C7.1

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Overview

The C7.1 Industrial Diesel Engine is offered in ratings from 129-225 bkW (172-302 bhp) @ 2200 rpm and meets U.S. EPA Tier 4 Final, EU Stage V emission standards. Industries and applications powered by C7.1 engines include: Agriculture, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers and Underground Mining Equipment.

Power Rating

Units:
Minimum Power 172.0 HP 129.0 kW Less
Maximum Power 302.0 HP 225.0 kW Less
Rated Speed 2200 rpm 2200 rpm Less

Emission Standards

Emissions U.S. EPA Tier 4 Final Nonroad, EU Stage V Nonroad Emissions Standards U.S. EPA Tier 4 Final Nonroad, EU Stage V Nonroad Emissions Standards Less

General

Engine Configuration In-Line 6, 4-Stroke-Cycle Diesel In-Line 6, 4-Stroke-Cycle Diesel Less
Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Less
Compression Ratio 16.5:1 16.5:1 Less
Combustion System Direct Injection Direct Injection Less
Rotation from Flywheel End Counterclockwise Counterclockwise Less

Engine Dimensions - Approximate

Width 753-820.2 mm (29.6-32.3 in) 753-820.2 mm (29.6-32.3 in) Less
Height 907 mm (35.7 in) 907 mm (35.7 in) Less
Length 1063.7 mm (41.9 in) 1063.7 mm (41.9 in) Less
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 715 kg (1576 lb) 715 kg (1576 lb) Less

Aftertreatment Dimensions - Approximate

Weight 65-107 kg (143.3-235.9 lb) 65-107 kg (143.3-235.9 lb) Less
Diameter 287-337.8 mm (11.3-13.3 in) 287-337.8 mm (11.3-13.3 in) Less
Width 623-769 mm (24.5-30.3 in) 623-769 mm (24.5-30.3 in) Less
Height 453-455 mm (17.8-18.1 in) 453-455 mm (17.8-18.1 in) Less
Length 610-733 mm (24-28.9 in) 610-733 mm (24-28.9 in) Less

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.

High Performance

Series turbocharging with smart wastegate available on specific ratings for fast response, high power, and increased torque.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel & Oil

Tier 4 Final, or Stage V engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Package Size

Exceptional power density enables standardization across numerous applications. Multiple installation options minimize total package size. Ideal for equipment with narrow engine compartments.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Hydraulic tappets, multi-vee belts, minimum 5000-hour diesel particulate filter (DPF) ash service interval and 500-hour oil change intervals enable low-cost maintenance. Many service items have a choice of location on either side of the engine to enable choice of service access. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.

Quality

Every Cat engine is manufactured to stringent standards in order to assure customer satisfaction.

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

Tier 4 Final, Stage V Aftertreatment Features


Regeneration. The DOC/SCR modular design offers a simple, compact package while providing high levels of performance. A DOC/DPF/SCR option is available for higher power machines. While in use, both DOC/SCR an DOC/DPF/SCR systems offer transparent operation to the user.


Mounting. Extensive range of inlets and outlets, as well as remote and on-engine installations, provide flexibility for many installations.
Service. Both DOC/SCR an DOC/DPF/SCR systems are service-free for the emissions life of the engine.
Available in 12V or 24V systems

C7.1 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 at 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)
  • NOx Reduction System (NRS)
  • Selective Catalytic Reduction (SCR)
  • 3" flex pipe connection with straight, 45°, and 90° options for flexibility