C4.4 Tier 4  Diesel Engines - Highly Regulated

Industrial Diesel Engines C4.4

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Key Specs

Maximum Power
173.5 HP
129.4 kW
Maximum Torque
553 lb-ft @ 1400 rpm
750 Nm @ 1400 rpm
Emissions
U.S. EPA & CARB Tier 4 Final
U.S. EPA & CARB Tier 4 Final

Overview

The Cat® C4.4 Industrial Diesel Engine is offered in ratings ranging from 74-129.4 bkW (99-173.5 bhp) @ 2200 rpm, which meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. U.S. EPA Tier 4 Interim equivalent and EU Stage IIIB equivalent ratings are also available using U.S. EPA and EU Flex provisions.

Product Specifications for C4.4

Maximum Power 173.5 HP 129.4 kW
Maximum Torque 553 lb-ft @ 1400 rpm 750 Nm @ 1400 rpm
Rated Speed 2200 rpm 2200 rpm
Minimum Power 93.9 HP 70 kW
Emissions U.S. EPA & CARB Tier 4 Final U.S. EPA & CARB Tier 4 Final
Engine Configuration Inline 4 Inline 4
Bore 4.1 in 105 mm
Stroke 5 in 127 mm
Displacement 268.5 in³ 4.4 l
Compression Ratio 16.5:1 16.5:1
Aspiration Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Combustion System Direct Injection Direct Injection
Rotation from Flywheel End Counterclockwise Counterclockwise
Aftertreatment DOC+SCR or DOC+DPF+SCR DOC+SCR or DOC+DPF+SCR
Length 33.3 in 845 mm
Width 29.1 in 742 mm
Height 34.1 in 868 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 926 lb 420 kg
Length 26.5 in 675 mm
Width 18.8 in 478 mm
Height 15.3 in 390 mm
Weight 99 lb 45 kg
Diameter 10.6 in 270 mm

C4.4 Standard Equipment

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

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