Power Range
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Caterpillar
Cat® C18 ACERT Propulsion Engine (Tier 3)
Application
Workboat
Workboat
Speed Range
1500 - 2100 rpm
1500 - 2100 rpm
Emissions
U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II
U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II
Overview
The Cat® C18 commercial propulsion engine is built to deliver reliable, high-output power for workboats operating in demanding marine environments. Its inline 6-cylinder, four-stroke diesel design provides the durability and performance needed for long hours, heavy-duty duty cycles and consistent propulsion. Supported by the global Cat dealer network, the C18 helps keep vessels productive, serviceable and ready for the next job.
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Exterior
360° Exterior view. Double click on the image to zoom in on any area of the product.
Features
Inline 6 Design
Cooling Options
Emissions Compliance
Compact Footprint
Smart Monitoring
Details
Specifications
Power Rating
| Spec | Value |
|---|---|
| Power Range | 454 - 1136 bhp (339 - 847 bkW) 454 - 1136 bhp (339 - 847 bkW) |
Engine Specifications
| Spec | Value |
|---|---|
| Application | Workboat Workboat |
| Speed Range | 1500 - 2100 rpm 1500 - 2100 rpm |
| Emissions | U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II |
| Aspiration | Turbocharged - Aftercooled Turbocharged - Aftercooled |
| Bore | 5.7 in 145 mm |
| Stroke | 7.2 in 183 mm |
| Displacement | 1106 in³ 18.1 l |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Oil Change Interval | 250 / 500 250 / 500 |
| Refill Capacity | 49 / 68 l 49 / 68 l |
| Configuration | In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel |
| Cooling | Heat Exchanger or Keel Cooled Heat Exchanger or Keel Cooled |
| Governor | Electronic Electronic |
| Flywheel Housing | SAE No. 0 (136 teeth) or SAE No. 1 (113 teeth) SAE No. 0 (136 teeth) or SAE No. 1 (113 teeth) |
Dimensions & Weights
| Spec | Value |
|---|---|
| Minimum Dry Weight | 4000 lb 1814 kg |
| Minimum Length | 73 in 1854 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 |
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
- Air Start Accessories
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
- SAE No. 0, Flywheel SAE. 18, 136 teeth
- 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
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 control
- Engine Protection Mode for extended ambient conditions – EPA Tier 3 Ratings Only
- 70-pin customer connector
- Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-
Optional Equipment
EXHAUST SYSTEM
- Dry Elbows
- Water-Cooled Elbows
- Flexible Fitting
- Outlet 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
- CAT Alarm and Protection
COOLING SYSTEM
- Aux expansion tank flange kit
- Exhaust Temp Sensor
- Heat Exchanger Pressure Sensor
FUEL SYSTEM
- Duplex Fuel Filters
- Flexible Fuel Lines
- Fuel Cooler
- Fuel/Water Separator
INSTRUMENTATION
- Instrument Panels
- OEM Wiring Harness
- Engine to Engine Harness
- Transmission Sensors
- Oil Level Sensor
Instrumentation
- Digital Tachometer
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 vibrations analysis
- Crankshaft Pulleys
- Front Stub Shaft
- Hydraulic Pump Drive Adapter
- Front Enclosed Clutch
PROTECTION SYSTEM
- Marine Classification Society and SOLAS
STARTING SYSTEM
- Electric Starting Motors – Single 24 Volt
- Starting Aids – JW Heater 120 / 240V
- Single Electric 24V Starter
- Battery Sets – 24 Volt – Dry
- Single Air Starting Motor
PACKING
- Engine Protective Cover
- Storage Preservation
- Export Packing