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Industrial Diesel Engines - Lesser Regulated & Non-Regulated

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® C4.4 ACERT™ Diesel Engine

The Cat® C4.4 ACERT Industrial Diesel Engine is offered in ratings ranging from 61.5-106 bkW (74.5-100 bhp) @ 2200 rpm. These ratings meet EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C4.4 ACERT engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Harvesters, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers, Turf and Landscaping and Underground Mining Equipment.

  • Specification Summary

  • Minimum Power 61.5 bkW
  • Maximum Power 106 bkW
  • Rated Speed 2200 rpm
  • Emissions China Nonroad III, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent

Product Details

Power Rating

Minimum Power 61.5 bkW
Maximum Power 106 bkW
Rated Speed 2200 rpm

Emission Standards

Emissions China Nonroad III, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent


Engine Configuration Inline 4, 4-Stroke-Cycle Diesel
Bore 105 mm (4.13 in)
Stroke 127 mm (5.0 in)
Aspiration Turbocharged (T) or Turbocharged Aftercooled (TA)
Displacement 4.4 L (269 in³)
Compression Ratio 16.2:1
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Lube System - Refill 11 L (11.6 qt)

Engine Dimensions - Approximate

Height 823.5 mm (32.4 in)
Length 631 mm (24.8 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 360 kg (793.7 lb)
Width 626 mm (24.65 in)
  • Air Inlet System
    •  Inlet manifold with choice of inlets.
  • Control System
    •  Alternator
    •  Starter motor
    •  Glow plug starting aid
  • Cooling System
    • Flywheels and Flywheel Housing
      •  SAE No. 3 flywheel housing
      •  Flywheel and starter rings
    • Fuel System
      •  Fuel filter positions
    • Lube System
      •  Lubricating oil filters and breathers
      •  Oil filter positions
      •  Lube oil sump
    • Power Take Off
      •  SAE B Power Take Off (PTO)
    • General
      •  Paint: Caterpillar yellow, with optional colors available at request
      •  Timing case and gear-driven auxiliaries
      •  Belt-driven auxiliaries
      •  Engine mountings
      •  Gauges
      •  Displays
      •  Power and torque curve tailoring

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