New | Cat C18 ACERT Marine Generator Set (IMO II)

C18 ACERT generator sets incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion since no sea water circulates through the aftercooler. Many other improvements on these engines contribute to minimizing owning and operating costs. The IMO II and EU Stage IIIA compliant ratings are available with heat exchanger, keel cooled, or radiator cooling options. All major MCS type approvals available from factory.

Generator Set Specifications
Minimum Rating330 ekW (418 kVA)
Maximum Rating450 ekW (563 kVA)
Frequency50 Hz or 60 Hz
Speed1500 rpm (50 hz) or 1800 rpm (60 hz)
Generator Set Configurations
Emissions/Fuel StrategyIMO II
Engine Specifications
Engine ModelIn-line 6, 4-Stroke-Cycle Diesel
ConfigurationIn-line 6, 4-Stroke-Cycle Diesel
AspirationTA, TTA
Bore5.7 in
Stroke7.2 in
Displacement1106 in3
Rotation (from flywheel end)Counterclockwise
Dimensions & Weights
Length119.7 in
Width60.9 in
Height66.3 in
Weight4406 lb
AIR INLET SYSTEM
  • Separate circuit after-cooled (SCAC)
  • Open Crankcase Ventilation (OCV) system
  • Turbocharger, jacket water cooled
  • Turbocharger inlet, 152 mm (6 in) OD straight connection
CONTROL SYSTEM
  • If an EMCP panel or MGCP option is not chosen as optional equipment, then start/stop controls must be provided by the customer
  • Programmable low idle
  • Electronic diagnostics and fault logging
  • Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
  • Electronic fuel/air ratio control
COOLING SYSTEM
  • Separate Circuit After-Cooling (SCAC) for both HEX and Keel cooled engines
  • Engine JW and SCAC Shell & Tube Heat Exchangers for HEX cooled engines
  • SCAC pump, gear driven
  • Jacket water pump, gear driven
  • Auxiliary water pump, bronze impeller, gear driven, for HEX cooled engines only
  • SCAC and JW shunt tanks for maintaining proper pump inlet pressures
EXHAUST SYSTEM
  • Water-cooled exhaust manifold & turbocharger
  • 152 mm (6 in) round flanged outlet
FLYWHEELS & FLYWHEEL HOUSINGS
  • Flywheel Housing, SAE No. 0
  • Flywheel, 18 inch, 136 teeth
  • SAE standard rotation
FUEL SYSTEM
  • Front service simplex fuel system
  • Fuel transfer pump, gear driven
  • Manual fuel priming pump
  • Hybrid fuel line design
GENERATORS AND GENERATOR ATTACHMENTS
  • SR4B Random Wound
  • Permanent Magnet Excitation
  • 12 leads
  • Generator set package includes Caterpillar's Digital Voltage Regulator (CDVR)
  • Marine Class H insulation, Class F temperature rise
  • Surface mount platinum bearing and stator RTD's
  • Anti-condensation space heaters (120/240VAC, 300W, 2 elements)
  • Generator IP23 protection
  • Coastal insulation protection
LUBE SYSTEM
  • Front service simplex oil system
  • Center sump oil pan: Deep, 500hr oil change interval
  • Front and top service oil filler locations
  • Front service dipstick
  • Oil pump, gear driven
MOUNTING SYSTEM
  • Formed C-channel rails, 254mm (10.0in) height
  • Four shipped loose isolators for installation below package base
POWER TAKE-OFFS
  • Poly-V groove for alternator drive
  • NOTE: There are no standard power take-offs available
GENERAL
  • Front damper guard
  • Front service engine
  • Common electrical bonding point on HEX and KEEL cooled engines
  • Engine does not ship with zinc components
  • Engine is certified to D2/E2 emissions cycles
  • CERTIFIED TO 2013 EPA TIER 3 AND IMO II MARINE COMMERCIAL AUXILIARY (D2/E2 CYCLE) EMISSIONS STANDARDS.
  • NOTE: These engines are for constant speed generator set applications only, and NOT to be used for variable speed applications.

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