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Cat® C4.4 Diesel Engine

The Cat® C4.4 Naturally Aspirated (NA) Industrial Diesel Engine is offered in ratings ranging from 54-56 bkW (72.4-75 bhp) @ 2200 rpm. These ratings meet EU Stage IIIA equivalent emission standards. Turbocharged (T) and Turbocharged Aftercooled (TA) Ratings are also available, ranging from 55.5-83 bkW (74.4-111.3 bhp) @ 2200-2400 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C4.4 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.

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    • Emission Standards
      Emissions
      UN ECE R96 Stage IIIA
    • Engine Dimensions - Approximate
      Height
      30.5 in
      Length
      26.1 in
      Weight - Net Dry - Basic Operating Engine Without Optional Attachments
      674.6 lb
      Width
      23.7 in
    • General
      Aftertreatment
      -
      Aspiration
      Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA)
      Bore
      4.1 in
      Combustion System
      Direct Injection
      Compression Ratio
      18.2:1
      Displacement
      269 in³
      Engine Configuration
      Inline 4, 4-Stroke-Cycle Diesel
      Rotation from Flywheel End
      Counterclockwise
      Stroke
      5 in
    • Power Rating
      Maximum Power
      111.3 HP
      Maximum Torque
      308 lb-ft @ 1400 rpm
      Minimum Power
      72.4 HP
      Rated Speed
      2200-2400 rpm
    Air Inlet System
    • Inlet manifold with choice of inlets.
    Control System
    • Alternator
    • Starter motor
    • Control Panel
    • Glow plug starting aid
    Cooling System
    • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
    • 50:50 water glycol mix
    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
    • Timing case and gear-driven auxiliaries
    • Belt-driven auxiliaries
    • Engine mountings
    • Gauges
    • Displays
    • Power and torque curve tailoring
    • Paint: Caterpillar yellow, with optional colors available at request