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Industrial

Cat® C4.4 Diesel Engine

  • Maximum Power
    173.5 hp
  • Maximum Torque
    553 lb-ft @ 1400 rpm
  • Rated Speed
    2200 rpm
  • Minimum Power
    93.9 hp
Power Rating
Maximum Power
173.5 hp
Maximum Torque
553 lb-ft @ 1400 rpm
Rated Speed
2200 rpm
Minimum Power
93.9 hp
Emission Standards
Emissions
U.S. EPA & CARB Tier 4 Final
General
Engine Configuration
Inline 4, 4-Stroke-Cycle Diesel
Engine Configuration
Inline 4
Bore
4.1 in
Stroke
5 in
Bore
105 mm (4.13 in)
Displacement
268.5 in³
Compression Ratio
16.5:1
Stroke
127 mm (5.00 in)
Aspiration
Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Combustion System
Direct Injection
Displacement
4.4 L (268.5 in³)
Rotation from Flywheel End
Counterclockwise
Aftertreatment
DOC+SCR or DOC+DPF+SCR
Cooling System Capacity
10.8 L (11.4 qt)
Cooling System
10.8 L (11.4 qt)
Lube System
5.2-13.5 L (5.5-14.27 qt)
Lube System
5.2-13.5 L (5.5-14.27 qt)
Engine Dimensions - Approximate
Length
33.3 in
Width
29.1 in
Height
34.1 in
Weight
926 lb
Height
848.2-867.6 mm (33.4-34.1 in)
Length
845.1 mm (33.3 in)
Weight
400-420 kg (881.8-926 lb)
Width
741.6-772.4 mm (29.1-30.4 in)
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
400-420 kg (881.8-926 lb)
Aftertreatment Dimensions
Length
26.5 in
Width
18.8 in
Height
15.3 in
Weight
99 lb
Aftertreatment Dimensions*
Diameter
10.6 in
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)
Aftertreatment Dimensions - Approximate
Diameter
224.9-270.3 mm (9.6-10.6 in)
Height
279-430 mm (11-16.9 in)
Length
647-828 mm (25.5-32.6 in)
Weight
34-80 kg (75-17;6.4 lb)
Width
365-695 mm (14.3-27.4 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
  • 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 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