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Industrial Diesel Power Units - Highly 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 ACERT™ Industrial Power Unit

The Cat® C4.4 ACERT™ 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.

Product Details

Power Rating

Minimum Power 74.5 bkW
Maximum Power 129.4 bkW
Frequency 2200 rpm

Emission Standards

Emissions U.S. EPA Tier 4 Final, EU Stage IV

General

Engine Configuration Inline 4, 4-Stroke-Cycle Diesel
Bore 105 mm (4.1 in)
Stroke 127 mm (5.0 in)
Displacement 4.4 L (268.5 in³)
Aspiration Turbocharged Aftercooled (TA) or Twin Turbocharged Aftercooled (TTA)
Compression Ratio 16:2
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 9-9.4 L (8.2-8.5 qt)
Lube System (refill) 5.2-13.5 L (5.5-14.27 qt)

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

Length 1433 mm (56.4 in)
Width 795-820 mm (31.3-32.3 in)
Height 1126-1150 mm (44.3-45.3 in)
Weight - Approximate, Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C) 670-700 kg (1477-1543 lb)

Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)

Diameter 244.9-270.3 mm (9.6-10.6 in)
Width 365-695 mm (14.3-27.4 in)
Height 279-430 mm (11-16.9 in)
Weight 34-80 kg (75-176.4 lb)
  • 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
  • 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
      • Wide choice of drivetrain interfaces, including SAE No. 2 and SAE No. 3 configurations
        • Fuel System
          •  Electronic high pressure common rail
          •  ACERT™ Technology
          •  Innovative filter design to ensure maximum protection of the engine
        • Electronic high pressure common rail
          • ACERT™ Technology
            • 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.
              • 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
                • Available with or without a balancer
                  • Paint: Caterpillar yellow, with optional colors available at request
                    • U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment / Clean Emissions Control Equipment
                      •  Diesel Oxidation Catalyst (DOC) / Selective Catalytic Reduction (SCR)
                      •  Diesel Particulate Filter (DPF) / Selective Catalytic Reduction (SCR)
                    • U.S. EPA Tier 4 Interim, EU Stage IIIB Aftertreatment / Clean Emissions Control Equipment
                      •  Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
                      •  No ash service requirement
                      •  Passive regeneration
                    Built for it