4BTA3.9-GM47 Auxiliary Engine

DCEC 4BTA3.9-GM47 marine auxiliary engine is a 4-cylinders in line, 3.9 liters four-strokes engine with 102mm bore and 120 mm stroke. Equipped with BYC A fuel pump and GAC electronic governor, engine comes with turbocharger and Water-Air Intercooler.
The prime power for generator set 1500RPM of DCEC 4BTA3.9-GM47 marine auxiliary engine is 47kW.
DCEC provides both heat exchanger cooling and radiator cooling marine auxiliary engines, which mainly using for marine main generator and marine emergency generator. For the emergency generator set applications, we provide additional options for customers such as dual starter motor system (we provide both electric and spring starter motor for customers), which are required by most of international classifications. All of DCEC marine auxiliary engine are comes with dry type exhaust system, which means dry type exhaust manifold and dry type turbocharger, SeaMac provides upgrading services for water-cooled exhaust system, which modify dry type exhaust system into water-cooled exhaust system, which are quite important and often requested by passenger boat projects.

Advantages of 4BTA3.9-GM47 Auxiliary Engine

1. Advanced design and sophisticated manufacturing, adapt to various harsh working conditions, high strength, strong ability to work under heavy loads.
2. The cylinder block and cylinder head adopt integrated design to prevent the occurrence of engine water and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.
3. The cylinder bore adopts a platform mesh honing design, the perfect geometric structure effectively prevents oil leakage, and the use of advanced technologies such as new piston ring components and gasket crimping and molding reduces oil loss.
4. Adopt Holset supercharger with integral wastegate valve, low speed response and strong power.
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.

Technical Specifications

Basic Introduction of DCEC 4BTA3.9-GM47 Auxiliary Engine

Engine Model:	4BTA3.9-GM47
Engine Type:	4 Cylinders
Displacement:	3.9 L
Rated Speed:	1500 RPM
Aspiration Method:	Turbocharged & Water-Air Intercooler
Emission Standard:	N / A
*BoreStorke:**	102 mm * 120 mm
*Packing Size(LWH):*	N / A
Wet Weight:	350 kg
Lead Time:	15-30 Working Days
Payment Terms:	T/T ,L/C

Performance Curve-DCEC Cummins 4BTA3.9-GM65 Marine Auxiliary Engine

Engine Model	Fuel Consumption	Rated Power	Fuel System	Aspiration
4BTA3.9-GM47	214 g / kW.h @ 1500 RPM	63 BHP @ 1500 RPM	BYC A Pump / GAC 24 V Electronic Governor	Turbocharged & Water-Air Intercooler
4BTA3.9-GM65	219 g / kW.h @ 1800 RPM	87 BHP @ 1800 RPM	BYC A Pump / GAC Electronic Governor	Turbocharged & Water-Air Intercooler
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General Infomation of DCEC 4BTA3.9-GM47 Marine Auxiliary Engine
Engine Model	4BTA3.9 – GM47	Displacement	3.9 L
*Bore Stroke**	102 mm * 120 mm	Aspiration	Turbocharged & Water-Air Intercooler
Cylinders	4 Cylinders	Fuel System	BYC A / GAC 24 V Electronic Governor
Governor Regulation	≤ 5 %	Rated Power	63 BHP (47 kW) @ 1500 RPM
Standby Power	70 BHP (52 kW) @ 1500 RPM	Dry Weight	350 kg

Installation Data of DCEC 4BTA3.9-GM47 Marine Drive Engine
Distance Between Center of Gravity and Rear End Face of Cylinder Block			373 mm
Distance from Center of Gravity to Center Line of Crankshaft (Above Crankshaft)			163 mm
Low Idle Speed			950 – 1050 RPM
Compression Ratio			17.3 : 1
Piston Speed			6 m / sec
Firing Order			1 – 3 – 4 – 2
Maximum (Static) Bending Moment at Rear Face of Block			1356 – N.m

Fuel System of DCEC 4BTA3.9-GM47 Marine Drive Engine
Maximum Fuel Flow of Oil Pump			N / A
Maximum Oil Intake Resistance-Clean Fuel Filter			63.5 mmHg
Maximum Oil Intake Resistance-Dirty Fuel Filter			100 mmHg
Maximum Fuel Inlet Temperature			60 ℃
Maximum Allowable Return Line Pressure			517 mmHg
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System Technical Data of DCEC 4BTA3.9-GM47 Marine Auxiliary Engine

