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Cat® C4.4 ACERT Marine Generator Set Specifications
Minimum Rating 58R ekW (50 Hz), 51R ekW (60 Hz)
Minimum Rating 58R ekW (50 Hz), 51R ekW (60 Hz)
Maximum Rating 88R ekW (50 Hz), 105R ekW (60 Hz)
Maximum Rating 88R ekW (50 Hz), 105R ekW (60 Hz)

Generator Set Specifications

Minimum Rating
58R ekW (50 Hz), 51R ekW (60 Hz)
Minimum Rating
58R ekW (50 Hz), 51R ekW (60 Hz)
Maximum Rating
88R ekW (50 Hz), 105R ekW (60 Hz)
Maximum Rating
88R ekW (50 Hz), 105R ekW (60 Hz)
Frequency
50 Hz or 60 Hz
Frequency
50 Hz or 60 Hz
Speed
1500 rpm or 1800 rpm
Speed
1500 rpm or 1800 rpm

Engine Specifications

Aspiration
TA
Aspiration
TA
Bore
4.13 in
Bore
4.13 in
Stroke
5.0 in
Stroke
5 in
Displacement
269.0 in3
Displacement
269 in³
Governor Type
Electronic
Governor Type
Electronic
Engine Model
I-4, 4-Stroke-Cycle-Diesel
Engine Model
I-4, 4-Stroke-Cycle-Diesel

Generator Set Configurations

Emissions/Fuel Strategy
U.S. EPA Tier 3 / CCNR Stage 2
Emissions/Fuel Strategy
U.S. EPA Tier 3 / CCNR Stage 2

Generator Set Dimensions

Weight
2518-2844 lb (1142 - 1290 kg)
Length
66.9-69.6 in (1699-1769 mm), 80.2R in (2037R mm)
Width
37.6 inches (radiator - 38.8 inches)
Height
2518-2844 lb (1141-1290 kg), 3389R lb (1537R kg)

Generator Specifications

Excitation
AREP
Pitch
2/3
Number of Leads
12-lead reconnectable
Insulation
Class H
IP Rating
IP23
Voltage Regulator
±0.5%
  • Air Inlet System
    • Open Crankcase Ventilation (OCV) system
    • Turbocharger, jacket water cooled
    • Integrated coolant lines into manifold utilizing EGR circuit
  • Cooling System
    • Integrated heat exchanger and aftercooler
    • Compact design integral coolant passages
    • Thermostat and housing
    • Jacket Water Heater 120/240V option
    • Auxiliary seawater pump, gear driven
    • Engine mounted heat exchanger, removable tubeBundle (for sea water) (heat exchanger engines only)
    • Engine oil cooler
    • Auxiliary sea water lines
    • Keel cooling
  • Exhaust System
    • Dry insulated turbocharger
    • Water-cooled exhaust manifolds
    • 102 mm (4 in) round flanged outlet
    • Dry Elbow/Bellows/Flange options
  • Fuel System
    • Common Rail Fuel System
    • Simplex and Duplex Fuel options
    • Flexible fuel line option
    • Fuel transfer pump, gear driven
  • Generator
    • 12 lead reconnectable
    • 3 phase all models
    • Brushless
    • Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
    • 2/3 pitch
    • Broad voltage band
    • IP23 water protection
    • Solid state voltage regulator w/ integral voltage adjustment
    • Class H insulation
    • Generator winding temperature rise meets marine society requirements.
  • Governing System
    • Electronic governor
    • Electronic
  • Lube System
    • Lubricating oil
    • Oil filter, RH Service
    • Simplex and Duplex options
    • Crankcase breather
    • Oil filler, in valve cover and timing case (option)
    • Oil level gauge, RH service
    • Oil pan
    • Oil pan drain, RH
    • Engine oil pump (gear driven)
  • Mounting System
    • Formed C-channel rails
    • Anti vibration isolators between base and engine-generator
  • Control System
    • Panels available in RH, LH, and rear configurations with a remote mount option
    • Electronic diagnostics and fault logging
    • Electronic governor
    • Electronic Control Module (ECM)
    • SAE J1939 data link Ratings Only
    • Electronic fuel/air ratio control
  • Flywheels & Flywheel Housings
    • Flywheel Housing, SAE No. 3
    • Flywheel, 126 teeth
    • SAE standard rotation
  • Power Take-Offs
    • Multi-V groove for alternator drive
    • PTO Shaft Kit (optional)
  • General
    • Single side service (LH)
    • Keel cooled gensets do not include the keel cooler(s)
    • Lifting eyes
    • Protective lifting covers
    • Battery disconnect switch
    • Note: Keel-cooled gen sets do not include the keel cooler(s).
  • Power Take-Offs
    • Crankshaft Pulley - Crankshaft PTO Shaft, Engine Turning Device
  • Special Tests/Reports
    • Test Certificate at Rated PWR
  • Generators and Generator Attachments
    • 110V Anti-Condensation Heater
    • 230V Anti-Condensation Heater
  • Exhaust System
    • Dry Elbow
    • Dry Flange
    • Dry Elbow and Bellows