Gas compression engines

G3512 TA

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.

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Emissions

  • Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/8

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

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 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.cat.com/oilandgas.
Engine Specifications
Maximum Rating1004 BHP
Rated Speed1400 rpm
EmissionsLean Burn: EPA NSPS Site Compliant Capable with Customer Supplied Aftertreatment, 0.5 g/bhp-hr NOx
Minimum Rating790 BHP
Displacement3158 in³
Ignition, ProtectionADEM™ A3
Air/Fuel Ratio ControlADEM™ A3
Length120 in
Width2201 mm
Height84.1 in
Weight - Dry7081 lb

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.)
  • G3512 LE Gas Engine Spec Sheet 641 & 749 bkW (860 & 1004 bhp) 1200 & 1400 rpm
    application/pdf

Need installed dimensions with enclosure and tank? See Model Configurations