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    Cat® C7.1 ACERT™ Diesel Engine
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    Cat® C27 Industrial Power Unit
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    Cat® C15 Industrial Power Unit
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    Cat® C13 Industrial Power Unit
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    Power Rating
    Maximum Power 320 HP 950 HP 540 HP 536 HP
    Maximum Torque 935 lb-ft @ 1400 rpm 3211 lb-ft @ 1200 rpm - -
    Rated Speed 2200 rpm 1800 rpm 1800-2100 rpm 1800-2100
    Minimum Power 172 HP 800 HP 440 HP 385 HP

    Emission Standards
    Emissions U.S. EPA & CARB Tier 4 Final, EU Stage V U.S. EPA Tier 4 Final, EU Stage V China Stage II, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent Brazil MAR-1, UN R96 Stage IIIA, U.S. EPA Tier 3

    General
    Engine Configuration In-Line 6 V-12, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel
    Bore 4.1 in 5.7 in 5.4 in 5.1 in
    Stroke 5.3 in 6 in 6.8 in 6.2 in
    Displacement 427.7 in³ 1649.5 in³ 927.6 in³ 763 in³
    Compression Ratio 16.5:1 16.0:1 18.0:1 17.0:1
    Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Twin Turbocharged-Aftercooled (TTA) Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
    Combustion System Direct Injection - - -
    Rotation from Flywheel End Counterclockwise Counterclockwise Counterclockwise Counterclockwise
    Aftertreatment DOC+DPF+SCR DOC - -

    Engine Dimensions - Approximate
    Length 41.9 in - - -
    Width 31.4 in - - -
    Height 35.9 in - - -
    Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1658 lb - - -

    Aftertreatment Dimensions
    Length 29 in - - -
    Width 30.3 in - - -
    Height 18.1 in - - -
    Weight 236 lb - - -

    Aftertreatment Dimensions*
    Diameter 13.3 in - - -

    Power Unit Dimensions
    Length - - 96.4 in 92 in
    Width - - 51.8 in 50 in
    Height - - 103.5 in 71 in
    Weight - - 4532 lb 3730 lb
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