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
Model C1.1
Type 4-stroke, thee-cylinders
Displacement 1.13 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 system Fuel injection pump with Electronic Shut-off Solenoid (ESOS)
Cooling system Liquid-cooled
Aspiration type Naturally Aspirated
Lubricating system Pressure feed
Starting system Electric starter
Starting aid Glow plug
PTO shaft rotation Counterclockwise (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 speed 2,200-3,400 rpm
Oil system
Oil type 4-stroke engile oil or an equivalent
Recommended oil SAE 10W-30
Oil capacity 4.4 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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Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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