3.9-P55 | 40 kW @ 1800 RPM | 212 N.m @ 1800 RPM | Mechanical Pump / Electronical Governor | Turbocharged |
4BT3.9-C90 | 66 kW @ 2900 RPM | N/A | Mechanical Pump / RSV Mechanical Governor | Turbocharged |
4BTA3.9-P80 | 58 kW @ 1500 RPM | 369 N.m @ 1500 RPM | Direct Injection / Electronical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C80-II | 60 kW @ 2200 RPM | 360 N.m @ 1400 RPM | Mechanical Pump / Electronical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-P90 | 67 kW @ 1800 RPM | 355 N.m @ 1800 RPM | Mechanical Pump / Electronical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-P95 | 70 kW @ 1500 RPM | 446 N.m @ 1500 RPM | Mechanical Pump / RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C100 | 74 kW @ 2200 RPM | 410 N.m @ 1500 RPM | BYC PB / RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C100-II | 74 kW @ 2200 RPM | 410 N.m @ 1500 RPM | Mechanical Pump / Electronical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C105 | 78 kW @ 2900 RPM | N/A | Mechanical Pump / RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-P110 | 80 kW @ 1800 RPM | 424 N.m @ 1800 RPM | BYC PB / RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C110-II | 82 kW @ 2200 RPM | 460 N.m @ 1500 RPM | Weifu PW2000 Pump/ RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C125 | 93 kW @ 2200 RPM | 404 N.m @ 2200 RPM | Weifu PW2000 Pump / RQV-K Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C125-II | 93 kW @ 2200 RPM | 475 N.m @ 1500 RPM | Weifu PW2000 Pump / RQV-K Governor | Turbocharged & Water-Air Intercooler |
4BTA3.9-C130-II | 97 kW @ 2200 RPM | 475 N.m @ 1500 RPM | Weifu PW2000 Pump / RQV-K Governor | Turbocharged & Water-Air Intercooler |
4BTAA3.9-C80 | 60 kW @ 2200 RPM | 385 N.m @ 1300 RPM | BYC P7100 Pump / RSV Mechanical Governor | Turbocharged & Water-Air Intercooler |
4BTAA3.9-C110 | 82 kW @ 2200 RPM | 500 N.m @ 1400 RPM | Weifu PW2000 Pump / RSV Mechanical Governor | Turbocharged & Air-Air Intercooler |
4BTAA3.9-C115 | 87 kW @ 2200 RPM | 530 N.m @ 1300 RPM | Weifu PW2000 Pump / RSV Mechanical Governor | Turbocharged & Air-Air Intercooler |
4BTAA3.9-C125-II | 93 kW @ 2300 RPM | 530 N.m @ 1400 RPM | BYC P7100 Pump / RSV Mechanical Governor | Turbocharged & Air-Air Intercooler |
4BTAA3.9-C130 | 97 kW @ 2500 RPM | 519 N.m @ 1400 RPM | BYC P7100 Pump / RQV-K Governor | Turbocharged & Air-Air Intercooler |
——END—— |
General Infomation of DCEC 4BTA3.9-C125-II Pump Engine | |||
Engine Model | 4BTA3.9-C125-II | Advertised Power | 93 kW @ 2200 RPM |
Peak Torque | 475 N.m @ 1500 RPM | Curve & Datasheet | FR93936 |
Compression Ratio | 17.3:1 | No. Of Cylinders | 4 Cylinders |
Aspiration | Turbocharged & Water-AirIntercooler | Displacement | 3.9 L |
Bore*Storke | 102 mm * 120 mm | CPL Code Revision | 0760 |
Fuel System | Weifu PW2000 Pump / RQV-K Mechanical Governor | Application | N/A |
Dry Weight | 355 kg | Basic Engine(L*W*H) | 778 mm * 753 mm * 882 mm |
Emission Standard | Euro Stage II | ||
Installation Data of DCEC 4BTA3.9-C125-II Pump Engine | |||
Center Of Gravity. Distance From Front Face Of Block | 391 mm | ||
Center Of Gravity. Distance Above Crank Centerline(Above Crankshaft) | 160 mm | ||
Instantaneous Inertia At Rotating: (Without Flywheel) | 0.143 kg.m2 | ||
Maximum Crankshaft Thrust Bearing Load Limit-Intermittent Load | 3425 N | ||
Maximum Crankshaft Thrust Bearing Load Limit-Continuous Load | 1112 N | ||
Maximum (Static) Bending Moment at Front Support Mounting Surface | 435 N.m | ||
Maximum (Static) Bending Moment Allowed for Side-Mounted Boss | N/A | ||
Maximum (Static) Bending Moment at Rear Face of Block | 1356 N.m | ||
Moment of Inertia of Complete Engine— Roll Axis | 11.1 kg.m2 | ||
Moment of Inertia of Complete Engine— Pitch Axis | 19.1 kg.m2 | ||
Moment of Inertia of Complete Engine— Yaw Axis | 14.7 kg.m2 | ||
Performance Data of DCEC 4BTA3.9-C125-II Pump Engine | |||
Minimum Idle Speed | 800 RMP | ||
Maximum Speed Adjustment Speed (10% Rated Load) | 2540 RMP | ||
Maximum Overspeed Performance | 3500 RMP | ||
Maximum Altitude Allowed for Continuous Operation | 2700 m | ||
Maximum Torque Available at Closed Throttle Low Idle Speed | 220 N.m | ||
