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C9.3-AE270 Marine Auxiliary Engine

The Caterpillar C9.3-AE270 marine auxiliary engine is an I-6, 4-Stroke-Cycle-Diesel engine with a 115.0 mm (4.5 in) bore, 149.0 mm (5.8 in) stroke and 9.3 L (567.5 in³) displacement.
The Caterpillar C9.3-AE270 marine auxiliary engine is rated at 1500 RPM and rated at 362 BHP (270 bkW).
Caterpillar C9.3-AE270 marine auxiliary engine complies with U.S. EPA Tier 3/CCNR Stage II/IMO II certifi ed air intake is turbocharged After cooling.
As part of EMAC, Caterpillar Marine Auxiliary also offers high performance propulsion and handling solutions Engine, engine provides electronic control and mechanical, fuel common rail system for customers to choose, we provide full life cycle service for all customers, from design to ship power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from Troubleshooting to Overhaul Technical Support.

Advantages of C9.3-AE270 Marine Auxiliary Engine

  • Configure the engine how you want it, package it yourself.

  •  Compact engine profile with high power density.

  •  Ease of repower with multiple cooling system options: Single circuit keel cooling /Separate ircuit keel cooling / Heat exchanger.

  •  Clean, smooth, and quiet operations.

  • Advanced fuel system provides excellent fuel consumption and low smoke.

  • Proven core engine design with millions of operating hours.

  • Fewer maintenance touchpoints and longer service intervals.

  • Superior response time and acceleration; 12V or 24V electrical system; Gear driven jacket water pump and sea water pump for superior reliability; Maintenance free valve train with hydraulic valve lash adjusters.

  •  No visible smoke; Common rail fuel system enables optimum combustion and low emissions; Reduced combustion noise through advanced electronic control; Closed crankcase ventilation system improves engine room cleanliness.

Technical Specifications

Basic Introduction of C9.3-AE270 Marine Auxiliary Engine

Engine Model:C9.3-AE270
Engine Type:I-6, 4-Stroke-Cycle-Diesel
Displacement:9.3 L
Rated Speed:1500 RPM
Aspiration Method:Turbocharged Aftercooled (TA)
Emission Standard:Tier 3
Bore*Storke:115 mm (4.5 in)*149 mm (5.8 in)
Packing Size(L*W*H):1470.8 * 1060.1 * 1028.6 mm
Weight , Net Dry:1122 kg (2474 lb)
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Engine Model

Rated Power


Fuel system type

C9.3-AE270270 bkW (362 BHP) @ 1500 RPMTurbocharged Aftercooled (TA)Common Rail
C9.3-AE218218 bkW (292 BHP) @ 1500 RPMTurbocharged Aftercooled (TA)Common Rail

General Engine Specifications of CAT C9.3-AE270 Marine Auxiliary Engine

Basic Engine SpecificationsI-6, 4-Stroke-Cycle-DieselGovernorElectronic (A5E2 V2 ECM)
Displacement9.30 L (567.5 in³)Fuel System TypeCommon Rail
Rated Engine Speed1500 RPMLength1470.8 mm (57.9 in)
Height1060.1 mm (47.1 in)Width1028.6 mm (40.5 in)
AspirationTurbocharged-AftercooledWeight, Net Dry (Max)1122 kg (2474)
Bore115 mm (4.5 in)Stroke149 mm (5.8 in)
Rotation (From Flywheel End)CounterclockwiseRated Speed270 bkW (362 BHP) @ 1500 RPM
Emission StandardEPA Tier 3

Standard of Caterpillar C9.3-AE270 Marine Auxiliary Engine

Cooling System1. Gear Driven Jacket PumpFuel System1. Common Rail Fuel System
2. Corrosion-Resistant Seawater Aftercooler2. Electric Fuel Priming Pump
3. Fuel Cooler3. N/A
Universal1. Vibration Damper and GuardLubrication System1. Closed Crankcase Ventilation System
2. Self-Tensioning Multi-V-Belt Drive2. Integrated Engine Oil Cooler
install the systemFront and Rear Engine Mounting BracketsStarting System12 V or 24 V Starter Motor
exhaust systemWater-Cooled Turbocharger and Exhaust Manifold

