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    Cat® 3512C Industrial Diesel Engine
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    Cat® C4.4 Industrial Power Unit
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    Cat® C4.4 Industrial Power Unit
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    Cat® C18 Industrial Power Unit (<560 kW)
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    Power Rating
    Maximum Power 1500 HP 108.6 HP 129.4 HP 630 HP
    Maximum Torque 5259 lb-ft @ 1500 rpm - - 2177 lb-ft @ 1300 rpm
    Rated Speed 1800 rpm 2200 rpm 2200 rpm 1800-2000 rpm
    Minimum Power 1500 HP 81.8 HP 129.4 HP 575 HP

    Emission Standards
    Emissions U.S. EPA Tier 2 Equivalent UN ECE R96 Stage IIIA China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA U.S. EPA Tier 4 Final, EU Stage V, China Nonroad Stage IV

    Engine Dimensions - Approximate
    Length 120.8 in - - -
    Width 70.3 in - - -
    Height 71.1 in - - -
    Weight - Net Dry - Basic Operating Engine Without Optional Attachments 13400 lb - - -

    General
    Engine Configuration V-12, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel
    Bore 6.7 in 4.1 in 4.1 in 5.7 in
    Stroke 7.5 in 5 in 5 in 7.2 in
    Displacement 3158 in³ 268.5 in³ 268.5 in³ 1104.5 in³
    Aspiration Turbocharged Aftercooled Turbocharged (T) Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
    Rotation from Flywheel End Counterclockwise Counterclockwise Counterclockwise Counterclockwise
    Aftertreatment - - - DOC+DPF+SCR
    Compression Ratio - 18.2:1 16.2:1 16.0:1

    Power Unit Dimensions
    Length - 49.6 in 53.5 in 99.7 in
    Width - 28.9 in 29.5 in 48.9 in
    Height - 38 in 37.9 in 79 in
    Weight - 1025 lb 1146 lb 5842 lb

    Aftertreatment Dimensions
    Width - - - 43.8 in
    Height - - - 25.7 in
    Weight - - - 591 lb

    Aftertreatment Dimensions*
    Diameter - - - 13 in

    PETU Dimensions - Tier 4 Final Only
    Length - - - 33.6 in
    Width - - - 11.3 in
    Height - - - 21.7 in
    Weight - - - 42.8 lb
    Volume Capacity - - - 51.1 qt (US)
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