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Industrial Diesel Engines - 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™ Diesel Engine

Cat® C4.4 ACERT Industrial Diesel Engines offer the perfect balance of durability, fuel efficiency and low emissions. Extensively tested on the job, these engines use a range of common rail fuel systems and advanced control systems to deliver maximum uptime in the harshest environment. They have proven they can handle the toughest applications and deliver superior performance that exceeds the expectations of the most demanding users. Industries and applications powered by C4.4 ACERT engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Harvesters, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers, Turf and Landscaping and Underground Mining Equipment.

Product Details

Power Rating

Minimum Power 65.9 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 (4.13 in)
Stroke 127 mm (5.00 in)
Displacement 4.4 L (268.5 in³)
Aspiration Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Compression Ratio 16.5:1
Combustion System Direct Injection
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 10.8 L (11.4 qt)
Lube System (refill) 5.2-13.5 L (5.5-14.27 qt)

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

Length 845.1 mm (33.3 in)
Width 741.6-772.4 mm (29.1-30.4 in)
Height 848.2-867.6 mm (33.4-34.1 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments) 400-420 kg (881.8-926 lb)

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

Length 647-828 mm (25.5-32.6 in)
Width 365-695 mm (14.3-27.4 in)
Height 279-430 mm (11-16.9 in)
Weight 34-80 kg (75-17;6.4 lb)
Diameter 224.9-270.3 mm (9.6-10.6 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
  • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
    • 50:50 water glycol mix
      • 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
        •  ACERT™ Technology
        •  Innovative filter design to ensure maximum protection of the engine
      • Lube System
        •  Wide choice of sumps for different applications
      • 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 Interim Equivalent, EU Stage IIIB Equivalent 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
        • U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment/ Clean Emissions Control Equipment
          •  Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
          •  Selective Catalytic Reduction (SCR)
          •  3" flex pipe connection with straight, 45°, and 90° options for flexibility
        • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
          • Selective Catalytic Reduction (SCR)
            • 3" flex pipe connection with straight, 45°, and 90° options for flexibility
              Built for it