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DCEC QSL8.9-M313 Marine Engine

DCEC QSL8.9-M313 marine main engine is a 6-cylinders in line, 8.9 liters four-strokes engine with 114mm bore and 145mm stroke.

Equipped with Electrically Control High-pressure Common Rail, engine comes with turbocharger.

The prime power at 2200RPM of DCEC QSL8.9-M313 marine main engine is 313HP.

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 QSL8.9-M313 Marine Engine

  • CMS develops and optimizes the integration of key components for domestic customers, and provides customized secondary development for them, while maintaining the reliability of original products while taking into account the characteristics of domestic customers.

  • The traditional hose is replaced by an integrated oil and water pipeline to eliminate the risk of leakage.

  • Enhanced cooling and lubrication functions, effectively prolonging the service life of the engine.

  • The high pressure common rail (HPCR) system ensures fast throttle response at different engine speeds, better power and fuel economy, and low noise.

  • Use REPTO to enhance the remote unit.

  • Well-controlled cold start performance, easy to start in high mountain areas.

Technical Specifications

Engine Model:QSL8.9-M313
Engine Type:6 Cylinders, in Line
Displacement:8.9 L
Rated Speed:2200 RPM
Rated Power:230 kW @ 2200 RPM
Peak Torque:998 N.m @ 2200 RPM
Aspiration Method:Turbocharged
Emission Standard:N / A
Bore*Storke:114 mm * 145 mm
Packing Size(L*W*H):N / A
Wet Weight:877 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C



Coming Soon

Engine Model

Rated Power

Peak Torque

Fuel System


QSL8.9-M313230 kw @ 2200 RPM998 N.m @ 2200 RPMHPCRTurbocharged

General Infomation of DCEC QSL8.9-M313 Marine Main Engine

Engine ModelQSL8.9-M313Displacement8.9 L
Bore*Stroke114 * 145 mmAspirationTurbocharged
Cylinders6Fuel SystemHPCR
Rated Speed:2200 RPMRated Power308 BHP
110% Power339 BHPRated Torque998 N.m
Curve No.M-FR96910

Installation Data of DCEC QSL8.9-M313 Marine Main Engine

Compression Ratio16.6 : 1 mm
Rated Power Production Tolerance± 3 %
Peak Engine Torque @ 1500  RPM1119 N.m
Brake Mean Effective Pressure1411 kPa
Indicated Mean Effective Pressure1580 kPa
Maximum Allowable Engine Speed2440 RPM
Piston Speed10.6 m / sec
Firing Order1-5-3-6-2-4
Weight – Engine Only – Average877 kg
Weight – Engine With Heat Exchanger System – Average1001 kg

Governor Settings of DCEC QSL8.9-M313 Marine Main Engine

Default Droop Value7%
Maximum Droop Allowed16%
High Speed Governor Break Point2280 RPM
Minimum Idle Speed Setting750 RPM
Normal Idle Speed Variation±50 RPM
Minimum-High Idle Speed Range2280 RPM
Maximum-High Idle Speed Range2400 RPM

Performance Curve DCEC Cummins QSL8.9-M313 Marine Main Engine.

