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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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