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. Engine Design
- Proven reliability and durability - Ability to burn a wide spectrum of gaseous fuels - Robust diesel strength design prolongs life and lowers owning and operating costs - Broad operating speed range Emissions
- Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/8 - 2.0 g/bhp-hr NOx emission versions available - Larger turbocharger and aftercooler provide lean air/fuel mixture, low emissions, and excellent fuel consumption Lean Burn Engine Technology
Lean-burn engines operate with large amounts of excess air. The excess air absorbs heat during combustion reducing the combustion temperature and pressure, greatly reducing levels of NOx. Lean-burn design also provides longer component life and excellent fuel consumption. Caterpillar Electronic Ignition System (EIS)
Detonation sensitive timing protects the engine against detonation damage. Higher voltage and longer spark duration mean easier starts, fewer misfires, and smoother operation. Diagnostic codes help pinpoint cylinder and component of interest. Spark plug maintenance codes identify spark plug condition Ease of Operation
- Deep sump oil pan has a larger capacity for normal 750-hour oil change intervals - High-strength pan and rails for excellent mounting and stability - Side covers on block allow for inspection of internal components Full Range of Attachments
Large variety of factory-installed engine attachments reduces packaging time Testing
Every engine is full-load tested to ensure proper engine performance. Gas Engine Rating Pro
GERP is a PC-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine 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 outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Cat parts and labor warranty Preventive maintenance agreements available for repairbefore-failure options S•O•SSM program matches your oil and coolant samples against 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 production Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products. - Cast engine blocks, heads, cylinder liners, and flywheel housings - Machine critical components - Assemble complete engine Web Site
For all your petroleum power requirements, visit www.catoilandgasinfo
.com G3412C Standard Equipment 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 detonation sensitive 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 G3412C Optional Equipment 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 supplied radiators
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
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.
Engine Design
- Proven reliability and durability - Ability to burn a wide spectrum of gaseous fuels - Robust diesel strength design prolongs life and lowers owning and operating costs - Broad operating speed range
Emissions
- Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/8 - 2.0 g/bhp-hr NOx emission versions available - Larger turbocharger and aftercooler provide lean air/fuel mixture, low emissions, and excellent fuel consumption
Lean Burn Engine Technology
Lean-burn engines operate with large amounts of excess air. The excess air absorbs heat during combustion reducing the combustion temperature and pressure, greatly reducing levels of NOx. Lean-burn design also provides longer component life and excellent fuel consumption.
Caterpillar Electronic Ignition System (EIS)
Detonation sensitive timing protects the engine against detonation damage. Higher voltage and longer spark duration mean easier starts, fewer misfires, and smoother operation. Diagnostic codes help pinpoint cylinder and component of interest. Spark plug maintenance codes identify spark plug condition
Ease of Operation
- Deep sump oil pan has a larger capacity for normal 750-hour oil change intervals - High-strength pan and rails for excellent mounting and stability - Side covers on block allow for inspection of internal components
Full Range of Attachments
Large variety of factory-installed engine attachments reduces packaging time
Testing
Every engine is full-load tested to ensure proper engine performance.
Gas Engine Rating Pro
GERP is a PC-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine 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 outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Cat parts and labor warranty Preventive maintenance agreements available for repairbefore-failure options S•O•SSM program matches your oil and coolant samples against 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 production Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products. - Cast engine blocks, heads, cylinder liners, and flywheel housings - Machine critical components - Assemble complete engine
Web Site
For all your petroleum power requirements, visit www.catoilandgasinfo.com
G3412C Standard Equipment
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 detonation sensitive timing
Instrumentation
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
Protection System
- Detonation sensitive timing control
- Shutoff
General
- Paint — Cat yellow
- Crankshaft vibration damper and pulleys
- Lifting eyes
G3412C Optional Equipment
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 supplied radiators
- 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
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