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W 12V34DF

V34DF_разрез

Описание двигателя Wärtsilä 12V34DF

Wärtsilä 12V34DF - двенадцатицилиндровый, V-образный, 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 12V34DF  IMO Tier 2

AE/DE

AE/DE

ME

Gas

Diesel

Gas

Diesel

Gas

Diesel

Cylinder output

kW

435

450

450

Engine speed

rpm

720

750

750

Engine output

kW

5220

5400

5400

Mean effective pressure

MPa

2.0

1.98

1.98

Combustion air system (Note 1)

Flow at 100% load

kg/s

8.6

10.2

8.6

10.8

8.6

11.4

Temperature at turbocharger intake, max.

°C

45

45

45

Temperature after air cooler (TE 601), load > 70%

°C

45

-

45

-

45

-

Temperature after air cooler (TE 601), load 30...70%

°C

55

-

55

-

55

-

Temperature after air cooler (TE 601)

°C

-

50

-

50

-

50

Exhaust gas system (Note 2)

Flow at 100% load

kg/s

8.8

10.5

8.8

11.1

8.8

11.7

Flow at 75% load

kg/s

7.3

7.9

7.3

8.7

7.0

8.2

Flow at 50% load

kg/s

5.5

5.3

5.5

5.6

5.8

6.3

Temperature after turbocharger at 100% load (TE 517)

°C

385

350

385

340

390

315

Temperature after turbocharger at 75% load (TE 517)

°C

415

375

415

355

400

345

Temperature after turbocharger at 50% load (TE 517)

°C

440

420

440

410

345

350

Backpressure, max.

kPa

4

4

4

Calculated exhaust diameter for 35 m/s

mm

770

817

770

836

773

840

Heat balance at 100% load (Note 3)

Jacket water, HT-circuit

kW

900

970

940

1010

940

1060

Charge air, HT-circuit

kW

640

1140

660

1270

660

1380

Charge air, LT-circuit

kW

490

510

500

540

500

630

Lubricating oil, LT-circuit

kW

520

580

540

610

540

620

Radiation

kW

200

210

200

220

200

220

Fuel consumption (Note 4)

Total energy consumption at 100% load

kJ/kWh

7620

-

7620

-

7620

-

Total energy consumption at 75% load

kJ/kWh

8090

-

8090

-

7960

-

Total energy consumption at 50% load

kJ/kWh

8750

-

8750

-

8170

-

Fuel gas consumption at 100% load

kJ/kWh

7543

-

7543

-

7543

-

Fuel gas consumption at 75% load

kJ/kWh

7972

-

7972

-

7839

-

Fuel gas consumption at 50% load

kJ/kWh

8534

-

8534

-

7972

-

Fuel oil consumption at 100% load

g/kWh

2.0

189

2.0

191

2.0

193

Fuel oil consumption at 75% load

g/kWh

2.8

193

2.8

195

2.7

187

Fuel oil consumption 50% load

g/kWh

4.9

200

4.9

202

4.5

192

Fuel gas system (Note 5)

Gas pressure at engine inlet, min (PT901)

kPa (a)

452

-

452

-

452

-

Gas pressure to Gas Valve Unit, min

kPa (a)

572

-

572

-

572

-

Gas temperature before Gas Valve Unit

°C

0...60

-

0...60

-

0...60

-

Fuel oil system

Pressure before injection pumps (PT 101)

kPa

700±50

700±50

700±50

Fuel oil flow to engine, approx

m3/h

5.6

5.8

5.9

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 (MDF), clean fuel at 100% load

kg/h

10.3

20.7

10.8

21.6

10.9

21.8

Pilot fuel (MDF) viscosity before the engine

cSt

2...11

2...11

2...11

Pilot fuel pressure at engine inlet (PT 112)

kPa (a)

550...750

550...750

550...750

Pilot fuel pressure drop after engine, max

kPa

150

150

150

Pilot fuel return flow at 100% load

kg/h

680

680

680

Lubricating oil system

Pressure before bearings, nom. (PT 201)

kPa

500

500

500

Suction ability, including pipe loss, max.

kPa

40

40

40

Priming pressure, nom. (PT 201)

kPa

50

50

50

Suction ability priming pump, including pipe loss, max.

kPa

35

35

35

Temperature before bearings, nom. (TE 201)

°C

63

63

63

Temperature after engine, approx.

