Industrial Diesel Engines - Lesser Regulated & Non-Regulated
Industrial Diesel Engines - Highly Regulated

Cat® C7.1 Diesel Engine

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Overview

The Cat® C7.1 Industrial Diesel Engine is offered in ratings ranging from 112-162 bkW (150-220 bhp) @ 1950-2200 rpm. These ratings meet China Stage II, U.S. EPA Tier 2 equivalent, and EU Stage II equivalent emission standards. Industries and applications powered by C7.1 engines include: Agriculture, Ag Tractors, 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

Minimum Power
150.00 bhp
112.00 bkW
Maximum Power
220.00 bhp
162.00 bkW
Rated Speed
1950-2200 rpm

Emission Standards

Emissions
China Nonroad III, U.S. EPA Tier 3 Equivalent, EU Stage III Equivalent

General

Engine Configuration
Inline 6, 4-Stroke-Cycle
Bore
105 mm (4.13 in)
Stroke
135 mm (5.3 in)
Displacement
7.01 L (427.7 in³)
Aspiration
Turbocharged Aftercooled (TA)
Rotation (from flywheel end)
Counterclockwise

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Length
929 mm (35.5 in)
Width
668 mm (26.2 in)
Height
797 mm (31.4 in)
Weight, Net Dry (Basic Operating Engine Without Optional Attachments)
506 kg (1115 lb)

Power Rating

Minimum Power
150.00 HP
112.00 kW
Maximum Power
217.00 HP
162.00 kW
Rated Speed
1950-2200 rpm

Emission Standards

Emissions
China Nonroad Stage III, UN ECE R96 Stage IIIA

General

Engine Configuration
Inline 6, 4-Stroke-Cycle
Bore
105 mm (4.13 in)
Stroke
135 mm (5.3 in)
Aspiration
Turbocharged Aftercooled (TA)
Displacement
7.01 L (427.7 in³)
Rotation from Flywheel End
Counterclockwise

Engine Dimensions - Approximate

Height
797 mm (31.4 in)
Length
929 mm (35.5 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
506 kg (1115 lb)
Width
668 mm (26.2 in)

General

Bore
4.10 in
105.00 mm
Stroke
5.30 in
135.00 mm
Displacement
427.70 in³
7.01 l

Engine Dimensions - Approximate

Length
44.90 in
1140.00 mm
Height
32.30 in
820.00 mm
Width
28.40 in
720.00 mm

Power Rating

Maximum Torque
663.00 lb-ft @ 1400 rpm
900.00 Nm @ 1400 rpm

Engine Dimensions - Approximate

Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1118.00 lb
507.00 kg

General

Compression Ratio
18.2:1
Combustion System
Direct Injection
Aftertreatment
-
Features

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 Interim or Tier 4 Final, Stage IIIB or Stage IV 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.

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
Standard Equipment
  • Air Inlet
    • Standard air cleaners
  • Cooling System
    • Top tank temperature 108°C (226°F) as standard to minimize cooling pack size, 50:50 water glycol mix, detailed guidance on cooling system design and validation available to ensure machine reliability
  • Exhaust System
    • Diesel particulate filter and regeneration system supplied, with a range of inlet and outlet options
  • Flywheels and Flywheel Housing
    • Wide choice of drivetrain interfaces, including SAE1, SAE2 or SAE3 configurations
  • Lube System
    • Wide choice of sumps for different applications
  • Power Take Off
    • SAE A or SAE B flanges on left-hand side. Right- hand side twin PTO also available. Engine power can also be taken from the front of the engine on some applications, factory fitted compressors are also available.
  • General
    • Paint: Caterpillar yellow, with optional colors available at request