DCEC 6BT5.9-M120 Marine Engine

DCEC 6BT5.9-M120 marine main engine is a 6-cylinders in line, 5.9 liters four-strokes engine with 102mm bore and 120mm stroke.
Equipped with Weifu AD fuel pump and RSV governor, engine comes with turbocharger.
The prime power at 2200RPM of DCEC 6BT5.9-M120 marine main engine is 120HP.
Based on standard DCEC marine main engines, SeaMac provides both heat exchanger cooling and keel cooling marine main engines, we also provide complete propulsion system that including marine engine, gearbox, shaft, propeller as complete power system. SeaMac provides full life cycle services for all our 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.
All of DCEC marine main 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 6BT5.9-M120 Marine Engine

Leading design and excellent manufacturing technology make the engine more reliable and durable, suitable for high-strength, heavy-duty work under severe working conditions.
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.
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.
Synchronized with the advanced design and sophisticated manufacturing of CMS in the United States, it is suitable for harsh working conditions and has strong high-intensity and heavy-duty operating capabilities.

Technical Specifications

Engine Model:	6BT5.9-M120
Engine Type:	6 Cylinders, in Line
Displacement:	5.9 L
Rated Speed:	2200 RPM
Rated Power:	120HP @ 2200 RPM
Peak Torque:	430N.m @ 1600 RPM
Classification:	N/A
Aspiration Method:	Turbocharged
Emission Standard:	N / A
*BoreStorke:**	102 mm * 120 mm
*Packing Size(LWH):*	1020 mm * 601 mm * 1201 mm
Wet Weight:	432 kg
Lead Time:	15-30 Working Days
Payment Terms:	T/T ,L/C

Coming Soon

Engine Model	Peak Torque	Rated Power	Fuel System	Aspiration
6BT5.9-M120	430 N.m @ 1600 RPM	120 Hp @ 2200 RPM	Weifu AD Pump / RSV Mechanical Governor	Turbocharged
6BTA5.9-M150	616 N.m @ 1400 RPM	150 Hp @ 2200 RPM	Weifu AD Pump / RSV Mechanical Governor	Turbocharged & Water-Air Intercooler
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General Infomation of DCEC 6BT5.9-M120 Marine Main Engine
Engine Model	6BT5.9 – M120	Displacement	5.9 L
*Bore Stroke**	102 mm * 120 mm	Aspiration	Turbocharged
Cylinders	6 Cylinders, in Line	Speed Control	8%
Fuel System	Weifu AD Pump / RSV Mechanical Governor	Rated Power	120 Hp @ 2200 RPM
Peak Torque	430 N.m @ 1600 RPM	CPL Code	834 – 02
Dry Weight	432 kg

Installation Data of DCEC 6BT5.9-M120 Marine Main Engine
Moment of Inertia of Rotating Components		0.25 kg·m²
Center of Gravity from Front Face of Block		TBD
Center of Gravity Above Crankshaft Centerline		140 mm
Maximum (Static) Bending Moment at Front Support Mounting Surface		435 N.m
Maximum (Static) Bending Moment at Side Pad Mounting Surface		TBD
Maximum (Static) Bending Moment at Rear Face of Block		1356 N.m
Moment of Inertia of Complete Engine – Roll Axis		16.5 kg.m²
Moment of Inertia of Complete Engine – Pitch Axis		41.1 kg.m²
Maximum (Static) Bending Moment at Rear Face of Block		35.4 kg.m²

Fuel System of DCEC 6BT5.9-M120 Marine Main Engine
Maximum Fuel Flow on the Supply Side of the Fuel Pump		190 litre / hr
Maximum Fuel Intake Restriction – with Clean Fuel Filter		102 mmHg
Maximum Fuel Intake Restriction – with Dirty Fuel Filter		203 mmHg
Maximum Fuel Drain Restriction – with Check Valves		N / A
Maximum Fuel Drain Restriction – less Check Valves		510 mmHg
Maximum Fuel Inlet Temperature		71 ℃
Minimum Fuel Tank Air Venting Capability Required at 6 in. H2O Back Pressure		340 litre / hr
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System Technical Data of DCEC 6BT5.9-M120 Marine Main Engine

Exhaust System	Maximum Back Pressure	76 mmHg
	Exhaust Pipe Size Normally Acceptable	75 mm
	Maximum Static Supported Weight at the Turbocharger Outlet Flange	13.5 kg
	Exhaust Manifold Insulation Acceptable	N / A
	Turbocharger Insulation Acceptable	N / A

Air Intake System	Maximum Intake Air Restriction with Heavy Duty Air Cleaner – Clean Element	381 mmH2O
	Maximum Intake Air Restriction with Heavy Duty Air Cleaner – Dirty Element	635 mmH2O
	Minimum Dirt Holding Capacity with Heavy Duty Air Cleaner	53 g / litre / sec
	Maximum Temperature Rise from Ambient to the Inlet of the Turbocharger	17 ℃
	Maximum Pressure Drop from the Turbocharger Outlet to the Intake Manifold	TBD

LubricationSystem	Normal Operating Oil Pressure Range	200 – 450 kPa
	Maximum Lube Oil Flow for Engine Accessories	4 litre / min.
	Maximum Sump Oil Temperature	121 ℃
	Minimum Engine Protection Oil Pressure – At Rated Speed and Load	276 kPa
	Minimum Engine Protection Oil Pressure – 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	16.3 litre
	By-Pass Filtration Required	N / A
	Angularity of Standard Oil Pan – Front Down	35 °
	Angularity of Standard Oil Pan – Front Up	35 °
	Angularity of Standard Oil Pan – Side to Side	35 °

Cool Start System	Minimum Battery Capacity(Below – 18 ℃)	12 V ; 24 V
	Minimum Battery Capacity(Below – 18 ℃) – Engine Cold Starting Current	950 CCA ; 475 CCA
	Minimum Battery Capacity(Below – 18 ℃) – Engine Reserve Capacity	260 * 130 min
	Minimum Environmental Temperature When Cold Start Unassisted	– 12 ℃
	Minimum Engine Speed When Cold Start Unassisted	125 rpm

Cooling System	Coolant Capacity – Engine Only	9.9 litre
	Maximum Engine Cooling Circuit External Resistance	34 kPa
	Maximum Sump Oil Temperature	TBD
	Minimum Engine Protection Oil Pressure-At Rated Speed and Load	TBD
	Standard (Modulating) Thermostat Range	82 – 93 ℃
	Maximum Block Coolant Pressure with Closed Thermostat and No Pressure Cap	276 kPa
	Minimum Pressure Cap	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 / min
	Maximum Initial Fill Time	5 min
	Minimum Coolant Expansion Space of System Capacity	6 %
	Maximum Deaeration Time	25 min.
	Minimum Drawdown of Total System Capacity	11 %
	Fan-On Engine Coolant Outlet Temperature	93 ℃
	Fan-On Engine Coolant Outlet Temperature	85 ℃
	Shutter Opening Intake Manifold Air Temperature	N / A
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Scopes of Supply of DCEC 6BT5.9-M120 Marine Main Engine
Scopes of Supply of DCEC 6BT5.9-M120 Marine Main 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 DCEC 6BT5.9-M120 Marine Main 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 6BT5.9-M120 Marine Main 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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