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 Cat® C7.1 Industrial Power Unit |
 Cat® C18 Industrial Power Unit |
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Power Rating |
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| Maximum Power | 275 HP | 630 HP | - |
| Maximum Torque | 774 lb-ft @ 1400 rpm | - | - |
| Rated Speed | 116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm | 1800-2100 | - |
| Minimum Power | 156 HP | 575 HP | - |
Emission Standards |
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| Emissions | China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA | China Stage II, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent or Non-Certified | - |
General |
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| Engine Configuration | Inline 6, 4-Stroke-Cycle Diesel | Inline 6, 4-Stroke-Cycle Diesel | - |
| Bore | 4.1 in | 5.7 in | - |
| Stroke | 5.3 in | 7.2 in | - |
| Displacement | 427.7 in³ | 1104.5 in³ | - |
| Compression Ratio | 16.8:1 | 16.3:1 | - |
| Aspiration | Turbocharged Aftercooled (TA) | Turbocharged Aftercooled (TA) | - |
| Rotation from Flywheel End | Counterclockwise | Counterclockwise | - |
| Aftertreatment | - | - | - |
Power Unit Dimensions |
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| Length | 68 in | 54.6 in | - |
| Width | 31 in | 36.3 in | - |
| Height | 44.8 in | 48.9 in | - |
| Weight | 1737 lb | 4844 lb | - |
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