The Cat™ C7.1 industrial diesel engine is offered in ratings from 130-205 kW (174-275 hp) and meets China Nonroad Stage IV emission standards. The C7.1 is designed to meet the needs of many industries and applications, including bore/drill rigs, chippers/grinders, material handling, mining, earthmoving equipment, paving equipment, pumps, fruit harvesters equipment, turf and underground mining equipment.
Features
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Installation
Boasting one of Caterpillar’s most modular engine designs to date, the Cat C7.1 also features an engine-mounted aftertreatment that saves OEMs valuable time and space when installing into a wide variety of machines—especially industrial and construction applications. OEMs also enjoy a 20% length, 5% height and 40% weight reduction when downsizing from 9-liter platforms.
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Advanced Features
The Cat C7.1 uses passive regeneration technology, so operators can continue to perform their toughest tasks, in the most severe environments, without having to wait on the engine.
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Ideal Applications
Industrial, agricultural and construction applications such as: Pumps • Compressors • Chippers • Grinders • Asphalt paving equipment • Hydraulic power units • Bore rigs • Drill rigs • Tractors
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Total Cost of Ownership
The benefits to downsizing are many, including an 18% decrease in overall fuel consumption when downsizing from a 6-cylinder engine. With an added 3-4% decrease in overall DEF consumption and EGR integration, the cost savings don’t take long to add up.
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Cat Dealer Product Support
Scheduled maintenance, five-year warranty, superior dealer service and a comprehensive global dealer support network—it’s all standard with the Cat C7.1.
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Safety
Validated with thousands of hours of field testing, the Cat C7.1 is built to meet Caterpillar’s strict safety standards and customers’ most demanding work sites throughout the world.
Specifications
Units for specifications
Power Rating
| Maximum Power | 275 hp 205 kW |
|---|---|
| Maximum Torque | 927 lb-ft @ 1400 rpm 1257 Nm @ 1400 rpm |
| Rated Speed | 2200 rpm |
| Minimum Power | 174 hp 130 kW |
Emission Standards
| Emissions | China Nonroad Stage IV |
|---|
General
| Engine Configuration | In-Line 6 |
|---|---|
| Bore | 4.13 in 105 mm |
| Stroke | 5.3 in 135 mm |
| Displacement | 427.7 in³ 7 l |
| Compression Ratio | 16.5:1 |
| Aspiration | Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) |
| Combustion System | Direct Injection |
| Rotation from Flywheel End | Counterclockwise |
| Aftertreatment | DOC+DPF+SCR |
Engine Dimensions - Approximate
| Length | 34.3 in 870 mm |
|---|---|
| Width | 31.4 in 798 mm |
| Height | 35.9 in 911 mm |
| Weight - Net Dry - Basic Operating Engine Without Optional Attachments | 1863 lb 845 kg |
Aftertreatment Dimensions
| Length | 29 in 733 mm |
|---|---|
| Width | 30.3 in 769 mm |
| Height | 18.1 in 455 mm |
| Weight | 236 lb 107 kg |
Aftertreatment Dimensions*
| Diameter | 13.3 in 338 mm |
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Standard Equipment
Air Inlet
- 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. 1, 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
General
- Paint: Caterpillar yellow, with optional colors available on request
Aftertreatment/ Clean Emissions Control Equipment
- Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
- NOx Reduction System (NRS)
- Selective Catalytic Reduction (SCR)
- 3" flex pipe connection with straight, 45°, and 90° options for flexibility