G3512

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Overview

The line of G3500 engines brings versatility, uptime, and low operating cost to your gas compression operation. They are equipped with ADEM A3 technology that enables highest performance and safety while maintaining low emissions.Ideal applications for G3500 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3508 gas engine. Ratings: 589-749 bkW (790-1004 bhp) @ 1200-1400 rpm are NSPS site compliant capable with customer-provided aftertreatment.

Engine Specifications

Units:
Minimum Rating 790.0 bhp 589.0 bkW Less
Maximum Rating 1004.0 bhp 749.0 bkW Less
Emissions NSPS Site Compliant Capable NSPS Site Compliant Capable Less
Ignition, Protection ADEM™ A3 ADEM™ A3 Less
Air/Fuel Ratio Control ADEM™ A3 ADEM™ A3 Less

Engine Design

- Proven reliability and durability- Ability to burn a wide spectrum of gaseous fuels- Robust diesel strength design prolongs life and lowersowning and operating costs- Broad operating speed range

Emissions

Meets U.S. EPA Spark Ignited Stationary NSPSEmissions for 2007/8

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition,speed governing, protection, and controls, includingdetonation-sensitive variable ignition timing. ADEM A3has improved: user interface, display system, shutdowncontrols, and system diagnostics.

Lean Burn Engine Technology

Lean-burn engines operate with large amounts of excessair. The excess air absorbs heat during combustionreducing the combustion temperature and pressure,greatly reducing levels of NOx. Lean-burn design alsoprovides longer component life and excellent fuelconsumption.

Ease of Operation

Side covers on block allow for inspection of internalcomponents

Full Range of Attachments

Large variety of factory-installed engine attachmentsreduces packaging time

Testing

Every engine is full-load tested to ensure proper engineperformance.

Gas Engine Rating Pro

GERP is a PC-based program designed to provide siteperformance capabilities for Cat® natural gas enginesfor the gas compression industry. GERP providesengine data for your site’s altitude, ambient temperature,fuel, engine coolant heat rejection, performance data,installation drawings, spec sheets, and pump curves.

Product Support Offered Through Global Cat Dealer

More than 2,200 dealer outletsCat factory-trained dealer technicians service everyaspect of your petroleum engineCat parts and labor warrantyPreventive maintenance agreements available for repairbefore-failure optionsS•O•SSM program matches your oil and coolant samplesagainst Caterpillar set standards to determine:- Internal engine component condition- Presence of unwanted fluids- Presence of combustion by-products- Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Over 60 years of natural gas engine productionOwnership of these manufacturing processes enablesCaterpillar to produce high quality, dependable products.- Cast engine blocks, heads, cylinder liners, and flywheelhousings- Machine critical components- Assemble complete engine

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com

G3512 Standard Equipment

Air Inlet System
  • Air cleaner — intermediate-duty with service indicator

Cooling System
  • High temperature circuit (engine jacket + oil cooler):
  • Low temperature circuit (aftercooler):

Exhaust System
  • Watercooled exhaust manifolds
  • Crankcase breather — top mounted

Flywheels & Flywheel Housings
  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation

Fuel System
  • Gas pressure regulator
  • Natural gas carburetor

Instrumentation
  • Advisor panel

Lubrication System
  • Oil cooler
  • Oil filter — RH
  • Oil bypass filter (TA or NA engines only)
  • Oil pan — shallow
  • Oil sampling valve
  • Turbo oil accumulator

Mounting System
  • Rails, engine mounting — 254 mm (10 in.)

Protection System
  • Electronic shutoff system
  • Gas shutoff valve

General
  • Paint — Cat yellow
  • Vibration damper and guard — dual 484 mm (23 in.)

G3512 Optional Equipment

Air Inlet System
  • Remote air inlet adapters
  • Precleaners

Charging System
  • Battery chargers
  • Charging alternator

Cooling System
  • Cleanable aftercooler core
  • Connection flanges
  • Expansion and overflow tank
  • Water level switch gauge

Exhaust System
  • Flexible fittings
  • Elbows
  • Connection flanges
  • Exhaust expanders
  • Rain cap (NA engine only)
  • Mufflers

Fuel System
  • Low pressure gas conversions
  • Propane gas valve and jet kits
  • Fuel filter
  • Air/fuel ratio control

Instrumentation
  • PL1000 communications modules

Lubrication System
  • Oil bypass filter removal
  • Oil pan accessories
  • Sump pump
  • Air prelube pump
  • Manual prelube pump
  • Lubricating oil

Mounting System
  • Rails
  • Vibration isolators

Power Take-Offs
  • Front accessory drives
  • Auxiliary drive shafts and pulleys
  • Front stub shaft
  • Pulleys

Protection System
  • Crankcase explosion relief valves

Starting System
  • Air starting motor
  • Air pressure regulator
  • Air silencer
  • Electric air start controls
  • Electric starting motors — dual 24-volt
  • Battery sets (24-volt dry), cables, and rack

General
  • Flywheel guard removal
  • Engine barring group
  • Premium 8:1 pistons

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
Oil & Gas Financing Solutions

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