°C

81

81

81

Pump capacity (main), engine driven

m3/h

124

129

129

Pump capacity (main), electrically driven

m3/h

106

110

110

Priming pump capacity (50/60Hz)

m3/h

38.0 / 45.9

38.0 / 45.9

38.0 / 45.9

Oil volume in separate system oil tank

m3

6

6

6

Oil consumption at 100% load, approx.

g/kWh

0.4

0.4

0.4

Crankcase ventilation flow rate at full load

l/min

1680

1680

1680

Crankcase ventilation backpressure, max.

kPa

0.3

0.3

0.3

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...2.2

1.4...2.2

1.4...2.2

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

530

530

530

Temperature before cylinders, approx. (TE 401)

°C

85

85

85

Temperature after engine, nom.

°C

96

96

96

Capacity of engine driven pump, nom.

m3/h

100

100

100

Pressure drop over engine, total

kPa

100

100

100

Pressure drop in external system, max.

kPa

150 (1.5)

150 (1.5)

150 (1.5)

Pressure from expansion tank

kPa

70...150

70...150

70...150

Water volume in engine

m3

0.74

0.74

0.74

Delivery head of stand-by pump

kPa

250

250

250

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

530

530

530

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

100

100

100

Pressure drop over charge air cooler

kPa

35

35

35

Pressure drop in external system, max.

kPa

200 (2.0)

200 (2.0)

200 (2.0)

Pressure from expansion tank

kPa

70...150

70...150

70...150

Delivery head of stand-by pump

kPa

250

250

250

Starting air system

Pressure, nom.

kPa

3000

3000

3000

Pressure, max.

kPa

3000

3000

3000

Low pressure limit in starting air receiver

kPa

1600

1600

1600

Starting air consumption, start (successful)

Nm3

6.8

6.8

6.8

Consumption per start at (with slowturn)

Nm3

8.8

8.8

8.8

Wärtsilä 12V34DF  IMO Tier 2

AE/DE

AE/DE

ME

Gas

Diesel

Gas

Diesel

Gas

Diesel

Cylinder output

kW

480

500

500

Engine speed

rpm

720

750

750

Engine output

kW

5760

6000

6000

Mean effective pressure

MPa

2.2

2.2

2.2

Combustion air system (Note 1)

Flow at 100% load

kg/s

8.7

10.5

8.8

11.1

8.8

11.1

Temperature at turbocharger intake, max.

°C

45

45

45

Temperature after air cooler (TE 601), load > 70%

°C

45

-

45

-

45

-

Temperature after air cooler (TE 601), load 30...70%

°C

55

-

55

-

55

-

Temperature after air cooler (TE 601)

°C

-

50

-

50

-

50

Exhaust gas system (Note 2)

Flow at 100% load

kg/s

8.9

10.8

9.1

11.4

9.1

11.4

Flow at 75% load

kg/s

6.6

8.6

6.7

9.1

7.6

8.3

Flow at 50% load

kg/s

6.1

6.0

6.2

6.3

5.7

6.2

Temperature after turbocharger at 100% load (TE 517)

°C

380

340

380

335

380

335

Temperature after turbocharger at 75% load (TE 517)

°C

425

320

425

315

365

340

Temperature after turbocharger at 50% load (TE 517)

°C

386

340

386

340

353

343

Backpressure, max.

kPa

4

4

4

Calculated exhaust diameter for 35 m/s

mm

772

825

779

843

779

843

Heat balance at 100% load (Note 3)

Jacket water, HT-circuit

kW

930

998

970

1046

970

1046

Charge air, HT-circuit

kW

994

1662

1084

1740

1084

1740

Charge air, LT-circuit

kW

46

478

486

580

486

580

Lubricating oil, LT-circuit

kW

570

608

594

636

594

636

Radiation

kW

196

214

204

222

204

224

Fuel consumption (Note 4)