System of Caterpillar C9.3-AE270 Marine Auxiliary Engine

Air SystemCombustion Air Inlet System
Intake Combustion Air Flow5.3 m³/min (71 bkW)
Intake Combustion Air Flow187 cfm (71 bkW)
Intake Combustion Air Temperature Up to50 °C (122 °F)
Engine Room Ventilation Air
Heat Rejection to Atmosphere8.0 kW (71 bkW)
Heat Rejection to Atmosphere455 BTU/min (95 BHP)
Fuel SystemFuel Rate237 g/bkW-hr (63.4 gal/hr)
Fuel Rate16.9 kg/hr (63.4 gal/hr)
Fuel Flow Transfer Pump4.1 L/min (71 bkW)
Fuel Pressure Static Head± 2.8 m (± 9.1 ft)
Fuel Supply Line Restriction (Max)10 kPa (2.9 in Hg) (1.45 PSI)
Fuel Temperature Transfer Pump in (Max)60 °C (140°F)
Fuel Return Line Restriction (Max)10 kPa (2.9 in Hg) (1.45 PSI)
Fuel Supply / Return Connections11 / 16 in O ring Face Seal (ORFS)
Diesel Fuel GradeISO-F-DMX/ISO-F-DMA/ISO
Exhaust SystemExhaust Gas Flow (Total)6.60 kg/min
Exhaust Stack Temperature455 °C
Exhaust Stack Temperature851 °F
Engine Exhaust Connection63 mm (2.5 in) ID, 6 x 9 mm (0.35 in) Holes on 88.9 mm (3.5 in) PCD
Max Allowable System Backpressure15 kPa (60 in H2O)
Lube SystemSump TypeIsolated
Sump Capacity (Max)11 L (5.55 gal)
Sump Capacity (Min)9 L (4.62 gal)
Oil Change Interval500 Hr
Max Installation Angle (Any Direction)25 Degrees
Max Continuous Operation Angle (Any Direction)25 Degrees
Max Intermittent Operation Angle (Any Direction)CI-4 10W30 or 15W40
Starting SystemElectrical Starting Motor24 VDC, 12 VDC
Cold Starting800 CCA [at -15 °C (5 °F) Ambient Temperature]

Standard of Caterpillar C9.3-AE270 Marine Auxiliary Engine

Fuel System1. Fuel Transfer PumpExhuast System1. Exhuast Manifold
2. High-Pressure Fuel Pump2. Turbocharger
3. Fuel Filter3. Exhuast Elbow
Air Intake System1. Air Intake ManifoldStarting System1. Starter Motor
2. N/A2. Starter Rely
Cooling System1. Water PumpPower Output System1. Flywheel
2. Engine Fan2. Standard Flywheel Housing
3. Standard Radiator3. N/A
Lubricating System1. Oil PumpCharging System1. Charging Alternator
2. Oil Filter2. N/A
Engine Shut-Down System1. Engine Fuel Shut-Off SolenoidrEngine Mounting System1. Engine Mouting Bracket
Engine Auiliary Accessories1. Air Compressor

Optional Accessories of Caterpillar C9.3-AE270 Marine Auxiliary Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Shut-Off Valve2. Flame Trap
3. Air Filter3. Spark Arrestor Type Muffler & Bellows
4. Air Intake Pre-Filter4. Dpf System
5. Air Filter Alarm System5. N/A
Fuel System1. Coarse FilterLubricating System1. Oil Pre-Heater
2. Fuel Pre-Heater2. N/A
Starting System1. Manual Magnetic DC ContactorCooling System1. Silent Type Radiator
2. Dual Ears Flywheel Housing2. Plateau Radiator
3. Spring Starter Motor3. Salt-Spray Resistant Radiator
4. Air Starter Motor4. Coolant Pre-Heater
5. Hydraulic Starter Motor5. Jacket Water Heater
6. Manual Magnetic DC Contactor6. N/A
Engine Auiliary Accessories1. Hydraulic Oil PumpControl System1. Can Add Engine Monitoring System, Contro System with Wiring Harness.
2. Air Conditioner Compressor2. Can Add Self-Protection System That Integrated with Alarm System.
Power Output System1. ClutchEngine Mounting System1. Shock Absorber Pad

Modifiable Components of Caterpillar C9.3-AE270 Marine Auxiliary Engine

Air Intake System1. Installation Position of Air FilterCharging System1. 12 V Charging Alternator for 12 V Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Explosion-Proof Charging Alternator
3. N/A3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Exhuast System1. Water-Cooled Exhuast ManifoldLubricating System1. Oil Pan Position
2. Water-Cooled Turbocharger2. Number of Dipstick
3. Can Modify Installation Position and Direction of Turbocharger3. Position of Dipstick Can Choose From 6 Positions
4. N/A4. Can Modify Oil Filter to Be Remote Installation
Engine Shut-Down System1. 12 V Solenoid for 12 V Electric SystemStarting System1. Upgrading to Specified Brand and Speicifications of Starter Motor
2. Explosion-Proof Solenoid2. 12 V Starter Motor for 12 V Electric System
Fuel System1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. All of Auxiliary System Can Choose Specified Brands and Specifications
2. N/A2. Additional Auxiliary Systems Can Be Added for Special Applications
Cooling System1. Can Modify Engine Fan Into Blower Fan or Suction FanPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Can Modify Central Position of Engine Cooling Fan2. Dual-Ear Flywheel Housing (for Twin-Starter System)
3. Can Choose Type of Engine Fan From Mechanical Type or Electric Type3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type
4. N/A4. 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 Referenece, All Data Might Change Without Notices or Update, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

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