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SPECS SUMMARY

Maximum Power173.5 HP (129.4 kW)
Maximum Torque553.2 lb-ft @ 1400 rpm (750 Nm @ 1400 rpm)
EmissionsU.S. EPA Tier 4 Final
Rated Speed2200 rpm
The Cat® C4.4 Industrial Power Unit is offered in ratings ranging from 74.5-129.4 bkW (100-173.5 bhp) @ 2200 rpm, which meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. Tier 4 Interim Equivalent and Stage IIIB Equivalent ratings are also available using Flex options. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

Specifications

Maximum Power173.5 HP (129.4 kW)
Maximum Torque553.2 lb-ft @ 1400 rpm (750 Nm @ 1400 rpm)
EmissionsU.S. EPA Tier 4 Final
Rated Speed2200 rpm
Minimum Power100 HP (74.5 kW)
Engine ConfigurationInline 4, 4-Stroke-Cycle Diesel
Bore4.1 in (105 mm)
Stroke5 in (127 mm)
Displacement268.5 in³ (4.4 l)
Compression Ratio16.0:2
AspirationTurbocharged Aftercooled (TA) or Twin Turbocharged Aftercooled (TTA)
Rotation from Flywheel EndCounterclockwise
AftertreatmentDOC+DPF+SCR
Length56.4 in (1433 mm)
Width32.3 in (820 mm)
Height45.3 in (1150 mm)
Weight1543 lb (700 kg)
Width27.4 in (695 mm)
Height16.9 in (430 mm)
Diameter10.6 in (270 mm)
Weight176 lb (80 kg)

Benefits and Features

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and increased torque.

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program


Regeneration. The DOC/SCR modular design offers a simple, compact package while providing high levels of performance. A DOC/DPF/SCR option is available for higher power machines. While in use, both DOC/SCR an DOC/DPF/SCR systems offer transparent operation to the user.


Mounting. Extensive range of inlets and outlets, as well as remote and on-engine installations, provide flexibility for many installations.
Service. Both DOC/SCR an DOC/DPF/SCR systems are service-free for the emissions life of the engine.

Standard Equipment

  • Standard air cleaners
  • 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
  • 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
  • Wide choice of drivetrain interfaces, including SAE No. 2 and SAE No. 3 configurations
  • Electronic high pressure common rail
  • ACERT™ Technology
  • Innovative filter design to ensure maximum protection of the engine
  • Wide choice of sumps for different applications
  • 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.
  • Available with or without a balancer
  • Paint: Caterpillar yellow, with optional colors available at request
  • Diesel Oxidation Catalyst (DOC) / Selective Catalytic Reduction (SCR)
  • Diesel Particulate Filter (DPF) / Selective Catalytic Reduction (SCR)
  • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
  • No ash service requirement
  • Passive regeneration