Cat® C4.

4 ACERT™ Diesel Engine

Industrial

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.
Specifications
Power Rating
Minimum Power 65.9 bkW 88.4 BHP
Maximum Power 129.4 bkW 173.5 BHP
Rated Speed 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

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Cat® C4.4 ACERT™ Diesel Engine
Industrial

Height 848.2-867.6 mm (33.4-34.1 in)

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

Benefits and Features

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
Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and
increased torque.
Fuel Efficiency
Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while
maintaining low operating costs.
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
Industry leading range of factory configurable ratings and options for agricultural, material handling, construction,
mining, aircraft ground support, and other industrial applications.
Package Size
Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.
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
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

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Cat® C4.4 ACERT™ Diesel Engine
Industrial

• 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

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

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

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
• ACERT™ Technology
• Innovative filter design to ensure maximum protection of the engine
Lube System

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Cat® C4.4 ACERT™ Diesel Engine
Industrial

• 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

The International System of Units (SI) is used in this publication. CAT, CATERPILLAR, their
respective logos, ADEM, EUI, S•O•S, "Caterpillar Yellow" and the "Power Edge" trade dress, as well
as corporate and product identity used herein, are trademarks of Caterpillar and may not be used
without permission.

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