Propulsion engines
3512C
The Cat® 3512C commercial propulsion engine is designed for hard-working marine applications where reliability, fuel efficiency and emissions compliance are critical. With a wide range of ratings, advanced electronic controls and a proven V12 platform, the 3512C delivers dependable performance for tug, governmental and other workboat applications.
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V12 Continuous Duty
- Robust V12, 4-stroke diesel platform engineered for sustained high-load propulsion and continuous duty cycles across diverse commercial vessel platformsRobust V12, 4-stroke diesel platform engineered for sustained high-load propulsion and continuous duty cycles across diverse commercial vessel platforms.
Multiple Power Ratings
- Available in multiple ratings and speed configurations to match vessel duty profiles and mission requirement.
Optimized Fuel Utilization
- Optimized fuel delivery and combustion performance help maximize operating efficiency across a range of vessel duty cycles.
Integrated Controls
- Updated electronic controls meet IACS UR E29/E27 requirements for cyber security.
Emissions Compliance
- No aftertreatment required for IMO II, reducing system complexity, weight and installation footprint.
Rotation Configurations
- Broad power range with standard rotation and reverse rotation options to simplify vessel integration and repower projects.
Flexible Fit, Real Output
Proven Marine Power
Advanced Technology
| Power Range | 1281 - 2552 bhp |
|---|
| Application | Workboat |
|---|---|
| Speed Range | 1200 - 1800 rpm |
| Emissions | IMO II, China II |
| Aspiration | Twin Turbocharged Aspirator |
| Bore | 6.69 in |
| Stroke | 7.48 in |
| Stroke - HD | 8.46 in |
| Displacement | 3161.0 in³ |
| Displacement - HD | 3574.0 in³ |
| Rotation from Flywheel End | Counterclockwise or Clockwise |
| Configuration | V 12, 4-Stroke-Cycle Diesel |
| Maximum Length | 102.0 in |
|---|---|
| Maximum Width | 80.2 in |
| Minimum Dry Weight | 14400.0 lb |
| Minimum Width | 80.2 in |
| Minimum Height | 75.0 in |
| Minimum Length | 102.0 in |
| Maximum Height | 75.0 in |
| Maximum Dry Weight | 17866 lb |
| Length - Engine | 111.1 in |
Air Inlet System
- Separate circuit aftercooler core, corrosion resistant coated (air side)
- Powercore air cleaner
Control System
- Dual Caterpillar A6 Electronic Engine Control with Electronic Unit Injector Fuel System
- Rigid Wiring Harness (20 amp DC power required to drive Electronic Engine Control Module)
Exhaust System
- 3500C engines:
Fuel System
- Fuel transfer pump
- Electronically Controlled Unit Injectors
- Duplex Fuel Filters
Instrumentation
- Electronic service meter, instrument panel (24V), start/stop switch, emergency stop button, maintenance due light, diagnostic light, warning light, maintenance clear switch, start motor magnetic switch, 15 and 3A breakers
- Graphical Unit (Color Marine Power Display) for analog or digital of:
Lube System
- Crankcase breather groups, Top mounted
- Oil filler and dipstick, LH or RH
- Oil pump, gear type
- 250 / 500 / 1000 hour sump oil pan options
Mounting System
- Rails, engine mounting, ledge type, 203 mm x 203 mm (8 in x 8 in) or Front Trunnion
Power Takeoffs
- Accessory drives: Lower RH, lower LH
- Front housing, two-sided
Protection System
- A6 Electronic Monitoring System provides customer programmable engine derating strategies to protect against adverse operating conditions
- Emergency stop push button (located in Electronic Instrument Panel)
- Safety shutoff protection:
General
- Vibration damper and guard
- Lifting eyes
- NOTE: Engines for heat exchanger cooling do NOT include heat exchange
Flywheel and Flywheel Housing
- Flywheel, SAE No. 00, 183 teeth
- Flywheel housing, SAE No. 00, 183 teeth
Cooling System
- Oil cooler
- Thermostats and housing, Full open temperature 92 C (198 F)
- Jacket water pump, gear driven, centrifugal
- Auxiliary fresh water pump
- Aftercooler system: If using glycol, up to maximum 20% glycol concentration is allowed
Need installed dimensions with enclosure and tank? See Model Configurations
