A3 ECU


 • CAN J1939 data link
 • Waterproof connectors
 • Maintenance-free
 • Backup ECU for redundant governing 
 • Updated A4 ECU for 6000 bkW

Electronic Advantages:


 • Load feedback
 • Programmable droop
 • Adjustable gain
 • Adjustable fuel/air ratio control
 • Histograms of engine operation
 • Cat Messenger display presents diagnostics and other engine parameters

Data Advantages through J1939 Link:


 • Engine speed
 • Boost pressure
 • Throttle position
 • Fuel consumption rate
 • Inlet manifold temperature
 • Diagnostic codes and events
 • Configuration
 • Desired engine speed
 • Battery voltage
 • Engine load
 • Lifetime totals — engine hours, fuel burned, idle fuel, idle hours
 • Trip totals — average fuel rate, idle fuel, idle hours, engine hours, fuel burned, trip reset

Customer Interface Panel


 • Interfaces with standard Cat® Marine Monitoring System (PLC in Price List)
 • Provides visual indication of ECU functionality
 • Accepts 4 — 20 mA or PWM remote throttle speed input
 • Marine alarm and protection

Electronic Unit Injectors


 • “Drop-in” installation
 • No threaded fuel connections
 • High pressure inside injector only
 • Does not require double wall fuel lines or leak collection device
 • Injector synchronization not required

Power Rating
Power Range 6169-8046 bhp (4600-6000 bkW)
Engine Specifications
Speed Range 900-1000 rpm
Emissions IMO II
Aspiration TTA
Bore 280 mm (11 in)
Stroke 300 mm (11.8 in)
Displacement 296 l (18062 inu00b3)
Rotation from Flywheel End Counterclockwise or clockwise
Configuration Vee 16, 4-Stroke-Cycle Diesel
Dimensions & Weights
Minimum Dry Weight 28500 kg (62832 lb)
Minimum Length 5690 mm (224 in)
Maximum Length 5690 mm (224 in)
Minimum Height 3403 mm (134 in)
Maximum Height 3403 mm (134 in)
Minimum Width 2032 mm (80 in)
Maximum Width 2032 mm (80 in)

Standard Equipment

  • Air Inlet System
    • Aftercooler, fresh water, corrosion resistant coated (air side)
    • Air inlet shutoff
    • Breather, crankcase, top-mounted
    • Turbocharger, engine oil lubricated
  • Control System
    • Dual Caterpillar A-III Electronic Engine Control Modules with Electronic Unit Injector Fuel System
    • Rigid Wiring Harness (10 amp 24volt power required to drive Electronic Engine Control Modules)
  • Cooling System
    • Engine coolant water drains
  • Exhaust System
    • Dry, gas tight, exhaust manifold
  • Fuel System
    • Distillate fuel (requires viscosity ranging from 1.4 cSt to 20 cSt at 38 degrees C)
    • Fuel transfer pump (mounted on left hand side)
    • Duplex fuel filters
    • Electronically Controlled Unit Injectors
  • Lube Systems
    • Centrifugal oil filters with single shutoff. Service side engine mounted on cylinder block inspection covers. Includes installed oil lines and single shutoff valve. Filters centrifuge bypass oil from the main lubricating oil pump. Can be serviced with the engine running.
    • Oil filler and dipstick
    • Valve, oil pressure regulating
    • Valves, crankcase explosion relief
  • General
    • Paint, Caterpillar yellow
    • Pumps, gear driven: fuel, oil, jacket water, aftercooler/oil cooler water

Optional Equipment

  • Engine Application/Design Control
    • Crankshaft Deflection Marks
    • Extra Mounting Feet
  • Engine Package Description
    • Front Auxiliary Drive
    • Stub Shaft Certification
  • Air Inlet System
    • Air Cleaners
    • Air Cleaner options
  • Cooling System
    • Auxiliary Water Pump
    • Jacket Water Heaters
    • Heat Recovery System
    • Heat Recovery Thermostats
    • De-Aerator
    • Connections for Driven Equipment
    • Cooling System Connection Groups
  • Exhaust System
    • Outlet Expander
    • Flexible Exhaust Fittings
    • Weld Flange
  • Fuel System
    • Fuel Priming Pump
    • Duplex Primary Fuel Strainer
    • Fuel Systems Connections
  • Lube System
    • Oil Pan Drain Valve
    • Lube Connections
    • Lube Oil Heater
  • Marine Society Requirements
    • Spray Shielding
  • Protection System
    • Monitoring System
    • Turbocharger Speed Sensor
    • Cylinder Pressure Relief Valve
    • Oil Mist Detector
  • Spare Parts Kits
    • Intake and Air System
    • Basic Engine
    • Cylinder Head
    • Fuel System
    • Cooling System
    • Instrumentation
    • Cylinder Valve Kits
  • Starting System
    • Boost Control Valve, Pressure Reducing Valve
  • Engine Testing
    • Basic System Testing
    • Special Witness Test
    • Customer Selected Test Points
    • Marine Limit Line Test
    • Propeller Demand Curve Test
  • Service Tools/Ship Protection/Factor Support
    • Commissioning
    • Service Tools
    • Shipping Protection – Export Boxing
    • AID Emblem
    • Storage Preservation

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