3512E DGB

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The new land well service 3512E Dynamic Gas Blending™ dual fuel engine will be certified to U.S. EPA Tier 4 Final emissions standard while offering the highest natural gas substitution in its class. The 3512E DGB will include factory solutions that emit approximately the same or less greenhouse gas (GHG) emissions as a comparable 3512E Tier 4 Final diesel engine. Additionally, the dual fuel performance of the new 3512E DGB has significantly increased compared to similar engines in its class with the ability to achieve 85% diesel displacement, further allowing for lower operating costs.

General Specifications

Minimum Rating 2250.0 BHP 1678.0 bkW Less
Maximum Rating 2500.0 BHP 1864.0 bkW Less
Aspiration SCAC and ATAAC SCAC and ATAAC Less
Displacement 3596.0 in³ 58.9 l Less
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0 Less
Flywheel Teeth 151 151 Less
Stroke 8.5 in 215.0 mm Less
Bore 6.7 in 170.0 mm Less
Governor and Protection Electronic (ADEM™ A5) / DGB System (ADEM™ A6) Electronic (ADEM™ A5) / DGB System (ADEM™ A6) Less
Rotation from Flywheel End Counterclockwise Counterclockwise Less


Emissions U.S. EPA Tier 4 Final U.S. EPA Tier 4 Final Less


Length 138.0 in 3494.0 mm Less
Width 91.0 in 2308.0 mm Less
Height 108.0 in 2747.0 mm Less
Weight NaN lb 10139.0 kg Less

Capacity for Liquids

Lube Oil System - Refill NaN gal (US) NaN l Less
Cooling System 52.0 gal (US) 197.0 l Less

Engine Design

  • Proven reliability and durability
  • Robust diesel strength design prolongs life and lowers owning and operating costs
  • Broad operating speed range
  • Air shutoff – integrated with engine controls
  • EGR/Diesel Oxidation Catalyst (DOC)/common rail fuel system to meet Tier 4 Final/Stage IV emission standards
  • DEF free solution – eliminates the storage, logistics, and issues involved with SCR/DEF design engines
  • Individual cylinder based gas injection system.
  • Engine mounted DGB controls.
  • Engine mounted Gas filter, water coalescing type

Cooling System

Separate Circuit Aftercooler (SCAC) and Air-to-Air-Aftercooler (ATAAC)

Engine-Mounted Package

Integrates with engine, aftertreatment, heavy-duty air cleaners, residential grade mufflers available in stainless or carbon steel

Engine-Mounted Transmission Oil Cooler

Integration with engine cooling system allows ease of installation and a tighter overall engine package

Advanced Digital Engine Management

ADEM A6 DGB based controls seamlessly integrated with A5 engine management system.

Custom Packaging

For any petroleum application, trust Caterpillar to meet your exact needs with a factory custom package. Cat engines, generators, enclosures, controlsCustom Packaging , radiators, transmissions – anything your project requires – can be custom designed and matched to create a one-of-a kind solution. Custom packages are globally supported and are covered by a one-year warranty after startup.

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


Every engine is full-load tested with diesel fuel and with natural gas to ensure proper engine performance.

Product Support Offered Through Global Cat Dealer Network

  • 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 repair-before-failure options

S•O•SSM program matches your oil and coolant samples

  • 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

Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.

  • Cast engine blocks, heads, cylinder liners, front and flywheel housings
  • Machine critical components
  • Assemble complete engine

Web Site

For all your oil & gas power requirements, visit: www.cat.com/oilandgas

3512E DGB Standard Equipment

Control System
  • Cat ADEM A6 DGB controls

Cooling System
  • Thermostats and housing, jacket and separate circuit water pump, gear-driven centrifugal
  • SCAC/ATAAC system

Exhaust System
  • Dual DOC
  • Exhaust manifold, dry, bellows connection
  • Four turbochargers with watercooled bearings
  • Exhaust outlet, dual 10-inch ANSI round flange as part of aftertreatment

Flywheels & Flywheel Housing
  • Flywheel, SAE No. 0, 151 teeth

Fuel System
  • Engine mounted Gas filter, water coalescing type
  • Clean fuel module boost pump
  • Fuel transfer pump
  • Common rail fuel system
  • Primary/secondary fuel filters
  • Fuel priming pump (electric)

  • Product LinkTM engine monitoring

  • Vibration damper and guard
  • Lifting eyes
  • Paint - Caterpillar yellow

Lube System
  • Closed Crankcase ventillation - top mounted
  • Fumes disposal
  • Oil filter - RH spin-on type
  • Oil cooler
  • Oil filler and dipstick - LH
  • Oil scavenger pump
  • Oil pump
  • Oil pan drain valve, 1" NPT female connection

Mounting System
  • Trunion front support
  • Flywheel housing - two-sidedfailure options

Protection System
  • Emergency stop logic inputs provided at 70-pin customer interface connection
  • ADEM A5 and A6 ECU system to provide customer programmable engine deration strategies to protect against adverse operating conditions

Aftertreatment Mounting
  • CEM/muffler support package Heavy-duty air cleaners (2 element with precleaners)

3512E DGB Optional Equipment

Charging System
  • 80, 95, or 150 amp charging alternator

Control System
  • Local speed throttle control
  • Throttle position sensors

Cooling System
  • Coolant conditioner
  • JW outlet coupling-style connections
  • JW inlet weld-flange connection
  • SCAC/ATAAC inlet and outlet coupling-style connections
  • JW inlet and outlet hose barb connections
  • SCAC/ATAAC inlet and outlet hose barb connections Water level switch gauge
  • JW Heater installation connections

Exhaust System
  • Flex pipe kit
  • Residential mufflers (painted steel and stainless steel) with outlet elbow and rain cap

Flywheels & Flywheel Housing
  • Allison and Twin Disc flywheel options

  • Product Link harness extensions
  • LAN adapters

Lube System
  • Rear sump oil pan - 250-hour change interval
  • Front deep sump oil pan - 500-hour change interval

Power Take-Offs
  • Front Crankshaft Adapter
  • Front crankshaft stub shaft
  • Accessory drive - upper RH

Protection System
  • Hydraulic actuated air shutoff

Starting System
  • Dual hydraulic starter - LH
  • Manual engine barring device
  • Hydraulic starter - LH
  • EIRS automatic start/stop system is available on factory orders as an attachment

Transmission Attachments
  • Transmission oil cooler
  • Transmission oil cooler 2-1 connections
  • Torque converter connections

  • Air compressor