DCEC 6CT8.3-GM129 Auxiliary Engine
DCEC 6CT8.3-GM129 marine auxiliary engine is a 6-cylinders in line, 8.3 liters four-strokes engine with 114mm bore and 135mm stroke.
Equipped with BYC PB fuel pump and GAC electronic governor, engine comes with turbocharger.
The prime power for generator set 1800RPM of DCEC 6CT8.3-GM129 marine auxiliary engine is 129kW.
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 6CT8.3-GM129 Auxiliary Engine
Advanced design, exquisite manufacturing technology, reliable and durable, suitable for high-strength and heavy-duty operations under severe working conditions.
Using high-pressure fuel pump, combustion is more complete under high fuel injection pressure, less energy loss, strong power, strong fuel adaptability, and lower emissions.
Adopt Holset supercharger with integral wastegate valve, low speed responsiveness and strong power.
Integral cylinder design, the number of parts is about 25% less than similar products, the failure rate is lower, and the maintenance is more convenient.
The cylinder liner adopts a platform mesh honing design and a corrosion-resistant high-nickel cast iron piston, which greatly reduces oil loss, enhances durability, and has a longer service life.
Technical Specifications
| Engine Model: | 6CT8.3-GM129 |
| Engine Type: | 6 Cylinders |
| Displacement: | 8.3 L |
| Rated Speed: | 1800 RPM |
| Rated Power: | 129 kW @ 1800 RPM |
| Peak Torque: | 222 g / kW.h @ 1800 RPM |
| Classification: | N/A |
| Aspiration Method: | Turbocharged |
| Emission Standard: | N / A |
| Bore*Storke: | 114 mm * 135 mm |
| Packing Size(L*W*H): | 1494 mm * 796 mm * 1228 mm |
| Wet Weight: | 637 kg |
| Lead Time: | 15-30 Working Days |
| Payment Terms: | T/T ,L/C |
Engine Model | Peak Torque | Rated Power | Fuel System | Aspiration |
| 6CT8.3-GM115 | 212 g / kW.h @ 1500 RPM | 115 kW @ 1500 RPM | BYC PB Pump / GAC Electronic Governor | Turbocharged |
| 6CT8.3-GM129 | 222 g / kW.h @ 1800 RPM | 129 kW @ 1800 RPM | BYC PB Pump / GAC 24 V Electronic Governor | Turbocharged |
| 6CTA8.3-GM155 | 214 g / kW.h @ 1500 RPM | 155 kW @ 1500 RPM | BYC PB Pump / GAC Electronic Governor | Turbocharged & Water-Air Intercooler |
| 6CTA8.3-GM175 | 218 g / kW.h @ 1800 RPM | 175 kW @ 1800 RPM | BYC P7100 Pump / GAC 24 V Electronic Governor | Turbocharged & Water-Air Intercooler |
| ——END—— | ||||
General Infomation of DCEC 6CT8.3-GM129 Marine Auxiliary Engine | ||||
| Engine Model | 6CT8.3 – GM129 | Displacement | 8.3 L | |
| Bore * Stroke | 114 mm * 135 mm | Aspiration | Turbocharged | |
| Cylinders | 6 Cylinders, in Line | Fuel System | BYC PB Pump / GAC 24 V Electronic Governor | |
| Governor Regulation | ≤ 5 % | Rated Power | 129 kW @ 1800 RPM | |
| Standby Power | 142 kW @ 1800 RPM | Dry Weight | 637 kg | |
| Instantaneous Inertia of Rotating Parts | 0.37 kg·m² | Low Idle Speed | 950 – 1050 RPM | |
| Distance from Center of Gravity to Center Line of Crankshaft (Above Crankshaft) |
| Distance Between Center of Gravity and Rear End Face of Cylinder Block | 541 mm | |
| Compression Ratio | 17.3 : 1 | Piston Speed | 8.1 m / sec | |
| Firing Order | 1 – 5 – 3 – 6 – 2 – 4 | |||
Installation Data of DCEC 6CT8.3-GM129 Marine Auxiliary Engine | ||||
| Maximum (Static) Bending Moment at Front Support Mounting Surface | 495 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 | 23.6 kg.m² | |||
| Moment of Inertia of Complete Engine – Pitch Axis | 65.2 kg.m² | |||
| Moment of Inertia of Complete Engine – Yaw Axis | 55.9 kg.m² | |||
Fuel System of DCEC 6CT8.3-GM129 Marine Auxiliary Engine | ||||
| Maximum Fuel Flow of Oil Pump | 202 litre / hr | |||
| 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 | 254 mmHg | |||
| ——END—— | ||||
