Wartsila ?31DF Series, Product Manual, Page: 47 / 216

ME AUX AUX DE DE
Wärtsilä 12V31DF
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
750 750 720 750 720 rpm Engine speed
550 550 530 550 530 kW Cylinder output
Variable Constant Constant Constant Constant Speed mode
6600 6600 6360 6600 6360 kW Engine output
2.71 2.71 2.72 2.71 2.72 MPa Mean effective pressure
Tier 3 Tier 3 Tier 3 Tier 3 Tier 3 IMO compliance
Combustion air system (Note 1)
11.9 9.9 11.9 9.9 11.4 9.6 11.9 9.9 11.4 9.6 kg/s Flow at 100% load
45 45 45 45 45 °C Temperature at turbocharger in-
take, max.
60 60 60 60 60 60 60 60 60 60 °C Temperature after air cooler (TE
601)
Exhaust gas system (Note 2)
12.8 11.0 12.8 11.0 11.9 10.7 12.8 11.0 11.9 10.7 kg/s Flow at 100% load
10.8 9.1 11.0 9.1 10.2 8.9 11.0 9.1 10.2 8.9 kg/s Flow at 85% load
9.7 8.3 10.1 8.0 9.4 7.8 10.1 8.0 9.4 7.8 kg/s Flow at 75% load
7.4 5.8 7.3 5.6 6.8 5.5 7.3 5.6 6.8 5.5 kg/s Flow at 50% load
285 300 285 300 285 300 285 300 285 300 °C Temperature after turbocharger
at 100% load (TE 517)
285 320 285 350 285 350 285 350 285 350 °C Temperature after turbocharger
at 85% load (TE 517)
285 310 285 350 285 350 285 350 285 350 °C Temperature after turbocharger
at 75% load (TE 517)
285 330 285 370 285 370 285 370 285 370 °C Temperature after turbocharger
at 50% load (TE 517)
7 7 7 7 7 kPa Backpressure, max.
857 805 857 805 824 792 857 805 824 792 mm Calculated exhaust diameter for
35 m/s
Heat balance at 100% load (Note 3)
636 540 636 540 612 516 636 540 612 516 kW Jacket water, HT-circuit
1116 756 1104 756 972 708 1104 756 972 708 kW Charge air, HT-circuit
1920 1596 1932 1608 1788 1536 1932 1608 1788 1536 kW Charge air, LT-circuit
732 612 732 612 708 588 732 612 708 588 kW Lubricating oil, LT-circuit
180 180 180 180 180 180 180 180 180 180 kW Radiation
Fuel consumption (Note 4)
(Note 5)
- 7280 - 7280 - 7250 - 7280 - 7250 kJ/kWh Total energy consumption at
100% load
- 7230 - 7350 - 7300 - 7350 - 7300 kJ/kWh Total energy consumption at 85%
load
- 7250 - 7500 - 7430 - 7500 - 7430 kJ/kWh Total energy consumption at 75%
load
- 7330 - 7820 - 7790 - 7820 - 7790 kJ/kWh Total energy consumption at 50%
load
- 7128 - 7128 - 7097 - 7128 - 7097 kJ/kWh Fuel gas consumption at 100%
load
- 7059 - 7171 - 7121 - 7171 - 7121 kJ/kWh Fuel gas consumption at 85%
load
DBAE248994 3-23
3. Technical Data Wärtsilä 31DF Product Guide