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Industrial Diesel Power Units - Lesser Regulated & Non-Regulated

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® C1.1 Industrial Power Unit

C1.1 Industrial Power Units, with the rating: 17.9 bkW (24 bhp) @ 3000 rpm, meet EPA Tier 4 Interim equivalent emission standards. They are available for U.S. EPA Flexibility and for Europe and, depending on applicable emission standards, may be introduced in other regulated jurisdictions. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

  • Specification Summary

  • Minimum Rating17.9 bkW
  • Maximum Rating17.9 bkW
  • Frequency3000 rpm
  • EmissionsU.S. EPA Tier 4 Interim Equivalent. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU emission standards.
  • Engine ConfigurationInline 3, 4-Stroke-Cycle Diesel

Product Details

Power Rating

Minimum Rating 17.9 bkW
Maximum Rating 17.9 bkW
Frequency 3000 rpm

Emission Standards

Emissions U.S. EPA Tier 4 Interim Equivalent. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU emission standards.


Engine Configuration Inline 3, 4-Stroke-Cycle Diesel
Bore 77 mm (3.03 in)
Stroke 81 mm (3.19 in)
Displacement 1.131 L (69 in³)
Aspiration Naturally Aspirated (NA)
Compression Ratio 23:1
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 5.21 L (5.5 qt)
Lube System (refill) 4.9 L (5.2 qt)

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

Length 778 mm (30.6 in)
Width 438 mm (17.2 in)
Height 730 mm (28.7 in)
Weight - Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C) 129 kg (284 lb)
  • Air Inlet System
    •  Inlet manifold
  • Control System
    •  Alternator 12 volt 15 amp
    •  Starter motor 12 volt
    •  Glow plug starting aid
  • Cooling System
    •  Belt-driven coolant pump
    •  Coolant temperature switch
    •  Mounted radiator and fan
  • Belt-driven coolant pump
    • Coolant temperature switch
      • Mounted radiator and fan
        • Flywheel and Flywheel Housing
          •  SAE No. 6 1/2 flywheel
          •  SAE No. 5 flywheel housing
        • SAE No. 6 1/2 flywheel
          • SAE No. 5 flywheel housing
            • Fuel System
              •  Fuel injection pump
              •  Fuel filter
              •  Electronic Shut-off Solenoid (ESOS)
            • Fuel injection pump
              • Fuel filter
                • Electronic Shut-off Solenoid (ESOS)
                  • Lube System
                    •  Spin-on lube oil filter
                    •  Lube oil pressure switch
                    •  Lube oil sump
                  • Power Take Off (PTO)
                    •  Provision for timing case rear facing PTO
                  • Provision for timing case rear facing 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

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