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 Cat® C7.1 Industrial Power Unit |
 Cat® C11 Industrial Power Unit |
 Cat® C27 Industrial Power Unit |
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Power Rating |
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|---|---|---|---|
| Maximum Power | 275 HP | 451 HP | 950 HP |
| Maximum Torque | 774 lb-ft @ 1400 rpm | - | 3211 lb-ft @ 1200 rpm |
| Rated Speed | 116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm | 1800-2100 rpm | 1800 rpm |
| Minimum Power | 156 HP | 325 HP | 800 HP |
Emission Standards |
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| Emissions | China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA | Brazil MAR-1, UN R96 Stage IIIA, U.S. EPA Tier 3 | U.S. EPA Tier 4 Final, EU Stage V |
General |
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| Engine Configuration | Inline 6, 4-Stroke-Cycle Diesel | Inline 6, 4-Stroke-Cycle Diesel | V-12, 4-Stroke-Cycle Diesel |
| Bore | 4.1 in | 5.1 in | 5.7 in |
| Stroke | 5.3 in | 5.5 in | 6 in |
| Displacement | 427.7 in³ | 677.4 in³ | 1649.5 in³ |
| Compression Ratio | 16.8:1 | 17.2:1 | 16.0:1 |
| Aspiration | Turbocharged Aftercooled (TA) | Turbocharged Aftercooled (TA) | Twin Turbocharged-Aftercooled (TTA) |
| Rotation from Flywheel End | Counterclockwise | Counterclockwise | Counterclockwise |
| Aftertreatment | - | - | DOC |
Power Unit Dimensions |
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| Length | 68 in | 92 in | - |
| Width | 31 in | 50 in | - |
| Height | 44.8 in | 71 in | - |
| Weight | 1737 lb | 3730 lb | - |
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