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New Equipment

Caterpillar

Cat® C4.4 Diesel Engine

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.

Photos

  • C4.4 Tier 4 Diesel Engines - Highly Regulated
    C4.4 Tier 4 Diesel Engines - Highly Regulated

360° View

Exterior

360° Exterior view. Double click on the image to zoom in on any area of the product.

Features

Reliable, Quiet and Durable Power

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

High Performance

High Performance

Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and increased torque.

High Performance

Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and increased torque.

Fuel Efficiency

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel & Oil

Fuel & Oil

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Fuel & Oil

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Broad Application Range

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Package Size

Package Size

Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.

Package Size

Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.

Low Cost Maintenance

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Hydraulic tappets, multi-vee belts, "no ash service" aftertreatment, and 500-hour oil change intervals enable low-cost maintenance. Many service items have a choice of location on either side of the engine to enable choice of service access. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Hydraulic tappets, multi-vee belts, "no ash service" aftertreatment, and 500-hour oil change intervals enable low-cost maintenance. Many service items have a choice of location on either side of the engine to enable choice of service access. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.

Quality

Quality

Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

Quality

Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

Tier 4 Interim, Stage IIIB Aftertreatment Features

Tier 4 Interim, Stage IIIB Aftertreatment Features


Regeneration. Passive regeneration completely transparent to the operator.
Mounting. Extensive range of inlets and outlets, as well as remote off- and on-engine installations, provide flexibility for many installations.
Service. Service-free DPF for the emissions life of the engine.

Tier 4 Interim, Stage IIIB Aftertreatment Features


Regeneration. Passive regeneration completely transparent to the operator.
Mounting. Extensive range of inlets and outlets, as well as remote off- and on-engine installations, provide flexibility for many installations.
Service. Service-free DPF for the emissions life of the engine.

Tier 4 Final, Stage IV Aftertreatment Features

Tier 4 Final, Stage IV Aftertreatment Features


Regeneration. The DOC/SCR modular design offers a simple, compact package while providing high levels of performance. A DOC/DPF/SCR option is available for higher power machines. While in use, both DOC/SCR an DOC/DPF/SCR systems offer transparent operation to the user.
Mounting. Extensive range of inlets and outlets, as well as remote and on-engine installations, provide flexibility for many installations.
Service. Both DOC/SCR an DOC/DPF/SCR systems are service-free for the emissions life of the engine.
Available in 12V or 24V systems

Tier 4 Final, Stage IV Aftertreatment Features


Regeneration. The DOC/SCR modular design offers a simple, compact package while providing high levels of performance. A DOC/DPF/SCR option is available for higher power machines. While in use, both DOC/SCR an DOC/DPF/SCR systems offer transparent operation to the user.
Mounting. Extensive range of inlets and outlets, as well as remote and on-engine installations, provide flexibility for many installations.
Service. Both DOC/SCR an DOC/DPF/SCR systems are service-free for the emissions life of the engine.
Available in 12V or 24V systems

Specifications

  • Power Rating
    Spec Value
    Maximum Power 173.5 HP
    Maximum Torque 553 lb-ft @ 1400 rpm
    Rated Speed 2200 rpm
    Minimum Power 93.9 HP
  • Emission Standards
    Spec Value
    Emissions U.S. EPA & CARB Tier 4 Final
  • General
    Spec Value
    Engine Configuration Inline 4
    Bore 4.1 in
    Stroke 5 in
    Displacement 268.5 in³
    Compression Ratio 16.5:1
    Aspiration Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
    Combustion System Direct Injection
    Rotation from Flywheel End Counterclockwise
    Aftertreatment DOC+SCR or DOC+DPF+SCR
  • Engine Dimensions - Approximate
    Spec Value
    Length 33.3 in
    Width 29.1 in
    Height 34.1 in
    Weight - Net Dry - Basic Operating Engine Without Optional Attachments 926 lb
  • Aftertreatment Dimensions
    Spec Value
    Length 26.5 in
    Width 18.8 in
    Height 15.3 in
    Weight 99 lb
  • Aftertreatment Dimensions*
    Spec Value
    Diameter 10.6 in

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