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Overview

The line of G3500B engines brings versatility, uptime, and low operating cost to your gas compression operation. They deliver the lowest engine-out emissions in the industry without sacrificing performance. Ideal applications for G3500B engines include gas lift, gas gathering, and wellhead gas compression. Cat G3512B gas engine. Ratings: 772 bkW (1035 bhp) @ 1400 rpm are NSPS site compliant capable.

Engine Specifications

Units:
Minimum Rating 1035.0 bhp 772.0 bkW Less
Emissions NSPS Site Compliant Capable NSPS Site Compliant Capable Less
Ignition, Protection ADEM™ A3 ADEM™ A3 Less

Engine Design

- Built on G3500 LE 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 at lower site air densities (high altitude/hot ambient temperatures) - Higher power density improves fleet management - Quality engine diagnostics - Detonation-sensitive timing control for individual cylinders

Ultra Lean Burn Technology (ULB)

ULB technology uses an advanced control system, a better turbo match, improved air and fuel mixing, and a more sophisticated combustion recipe to provide: - Lower environmental impact - Higher return on investment - Lower operating costs - Higher work force efficiency

Emissions

- Capable of meeting U.S. EPA Spark Ignited Stationary NSPS emissions for 2010 and some non-attainment areas - Lean air/fuel mixture provides best available emissions and fuel efficiency for engines of this bore size

Advanced Digital Engine Management

ADEM A3 engine management system integrates speed control, air/fuel ratio control, and ignition/detonation controls into a complete engine management system. ADEM A3 has improved: user interface, display system, shutdown controls, and system diagnostics.

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 PC-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.catoilandgasinfo.com

G3512B Standard Equipment

Air Inlet System
  • Axial flow air cleaner
  • Cleanable
  • Single element canister type with service indicator

Control System
  • ADEM A3 with integrated electronic throttle control
  • CSA certified

Cooling System
  • Two-stage charge air cooling
  • Thermostats and housing
  • Gear-driven jacket and aftercooler water pump
  • Stainless steel aftercooler cores

Exhaust System
  • Dry exhaust manifolds
  • Exhaust outlet: 200 mm I.D.

Flywheels and Flywheel Housings
  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation

Fuel System
  • 7-50 psi gas supply
  • Electronic fuel metering valve
  • Gas pressure regulator, pivot valve operated

Ignition System
  • ADEM A3
  • Outdoor CSA certified

Lubrication System
  • Crankcase breather — top mounted
  • Oil cooler
  • Oil filter — RH
  • Oil pan
  • Oil sampling valve
  • Turbo oil accumulator

Power Take-Offs
  • Front housing — two-sided
  • Front lower — LH accessory drive

Torsional Vibration Analysis
  • Provided through Caterpillar

General
  • Paint — Cat yellow
  • Crankshaft vibration damper and guard

G3512B Optional Equipment

Air Inlet System
  • Round air inlet adaptors

Charging System
  • Battery chargers
  • CSA certified version available with

Cooling System
  • Mechanical joint assembly connections

Exhaust System
  • Flexible fittings
  • Elbows
  • Flanges

Fuel System
  • Gas filter

Instrumentation
  • Advisor display panel
  • Communications module

Lubrication System
  • Lubricating oil
  • Oil bypass filter
  • Air prelube pump

Power Take-Offs
  • Front stub shaft
  • Pulleys

General
  • Special paint

EU Certification
  • EEC DOI certification

Support
  • Factory commissioning

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
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