G3508/G3508B

Cat® G3508 Industrial Gas Engine. Ratings: 391 bkW (524 bhp) @ 1200 rpm and 500-514 bkW (670-690 bhp) @ 1400 rpm are NSPS site compliant capable with customer-supplied aftertreatment. For specific emission information, please consult your local Cat Dealer.


SPECIFICATIONS
Power Rating
Minimum Power 524 BHP
Maximum Power 690 BHP
Frequency 1200-1400 rpm


General
Bore 170 mm (6.7 in)
Stroke 190 mm (7.5 in)
Displacement 34.5 L (2105 in³)
Aspiration Turbocharged Aftercooled (TA)
Engine Configuration Engine - Continuous


Engine Dimensions - Approximate
Height 2131 mm (84 in)
Length 2522 mm (99 in)
Weight - Net Dry 3941 kg (8688 lb)
Width 2014 mm (79 in)


BENEFITS & FEATURES
Emissions


Ratings are NSPS site compliant capable with customer-supplied aftertreatment. For specific emission information, please consult your local Cat Dealer.

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

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.

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.

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

Quality


Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network


  • Scheduled maintenance, including S•O•SSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the CatIndustrial Service Distributor (ISD) program

EQUIPMENT
Standard Equipment

Air Inlet System
  • Remote air inlet adapters
Charging System
  • Battery chargers
Cooling System
  • Jacket water thermostats and housing — full opentemperature 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 opentemperature 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

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