Cat® C1.1 Diesel Engine

The Cat® C1.1 Industrial Diesel Engine is offered in ratings ranging from 14.4-18.4 bkW (19.3-24.7 bhp) @ 1800-2800 rpm. These ratings meet U.S. EPA Tier 4 Final emission standards. Ratings: 13.7-21.0 bkW (18.4-28.2 bhp) @ 2200-3000 rpm are also available for Europe and, depending on applicable emission standards, may be introduced in other regulated areas. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU emission standards. Industries and applications powered by C1.1 engines include: Aircraft Ground Support, Auxiliary Power Units, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Construction, Forestry, General Industrial, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Pumps, Trenchers, Underground Mining Equipment.

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Maximum Power 24 HP
Maximum Torque 63 lb-ft @ 1600 rpm
Rated Speed 2800 rpm
Minimum Power 19.3 HP
Emissions U.S. EPA Tier 4 Final, EU Stage V
Engine Configuration In-Line 3
Bore 3 in
Stroke 3.2 in
Displacement 69 in³
Compression Ratio 23.0:1
Aspiration Naturally Aspirated (NA)/Turbocharged (T)
Combustion System Indirect Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -
Length 19.3 in
Width 15.8 in
Height 22.7 in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 211 lb
Air Inlet System
  • Inlet manifold with choice of inlets.
Control System
  • Alternator 12 volt 65 amp
  • Starter motor 12 volt
  • Glow plug starting aid
Cooling System
  • Belt-driven coolant pump
  • Coolant temperature switch
Flywheel and Flywheel Housing
  • SAE No. 6 1/2 flywheel
  • Choice of SAE No. 5 or standard backplate flywheel housing
  • U.S. EPA Tier 4 Final: Standard backplate flywheel housing and flatface flywheel
Fuel System
  • Fuel injection pump
  • Spin-on fuel filter
Lube System
  • Low profile oil pan
  • Spin-on lube oil filter
  • Lube oil pressure switch
Power Take Off (PTO)
  • Provision for Power Take Off (PTO)
General
  • Cast iron, engine block
  • Cast iron exhaust manifold--side outlet
  • Cold start capability to -20° C (-4° F)
  • Paint: Caterpillar yellow, with optional colors available at request