C18 ACERT

Overview

The C18 ACERT marine propulsion engine has commercial application ratings of 454-715 bhp that meet IMO II and EU Stage IIA emissions regulations, and 469-715 bhp that meet EPA Tier 3, IMO II and EU Stage IIIA emissions regulations and 814-1015 mhp (803-1001 bhp) at 2100-2300 rpm that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA emissions regulations. In addition to the benefits the C18 ACERT's advanced marine engine technology brings, you welcome aboard legendary Cat product support. No matter where your spirit of adventure takes you, rest assured the Cat Dealer Network is close by.

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Power Rating
Power Range454-715 bhp (339-533 bkW)
Engine Specifications
Speed Range1800-2100 rpm
EmissionsIMO II, EU IIIA
AspirationTA, TTA
Bore145mm
Stroke183mm
Displacement18.1l
Rotation from Flywheel EndCounterclockwise
ConfigurationIn-line 6, 4-Stroke-Cycle Diesel
Dimensions & Weights
Minimum Dry Weight1814kg
Minimum Length1854mm
Maximum Length19312mm
Minimum Height1198mm
Maximum Height1300mm
Minimum Width1134mm
Maximum Width1204mm
Maximum Dry Weight1950kg
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
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, for HEX cooled engines only
Jacket water pump, gear driven
Sea water pump, bronze impeller, gear driven
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
SAE No. 1, Flywheel: 14 inch, 113 teeth
Fuel System
Front service simplex fuel system
Fuel transfer pump, gear driven
Manual fuel priming pump
Hybrid fuel line design
Lube System
Front service simplex oil system
Center sump oil pan: Deep; 500 hour oil change interval, Shallow; 250 hour oil change interval
Front and top service oil filler locations
Front service dipstick
Oil pump, gear driven
Mounting System
Front support - adjustable
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
Engine does not ship with zinc components
Engine is certified to D2/E2 emissions cycles
Certified to IMO II Marine Commercial Propulsion (E3) Cycle Emission Standards
Certified to EU Stage IIIA AND CCNR Stage II (E3 Cycle) Emissions Standards.
NOTE: Ratings listed below can also be used in Recreational / Pleasure Craft applications.
Control System
Programmable low idle
WOSR (Wide Operating Speed Range) available for EPA Tier 3 - B and C Ratings
Adjustable High Idle (TEL) - EPA Tier 3 WOSR Ratings Only
Electronic diagnostics and fault logging
Engine and transmission monitoring (speed, temperature, pressure)
Electronic fuel/air ratio contro
Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
Torque Limiting functionality for WOSR ratings only
70-pin customer connector
Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-
Cooling System
Heat exchanger and Keel cooled options for all ratings
Emissions
IMO II and EU IWW compliant for all ratings
Separate Circuit Aftercooling System
The primary advantage of the separate circuit aftercooling system (SCAC) is that no sea water circulates through the aftercooler.
Additional Ratings
Specific ratings are available that meet IMO II emissions regulations and additional ratings are available that meet both EPA Tier 3 and IMO II emissions regulations.
Specifications
Power Rating
Power Range454-715 bhp (339-533 bkW)
Engine Specifications
Speed Range1800-2100 rpm
EmissionsIMO II, EU IIIA
AspirationTA, TTA
Bore145mm
Stroke183mm
Displacement18.1l
Rotation from Flywheel EndCounterclockwise
ConfigurationIn-line 6, 4-Stroke-Cycle Diesel
Dimensions & Weights
Minimum Dry Weight1814kg
Minimum Length1854mm
Maximum Length19312mm
Minimum Height1198mm
Maximum Height1300mm
Minimum Width1134mm
Maximum Width1204mm
Maximum Dry Weight1950kg
Equipment
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
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, for HEX cooled engines only
Jacket water pump, gear driven
Sea water pump, bronze impeller, gear driven
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
SAE No. 1, Flywheel: 14 inch, 113 teeth
Fuel System
Front service simplex fuel system
Fuel transfer pump, gear driven
Manual fuel priming pump
Hybrid fuel line design
Lube System
Front service simplex oil system
Center sump oil pan: Deep; 500 hour oil change interval, Shallow; 250 hour oil change interval
Front and top service oil filler locations
Front service dipstick
Oil pump, gear driven
Mounting System
Front support - adjustable
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
Engine does not ship with zinc components
Engine is certified to D2/E2 emissions cycles
Certified to IMO II Marine Commercial Propulsion (E3) Cycle Emission Standards
Certified to EU Stage IIIA AND CCNR Stage II (E3 Cycle) Emissions Standards.
NOTE: Ratings listed below can also be used in Recreational / Pleasure Craft applications.
Control System
Programmable low idle
WOSR (Wide Operating Speed Range) available for EPA Tier 3 - B and C Ratings
Adjustable High Idle (TEL) - EPA Tier 3 WOSR Ratings Only
Electronic diagnostics and fault logging
Engine and transmission monitoring (speed, temperature, pressure)
Electronic fuel/air ratio contro
Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
Torque Limiting functionality for WOSR ratings only
70-pin customer connector
Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-
Benefits & Features
Cooling System
Emissions
Separate Circuit Aftercooling System
Additional Ratings
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