W 6L50DF
Описание двигателя
Wärtsilä 6L50DF - шестицилиндровый, рядный, четырехтактный, нереверсивный, с турбонаддувом, промежуточным охлаждением, двойной подачей топлива в двигатель, с прямым впрыском жидкого топлива и непрямым впрыском газообразного топлива. Двигатель может работать в газовом режиме или в режиме дизель.
Технические характеристики
|
Wärtsilä 6L50DF IMO Tier 2 |
DE |
DE |
ME | ||||
|
Gas mode |
Diesel mode |
Gas mode |
Diesel mode |
Gas mode |
Diesel mode | ||
|
Cylinder output |
kW |
950 |
975 |
975 | |||
|
Engine speed |
rpm |
500 |
514 |
514 | |||
|
Engine output |
kW |
5700 |
5850 |
5850 | |||
|
Mean effective pressure |
MPa |
2.0 |
2.0 |
2.0 | |||
|
Combustion air system (Note 1) | |||||||
|
Flow at 100% load |
kg/s |
9.2 |
11.3 |
9.2 |
11.3 |
9.2 |
11.0 |
|
Temperature at turbocharger intake, max. |
°C |
45 |
45 |
45 | |||
|
Temperature after air cooler, nom. (TE 601) |
°C |
45 |
50 |
45 |
50 |
45 |
50 |
|
Exhaust gas system | |||||||
|
Flow at 100% load |
kg/s |
9.4 |
11.6 |
9.4 |
11.6 |
9.4 |
11.3 |
|
Flow at 75% load |
kg/s |
7.1 |
9.0 |
7.1 |
9.0 |
7.2 |
8.4 |
|
Flow at 50% load |
kg/s |
5.4 |
6.3 |
5.4 |
6.3 |
5.3 |
6.1 |
|
Temperature after turbocharger at 100% load (TE 517) |
°C |
373 |
343 |
373 |
343 |
369 |
350 |
|
Temperature after turbocharger at 75% load (TE 517) |
°C |
424 |
351 |
424 |
351 |
388 |
380 |
|
Temperature after turbocharger at 50% load (TE 517) |
°C |
426 |
385 |
426 |
385 |
390 |
370 |
|
Backpressure, max. |
kPa |
4 |
4 |
4 | |||
|
Calculated exhaust diameter for 35 m/s |
mm |
789 |
856 |
789 |
856 |
786 |
849 |
|
Heat balance at 100% load (Note 2) | |||||||
|
Jacket water, HT-circuit |
kW |
660 |
1040 |
660 |
1040 |
640 |
1080 |
|
Charge air, HT-circuit |
kW |
840 |
1260 |
840 |
1260 |
860 |
1240 |
|
Charge air, LT-circuit |
kW |
500 |
630 |
500 |
630 |
500 |
610 |
|
Lubricating oil, LT-circuit |
kW |
470 |
780 |
470 |
780 |
470 |
820 |
|
Radiation |
kW |
160 |
180 |
160 |
180 |
210 |
230 |
|
Fuel consumption (Note 3) | |||||||
|
Total energy consumption at 100% load |
kJ/kWh |
7300 |
- |
7300 |
- |
7300 |
- |
|
Total energy consumption at 75% load |
kJ/kWh |
7620 |
- |
7620 |
- |
7490 |
- |
|
Total energy consumption at 50% load |
kJ/kWh |
8260 |
- |
8260 |
- |
7830 |
- |
|
Fuel gas consumption at 100% load |
kJ/kWh |
7258 |
- |
7258 |
- |
7258 |
- |
|
Fuel gas consumption at 75% load |
kJ/kWh |
7562 |
- |
7562 |
- |
7429 |
- |
|
Fuel gas consumption at 50% load |
kJ/kWh |
8153 |
- |
8153 |
- |
7734 |
- |
|
Fuel oil consumption at 100% load |
g/kWh |
1.0 |
189 |
1.0 |
189 |
1.0 |
190 |
|
Fuel oil consumption at 75% load |
g/kWh |
1.5 |
192 |
1.5 |
192 |
1.5 |
196 |
|
Fuel oil consumption 50% load |
g/kWh |
2.4 |
204 |
2.4 |
204 |
2.3 |
200 |
|
Fuel gas system (Note 4) | |||||||
|
