The WÄRTSILÄ® 34DF tri-fuel engine is the ultimate ‘fuel flexibility’ engine. The Wärtsilä 34DF is a four-stroke dual-fuel engine that can be run on natural gas, light fuel oil (LFO) or heavy fuel oil (HFO).
Moreover, the engine can switch over from gas to LFO/HFO and vice versa smoothly during engine operation. The Wärtsilä 34DF is manufactured in configurations from 6L up to 20V giving 435/450 kW per cylinder and a total maximum mechanical output of 9000 kW. The engine speed is 720 or 750 rpm for use with 50 or 60 Hz applications.
| Technical data 50 Hz/750 rpm | 6L34DF | 9L34DF | 16V34DF | 20V34DF | |
|---|---|---|---|---|---|
| Power, electrical | kW | 2579 | 3888 | 6970 | 8730 |
| Heat rate | kJ/kWh |
8347 (8257) |
8303 (8214) | 8048 (8146) | 8031 (8127) |
| Electrical efficiency | % | 43,1 (43,6) | 44,4 (43,8) | 44,7 (44,1) | 44,8 (44,3) |
| Technical data 60 Hz/720 rpm | |||||
| Power, electrical | kW | 2493 | 3758 | 6737 | 8439 |
| Heat rate | kJ/kWh | 8347 (8217) | 8303 (8175) | 8048 (8107) | 8031 (8127) |
| Electrical efficiency | % | 43,1 (43,8) | 44,4 (43,8) | 44,7 (44,4) | 44,8 (44,3) |
| Dimensions and dry weight of generating sets | |||||
| Length | mm | 8400 | 10400 | 11300 | 12890 |
| Width | mm | 2780 | 2780 | 3300 | 3300 |
| Height | mm | 3840 | 3842 | 4240 | 4440 |
| Weight | tonne | 58 | 77 | 120 | 130 |
| Heat rate and electrical efficiency at generator terminals, including engine driven pumps, ISO 3046 conditions and gas LHV > 28 MJ/m3N. Tolerance 5%. Power factor 0.8. Gas Methane Number > 80. Nm3 defined at NTP (273.15 K and 101.3 kPa). In liquid fuel mode. |
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