The CAT C4.4 diesel engine is rated at 82–150 bkW (109–200 bhp) at 2200 rpm, meeting U.S. EPA Tier 4 Final and EU Stage V emission standards.
Industries and applications powered by the C4.4 engine include: agriculture, aerial lifts, aircraft ground support, boring/drilling rigs, crushers/grinders, compactors/rollers, compressors, construction, cranes, shredders, 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 agricultural equipment, sprayers, trenchers, lawn and garden operations, and underground mining equipment.
Air Intake
Control System
- Fully electronic control system. All connectors and wiring harnesses are waterproof and engineered to withstand harsh off-highway environments.
- Flexible, configurable software features and widely supported SAE J1939 CAN bus enable high machine integration.
Cooling System
- Standard top tank temperature of 108°C (226°F), minimizing cooling package size.
- 50:50 water / ethylene glycol mixture.
Flywheel and Flywheel Housing
- Standard SAE 3 configuration.
Fuel System
- Electronic high-pressure common rail.
- Innovative filter design ensures optimal engine protection.
Lubrication System
- Multiple oil sump options for various applications.
Power Take-Off (PTO)
- SAE A and SAE B flanges on the left side. Additional SAE A flanges on the left side.
- In certain applications, engine power can also be taken from the front of the engine.
- Factory-installed compressor is also available.
General
- With or without balancer.
- Paint: Caterpillar Yellow; optional colors available upon 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″ hose connections with straight, 45°, and 90° options for increased flexibility.
Air Intake
Control System
- Fully electronic control system. All connectors and wiring harnesses are waterproof and engineered to withstand harsh off-highway environments.
- Flexible, configurable software features and widely supported SAE J1939 CAN bus enable high machine integration.
Cooling System
- Standard top tank temperature of 108°C (226°F), minimizing cooling package size.
- 50:50 water / ethylene glycol mixture.
Flywheel and Flywheel Housing
- Standard SAE 3 configuration.
Fuel System
- Electronic high-pressure common rail.
- Innovative filter design ensures optimal engine protection.
Lubrication System
- Multiple oil sump options for various applications.
Power Take-Off (PTO)
- SAE A and SAE B flanges on the left side. Additional SAE A flanges on the left side.
- In certain applications, engine power can also be taken from the front of the engine.
- Factory-installed compressor is also available.
General
- With or without balancer.
- Paint: Caterpillar Yellow; optional colors available upon 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" hose connections with straight, 45°, and 90° options for increased flexibility.
Installation
The CAT C4.4 diesel engine features a compact, modular core engine that enables easy installation across a wide range of machine applications.
By downsizing from the 5-liter platform, the engine delivers a 20% reduction in length, 5% reduction in height, and 40% reduction in weight,resulting in significant installation cost savings for OEMs.
Cost Savings
Compared to similar 6-cylinder platforms, the C4.4 reduces fluid consumption by more than 18% while achieving perfect balance, delivering outstanding efficiency in daily operation.
Reliable Operation
Compared with previous-generation engines, the CAT C4.4 diesel engine delivers a 15% higher power density and 10% higher torque.
Its compact design reduces heat loss and improves engine output efficiency, allowing operators to handle any tough task with ease.Built-in clean emissions modules ensure outstanding performance while delivering cleaner air around the job site.