Gas pressure at engine inlet, min (PT901) |
kPa (a) |
472 |
- |
472 |
- |
472 |
- |
|
Gas pressure to Gas Valve unit, min |
kPa (a) |
592 |
- |
592 |
- |
592 |
- |
|
Gas temperature before Gas Valve Unit |
°C |
0...60 |
- |
0...60 |
- |
0...60 |
- |
|
Fuel oil system | |||||||
|
Pressure before injection pumps (PT 101) |
kPa |
800±50 |
800±50 |
800±50 | |||
|
Fuel oil flow to engine, approx |
m3/h |
6.1 |
6.2 |
6.3 | |||
|
HFO viscosity before the engine |
cSt |
- |
16...24 |
- |
16...24 |
- |
16...24 |
|
Max. HFO temperature before engine (TE 101) |
°C |
- |
140 |
- |
140 |
- |
140 |
|
MDF viscosity, min. |
cSt |
2.0 |
2.0 |
2.0 | |||
|
Max. MDF temperature before engine (TE 101) |
°C |
45 |
45 |
45 | |||
|
Leak fuel quantity (HFO), clean fuel at 100% load |
kg/h |
- |
4.5 |
- |
4.5 |
- |
4.7 |
|
Leak fuel quantity (MDF), clean fuel at 100% load |
kg/h |
12.0 |
22.6 |
12.0 |
22.6 |
11.7 |
23.3 |
|
Pilot fuel (MDF) viscosity before the engine |
cSt |
2...11 |
2...11 |
2...11 | |||
|
Pilot fuel pressure at engine inlet (PT 112) |
kPa |
400...800 |
400...800 |
400...800 | |||
|
Pilot fuel pressure drop after engine, max |
kPa |
150 |
150 |
150 | |||
|
Pilot fuel return flow at 100% load |
kg/h |
276 |
276 |
276 | |||
|
Lubricating oil system (Note 5) | |||||||
|
Pressure before bearings, nom. (PT 201) |
kPa |
400 |
400 |
400 | |||
|
Pressure after pump, max. |
kPa |
800 |
800 |
800 | |||
|
Suction ability, including pipe loss, max. |
kPa |
40 |
40 |
40 | |||
|
Priming pressure, nom. (PT 201) |
kPa |
80 |
80 |
80 | |||
|
Temperature before bearings, nom. (TE 201) |
°C |
63 |
63 |
63 | |||
|
Temperature after engine, approx. |
°C |
78 |
78 |
78 | |||
|
Pump capacity (main), engine driven |
m3/h |
149 |
153 |
157 | |||
|
Pump capacity (main), electrically driven |
m3/h |
140 |
140 |
140 | |||
|
Oil flow through engine |
m3/h |
120 |
120 |
120 | |||
|
Priming pump capacity (50/60Hz) |
m3/h |
34.0 / 34.0 |
34.0 / 34.0 |
34.0 / 34.0 | |||
|
Oil volume in separate system oil tank |
m3 |
8 |
8 |
8 | |||
|
Oil consumption at 100% load, approx. |
g/kWh |
0.5 |
0.5 |
0.5 | |||
|
Crankcase ventilation flow rate at full load |
l/min |
1300 |
1300 |
1300 | |||
|
Crankcase volume |
m3 |
14.6 |
14.6 |
14.6 | |||
|
Crankcase ventilation backpressure, max. |
Pa |
500 |
500 |
500 | |||
|
Oil volume in turning device |
l |
8.5...9.5 |
8.5...9.5 |
8.5...9.5 | |||
|
Oil volume in speed governor |
l |
1.4 |
1.4 |
1.4 | |||
|
HT cooling water system | |||||||
|
Pressure at engine, after pump, nom. (PT 401) |
kPa |
250 + static |
250 + static |
250 + static | |||
|
Pressure at engine, after pump, max. (PT 401) |
kPa |
480 |
480 |
480 | |||
|
Temperature before cylinders, approx. (TE 401) |
°C |
74 |
74 |
74 | |||
|
Temperature after charge air cooler, nom. |
°C |
91 |
91 |