System Technical Data of DCEC 6CT8.3-GM129 Marine Auxiliary Engine | ||
| Exhaust System | Maximum Exhaust Back Pressure | 75 mmHg |
| Exhaust Gas Flow | N / A | |
| Exhaust Gas Temperature | 515 ℃ | |
| Exhaust Heat Loss Work | N / A | |
| Recommended Exhaust Pipe Diameter | 75 mm | |
| Maximum Static Support Weight of Turbocharger Outlet Flange | 22.7 kg | |
| 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 | 53 g / litre / sec | |
| 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 | 180 litre / sec | |
| Heat Rejection to Ambient | 30 kW | |
| Minimum Ambient Temperature for Cold Starting | -12 ℃ | |
| LubricationSystem | Normal Operating Oil Pressure Range | 276 – 414 kPa |
| Maximum Lube Oil Flow for Engine Accessories | 7.6 litre / min | |
| Maximum Sump Oil Temperature | 121 ℃ | |
| Minimum Oil Pressure—At Low Idle | 103 kPa | |
| Minimum Oil Pressure – Operating Speed | 276 kPa | |
| Minimum Required Lube System Capacity – Sump Plus Filters | 19 litre | |
| By-Pass Filtration Required | Yes | |
| Sump Inclination Angle—Front Up | 45 ° | |
| Sump Inclination Angle—Front Down | 45 ° | |
| Sump Inclination Angle—Side to Side | 45 ° | |
| Cool Start System | Minimum Recommended Battery Capacity | 12 V 24 V |
| – 18 ℃ Completely Cold, only the Engine Cold Starting Current | 1500 CCA * 750 CCA | |
| Engine Only – Reserve Capacity | 360 – 180 minutes | |
| Maximum Voltage Drop of Starting Loop | N / A | |
| Minimum Ambient Temperature without Auxiliary Cold Start | -12 ℃ | |
| Minimum Starting Speed Required without Auxiliary Cold Starting | 120 RPM | |
| Maximum Allowable Resistance of Starting Loop | 0.0012 * 0.002 Ohms | |
| Cooling System | Coolant Capacity – Engine Only | 10 litre |
| Minimum Water Inlet Pressure of the Pump (without Pressure Cover, Thermostat Open) | N / A | |
| Maximum Static Height of Coolant above Crankshaft Centerline of Engine | N / A | |
| Thermostat Standard Regulating Temperature (Range) | 82 – 95 ℃ | |
| Maximum Cylinder Block Coolant Pressure (without Pressure Cap, Thermostat Closed) | 103 kPa | |
| Minimum Pressure Cap Pressure | 69 kPa | |
| Maximum Engine Coolant Temperature | 100 ℃ | |
| Minimum Coolant Temperature | 79.4 ℃ | |
| Minimum Coolant Expansion Volume Relative to System Capacity | 5 % | |
| Heat Rejection to Coolant | 73 kW | |
| Engine Coolant Flow – 1psi Engine External Cooling Cycle Resistance | 240 litre / min | |
| 5psi Engine External Cooling Cycle Resistance | 210 litre / min | |
| Maximum External Engine Cooling Cycle Resistance | 35 kPa | |
| Sea Water Pump Flow (10 psi Sea Water Pump End Pressure Drop) | 170 litre / min | |
| Aximum Beaeration Time | 25 min | |
| Minimum Coolant Water Loss Volume Relative to Total System Capacity | 0.11 % | |
| Outlet Temperature of Coolant When the Clutch Fan is Running | 93 ℃ | |
| ——END—— | ||
Scopes of Supply of DCEC 6CT8.3-GM129 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 | |
| 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. N / A | 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 | |||
| ——END—— | ||||
Optional Accessories of DCEC 6CT8.3-GM129 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 | |
| 2. Fuel Pre-Heater | 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 | |
| 2. Reverse Gear Box | 2. Jacket Water Heater | |||
| Lubricating System | 1. Oil Pre-Heater | Engine Mounting System | 1. Shock Absorber Pad | |
| ——END—— | ||||
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 6CT8.3-GM129 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 | |||
| ——END—— | ||||
Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.
Engine Sale Manual
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Installation Manual
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