G3512/G3512B

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Overview

The Cat® G3512 and G3512B Industrial Gas Engines are offered in the following ratings: 589-642 bkW (790-860 bhp) @ 1200 rpm and 749-772 bkW (1004-1035 bhp) @ 1400 rpm. These ratings are NSPS site compliant capable with customer-supplied aftertreatment. For specific emission information, please consult your local Cat Dealer.

Power Rating

Units:
Minimum Power 790.0 bhp 589.0 bkW Less
Maximum Power 1035.0 bhp 772.0 bkW Less
Frequency 1200-1400 rpm 1200-1400 rpm Less

General

Bore 170 mm (6.7 in) 170 mm (6.7 in) Less
Stroke 190 mm (7.5 in) 190 mm (7.5 in) Less
Displacement 51.8 L (3158 in³) 51.8 L (3158 in³) Less
Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA) Less
Engine Configuration Engine - Continuous Engine - Continuous Less

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Weight, Net Dry 4950 kg (10913 lb) 4950 kg (10913 lb) Less
Height 2136 mm (84.1 in) 2136 mm (84.1 in) Less
Width 2220 mm (87.4 in) 2220 mm (87.4 in) Less
Length 3023 mm (119 in) 3023 mm (119 in) Less

Emissions

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

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

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.

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 Cat Industrial Service Distributor (ISD) program

G3512/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

G3512/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

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