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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