Governor Regulation | ≤8% | ||
Throttle Handle Angle – High Idle | 101±5° Deg | ||
Throttle Handle Angle – Low Idle | 76±5° Deg | ||
Throttle Handle Angle – Rotation Angle | 25±10° Deg | ||
Parking Handle Angle – Free Position | 42±5° Deg | ||
Parking Handle Angle – Parking Position | 340±5° Deg | ||
——END—— |
Engine Performance Data Rated power of DCEC 4BTA3.9-C125-II Pump Engine | |||||
Rated Power | Torque Peak | Rated Power | Torque Peak | ||
Engine Speed | 2200 RPM | 1500 RPM | Exhaust Gas Temperature | 560 ℃ | 520 ℃ |
Output Power | 93 kW | 75 kW | Heat Rejection to Ambient | 10.3 kW | 10.5 kW |
Torque | 404 N.m | 475 N.m | Heat Rejection to Coolant | 59.2 kW | 43.5 kW |
Intake Manifold Pressure | 133 kPa | 112 kPa | Heat Rejection to Fuel | 0.5 kW | 0.2 kW |
Friction Horsepower | N/A | N/A | Engine Coolant Flow | 3.1 litre | 1.8 litre |
Intake Air Flow | 104 litre | 71 litre | External Cooling Circuit Resistance | 20.7 kPa | 20.7 kPa |
Exhaust Gas Flow | 315 litre | 210 litre | Steady State Smoke | 1.0 FSN | 0.8 FSN |
Turbo Comp. Outlet Pressure | 137 kPa | 115 kPa |
System Technical Data of DCEC 4BTA3.9-C125-II Pump Engine | ||
Exhaust System | Maximum Exhaust Back Pressure | 10 kPa |
Exhaust Pipe Size Normally Acceptable | 75 mm | |
Maximum Static Support Weight of Turbocharger Outlet Flange | 13.5 N.m | |
Exhaust Manifold Insulation Acceptable | No | |
Turbocharger Insulation Acceptable | No | |
Air Intake System | Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Clean Element | 4 kPa |
Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Dirty Element | 6 kPa | |
Minimum Dirt Holding Capacity with Heavy Duty Air Cleaner | 53 g/cfm | |
Maximum Temperature Rise from Ambient to the Inlet of the Turbocharger | 17 ℃ | |
Recommended Intake Piping Size (Inner Diameter) | 76 mm | |
Lubrication System | Normal Operating Oil Pressure Range | 69-345 kPa |
Maximum Lube Oil Flow for Engine Accessories | 4 litre / min. | |
Maximum Sump Oil Temperature | 127 ℃ | |
Minimum Engine Oil Pressure for Engine Protection Devices-At Rated Speed and Load | 276 kPa | |
Minimum Engine Oil Pressure for Engine Protection Devices-At Torque Peak Speed and Load | 207 kPa | |
Minimum Engine Oil Pressure for Engine Protection Devices- At Low Idle | 69 kPa | |
Minimum Required Lube System Capacity – Sump plus Filters | 9.0 litre | |
By-pass Filtration Required | No | |
Sump Inclination Angle— Front Up | 45° | |
Sump Inclination Angle— Front Down | 45° | |
Sump Inclination Angle— Side to Side | 45° | |
Cooling System | Coolant Capacity – Engine Only | 8.3 litre |
Maximum External Engine Cooling Cycle Resistance | 34 kPa | |
Minimum Pump Inlet Pressure with Open Thermostat and no Pressure Cap | N/A | |
Maximum Static Head of Coolant Above Engine Crankshaft Centerline | N/A | |
Standard (Modulating) Thermostat Range | 82-93 ℃ | |
Maximum Block Coolant Pressure with Closed Thermostat and no Pressure Cap | N/A | |
Minimum Pressure Cap Pressure | 50 kPa | |
Maximum Engine Coolant Temperature at Engine Outlet | 100 ℃ | |
Maximum Engine Coolant Temperature for Engine Protection Devices | 101.6 ℃ | |
Minimum Engine Coolant Temperature | 71 ℃ | |
Minimum Fill Rate | 19 litre | |
Maximum Initial Fill Time | 5 min | |
Minimum Coolant Expansion Space | 6% | |
Maximum Deaeration Time | 25 min | |
Minimum Drawdown of Total System Capacity | 11% | |
Fan-on Engine Coolant Outlet Temperature | 93 ℃ | |
Shutter Opening Coolant Outlet Temperature | 85 ℃ | |
Cool Start System | Minimum Battery Capacity-Cold Soak-18°C or Above, Engine Only – Cold Cranking Amp. | 800 CCA (12 V) 400 CCA(24 V) |
Minimum Battery Capacity-Cold Soak-18°C or Above, Engine Only – Reserve Capacity | 160 min (12 V) 80 min (24 V) | |
Minimum Ambient Temperature for Unaided Cold Start | N/A | |
Minimum Ambient Temperature without Auxiliary Cold Start | 0 ℃ (12 V) 32 ℃ (24 V) | |
Minimum Cranking Speed Required for Unaided Cold Start | 125 RPM | |
Breakaway Torque at Minimum Unaided Start Temperature | N/A | |
Cranking Torque at Minimum Unaided Start Temperature | N/A | |
Cranking Torque at -10°F | N/A | |
