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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.

Photos

Features

Specifications

  • Power Rating
    Spec Value
    Power Range 1280-2551 bhp (955-1902 bkW)
  • Engine Specifications
    Spec Value
    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
    Displacement - HD 3574 in³
    Stroke - HD 8.5 in
  • Dimensions & Weights
    Spec Value
    Maximum Length 105.1 in
    Maximum Width 87.9 in
    Minimum Dry Weight 14400 lb
    Minimum Width 80.2 in
    Minimum Height 75 in
    Minimum Length 102 in
    Maximum Height 88.3 in
    Maximum Dry Weight 16340 lb

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