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Caterpillar

Cat® C9.3B Diesel Engine

The Cat® C9.3B industrial diesel engine is offered in ratings ranging from 250-340 kW (335-456 hp) @ 1800-2200 rpm. These ratings meet U.S. EPA Tier 4 Final, EU Stage V, China Nonroad (NR) Stage IV, Japan 2014, and Korea Stage V emission standards.

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C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated
C9.3B Tier 4 Diesel Engines – Highly Regulated

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Specifications

Spec Value
Maximum Power 456 HP 340 kW
Maximum Torque 1540 lb-ft @ 1400 rpm 2088 Nm @ 1400 rpm
Rated Speed 1800-2200 rpm 1800-2200 rpm
Minimum Power 335 HP 250 kW
Spec Value
Emissions EU Stage V, U.S. EPA Tier 4 Final, Korea Stage V, Japan 2014, China NRIV EU Stage V, U.S. EPA Tier 4 Final, Korea Stage V, Japan 2014, China NRIV
Spec Value
Engine Configuration In-Line 6 In-Line 6
Bore 4.5 in 115 mm
Stroke 5.9 in 149 mm
Displacement 567.5 in³ 9.3 l
Compression Ratio 17.0:1 17.0:1
Aspiration Turbocharged-Aftercooled (TA) Turbocharged-Aftercooled (TA)
Combustion System Direct Injection Direct Injection
Rotation from Flywheel End Counterclockwise Counterclockwise
Aftertreatment DOC+DPF+SCR DOC+DPF+SCR
Spec Value
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
Spec Value
Length 36 in 925 mm
Width 27 in 694 mm
Height 17 in 432 mm
Weight 211 lb 96 kg

Standard Equipment

Air Inlet System

  • Turbocharged
  • Air-to-Air Aftercooled
  • Mid-mount turbocharged system with front and rear exhaust configurations

Control System

  • Electronic control system
  • Over-foam wiring harness
  • Automatic altitude compensation
  • Power compensated for fuel temperature
  • Configurable software features
  • Engine monitoring system SAE J1939 broadcast and control
  • Integrated Electronic Control Unit (ECU)
  • Remote fan control

Cooling System

  • Vertical or RH thermostat outlet
  • Centrifugal water pump
  • Guidance on cooling system design available through your dealer to ensure equipment reliability

Flywheels and Flywheel Housing

  • Available SAE 1 power take-off with optional SAE B, SAE C power take-off drives. Engine power can also be taken from the front of the engine with optional attachments. (Tier 4 Final, Proposed Stage V)

Fuel System

  • Electronic high pressure common rail
  • Primary fuel filter
  • Secondary and tertiary fuel filters
  • Fuel transfer pump
  • Electronic fuel priming

Lube System

  • Open crankcase ventilation system
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Oil dipstick
  • Gear driven oil pump
  • Choice of front, rear or center sumps
  • Open crankcase ventilation system with fumes disposal (optional OCV filter system)

Power Take Off (PTO)

  • SAE B or SAE C power take off (PTO) drives. Engine power can also be taken from the front of the engine on some applications.

General

  • Paint: Caterpillar yellow, with optional colors available at request
  • Vibration damper
  • Lifting eyes

Aftertreatment System

  • Clean Emissions Module (CEM) consisting of Diesel Particulate Filter (DPF), Diesel Oxidation Catalyst (DOC) and high-efficiency Selective Catalytic Reduction (SCR)
  • Pump Electronic Control Unit (PETU)
  • Available in 12V or 24V systems

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