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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

  • Maximum Power 320.0 HP 240.0 kW
  • Maximum Torque 935.0 lb-ft @ 1400 rpm 1268.0 Nm @ 1400 rpm
  • Rated Speed 2200 rpm 2200 rpm
  • Minimum Power 172.0 HP 129.0 kW

Emission Standards

  • Emissions U.S. EPA & CARB Tier 4 Final, EU Stage V U.S. EPA & CARB Tier 4 Final, EU Stage V

General

  • Engine Configuration In-Line 6 In-Line 6
  • Bore 4.1 in 105.0 mm
  • Stroke 5.3 in 135.0 mm
  • Displacement 427.7 in³ 7.0 l
  • Compression Ratio 16.5:1 16.5:1
  • Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
  • Combustion System Direct Injection Direct Injection
  • Rotation from Flywheel End Counterclockwise Counterclockwise
  • Aftertreatment DOC+DPF+SCR DOC+DPF+SCR

Engine Dimensions - Approximate

  • Length 41.9 in 1064.0 mm
  • Width 31.4 in 798.0 mm
  • Height 35.9 in 912.0 mm
  • Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1658.0 lb 752.0 kg

Aftertreatment Dimensions

  • Length 29.0 in 733.0 mm
  • Width 30.3 in 769.0 mm
  • Height 18.1 in 455.0 mm
  • Diameter 13.3 in 338.0 mm
  • Weight 236.0 lb 107.0 kg

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, five-year warranty, superior dealer service and a comprehensive global dealer support network—it’s all standard with the Cat C7.1.

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.

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

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