Fuel System | Maximum Fuel Flow of Oil Pump | 193 kg/hr |
Maximum Oil Intake Resistance-Clean Fuel Filter | 14 kPa | |
Maximum Oil Intake Resistance-Dirty Fuel Filter | 27 kPa | |
Maximum Oil Flow Resistance-With Check Valve | N/A | |
Maximum Oil Flow Resistance-No Check Valve | 68 kPa | |
Maximum Fuel Inlet Temperature | 71 ℃ | |
Minimum Tank Bleed Performance at 6 "Water Column Pressure | 340 litre | |
——END—— |
Scopes of Supply of DCEC 4BTA3.9-C125-II Pump Drive Engine | ||||
Air Intake System | 1. Air intake manifold | Exhuast System | 1. Exhuast manifold | |
2. Air filter | 2. Turbocharger | |||
3. Water-AirIntercooler | 3. Exhuast elbow | |||
Starting System | 1. Starter motor | Charging System | 1. Charging alternator | |
2. Starter rely | 2. N/A | |||
Lubricating System | 1. Oil pump | Fuel System | 1. Fuel transfer pump | |
2. Oil filter | 2. High-pressure fuel pump | |||
3. N/A | 3. Machanical governor | |||
4. Fuel Filter | ||||
Engine Shut-Down System | 1. Engine fuel shut-off solenoid | Power Output System | 1. Flywheel | |
2. N/A | 2. Standard flywheel housing | |||
Cooling System | 1. Sea Water Pump & Heat Exchanger/ Radiator | Engine Mounting System | 1. Engine Mouting Bracket | |
——END—— |
Optional Accessories of DCEC 4BTA3.9-C125-II Pump Drive Engine | ||||
Air Intake System | 1. Air Intake Pre-heater | Exhuast System | 1. Muffler & bellows | |
2. Air intake pre-filter | 2. Flame trap | |||
3. Air filter alarm system | 3. Spark arrestor type Muffler & bellows | |||
4.N/A | 4. DPF system | |||
Fuel System | 1. Coarse Filter | Engine Auiliary Accessories | 1. Hydraulic oil pump | |
2. Fuel pre-heater | 2. Hydraulic cluch | |||
Starting System | 1. Manual Magnetic DC Contactor | Control System | 1. Engine monitor | |
2. Dual ears flywheel housing | 2.Engine protection system with alarm system | |||
3. Spring Starter Motor | 3. Machanical engine control lever syste | |||
4. Air Starter Motor | 4. Electric engine control lever system | |||
5. Hydraulic Starter Motor | 5. N/A | |||
6. Manual Magnetic DC Contactor | 6. N/A | |||
Power Output System | 1. Gear reduction gearbox | Cooling System | 1. Coolant pre-heater | |
2. Reverse gear box | 2. Jacket water heater | |||
Lubricating System | 1. Oil pre-heater | Engine Mounting System | 1. Shock absorber pad | |
——END—— |
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Modifiable components of DCEC 4BTA3.9-C125-II Pump Drive Engine | ||||
Air Intake System | 1. Installation position of air filter | Charging System | 1. 12V charging alternator for 12v electric system | |
2. Upgrade to heavy-duty type air fitler | 2. Explosion-proof charging alternator | |||
3. N/A | 3. Upgrading to specified brand and speicifications of charging alternator | |||
Exhuast System | 1. Can modify installation position and direction of turbocharger | Lubricating System | 1. Oil Pan position | |
2. Water-cooled exhuast manifold | 2. Number of dipstick | |||
3. Water-cooled turbocharger | 3. Position of dipstick can choose from 6 positions | |||
4. N/A | 4. Can modify oil filter to be remote installation | |||
Fuel System | 1. Upgrade to fuel fitler that integrated with fuel transfer pump and fuel pre-hearter | Starting System | 1. 12V starter motor for 12v electric system | |
2. N/A | 2. Upgrading to specified brand and speicifications of starter motor | |||
Engine Shut-Down System | 1. 12V solenoid for 12v electric system | Power Output System | 1. Can modify size of flywheel housing and flywheel. | |
2. Explosion-proof solenoid | 2. Dual-ear flywheel housing (For twin-starter system) | |||
3. N/A | 3. Some of models can modify flywheel housing into PTO integrated type. | |||
4. N/A | 4. Engine have connecting port of PTOs, that able to provide power output. | |||
Cooling System | 1. Can modify engine into keel cooling system | Engine Mounting System | 1. Can modify engine mouting bracket. | |
Engine Auiliary Accessories | 1. Additional auxiliary systems can be added for special applications. | |||
——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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