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Cat® C1.1 Diesel Engine

The C1.1 Industrial Diesel Engine is offered in ratings ranging from 13.7-21.0 bkW (18.4-28.2 bhp) @ 2200-3000 rpm. These ratings meet EPA Tier 4 Final emission standards. They are also available for Europe and, depending on applicable emission standards, may be introduced in other regulated and non-regulated areas. 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 and Underground Mining Equipment.

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    Product Specs

    Power Rating

    Maximum Power 28.2 HP
    Maximum Torque 49.4 lb-ft @ 2400 rpm
    Rated Speed 2200-3400 rpm
    Minimum Power 19.7 HP

    Emission Standards

    Emissions U.S. EPA Tier 4 Interim Equivalent


    Engine Configuration Inline 3, 4-Stroke-Cycle Diesel
    Bore 3 in
    Stroke 3.2 in
    Displacement 69 in³
    Compression Ratio 23.0:1
    Aspiration Naturally Aspirated (NA)
    Combustion System Indirect Injection
    Rotation from Flywheel End Counterclockwise
    Aftertreatment -

    Engine Dimensions - Approximate

    Length 19.3 in
    Width 15.7 in
    Height 22.7 in
    Weight - Net Dry - Basic Operating Engine Without Optional Attachments 191 lb