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| S20U |
| MARINE and STATIONARY Genset |
| Main data |
| Cylinder bore : 200mm |
| Piston stroke : 300mm |
| Speed : 900-1000rpm |
| Mean effective pressure : 22.3-22.6 bar |
| Piston speed : 9.0-10.0 m/s |
| Fuel specification : Fuel oil : 700cSt/50°C 7000sRI/100°F ISO 8217, category ISO-F-RMK55 |
| Rated power and Fuel consumption |
| Cyl. | 900 rpm | 1000 rpm |
| | 100% load | 85load | | 100%load | 85% load |
| kW | g/kWh | g/kWh | kW | g/kWh | kW |
| 4L | 640 | 200 | 193 | 700 | 203 | 196 |
| 6L | 960 | 195 | 187 | 1 050 | 198 | 190 |
| 8L | 1 280 | 195 | 187 | 1 400 | 198 | 190 |
| 9L | 1 440 | 195 | 187 | 1 575 | 198 | 190 |
| Principal genset dimensions(mm)and weights(tonnes) |
| Number of cylinders | 4 | 6 | 8 | 8 | 9 |
| Speed(rpm) | 900/1000 | 900/1000 | 900 | 1000 | 900/1000 |
| Turbocharger(Holset KBB type) | R2-2 | R3-2 | R4-2 |
| Dimemensions with a toleranceof approx.± 10 mm | A*2) | 4 900 | 5 650 | 6 400 | 6 750 |
| B | 3 760 | 4 370 | 4 990 | 5 300 |
| C1 | 2800 | 3420 | - | - | - |
| C2 | - | - | 1860 |
| C3 | - | - | 2 060 | 2 430 |
| D | 737 | 760 | 792 |
| E | 2 975 | 2 945 | 3 095 |
| F | 830 | 794 | 883 |
| Bare engine without oil,water and flywheel | | 7.6 | 9.4 | 11.9 | 12.9 |
| Generator*2) | | 3.3 | 4.8 | 6.2 | 6.6 |
| Complete GenSet without oil and water | | 13.8 | 17.5 | 21.9 | 23.9 |
| Complete GenSet with oil and water | | 14.2 | 18.1 | 22.7 | 24.8 |
| *1) Stepless positioning within 90° possible. |
| *2) Diffrent generator makes, types and executions result in different dimensions and masses. |
| *3) Minimum withdrawal height for cylinder liner and piston. |
WARTSILA S20U MARINE and STATIONARY Genset
