C7.1 China NR4

Cat?� C7.1 Diesel Engine

C7.1 Tier 4 (same as China NR4)

DESCRIPTION

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.

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.

  • Standard Equipment
  • Specs
  • Docs

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

Specs

Overview

Long Name:
Cat?� C7.1 Diesel Engine
Name:
C7.1 China NR4
Brand:
Caterpillar
Status:
Current

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

Aftertreatment Dimensions*

Diameter
13.3 in / 338 mm

Aftertreatment Dimensions

Weight
236 lb / 107 kg

SEE HOW C7.1 China NR4 COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.

Industrial Diesel Engines
C7.1 China NR4
C7.1 Tier 4 (same as China NR4)
Brand
Caterpillar
Status
Current
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
Emissions
China Nonroad Stage IV
Engine Configuration
In-Line 6
Bore
4.13 in / 105 mm
Stroke
5.3 in / 135 mm
Displacement
427.7 in³ / 7 l
Aspiration
Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Rotation from Flywheel End
Counterclockwise
Aftertreatment
DOC+DPF+SCR
Length
29 in / 733 mm
Width
30.3 in / 769 mm
Height
18.1 in / 455 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1863 lb / 845 kg
Industrial Diesel Engines
C7.1
C7.1 LRC Diesel Engines - Lesser Regulated & Non-Regulated
Brand
Caterpillar
Status
Current
Maximum Power
275 HP / 205 kW
Maximum Torque
774 lb-ft @ 1400 rpm / 1050 Nm @ 1400 rpm
Rated Speed
2200-2500 rpm
Minimum Power
155.6 HP / 116 kW
Emissions
China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel
Bore
4.1 in / 105 mm
Stroke
5.3 in / 135 mm
Displacement
427.7 in³ / 7.01 l
Aspiration
Turbocharged Aftercooled (TA)
Rotation from Flywheel End
Counterclockwise
Aftertreatment
-
Length
36.6 in / 929 mm
Width
26.3 in / 668 mm
Height
32.2 in / 817 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1115 lb / 506 kg
Industrial Diesel Engines
C9.3B
C9.3B LRC Diesel Engines - Lesser Regulated & Non-Regulated
Brand
Caterpillar
Status
Current
Maximum Power
416 HP / 310 kW
Maximum Torque
1335 lb-ft @ 1400 rpm / 1810 Nm @ 1400 rpm
Rated Speed
1800-2200 rpm
Minimum Power
308 HP / 230 kW
Emissions
China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
Engine Configuration
Inline 6, 4-Stroke-Cycle Diesel
Bore
4.5 in / 115 mm
Stroke
5.9 in / 149 mm
Displacement
567.5 in³ / 9.3 l
Aspiration
Turbocharged Aftercooled (TA)
Rotation from Flywheel End
Counterclockwise
Aftertreatment
-
Length
44 in / 1125 mm
Width
31 in / 791 mm
Height
42 in / 1068 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1907 lb / 865 kg