C3.4B, GREATER THAN 56 KW (75 HP)

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.


SPECIFICATIONS
Power Rating
Minimum Power 84.5 BHP
Maximum Power 121 BHP
Rated Speed 2200 & 2500 rpm


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.


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


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


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


BENEFITS & 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


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.

EQUIPMENT
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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