Gas compression engines
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.
Request a Quote
Have questions? Call 800.768.4200
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.
| Maximum Rating | 637.0 BHP |
|---|---|
| Rated Speed | 1800 rpm |
| Emissions | Rich Burn: EPA NSPS Site Compliant Capable with Caterpillar Supplied AFRC and Customer Supplied Aftertreatment |
| Minimum Rating | 637.0 BHP |
| Compression Ratio | 8.5:1 |
| Aspiration | Turbocharged - Aftercooled |
| Rotation from Flywheel End | Counterclockwise |
| Flywheel and Flywheel Housing | SAE No. 0 |
| Flywheel Teeth | 136 |
| Oil Change Interval | 750 hours |
| Ignition, Protection | Cat EIS |
| Displacement | 1649 in³ |
| Stroke | 6.0 in |
| Bore | 5.4 in |
| Length | 96 in |
| Width | 63 in |
| Height | 77 in |
| Weight - Dry | 2800 lb |
| Cooling System | 14.5 gal (US) |
|---|---|
| Lube Oil System - Refill | 45.0 gal (US) |
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
Need installed dimensions with enclosure and tank? See Model Configurations