Exhaust System	Maximum Back Pressure	76 mmHg
	Exhaust Gas Flow	N / A
	Exhaust Gas Temperature	530 ℃
	Exhaust Heat Loss Work	N / A
	Recommended Exhaust Pipe Diameter	75 mm
	Maximum Static Support Weight of Turbocharger Outlet Flange	N / A

Air Intake System	Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Clean Element	380 mmH2O
	Maximum Intake Air Restriction with Heavy Duty Air Cleaner— Dirty Element	635 mmH2O
	Minimum Dirt Holding Capacity with Heavy Duty Air Cleaner	N / A
	Maximum Temperature Rise from Ambient to the Inlet of the Turbocharger	17 ℃
	Maximum Pressure Drop from Turbocharger Outlet to Intake Manifold	75 mmHg
	Intake Air Flow	N / A
	Heat Rejection to Ambient	N / A
	Minimum Ambient Temperature for Cold Starting	-12 ℃

LubricationSystem	Normal Operating Oil Pressure Range	207 – 448 kPa
	Maximum Sump Oil Temperature	120 ℃
	Oil Capacity when Using Bias Sump: Maximum -Minimum	9.5 – 8.5 litre
	Minimum Oil Pressure— At Low Idle	69 kPa
	Minimum Required Lube System Capacity – Sump Plus Filters	10.9 litre
	Sump Inclination Angle— Front Up	20 °
	Sump Inclination Angle— Front Down	45 °
	Sump Inclination Angle— Side to Side	45 °

Cool Start System	Minimum Recommended Battery Capacity – 18 ℃ Completely Cold, Only the Engine Cold Starting Current	1375 CCA * 625 CCA
	Maximum Voltage Drop of Starting Loop	N / A
	Minimum Ambient Temperature without Auxiliary Cold Start	-12 ℃
	Minimum Starting Speed Required without Auxiliary Cold Starting	N / A
	Maximum Allowable Resistance of Starting Loop	0.0012 hms * 0.004 hms

Cooling System	Coolant Capacity – Engine Only.	7.9 litre
	Maximum External Engine Cooling Cycle Resistance	28 kPa
	Maximum Static Height of Coolant Above Crankshaft Centerline of Engine	14 m
	Thermostat Standard Regulating Temperature (Range)	82 – 95 ℃
	Minimum Pressure Cap Pressure	39 kPa
	Maximum Engine Coolant Temperature at Standby / Rated Power	104 / 100 ℃

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Scopes of Supply of DCEC 4BTA3.9-GM47 Marine Auxiliary Engine
Air Intake System	1. Air Intake Manifold	Exhuast System	1. Exhuast Manifold
	2. Air Filter		2. Turbocharger
	3. N / A		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. N / A		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
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Optional Accessories of DCEC 4BTA3.9-GM47 Marine Auxiliary 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	Cooling 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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Committed to providing reliable premium propulsion system and power system for all kinds of ships around the world, SeaMac is a sub-brand of EMAC group that focused on maritime application.
SeaMac’s ranges of products mainly inclduing marine main engine, marine gearbox, marine propellers, marine control lever system, marine auxiliary engine, marine generator set and emergency generator set.
For more information of our marine proplusion and power system products, you are welcome to visit SeaMac homepage: www.seamac.com

Modifiable components of DCEC 4BTA3.9-GM47 Marine Auxiliary Engine
Air Intake System	1. Installation Position of Air Filter	Starting System	1. 12V Starter Motor for 12V Electric System
	2. Upgrade to Heavy-Duty Type Air Fitler		2. Upgrading to Specified Brand and Speicifications of Starter Motor
Exhuast System	1. Can Modify Installation Position and Direction of Turbocharger	Charging System	1. 12V Charging Alternator for 12V Electric System
	2. Water-Cooled Exhuast Manifold		2. Explosion-Proof Charging Alternator
	3. Water-Cooled Turbocharger		3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Fuel System	1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-Hearter	Engine Auiliary Accessories	1. Additional Auxiliary Systems Can Be Added for Special Applications
Engine Shut-Down System	1. 12V Solenoid for 12V Electric System	Cooling System	1. Can Modify Engine Into Keel Cooling System
	2. Explosion-Proof Solenoid		2. N / A
Lubricating System	1. Oil Pan Position	Power Output System	1. Can Modify Size of Flywheel Housing and Flywheel
	2. Number of Dipstick		2. Dual-Ear Flywheel Housing (For Twin-Starter System)
	3. Position of Dipstick Can Choose from 6 Positions		3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type
	4. Can Modify Oil Filter to Be Remote Installation		4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System	1. Can Modify Engine Mouting Bracket
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