C18 ACERT IMO II

Commercial Propulsion Engines C18 ACERT IMO II

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Key Specs

Power Range
454-715 bhp (339-533 bkW)
454-715 bhp (339-533 bkW)
Speed Range
1800-2100 rpm
1800-2100 rpm
Emissions
IMO II, EU IIIA
IMO II, EU IIIA

Overview

The C18 ACERT marine propulsion engine has commercial application ratings of 454-715 bhp that meet IMO II & EU Stage IIA emissions regulations, and 469-715 bhp that meet 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.

Product Specifications for C18 ACERT IMO II

Power Range 454-715 bhp (339-533 bkW) 454-715 bhp (339-533 bkW)
Speed Range 1800-2100 rpm 1800-2100 rpm
Emissions IMO II, EU IIIA IMO II, EU IIIA
Aspiration TA, TTA TA, TTA
Bore 5.7 in 145 mm
Stroke 7.2 in 183 mm
Displacement 1106 in³ 18.1 l
Rotation from Flywheel End Counterclockwise Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel
Minimum Dry Weight 4000 lb 1814 kg
Minimum Length 73 in 1854 mm
Maximum Length 76 in 19312 mm
Minimum Height 47.2 in 1198 mm
Maximum Height 51.2 in 1300 mm
Minimum Width 44.6 in 1134 mm
Maximum Width 47.4 in 1204 mm
Maximum Dry Weight 4299 lb 1950 kg

C18 ACERT IMO II Standard 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 +/-

C18 ACERT IMO II Optional Equipment

Exhaust System

  • Dry Elbows
  • Water-Cooled Elbows
  • Flexible Fitting
  • Flange
  • Muffler
  • Muffler Spark Arresting

Air Inlet System

  • Air Inlet Adapter

Charging System

  • Battery Chargers
  • Charging Alternators
  • Alternator Mounting Group
  • Ammeter

Control System

  • MECP I
  • Caterpillar Alarm System and Protection

Cooling System

  • AUX Expansion Tank Flange Kit

Fuel System

  • Duplex Fuel Filters
  • Flexible Fuel Lines
  • Fuel Cooler
  • Primary Fuel Filters

Instrumentation

  • Instrument Panels: Marine Power Display, Color Marine Power Display, Color MPD Dual Display Harness, MPD Wiring Connection Kit
  • OEM Wiring Harness
  • Engine to Engine Harness
  • Gauges
  • Transmission Sensors
  • Oil Level Sensor

Lube System

  • Duplex Oil Filters
  • Transmission Oil Cooler
  • Sump Pump

Mounting System

  • Vibration Isolators
  • Front Support
  • Rear Support

Power Take-Offs

  • Note: PTO Options Require Torsional Vibration Analysis
  • Crankshaft Pulleys
  • Front Stub Shaft
  • Hydraulic Pump Drive Adapter
  • Front Enclosed Clutch

Protection System

  • Marine Classification Society and SOLAS
  • Marine Classification Society and Fire Resistance

Starting System

  • Electric Starting Motors - Single 24 Volt
  • Air Starting Motor
  • Air Start Accessories
  • Starting Aids - JW Heaters
  • Battery Sets - 24 Volt - Dry

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