91 | |||
|
Capacity of engine driven pump, nom. |
m3/h |
135 |
135 |
135 | |||
|
Pressure drop over engine, total |
kPa |
50 |
50 |
50 | |||
|
Pressure drop in external system, max. |
kPa |
150 |
150 |
150 | |||
|
Pressure from expansion tank |
kPa |
70...150 |
70...150 |
70...150 | |||
|
Water volume in engine |
m3 |
0.95 |
0.95 |
0.95 | |||
|
LT cooling water system | |||||||
|
Pressure at engine, after pump, nom. (PT 471) |
kPa |
250+ static |
250+ static |
250+ static | |||
|
Pressure at engine, after pump, max. (PT 471) |
kPa |
440 |
440 |
440 | |||
|
Temperature before engine, max. (TE 471) |
°C |
38 |
38 |
38 | |||
|
Temperature before engine, min. (TE 471) |
°C |
25 |
25 |
25 | |||
|
Capacity of engine driven pump, nom. |
m3/h |
135 |
135 |
135 | |||
|
Pressure drop over charge air cooler |
kPa |
30 |
30 |
30 | |||
|
Pressure drop in external system, max. |
kPa |
200 |
200 |
200 | |||
|
Pressure from expansion tank |
kPa |
70...150 |
70...150 |
70...150 | |||
|
Starting air system (Note 6) | |||||||
|
Pressure, nom. (PT 301) |
kPa |
3000 |
3000 |
3000 | |||
|
Pressure at engine during start, min. (20 °C) |
kPa |
1000 |
1000 |
1000 | |||
|
Pressure, max. (PT 301) |
kPa |
3000 |
3000 |
3000 | |||
|
Low pressure limit in starting air vessel |
kPa |
1800 |
1800 |
1800 | |||
|
Consumption per start at 20 °C (successful start) |
Nm3 |
3.6 |
3.6 |
3.6 | |||
|
Consumption per start at 20 °C (with slowturn) |
Nm3 |
4.3 |
4.3 |
4.3 | |||
Notes:
Note 1 - At Gas LHV 49620kJ/kg
Note 2 - At 100% output and nominal speed. The figures are valid for ambient conditions according to ISO 15550, except for LT-water temperature, which is 35ºC in gas operation and 45ºC in back-up fuel operation. And with engine driven water, lube oil and pilot fuel pumps.
Note 3 - According to ISO 15550, lower calorific value 42700 kJ/kg, with engine driven pumps (two cooling water + one lubricating oil pumps). Tolerance 5%. Gas Lower heating value >28 MJ/m3N and Methane Number High (>80). The fuel consumption BSEC and SFOC are guaranteed at 100% load and the values at other loads are given for indication only.
Note 4 - Fuel gas pressure given at LHV ≥ 36MJ/m³N. Required fuel gas pressure depends on fuel gas LHV and need to be increased for lower LHV's. Pressure drop in external fuel gas system to be considered.
Note 5 - Lubricating oil treatment losses and oil changes are not included in oil consumption. The lubricating oil volume of the governor is depending of the governor type.
Note 6 - At manual starting the consumption may be 2...3 times lower.
ME = Engine driving propeller, variable speed
AE = Auxiliary engine driving generator
DE = Diesel-Electric engine driving generator
Subject to revision without notice.
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