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: 391-500 bkW (524-670 bhp) @ 1200-1400 rpm are NSPS site compliant capable with customer-provided air-fuel ratio control and aftertreatment or available for non-regulated areas.
Features
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Emissions
Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/8
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Advanced Digital Engine Management
ADEM A3 control system providing integrated ignition, speed governing, protection, and controls, including detonation-sensitive variable ignition timing. ADEM A3 has improved: user interface, display system, shutdown controls, and system diagnostics.
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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.
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Ease of Operation
Side covers on block allow for inspection of internal components
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Full Range of Attachments
Large variety of factory-installed engine attachments reduces packaging time
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Testing
Every engine is full-load tested to ensure proper engine performance
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Gas Engine Rating Pro
GERP is a web-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.
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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
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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
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Web Site
For all your petroleum power requirements, visit www.cat.com/oilandgas.
Specifications
Units for specifications
Engine Specifications
| Maximum Rating | 670 BHP 500 bkW |
|---|---|
| Rated Speed | 1400 rpm 1400 rpm |
| Emissions | With Customer supplied Aftertreatment, 2g/bhp-hr NOx |
| Minimum Rating | 524 BHP 391 bkW |
| Displacement | 2105 in³ 34.5 l |
| Ignition, Protection | ADEM™ A3 |
| Air/Fuel Ratio Control | ADEM™ A3 |
| Length | 96 in 2440 mm |
| Width | 70 in 1768 mm |
| Height | 76 in 1907 mm |
| Weight - Dry | 11950 lb 5420 kg |
Standard Equipment
Air Inlet System
- Remote air inlet adapters
Charging System
- Battery chargers
Cooling System
- Jacket water thermostats and housing — full open temperature 98°C (208°F)
- Jacket water pump — gear driven, centrifugal, non-self-priming
- Aftercooler water pump — gear driven, centrifugal, non-self-priming
- Aftercooler core for sea-air atmosphere
- Aftercooler thermostats and housing — full open temperature 35°C (95°F)
- Aftercooler — raw water, cleanable
Exhaust System
- Exhaust manifolds — watercooled
Flywheels & Flywheel Housings
- SAE No. 00 flywheel
- SAE No. 00 flywheel housing
- SAE standard rotation
Fuel System
- Gas pressure regulator
- Natural gas carburetor
- Fuel gas shut-off valve (24V DC)
Instrumentation
- Advisor panel
- Advisor interconnect harness
Lubrication System
- Crankcase breathers — top mounted
- Oil cooler
- Oil filter — RH
- Oil pan — shallow
- Oil sampling valve
- Turbo oil accumulator
Mounting System
- Rails, engine mounting
Power Take-Offs
- Front housing — two-sided
- Front lower LH accessory drive
Protection System
- Electronic shutoff system
- Gas shutoff valve
General
- Paint — Cat yellow
- Vibration damper and guard
Optional Equipment
Air Inlet System
- Remote air inlet adapters
Charging System
- Battery chargers
Cooling System
- Aftercooler core
- Thermostatic valves
- Connections
- Expansion and overflow tank
- Water level switch gauge
European Certifications
- European Union certifications
Exhaust System
- Flexible fittings
- Elbows
- Flanges
- Flange and exhaust expanders
- Mufflers
Fuel System
- Fuel filter
Instrumentation
- Customer communication modules
Lubrication System
- Oil filters — duplex
- Oil pan drain
- Oil level regulator
- Sump pumps
- Lubricating oil
Mounting System
- Rails
- Vibration isolators
Power Take-Offs
- Auxiliary drive shaft
- Auxiliary drive pulleys
- Front stub shaft
- Pulleys
Protection System
- Gas valve
- Explosion relief valves
Starting System
- Air pressure regulator
- Air silencer
- JW heaters
- Battery sets (24-volt dry)
- Battery accessories
General
- Flywheel guard removal
- Engine barring group
- Premium 8:1 pistons