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Cat® C4.4 Diesel Engine
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.
Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and increased torque.
Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.
Fuel & Oil
Tier 4 Final/Stage V 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.
Exceptional power density enables standardization across numerous applications. Multiple installation options minimize total package size. Ideal for equipment with narrow engine compartments.
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.
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
- 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 Final, Stage V Aftertreatment Features
Regeneration. The DOC/DPF/SCR modular design offers a simple, compact package while providing high levels of performance.While in use, the 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. The DOC/DPF/SCR systems are service-free for the emissions life of the engine.
Available in 12V or 24V systems
|Minimum Power||82 kW (109 HP)|
|Maximum Power||150 kW (200 HP)|
|Rated Speed||2200 rpm|
|Emissions||U.S. EPA Tier 4 Final, EU Stage V|
|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 inu00b3)|
|Aspiration||Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)|
|Combustion System||Direct Injection|
|Rotation from Flywheel End||Counterclockwise|
|Engine Dimensions - Approximate|
|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 Optional Attachments||400-420 kg (881.8-926 lb)|
|Width||741.6-772.4 mm (29.1-30.4 in)|
|Aftertreatment Dimensions - Approximate|
|Length||610-675 mm (24.0-26.5 in)|
|Height||390-453 mm (15.3-17.8 in)|
|Width||478-623 mm (18.8-24.5 in)|
|Weight||45-65 kg (99-143.3 lb)|
- 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
- Fitted with SAE3 configuration as standard
- 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.
- Available with or without a balancer
- Paint: Caterpillar yellow, with optional colors available at request
- U.S. EPA Tier 4 Final, EU Stage V 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