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C3.4B, Greater than 56 kW (75 hp)

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Overview

Cat® C3.4B Industrial Diesel Engines offer the perfect balance of durability, fuel efficiency and low emissions. The C3.4B Industrial Engine is offered in ratings ranging from 63-90 bkW (84.5-120.7 bhp) @ 2200-2500 rpm, which meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. Industries and applications powered by C3.4B engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Forestry, General Industrial, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Mobile Sweepers, Paving Equipment, Pumps, Specialty Ag Equipment, Trenchers, Turf and Landscaping and Underground Mining Equipment.

Power Rating

Units:
Minimum Power 84.5 bhp 63.0 bkW Less
Maximum Power 121.0 bhp 90.0 bkW Less
Rated Speed 2200 & 2500 rpm 2200 & 2500 rpm Less

Emission Standards

Emissions U.S. EPA Tier 4 Final, EU Stage IV Nonroad Emission Standards. U.S. EPA Tier 4 Interim Equivalent and EU Stage IIIB Equivalent ratings available using EPA or EU Flex Provisions. U.S. EPA Tier 4 Final, EU Stage IV Nonroad Emission Standards. U.S. EPA Tier 4 Interim Equivalent and EU Stage IIIB Equivalent ratings available using EPA or EU Flex Provisions. Less

General

Engine Configuration In-Line 4, 4-Stroke-Cycle Diesel In-Line 4, 4-Stroke-Cycle Diesel Less
Bore 99 mm (3.9 in) 99 mm (3.9 in) Less
Stroke 110 mm (4.3 in) 110 mm (4.3 in) Less
Displacement 3.4 L (207.5 in³) 3.4 L (207.5 in³) Less
Aspiration Turbocharged-Aftercooled (TA) Turbocharged-Aftercooled (TA) Less
Compression Ratio 17:1 17:1 Less
Combustion System Direct Injection Direct Injection Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less
Cooling System Capacity 6 L (6.3 qt) 6 L (6.3 qt) Less

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

DOC Length 320 mm (12.6 in) 320 mm (12.6 in) Less
DOC Weight 15 kg (33 lb) 15 kg (33 lb) Less
DOC Diameter 196 mm (7.7 in) 196 mm (7.7 in) Less
SCR Weight 20 kg (44 lb) 20 kg (44 lb) Less
SCR Diameter 251 mm (9.88 in) 251 mm (9.88 in) Less
SCR Length 520 mm (20.47 in) 520 mm (20.47 in) Less

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

Length 610 mm (24 in) 610 mm (24 in) Less
Width 623 mm (24.5 in) 623 mm (24.5 in) Less
Height 805.5 mm (31.7 in) 805.5 mm (31.7 in) Less
Dry Weight (Basic Operating Engine Without Optional Attachments) 270 kg (595.2 lbs) 270 kg (595.2 lbs) Less

Emissions

Meets U.S. EPA Tier 4 Final, EU Stage IV emission standards.

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

Leading-edge technology provides significant improvements in power, torque, fuel consumption and response. Technology includes single smart wastegated turbo systems, durable high pressure common rail technology, and closed circuit breathing system.

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.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Capable of optimal oil change intervals of 500 hours. Service-free through-flow diesel particulate filter (DPF) for Tier 4 Final, Stage IIIB. The S·O·S℠ program is available from your Cat dealer to determine oil change intervals and provide optimal performance.

Quality

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

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including S•O•S℠ 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 IV Aftertreatment Features


Technology and Power. The DOC/SCR technology provides customers with a compact aftertreatment solution. The DOC/SCR is invisible to the operator while equipment is being used.


Mounting. Multiple on engine mounting positions for DOC/Mixer. Flexibility of remote mounting of SCR can in various orientations.
Service. Aftertreatment is designed to be service free for the emissions life of the engine.

C3.4B, Greater than 56 kW (75 hp) Standard Equipment

Air Inlet System
  • Induction manifolds
  • Exhaust manifolds

Control System
  • Starter motor
  • Alternator
  • Electronic Control Unit
  • Sensors for: engine speed, oil pressure, and coolant temperature

Cooling System
  • Cooling packs

Flywheels and Flywheel Housing
  • Flywheel housings
  • Flywheel and starter rings

Fuel System
  • Fuel filter positions
  • Common rail fuel pump and injectors

Lube System
  • Lubricating oil filters

General
  • Cold start capability to -20° C (-4° F)
  • Paint: Caterpillar yellow, with optional colors available at request

U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment/ Clean Emissions Control Equipment
  • Diesel Oxidation Catalyst (DOC)
  • Selective Catalytic Reduction (SCR)
  • SCR Auxiliaries

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