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.
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 | 1004 BHP 749 bkW |
|---|---|
| Rated Speed | 1400 rpm 1400 rpm |
| Emissions | Lean Burn: EPA NSPS Site Compliant Capable with Customer Supplied Aftertreatment, 0.5 g/bhp-hr NOx |
| Minimum Rating | 790 BHP 589 bkW |
| Displacement | 3158 in³ 51.8 l |
| Ignition, Protection | ADEM™ A3 |
| Air/Fuel Ratio Control | ADEM™ A3 |
| Length | 120 in 3037 mm |
| Width | 2201 mm 86.7 in |
| Height | 84.1 in 2135 mm |
| Weight - Dry | 7081 lb 15611 kg |
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.)
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