Cat® C4.4 Industrial Power Unit
The C4.4 IPU engine is a common rail direct injection engine with either a single turbo or twin turbo chargecooled air system. It meets U.S. EPA Tier 4 Final, EU Stage V and Japan 2014 (Tier 4 Final) emission standards. For ease of installation, the IPU provides full aftertreatment mounting, an integrated cooling system and inlet air filter mounted to the IPU.
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Specifications
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Maximum Power | measurement | 188 | hp | 140 | kW | |
| Maximum Torque | measurement | 601 | lb-ft @ 1400 rpm | 815 | Nm @ 1400 rpm | |
| Rated Speed | text | 2000 - 2200 rpm |
Documents & Spec Sheets
Features & Benefits
Reliable, Quiet and Durable Power
Global manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.
Exhaust System
Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) system supplied installed on engine. Zero downtime due to regeneration.
World-class Product Support Offered Through Global Cat Dealer Network
Superior dealer service network, Customer Support Agreements (CSA) and Cat® Extended Service Coverage (ESC).
Low-Cost Maintenance
Worldwide service delivers ease of maintenance and simplifies the servicing routine. Hydraulic tappets, multi-vee belts, service free DPF and 500-hour oil change intervals enable low-cost maintenance.
Complete Specifications
Power Rating
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Maximum Power | measurement | 188 | hp | 140 | kW | |
| Maximum Torque | measurement | 601 | lb-ft @ 1400 rpm | 815 | Nm @ 1400 rpm | |
| Rated Speed | text | 2000 - 2200 rpm | ||||
| Minimum Power | measurement | 137 | hp | 102 | kW | |
| Emissions | text | EU Stage V, U.S. EPA Tier 4 Final, Japan 2014 (Tier 4 Final) | ||||
| Engine Configuration | text | Inline 4, 4-Stroke-Cycle Diesel | ||||
| Bore | measurement | 4.1 | in | 105 | mm | |
| Stroke | measurement | 5 | in | 127 | mm | |
| Displacement | measurement | 268.5 | in³ | 4.4 | l | |
| Compression Ratio | text | 16.0:2 | ||||
| Aspiration | text | Turbocharged Aftercooled (TA) or Twin Turbocharged Aftercooled (TTA) | ||||
| Rotation from Flywheel End | text | Counterclockwise | ||||
| Aftertreatment | text | DOC+DPF+SCR | ||||
| Length | measurement | 60.3 | in | 1532 | mm | |
| Width | measurement | 34.2 | in | 869 | mm | |
| Height | measurement | 53.7 | in | 1364 | mm | |
| Weight | measurement | 1559 | lb | 707 | kg |
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
- Guidance on cooling system design available through your dealer to ensure equipment reliability
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 FINAL, EU STAGE V AFTERTREATMENT, JAPAN 2014 (TIER 4 FINAL) / CLEAN EMISSIONS CONTROL EQUIPMENT
- Diesel Oxidation Catalyst (DOC) / Diesel Particulate Filter (DPF) / Selective Catalytic Reduction (SCR)
- No ash service requirement
- Passive regeneration