The Cat™ C4.4 Naturally Aspirated (NA) Industrial Diesel Engine is offered in ratings ranging from 54-56 bkW (72.4-75 bhp) @ 2200 rpm. These ratings meet EU Stage IIIA equivalent emission standards. Turbocharged (T) and Turbocharged Aftercooled (TA) Ratings are also available, ranging from 55.5-83 bkW (74.4-111.3 bhp) @ 2200-2400 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C4.4 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.
Features
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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.
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Package Size
Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.
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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
Specifications
Units for specifications
Power Rating
| Maximum Power | 111.3 hp 83 kW |
|---|---|
| Maximum Torque | 308 lb-ft @ 1400 rpm 418 Nm @ 1400 rpm |
| Rated Speed | 2200-2400 rpm |
| Minimum Power | 72.4 hp 54 kW |
Emission Standards
| Emissions | UN ECE R96 Stage IIIA |
|---|
General
| Engine Configuration | Inline 4, 4-Stroke-Cycle Diesel |
|---|---|
| Bore | 4.1 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 269 in³ 4.4 l |
| Compression Ratio | 18.2:1 |
| Aspiration | Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA) |
| Combustion System | Direct Injection |
| Rotation from Flywheel End | Counterclockwise |
| Aftertreatment | - |
Engine Dimensions - Approximate
| Length | 26.1 in 663 mm |
|---|---|
| Width | 23.7 in 602 mm |
| Height | 30.5 in 775 mm |
| Weight - Net Dry - Basic Operating Engine Without Optional Attachments | 674.6 lb 306 kg |
Standard Equipment
Air Inlet System
- Inlet manifold with choice of inlets.
Control System
- Alternator
- Starter motor
- Control Panel
- Glow plug starting aid
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
- SAE No. 3 flywheel housing
- Flywheel and starter rings
Fuel System
- Fuel filter positions
Lube System
- Lubricating oil filters and breathers
- Oil filter positions
- Lube oil sump
Power Take Off
- SAE B Power Take Off (PTO)
General
- Timing case and gear-driven auxiliaries
- Belt-driven auxiliaries
- Engine mountings
- Gauges
- Displays
- Power and torque curve tailoring
- Paint: Caterpillar yellow, with optional colors available at request