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Industrial Diesel Power Units - 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 Industrial Power Unit

The Cat® C4.4 Industrial Power Unit is offered in ratings ranging from 61-81 bkW (81.8-108.6 bhp) @ 2200 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. 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.

  • Specification Summary

  • Maximum Power 81 kW
  • Rated Speed 2200 rpm
  • Minimum Power 61 kW
  • Emissions UN ECE R96 Stage IIIA

Product Details

Power Rating

Maximum Power 81 kW
Rated Speed 2200 rpm
Minimum Power 61 kW

Emission Standards

Emissions UN ECE R96 Stage IIIA

General

Engine Configuration Inline 4, 4-Stroke-Cycle Diesel
Bore 105 mm
Stroke 127 mm
Displacement 4.4 l
Compression Ratio 18.2:1
Aspiration Turbocharged (T)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -

Power Unit Dimensions

Length 1260 mm
Width 734 mm
Height 964 mm
Weight 465 kg
  • Air Inlet System
    •  Mounted air filter and turbocharger
  • Mounted air filter and turbocharger
    • Control System
      •  Available in 12 volt or 24 volt systems
      •  Starter motor 12V or 24V
    • Available in 12 volt or 24 volt systems
      • Starter motor 12V or 24V
        • Cooling System
          •  Fan (pusher or puller)
          •  Fan drive
          •  Radiator
          •  Water pump
        • Flywheels and Flywheel Housing
          •  Flywheel
          •  SAE No. 3 flywheel housing
        • Fuel System
          •  Fuel filter
        • Fuel filter
          • Lube System
            •  Oil cooler
            •  Lube oil filter
            •  Timing case oil filler
          • Mountings
            •  Engine mounting brackets
          • Engine mounting brackets
            • Power Take Off (PTO)
              •  SAE A or SAE B front PTO (142/280 N?M)
            • SAE A or SAE B front PTO (142/280 N?M)
              • General
                •  Paint: Caterpillar yellow, with optional colors available at request

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