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Caterpillar

Cat® C4.4 ACERT Marine Generator Set

The C4.4 ACERT marine genset packages with heat exchanger or keel cooling are available with 60 Hz ratings of 60, 75, 99, 118 ekW and 50 Hz ratings of 65, 80, 99 ekW. Radiator cooled gen sets are with 60 Hz ratings of 51, 66, 90, and 105 ekW and 50 Hz ratings of 58, 73, and 88 ekW. The C4.4 ACERT meets U.S. EPA Tier 3 and EU CCNR Stage II emissions regulations. The C4.4 ACERT is electronically controlled with a Common Rail fuel system.

Photos

Features

Specifications

  • Generator Set Specifications
    Spec Value
    Minimum Rating 58R ekW (50 Hz), 51R ekW (60 Hz)
    Maximum Rating 88R ekW (50 Hz), 105R ekW (60 Hz)
    Frequency 50 Hz or 60 Hz
    Speed 1500 rpm or 1800 rpm
    Emissions/Fuel Strategy U.S. EPA Tier 3 / CCNR Stage 2
  • Engine Specifications
    Spec Value
    Aspiration TA
    Bore 4.13 in
    Stroke 5 in
    Displacement 269 in³
    Governor Type Electronic
    Engine Model I-4, 4-Stroke-Cycle-Diesel
  • Generator Set Dimensions
    Spec Value
    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 49.0 inches (1245 mm)
  • Generator Specifications
    Spec Value
    Excitation AREP
    Pitch 2/3
    Number of Leads 12-lead reconnectable
    Insulation Class H
    IP Rating IP23
    Voltage Regulator ±0.5%

Standard Equipment

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).

Optional Equipment

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