Power units
C4.4
The Cat® C4.4 Industrial Power Unit is offered in ratings ranging from 61-81 bkW (81.8-108.6 bhp) @ 2200 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.
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| Maximum Power | 108.6 hp |
|---|---|
| Rated Speed | 2200 rpm |
| Minimum Power | 81.8 hp |
| Emissions | UN ECE R96 Stage IIIA |
|---|
| Engine Configuration | Inline 4, 4-Stroke-Cycle Diesel |
|---|---|
| Bore | 4.1 in |
| Stroke | 5 in |
| Displacement | 268.5 in³ |
| Compression Ratio | 18.2:1 |
| Aspiration | Turbocharged (T) |
| Rotation from Flywheel End | Counterclockwise |
| Aftertreatment | - |
| Length | 49.6 in |
|---|---|
| Width | 28.9 in |
| Height | 38 in |
| Weight | 1025 lb |
Air Inlet System
- Mounted air filter and turbocharger
Control System
- Available in 12 volt or 24 volt systems
- Starter motor 12V or 24V
Cooling System
- Fan (pusher or puller)
- Fan drive
- Radiator
- Water pump
Flywheels and Flywheel Housing
- Flywheel
- SAE No. 3 flywheel housing
Fuel System
- Fuel filter
Lube System
- Oil cooler
- Lube oil filter
- Timing case oil filler
Mountings
- Engine mounting brackets
Power Take Off (PTO)
- SAE A or SAE B front PTO (142/280 NM)
General
- Paint: Caterpillar yellow, with optional colors available at request
- Download ↓C4.4 IPU Spec Sheet
Need installed dimensions with enclosure and tank? See Model Configurations