W 7L32
Описание двигателя Wärtsilä 7L32
Wärtsilä 7L32 четырехтактный, нереверсивный, рядный, 7-ми цилиндровый дизельный двигатель с турбонаддувом и промежуточным охлаждением, с прямым впрыском топлива.
Технические характеристики
|
Wärtsilä 7L32 IMO Tier 2 |
|
AE/DE |
AE/DE |
ME |
|
Engine speed |
RPM |
720 |
750 |
750 |
|
Cylinder output |
kW/cyl |
480 |
500 |
500 |
|
Engine output |
kW |
3360 |
3500 |
3500 |
|
Mean effective pressure |
MPa |
2,49 |
2,49 |
2,49 |
|
Combustion air system (Note 1) |
| |||
|
Flow at 100% load |
kg/s |
5,8 |
6,1 |
6,1 |
|
Temperature at turbocharger intake, max. |
°C |
45 |
45 |
45 |
|
Air temperature after air cooler (TE 601) |
°C |
55 |
55 |
55 |
|
Exhaust gas system (Note 2) |
| |||
|
Flow at 100% load |
kg/s |
6,0 |
6,3 |
6,3 |
|
Flow at 85% load |
kg/s |
6 |
6 |
6 |
|
Flow at 75% load |
kg/s |
5,1 |
5,4 |
5,2 |
|
Flow at 50% load |
kg/s |
4 |
4 |
4 |
|
Temperature after turbocharger, 100% load (TE 517) |
°C |
380,0 |
380,0 |
380,0 |
|
Temperature after turbocharger, 85% load (TE 517) |
°C |
328,0 |
325,0 |
336,0 |
|
Temperature after turbocharger, 75% load (TE 517) |
°C |
328,0 |
325,0 |
345,0 |
|
Temperature after turbocharger, 50% load (TE 517) |
°C |
352 |
345 |
315 |
|
Backpressure, max. |
kPa |
3,0 |
3,0 |
3,0 |
|
Calculated pipe diameter for 35m/s |
mm |
633 |
649 |
649 |
|
Heat balance (Note 3) |
| |||
|
Jacket water, HT-circuit |
kW |
569,000 |
595,000 |
595,000 |
|
Charge air, HT-circuit |
kW |
551,000 |
569,000 |
569,000 |
|
Charge air, LT-circuit |
kW |
438,000 |
464,000 |
464,000 |
|
Lubricating oil, LT-circuit |
kW |
421,000 |
455,000 |
455,000 |
|
Radiation |
kW |
120 |
120 |
120 |
|
Fuel system (Note 4) |
| |||
|
Pressure before injection pumps (PT 101) |
kPa |
700±50 |
700±50 |
700±50 |
|
Engine driven pump capacity (MDF only) |
m³/h |
4,3 |
4,5 |
4,5 |
|
Fuel flow to engine (without engine driven pump), approx. |
m³/h |
3 |
4 |
4 |
|
HFO viscosity before engine |
cSt |
16...24 |
16...24 |
16...24 |
|
HFO temperature before engine, max. (TE 101) |
°C |
140 |
140 |
140 |
|
MDF viscosity, min |
cSt |
2,0 |
2,0 |
2,0 |
|
MDF temperature before engine, max. (TE 101) |
°C |
45 |
45 |
45 |
|
Fuel consumption at 100% load |
g/kWh |
184,00 |
185,00 |
185,00 |
|
Fuel consumption at 85% load |
g/kWh |
181,00 |
182,00 |
181,00 |
|
Fuel consumption at 75% load |
g/kWh |
182,0 |
183,0 |
182,0 |
|
Fuel consumption at 50% load |
g/kWh |
193,0 |
193,0 |
191,0 |
|
Clean leak fuel quantity, MDF at 100% load |
kg/h |
13,0 |
13,6 |
13,6 |
|
Clean leak fuel quantity, HFO at 100% load |
kg/h |
2,6 |
2,7 |
2,7 |
|
Lubricating oil system |
| |||
|
Pressure before bearings, nom. (PT 201) |
kPa |
500 |
500 |
500 |
|
Suction ability main pump, including pipe loss, max. |
kPa |
30,0 |
30,0 |
30,0 |
|
Priming pressure, nom. (PT 201) |
kPa |
50 |
50 |
50 |
|
Suction ability priming pump, including pipe loss, max. |
kPa |
30,0 |
30,0 |
30,0 |
|
Temperature before bearings, nom. (TE 201) |
°C |
63 |
63 |
63 |
|
Temperature after engine, approx. |
°C |
78,0 |
78,0 |
78,0 |
|
Pump capacity (main), engine driven |
m³/h |
101 |
105 |
105 |
|
Pump capacity (main), stand-by |
m³/h |
78,0 |
82,0 |
82,0 |
|
Priming pump capacity, 50Hz/60Hz |
m³/h |
21,6 / 25,9 |
21,6 / 25,9 |
21,6 / 25,9 |
|
Oil volume, wet sump, nom. |
m³ |
2 |
2 |
2 |
|
