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Cat® C4.4 Industrial Power Unit

The C4.4 IPU engine is a common rail direct injection engine with either a single turbo or twin turbo chargecooled air system. It meets U.S. EPA Tier 4 Final, EU Stage V and Japan 2014 (Tier 4 Final) emission standards. For ease of installation, the IPU provides full aftertreatment mounting, an integrated cooling system and inlet air filter mounted to the IPU.

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    • Emission Standards
      Emissions
      EU Stage V, U.S. EPA Tier 4 Final, Japan 2014 (Tier 4 Final)
    • General
      Aftertreatment
      DOC+DPF+SCR
      Aspiration
      Turbocharged Aftercooled (TA) or Twin Turbocharged Aftercooled (TTA)
      Bore
      4.1 in
      Compression Ratio
      16.0:2
      Displacement
      268.5 in³
      Engine Configuration
      Inline 4, 4-Stroke-Cycle Diesel
      Rotation from Flywheel End
      Counterclockwise
      Stroke
      5 in
    • Power Rating
      Maximum Power
      188 HP
      Maximum Torque
      601 lb-ft @ 1400 rpm
      Minimum Power
      137 HP
      Rated Speed
      2000 - 2200 rpm
    • Power Unit Dimensions
      Height
      53.7 in
      Length
      60.3 in
      Weight
      1559 lb
      Width
      34.2 in
    Air Inlet System
    • Standard air cleaners
    Control System
    • Full electronic control system, all connectors and wiring looms waterproof and designed to withstand harsh off-highway environments
    • Flexible and configurable software features and well-supported SAE J1939 CAN bus enables highly integrated machines
    Cooling System
    • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
    • 50:50 water glycol mix
    • Guidance on cooling system design available through your dealer to ensure equipment reliability
    Flywheels and Flywheel Housing
    • Wide choice of drivetrain interfaces, including SAE No. 2 and SAE No. 3 configurations
    Fuel System
    • Electronic high pressure common rail
    • Innovative filter design to ensure maximum protection of the engine
    Lube System
    • Wide choice of sumps for different applications
    Power Take Off
    • SAE A and SAE B flanges on left-hand side. Additional SAE A flange available on left-hand side. Engine power can also be taken from the front of the engine on some applications. Factory fitted compressors are also available.
    General
    • Available with or without a balancer
    • Paint: Caterpillar yellow, with optional colors available at request
    U.S. EPA TIER 4 FINAL, EU STAGE V AFTERTREATMENT, JAPAN 2014 (TIER 4 FINAL) / CLEAN EMISSIONS CONTROL EQUIPMENT
    • Diesel Oxidation Catalyst (DOC) / Diesel Particulate Filter (DPF) / Selective Catalytic Reduction (SCR)
    • No ash service requirement
    • Passive regeneration

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