Total energy consumption at 100% load

kJ/kWh

7370

-

7370

-

7400

-

Total energy consumption at 75% load

kJ/kWh

7580

-

7580

-

7580

-

Total energy consumption at 50% load

kJ/kWh

8410

-

8410

-

8450

-

Fuel gas consumption at 100% load

kJ/kWh

7286

-

7286

-

7286

-

Fuel gas consumption at 75% load

kJ/kWh

7458

-

7458

-

7467

-

Fuel gas consumption at 50% load

kJ/kWh

8248

-

8248

-

7562

-

Fuel oil consumption at 100% load

g/kWh

1.9

185

1.9

186

1.9

186

Fuel oil consumption at 75% load

g/kWh

2.6

182

2.6

183

2.4

180

Fuel oil consumption 50% load

g/kWh

3.8

189

3.8

190

3.0

182

Fuel gas system (Note 5)

Gas pressure at engine inlet, min (PT901)

kPa (a)

452

-

452

-

452

-

Gas pressure to Gas Valve Unit, min

kPa (a)

572

-

572

-

572

-

Gas temperature before Gas Valve Unit

°C

0...60

-

0...60

-

0...60

0...60

Fuel oil system

Pressure before injection pumps (PT 101)

kPa

700±50

700±50

700±50

Fuel oil flow to engine, approx

m3/h

6.0

6.3

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 (MDF), clean fuel at 100% load

kg/h

11.2

22.3

11.7

23.4

11.7

23.4

Pilot fuel (MDF) viscosity before the engine

cSt

2...11

2...11

2...11

Pilot fuel pressure at engine inlet (PT 112)

kPa (a)

550...750

550...750

550...750

Pilot fuel pressure drop after engine, max

kPa

150

150

150

Pilot fuel return flow at 100% load

kg/h

680

680

680

Lubricating oil system

Pressure before bearings, nom. (PT 201)

kPa

500

500

500

Suction ability, including pipe loss, max.

kPa

40

40

40

Priming pressure, nom. (PT 201)

kPa

50

50

50

Suction ability priming pump, including pipe loss, max.

kPa

35

35

35

Temperature before bearings, nom. (TE 201)

°C

63

63

63

Temperature after engine, approx.

°C

81

81

81

Pump capacity (main), engine driven

m3/h

124

129

129

Pump capacity (main), electrically driven

m3/h

106

110

110

Priming pump capacity (50/60Hz)

m3/h

38.0 / 45.9

38.0 / 45.9

38.0 / 45.9

Oil volume in separate system oil tank

m3

6

6

6

Oil consumption at 100% load, approx.

g/kWh

0.4

0.4

0.4

Crankcase ventilation flow rate at full load

l/min

1680

1680

1680

Crankcase ventilation backpressure, max.

kPa

0.3

0.3

0.3

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...2.2

1.4...2.2

1.4...2.2

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

530

530

530

Temperature before cylinders, approx. (TE 401)

°C

85

85

85

Temperature after engine, nom.

°C

96

96

96

Capacity of engine driven pump, nom.

m3/h

100

100

100

Pressure drop over engine, total

kPa

100

100

100

Pressure drop in external system, max.

kPa

150 (1.5)

150 (1.5)

150 (1.5)

Pressure from expansion tank

kPa

70...150

70...150

70...150

Water volume in engine

m3

0.74

0.74

0.74

Delivery head of stand-by pump

kPa

250

250

250

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

530

530

530

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

100

100

100

Pressure drop over charge air cooler

kPa

35

35

35

Pressure drop in external system, max.

kPa

200 (2.0)

200 (2.0)

200 (2.0)

Pressure from expansion tank

kPa

70...150

70...150

70...150

Delivery head of stand-by pump

kPa

250

250

250

Starting air system

Pressure, nom.

kPa

3000

3000

3000

Pressure, max.

kPa

3000

3000

3000

Low pressure limit in starting air receiver

kPa

1600

1600

1600

Starting air consumption, start (successful)

Nm3

6.8

6.8

6.8

Consumption per start at (with slowturn)

Nm3

8.8

8.8

8.8

Notes:

Note 1 At Gas LHV 49620kJ/kg

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 in gas mode operation. Flow tolerance 8% and temperature tolerance 15°C in diesel mode operation.

Note 3 At 100% output and nominal speed. The figures are valid for ambient conditions according to ISO 3046/1, except for LT-water temperature, which is corresponding to charge air receiver temperature 45ºC in gas operation. With engine driven water and lubricating oil pumps. 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 At ambient conditions according to ISO 3046/1, fuel net calorific value 42700 kJ/kg, with engine driven pumps (two cooling water + one lubricating oil pumps). Tolerance 5%.

Note 5 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. See chapter Fuel system for further information.

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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