System Technical Data of DCEC QSL8.9-M313 Marine Drive Engine

Exhaust SystemExhaust Gas Flow876 l / sec
Exhaust Gas Temperature (Turbine Out)505 °C
Max. Exhaust Pressure10 kPa
EmissionsNOx (Oxides of Nitrogen)4.85 g / kwhr
HC (Hydrocarbons)0.25 g / kwhr
CO (Carbon Monoxide)1.50 g / kwhr
PM (Particulate Matter)0.10 g / kwhr
Fuel SystemFuel Consumption at Rated Speed62.5 l / hr
Approximate Fuel Flow to Pump181 l / hr
Maximum Allowable Fuel Supply to Pump Temperature70
Approximate Fuel Flow Return to Tank119 l / hr
Maximum Allowable Restriction to Fuel Pump-Clean Filter16 kPa
Maximum Allowable Restriction to Fuel Pump-Dirty Filter30 kPa
LubricationSystemMax. Allowable Oil Temperature (Sump)124 °C
Oil Pan Capacity (OP9337)-Low / High18.9 L
Min. Oil Pressure at Idle Speed69 kPa
Maximum Operational Angularity of Oil Pan35 degree
Air SystemIntake Manifold Pressure211 kPa
Intake Air Flow336 l / sec
Heat Rejection to Ambient23 kPa
Cooling SystemSea Water Pump flow ( Discharge Restriction Pressure 40 kPa )11.4 m³ / hr
Pressure Cap Rating (With Heat Exchanger Option)48 kPa
Max. Pressure Drop Across Any External Cooling System Circuit34 kPa
Coolant Flow to Engine Heat Exchanger322 l / min
Standard Thermostat Operating Range (Start to Open)71
Standard Thermostat Operating Range (Full Open)83
Heat Rejection to Engine Coolant162 kW
Coolant Capacity-Engine Only11 L
Electrical and Start SystemVoltage24 V
Cold Soak at -18°C (0°F) -Cold Cranking Amperes Rating750 CCA
Maximum Allowable Resistance of Starting Circuit2O hms
Min. Start Temperature without Cold Starting Aid – 12 °C
Noise and Vibration1 m Sound Pressure Level – GB / T1859< 93 dB

Scopes of Supply of DCEC QSL8.9-M313 Marine Main Engine

Air Intake System1. Air Intake ManifoldExhuast System1. Exhuast Manifold
2. Air Filter2. Turbocharger
3. N / A3. Exhuast Elbow
Starting System1. Starter MotorCharging System1. Charging Alternator
2. Starter Rely2. N / A
Lubricating System1. Oil PumpFuel System1. Fuel Transfer Pump
2. Oil Filter2. High-Pressure Fuel Pump
3. N / A3. Machanical Governor
4. N / A4. Fuel Filter
Engine Shut-Down System1. Engine Fuel Shut-Off SolenoidPower Output System1. Flywheel
2. N / A2. Standard Flywheel Housing

Optional Accessories of DCEC DCEC QSL8.9-M313 Marine Main Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Pre-Filter2. Flame Trap
3. Air Filter Alarm System3. Spark Arrestor Type Muffler & Bellows
4. N / A4. DPF System
Fuel System1. Coarse FilterEngine Auiliary Accessories1. Hydraulic Oil Pump
2. Fuel Pre-Heater2. Hydraulic Cluch
Starting System1. Manual Magnetic DC ContactorCooling System1. Engine Monitor
2. Dual Ears Flywheel Housing2. Engine Protection System With Alarm System
3. Spring Starter Motor3. Machanical Engine Control Lever Syste
4. Air Starter Motor4. Electric Engine Control Lever System
5. Hydraulic Starter Motor5. N / A
6. Manual Magnetic DC Contactor6. N / A
Power Output System1. Gear Reduction GearboxCooling System1. Coolant Pre-Heater
2. Reverse Gear Box2. Jacket Water Heater
Lubricating System1. Oil Pre-HeaterEngine Mounting System1. Shock Absorber Pad

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:

Modifiable components of DCEC QSL8.9-M313 Marine Main  Engine

Air Intake System1. Installation Position of Air FilterStarting System1. 12V Starter Motor for 12V Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Upgrading to Specified Brand and Speicifications of Starter Motor
Exhuast System1. Can Modify Installation Position and Direction of TurbochargerCharging System1. 12V Charging Alternator for 12V Electric System
2. Water-Cooled Exhuast Manifold2. Explosion-Proof Charging Alternator
3. Water-Cooled Turbocharger3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Fuel System1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. Additional Auxiliary Systems Can Be Added for Special Applications
Engine Shut-Down System1. 12V Solenoid for 12V Electric SystemCooling System1. Can Modify Engine Into Keel Cooling System
2. Explosion-Proof Solenoid2. N / A
Lubricating System1. Oil Pan PositionPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Number of Dipstick2. Dual-Ear Flywheel Housing (For Twin-Starter System)
3. Position of Dipstick Can Choose from 6 Positions3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type
4. Can Modify Oil Filter to Be Remote Installation4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System1. Can Modify Engine Mouting Bracket

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.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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