Gas compression engines
G3508J
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. The Cat G3508J gas engines are rated at 515 bkW (690 bhp) @ 1400 rpm and are NSPS site compliant capable with customer-provided air-fuel ratio control and aftertreatment.
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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 2010
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.
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.
Ease of Operation
- 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 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.
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 optionsS•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 60 Years of Gas 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
| Rated Speed | 1400 rpm |
|---|---|
| Emissions | Lean Burn: EPA NSPS Site Compliant Capable with Customer Supplied Aftertreatment, 0.5 g/bhp-hr NOx |
| Minimum Rating | 1380 BHP |
| Length | 96 in |
| Width | 79.9 in |
| Height | 84.3 in |
| Weight - Dry | 13306 lb |
| Maximum Rating | 690 BHP |
| Displacement | 2105 in³ |
| Aspiration | Turbocharged - 2 Stage Aftercooled |
| Oil Change Interval | 2000 hours |
| Stroke | 7.5 in |
| Bore | 6.7 in |
| Governor | Electronic (ADEM A3) |
| Combustion | Lean Burn |
| Lube Oil System | 423 L (112 gal) |
| Flywheel and Flywheel Housing | SAE No. 00 |
| Flywheel Teeth | 183 |
| Rotation from Flywheel End | Counterclockwise |
|---|
| Flywheel Teeth | 183 |
|---|
Air Inlet System
- Axial flow air cleaners
- Single element canister type with service indicator
Cooling System
- Two-stage charge air cooling system
- Engine cooling and charge air cooling thermostats
Exhaust System
- Watercooled exhaust manifolds
- Dry Turbocharger housings
- Water-cooled exhaust elbow
Flywheels & Flywheel Housings
- SAE No. 00 flywheel housing
- SAE standard rotation
- SAE No. 21 Flywheel
Fuel System
- 7-40 psig gas supply
- Electronic fuel metering valve
- Gas pressure regulator
- Gas shutoff valve
- Fuel System
Instrumentation
- Remote-mounted Advisor control panel
- Interconnect harness
Lubrication System
- Crankcase breather — top mounted
- Oil cooler
- Oil filter — RH
- Oil pan — shallow
- Oil sampling valve
- Turbo oil accumulator
Mounting System
- Rails
Protection System
- Electronic shutoff system
- Gas shutoff valve
General
- Paint — Cat yellow
- Crankshaft vibration damper and guard
Power Take Offs
- Front lower LH accessory drive
- Front housing, two sided
Need installed dimensions with enclosure and tank? See Model Configurations
