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Cat® C7.1 ACERT™ Diesel Engine

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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.

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.

Ideal Applications

Industrial, agricultural and construction applications such as: Pumps
 • Compressors
 • Chippers
 • Grinders
 • Asphalt paving equipment
 • Hydraulic power units
 • Bore rigs
 • Drill rigs
 • Tractors

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.

Cat Dealer Product Support

Scheduled maintenance, included warranty, reliable dealer service and a comprehensive global dealer support network—it’s all standard with the Cat C7.1. See your Cat dealer for details.

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.

Power Rating
Maximum Power 240 kW (320 HP)
Maximum Torque 1268 Nm @ 1400 rpm (935 lb-ft @ 1400 rpm)
Rated Speed 2200 rpm
Minimum Power 129 kW (172 HP)
Emission Standards
Emissions U.S. EPA & CARB Tier 4 Final, EU Stage V
General
Engine Configuration In-Line 6
Bore 105 mm (4.1 in)
Stroke 135 mm (5.3 in)
Displacement 7 l (427.7 inu00b3)
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 1064 mm (41.9 in)
Width 798 mm (31.4 in)
Height 912 mm (35.9 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 752 kg (1658 lb)
Aftertreatment Dimensions
Length 733 mm (29 in)
Width 769 mm (30.3 in)
Height 455 mm (18.1 in)
Aftertreatment Dimensions*
Diameter 338 mm (13.3 in)
Aftertreatment Dimensions
Weight 107 kg (236 lb)

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

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