3512C IMO II

SPECS SUMMARY

Power Range	1280-2551 bhp (955-1902 bkW)
Speed Range	1200 rpm, 1600 rpm, 1800 rpm
Emissions	IMO II, EU IW
Aspiration	TTA

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.

Specifications

Power Range	1280-2551 bhp (955-1902 bkW)
Speed Range	1200 rpm, 1600 rpm, 1800 rpm
Emissions	IMO II, EU IW
Aspiration	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
Configuration	Vee 12, 4-Stroke-Cycle Diesel
Minimum Length	102 in (2590 mm)
Stroke - HD	8.5 in (215 mm)
Displacement - HD	3574 in³ (58.6 l)
Maximum Height	88.3 in (2242 mm)
Maximum Length	105.1 in (2669 mm)
Minimum Height	75 in (1904 mm)
Minimum Width	80.2 in (2037 mm)
Minimum Dry Weight	14400 lb (6532 kg)
Maximum Width	87.9 in (2232 mm)
Maximum Dry Weight	16340 lb (7411 kg)

Benefits and 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

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