3512C 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.

3512C IMO II
DETAILS

SPECIFICATIONS
Power Rating
Power Range 1280-2551 bhp (955-1902 bkW)


Engine Specifications
Speed Range 1200 rpm, 1600 rpm, 1800 rpm
Emissions IMO II, EU IW
Aspiration TTA
Bore 6.69 in
Stroke 7.48 in
Displacement 3161 in³
Rotation from Flywheel End Counterclockwise or Clockwise
Configuration Vee 12, 4-Stroke-Cycle Diesel


Dimensions & Weights
Maximum Height 88.3 in
Maximum Length 105.1 in
Maximum Width 87.9 in
Minimum Dry Weight 14400 lb
Minimum Height 75 in
Minimum Length 102 in
Minimum Width 80.2 in
Maximum Dry Weight 16340 lb


Engine Specifications
Displacement - HD 3574 in³
Stroke - HD 8.5 in


BENEFITS & FEATURES
Driving down total cost of ownership


A wide range of power ratings available, No aftertreatment technology required, Fuel consumption nominal rated BSFC

COMMITTED TO SUSTAINABLE DEVELOPMENT


Modified piston bowl shape to improve combustion and reduce emissions, Uses K-factor injector to align with predictive model analysis, Better electronic injection control using crank timing vs. cam timing, IMO Tier II Emissions Compliant, Lower IMAT = Lower NOx

IMPROVING WORKFORCE EFFICIENCY


Electronic governing (A4 ECU), Instrument panel shipped loose with Color Marine Power Display (MPD), Cold mode start strategy, Programmable low idle, Optional marine alarm and protection system

FULLY INTEGRATED MARINE POWER SOLUTION


Single-source support, Caterpillar warranty for all factory packaged components, Industry-leading one-year warranty on parts

EQUIPMENT
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