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Caterpillar
3512C Propulsion Engine (IMO II)
The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings (including High Displacement ratings), no required aftertreatment technology, and nominal rated BSFC fuel consumption – it will drive down your total cost of ownership. With a redesigned piston bowl shape to improve combustion, and improved fuel delivery, this engine is IMO II emissions compliant and committed to sustainable environmental development. Single-source support, the Caterpillar warranty, and industry-leading one-year warranty on parts make the 3512C a fully integrated marine power solution.
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Specifications
Power Rating
| Spec | Value |
|---|---|
| Power Range | 1280-2551 bhp (955-1902 bkW) 1280-2551 bhp (955-1902 bkW) |
Engine Specifications
| Spec | Value |
|---|---|
| Speed Range | 1200 rpm, 1600 rpm, 1800 rpm 1200 rpm, 1600 rpm, 1800 rpm |
| Emissions | IMO II, EU IW IMO II, EU IW |
| Aspiration | TTA TTA |
| Bore | 6.69 in 170 mm |
| Stroke | 7.48 in 190 mm |
| Displacement | 3161 in³ 51.8 l |
| Rotation from Flywheel End | Counterclockwise or Clockwise Counterclockwise or Clockwise |
| Configuration | Vee 12, 4-Stroke-Cycle Diesel Vee 12, 4-Stroke-Cycle Diesel |
| Displacement – HD | 3574 in³ 58.6 l |
| Stroke – HD | 8.5 in 215 mm |
Dimensions & Weights
| Spec | Value |
|---|---|
| Maximum Length | 102 in 2590 mm |
| Maximum Width | 80.2 in 2037 mm |
| Minimum Dry Weight | 14400 lb 6532 kg |
| Minimum Width | 80.2 in 2037 mm |
| Minimum Height | 75 in 1904 mm |
| Minimum Length | 102 in 2590 mm |
| Maximum Height | 75 in 1904 mm |
| Maximum Dry Weight | 16340 lb 7411 kg |
Standard Equipment
Air Inlet System
- Separate circuit aftercooler core, corrosion resistant coated (air side)
- Powercore air cleaner
Control System
- Dual Caterpillar A4 Electronic Engine Control with Electronic Unit Injector Fuel System
- Rigid Wiring Harness (10 amp DC power required to drive Electronic Engine Control Module)
Exhaust System
- 3500C engines:
Fuel System
- Fuel transfer pump
- Electronically Controlled Unit Injectors
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 or 1000 hour sump oil pan
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
- A4 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
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
Optional Equipment
Air Inlet System
- Air Inlet Adapters
Charging System
- Battery Chargers
- Charging Alternator
Control System
- Throttle Control
Cooling System
- Coolant Shunt Tank
- Cooling System Options
Exhaust System
- Flexible Fittings
- Elbows
- Flanges
- Flange and Exhaust Expanders
- Mufflers
Fuel System
- Fuel Cooler Heat Exchanger – Sea Water
- Primary Fuel Filter
- Fuel Level Switch
- Rigid Fuel Lines
- Flexible Fuel Lines
Instrumentation
- Communication Modules
- Color Marine Power Display System
- Pilot House Instrument Panels
- Marine Gear Sensors
Lube System
- Sump Pumps
- Lubricating Oil
Power Take-Offs
- Stub Shafts
- Crankshaft Pulleys
- Damper Guard
- Flexible Coupling and Guards
Marine Society Requirements
- Green Passport Documentation
- Spray Shielding
Protection System
- Shutoff and Alarm Contactors
Special Appearance Packages
- Special Appearance Packages with Chrome Covers
- Yacht Class Finish
Starting System
- Air Starting Motor Options
- Battery Sets – 24 Volt – Dry
- Battery Rack
Mounting System
- Engine Supports
- Vibration Isolation Mountings
Packing
- Shrink Wrap Protection
- Storage Preservation with Glycol Solution/Vapor Corrosion Inhibitor
- Export Boxing
- Export Packaging