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
*BoreStorke:**	102 mm*120 mm
*Packing Size(LWH):*	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(LWH)	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
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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
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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
Starting System	2. Starter rely	Charging System	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
Engine Shut-Down System	2. N/A	Power Output System	2. Standard flywheel housing

Cooling System	1. Sea Water Pump & Heat Exchanger/ Radiator	Engine Mounting System	1. Engine Mouting Bracket

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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
Fuel System	2. Fuel pre-heater	Engine Auiliary Accessories	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
Power Output System	2. Reverse gear box	Cooling System	2. Jacket water heater

Lubricating System	1. Oil pre-heater	Engine Mounting System	1. Shock absorber pad

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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
Fuel System	2. N/A	Starting System	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.
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