Caterpillar C1.1

The Caterpillar C1.1 is a 1.13 L (1,130 cc) thee-cylinders water-cooled four-stroke internal combustion diesel engine manufactured by Caterpillar Inc., for industrial applications.

The Caterpillar C1.1 engine has a cast-iron cylinder block, indirect injection fuel system, electric starter motor and 12 Volts (40 amp) alternator. The Cat C1.1 engine used a belt-driven coolant pump, coolant temperature switch. This diesel motor uses closed-circuit lubrication system with spin-on lube oil filter, lube oil pressure switch, and lube oil sump.

It has a 77.0 mm (3.03 in) cylinder bore and 81.0 mm (3.19 in) piston stroke. Compression ratio rating is 23.0:1.

The CAT C1.1 engine produced:

  • EU Stage IIIA emission standards (Standard version): From 20 PS (14.7 kW; 19.7 HP) at 2,200 rpm to 28.6 PS (21 kW; 28.2 HP) at 3,400 rpm of output power and 59 N·m (6 kg·m, 43.5 ft·lb) at 3,200 rpm of torque.
  • EU Stage IIIA emission standards (Derate version): From 18.6 PS (13.7 KW; 18.4 HP) at 2,200 rpm to 24.1 PS (17.7 KW; 23.7 HP) at 3,000 rpm of maximum power
  • U.S. EPA Tier 4 Final emission standards: From 19.6 PS (14.4 KW; 19.3 HP) at 2,200 rpm to 25.0 PS (18.4 KW; 24.7 HP) at 2,800 rpm of power.
  • U.S. EPA Tier 4 Interim emission standards (Standard version): From 20.0 PS (14.7 KW; 19.7 HP) at 2,200 rpm to 28.6 PS (21.0 KW; 28.2 HP) at 3,400 rpm of power.
  • U.S. EPA Tier 4 Interim emission standards (Derate version): From 18.6 PS (13.7 KW; 18.4 HP) at 2,200 rpm to 28.6 PS (21.0 KW; 28.2 HP) at 3,400 rpm of power.

The CAT C1.1 power unit produced:

  • EU Stage IIIA emission standards: 26.8 PS (19.7 KW; 26.4 HP) at 3,000 rpm.
  • U.S. EPA Tier 4 Final emission standards: 19.6 PS (14.4 KW; 19.3 HP) at 2,200 rpm.
  • U.S. EPA Tier 4 Interim emission standards: 24.3 PS (17.9 KW; 24.0 HP) at 3,000 rpm.

General information

Engine Specifications
ModelC1.1
Type4-stroke, thee-cylinders
Displacement1.13 L, 1,130 cm2, (68.96 cu·in)
Max. horsepower EU Stage IIIA (Standard version):
From 20 PS (14.7 kW; 19.7 HP) at 2,200 rpm
to 28.6 PS (21 kW; 28.2 HP) at 3,400 rpm
EU Stage IIIA (Derate version):
From 18.6 PS (13.7 KW; 18.4 HP) at 2,200 rpm
to 24.1 PS (17.7 KW; 23.7 HP) at 3,000 rpm
U.S. EPA Tier 4 Final:
From 19.6 PS (14.4 KW; 19.3 HP) at 2,200 rpm
to 25.0 PS (18.4 KW; 24.7 HP) at 2,800 rpm
U.S. EPA Tier 4 Interim (Standard version):
From 20.0 PS (14.7 KW; 19.7 HP) at 2,200 rpm
to 28.6 PS (21.0 KW; 28.2 HP) at 3,400 rpm
U.S. EPA Tier 4 Interim (Derate version):
From 18.6 PS (13.7 KW; 18.4 HP) at 2,200 rpm
to 28.6 PS (21.0 KW; 28.2 HP) at 3,400 rpm
Max. torque (crank PTO) EU Stage IIIA (Standard version):
59 N·m (6 kg·m, 43.5 ft·lb) at 3,200 rpm
Fuel systemFuel injection pump with Electronic Shut-off Solenoid (ESOS)
Cooling systemLiquid-cooled
Aspiration typeNaturally Aspirated
Lubricating systemPressure feed
Starting systemElectric starter
Starting aidGlow plug
PTO shaft rotationCounterclockwise (from flywheel end)

Dimensions and Weight

C1.1
Length, mm (in)491 (19.3)
Width, mm (in)400 (15.7)
Height, mm (in)576 (22.7)
Dry weight, kg (lb)87.0 kg (191.8 lbs)

MAINTENANCE DATA

Engine
Rated speed2,200-3,400 rpm
Oil system
Oil type4-stroke engile oil or an equivalent
Recommended oilSAE 10W-30
Oil capacity4.4 L (4.65 US. qt, 3.87 Imp. qt.)
Cooling system
Cooling liquid capacity:1.9 L (2.0 U.S. qts)

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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

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