Oil volume in separate system oil tank, nom. |
m³ |
5 |
5 |
5 |
|
Oil consumption (100% load), approx. |
g/kWh |
0,5 |
0,5 |
0,5 |
|
Crankcase ventilation flow rate at full load |
l/min |
1155 |
1155 |
1155 |
|
Crankcase ventilation backpressure, max. |
kPa |
0,4 |
0,4 |
0,4 |
|
Oil volume in turning device |
liters |
8,5...9,5 |
8,5...9,5 |
8,5...9,5 |
|
Oil volume in speed governor |
liters |
2 |
2 |
2 |
|
Cooling water system |
| |||
|
High temperature 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 |
530,0 |
530,0 |
530,0 |
|
Temperature before cylinders, approx. (TE 401) |
°C |
85,00 |
85,00 |
85,00 |
|
HT-water out from engine, nom (TE402) (single stage CAC) |
°C |
96,0 |
96,0 |
96,0 |
|
HT-water out from engine, nom (TE432) (two stage CAC) |
°C |
96 |
96 |
96 |
|
Capacity of engine driven pump, nom. |
m³/h |
70,0 |
70,0 |
70,0 |
|
Pressure drop over engine, total (single stage CAC) |
kPa |
100,0 |
100,0 |
100,0 |
|
Pressure drop over engine, total (two stage CAC) |
kPa |
150,0 |
150,0 |
150,0 |
|
Pressure drop in external system, max. |
kPa |
60 |
60 |
60 |
|
Pressure from expansion tank |
kPa |
70...150 |
70...150 |
70...150 |
|
Water volume in engine |
m³ |
0 |
0 |
0 |
|
Low temperature cooling water system |
| |||
|
Pressure at engine, after pump, nom. (PT 451) |
kPa |
250 + static |
250 + static |
250 + static |
|
Pressure at engine, after pump, max. (PT 451) |
kPa |
450,0 |
450,0 |
450,0 |
|
Temperature before engine (TE 451) |
°C |
25 ... 38 |
25 ... 38 |
25 ... 38 |
|
Capacity of engine driven pump, nom. |
m³/h |
70,0 |
70,0 |
70,0 |
|
Pressure drop over charge air cooler |
kPa |
35 |
35 |
35 |
|
Pressure drop over oil cooler |
kPa |
30,0 |
30,0 |
30,0 |
|
Pressure drop in external system, max. |
kPa |
60 |
60 |
60 |
|
Pressure from expansion tank |
kPa |
70 ... 150 |
70 ... 150 |
70 ... 150 |
|
Starting air system (Note 5) |
| |||
|
Pressure, nom. |
kPa |
3 000,0 |
3 000,0 |
3 000,0 |
|
Pressure at engine during start, min. (20°C) |
kPa |
1500 |
1500 |
1500 |
|
Pressure, max. |
kPa |
3 000,0 |
3 000,0 |
3 000,0 |
|
Low pressure limit in air vessels |
kPa |
1800 |
1800 |
1800 |
|
Air consumption per start |
Nm³ |
2,4 |
2,4 |
- |
|
Air consumption per start without propeller shaft engaged |
Nm³ |
- |
- |
2 |
|
Air consumption per start with propeller shaft engaged |
Nm³ |
- |
- |
3,8 |
Notes:
Note 1 At ISO 3046-1 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Tolerance 5%.
Note 2 At ISO 3046-1 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Flow tolerance 5% and temperature tolerance 10°C.
Note 3 At ISO 3046-1 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Tolerance for cooling water heat 10%, tolerance for radiation heat 30%. Fouling factors and a margin to be taken into account when dimensioning heat exchangers.
Note 4 According to ISO 3046/1, lower calorific value 42 700 kJ/kg, with engine driven pumps (two cooling water + one lubricating oil pumps). Tolerance 5%. Load ac- cording to propeller law for mechanical propulsion engines (ME).
Note 5 Automatic (remote or local) starting air consumption (average) per start, at 20°C for a specific long start impulse (DE/AUX: 2...3 sec, CPP/FPP: 4...6 sec) which is the shortest time required for a safe start.
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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