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G3412C

Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3412C Low Emissions (LE) engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3412C (LE) engines include gas lift, gas gathering, and wellhead gas compression. Cat G3412C (LE) gas engine. Ratings: 475 bkW (637 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided aftertreatment.

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      Benefits & Features

      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- 2.0 g/bhp-hr NOx emission versions available- Larger turbocharger and aftercooler provide leanair/fuel mixture, low emissions, and excellent fuelconsumption

      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.

      Caterpillar Electronic Ignition System (EIS)

      Detonation sensitive timing protects the engine againstdetonation damage. Higher voltage and longer sparkduration mean easier starts, fewer misfires, andsmoother operation. Diagnostic codes help pinpointcylinder and component of interest. Spark plugmaintenance codes identify spark plug condition

      Ease of Operation

      –    Deep sump oil pan has a larger capacity for normal750-hour oil change intervals- High-strength pan and rails for excellent mounting andstability- 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 web-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.cat.com/oilandgas.

      specifications

      Engine Specifications
      Maximum Rating 475.0 bkW
      Emissions NSPS Site Compliant Capable
      Displacement 27.0 l
      Minimum Rating 475.0 bkW
      Compression Ratio 8.5:1
      Aspiration Turbocharged-Aftercooled
      Rotation from Flywheel End Counterclockwise
      Flywheel and Flywheel Housing SAE No. 0
      Flywheel Teeth 136
      Weight - Dry 2141.0 kg
      Oil Change Interval 750 hours
      Ignition, Protection Cat EIS
      Stroke 152.0 mm
      Bore 137.0 mm
      Capacity for Liquids
      Cooling System 54.9 l
      Lube Oil System - Refill 170.3 l
      Air Inlet System
      • Air cleaner — single element with service indicator
      Control System
      • Electronic governor
      • Air/fuel ratio control on 1.0 g/bhp-hr NOx engines
      Cooling System
      • Thermostats and housing
      • Jacket water pump
      • Aftercooler water pump
      • Aftercooler core
      Exhaust System
      • Watercooled exhaust manifolds
      • Dry exhaust elbow
      Flywheels & Flywheel Housings
      • SAE No. 0 flywheel
      • SAE No. 1 flywheel housing
      • SAE standard rotation
      Fuel System
      • Gas pressure regulator (1.5 to 5 psi gas supply required)
      • Natural gas carburetor
      Ignition System
      • Cat Electronic Ignition System (EIS) with detonationsensitive timing
      Instrumentation
      • Service meter
      Lube System
      • Crankcase breather — top mounted
      • Oil cooler
      • Oil filter — RH
      • Oil pan — deep sump
      • Oil filler — RH in valve cover and RH dipstick
      Mounting System
      • Engine supports
      Protection System
      • Detonation sensitive timing control
      • Shutoff
      General
      • Paint — Cat yellow
      • Crankshaft vibration damper and pulleys
      • Lifting eyes
      Air Inlet System
      • Air cleaner — two-stage
      • Air inlet adapter
      • Precleaner
      • Air cleaner rain cap
      Charging System
      • Battery chargers
      • Charging alternators
      • Ammeter gauge
      • Ammeter gauge and wiring
      • Control mounting
      Cooling System
      • Radiators
      • Blower fan and fan drives for customer suppliedradiators
      • Expansion tank
      • Heat exchangers
      Exhaust System
      • Flexible fittings
      • Elbows
      • Flanges
      • Rain caps
      • Mufflers
      Fuel System
      • Dual gas regulator
      • Carburetor kits
      • Fuel filter
      Ignition System
      • CSA ignition
      • Ignition ground wiring harness
      • Power supply
      Instrumentation
      • Alarm module
      • Gauges and instrument panels
      Mounting System
      • Vibration isolators
      Power Take-Offs
      • Auxiliary drive pulleys
      • Enclosed clutch and clutch support
      • Front stub shaft
      • Flywheel stub shaft
      • Pulley removal
      Protection System
      • Gas valves
      • Status control box interconnect wiring harness
      Starting System
      • Air starting motor — electric air start control
      • Air pressure regulator
      • Air silencer
      • Electric starting motors — single 24-volt
      • Starting aids
      • Battery sets
      General
      • Special paint

      Product specifications, standard and optional equipment may vary depending on stock availability. For more information or to verify specific product details, please get in touch with one of our sales representatives.

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