覿覿 - hhm.cssc.net.cnhhm.cssc.net.cn/images/wartsila.pdf ·...

1. Crankshaft2. Bottom end of

connecting rod3. Connecting rod4. Crosshead5. Crosshead guide shoes6. Piston rod7. Piston8. Exhaust valve9. Bedplate10. Column11. Cylinder block12. Tie rods

13. Diaphragm14. Piston rod gland15. Cylinder liner16. Scavenge air ports17. Anti-Polishing Ring18. Cylinder cover19. Exhaust valve cage20. Exhaust manifold21. Auxiliary scavenge

air blower22. Flywheel23. Turning gear24. RT-flex supply unit

25. High-pressure fuelsupply pumps

26. Servo oil pumps27. Rail unit28. Fuel oil rail with injection

control units29.Servo oil rail with

exhaust valve actuators30. HP fuel pipes to fuel

injection valves31. Exhaust valve drive32. Electronic cabinets

覿覿

要要要

1

W覿rtsil覿's solutions are customized to specific ship design and operationalrequirements to ensure maximum efficiency, reliability and environmentalperformance over the entire lifecycle of the installation. Examples of W覿rtsil覿'srecent achievements in environmental care are RT-flex engines, dual-fuelengines for LNG carriers and environmentally friendly stern tube sealingsystems.

The Annex VI of the MARPOL 73/78 convention entered into force on 19 May2005. All W覿rtsil覿 and MHI diesel engines included in this booklet comply withthe speed-dependent NOx limit.

W覿rtsil覿 RT-flex engines offer distinct benefits to shipowners. A clearly visiblebenefit is smokeless operation at all ship speeds. Reduced running costs ofW覿rtsil覿 RT-flex engines derive from reduced maintenance requirements andlower part-load fuel consumption. Precise control of injection, high injectionpressures at Iow speed, and the sequential shut-off of injectors gives steadyrunning at very Iow running speeds without smoking, down to 10-12% ofnominal speed. Particular attention has been given to making the Rf-flexsystem reliable. The common-rail concept also has inherent redundancy,adding to reliability and safety.

SCR(Selective Catalytic Reduction) can reduce NOX emissions by 85-95%.This technology offers the possibility to lower NOX emissions far below anyother technology present on the market.It can satisfy current and future limits.

IMO NOx REGULATION

ENVIRONMENTAL CONCEPTS FOR LOW-SPEED ENGINESRT-FLEX

SCR

ENVIRONMENTAL TECHNOLOGIES

2

W覿rtsil覿 RTA-series engines are traditional Iow-speed diesel engines withmechanically-driven camshaft, double-valve controlled fuel injection pumps,exhaust valve actuator pumps and reversing servomotors.

W覿rtsil覿 RT-flex engines are based on the RTA-series but have electronically-controlled common-rail systems for fuel injection and valve actuation.

W魧RTSIL魧 RTA-SERIES ENGINES

W魧RTSIL魧 RT-FLEX ENGINES

LOW-SPEED ENGINES

RTA48T-B(D)

RT-flex50-B,RTA50-B(D)

RTA52U

RT-flex58T-B,RTA58T-B(D)

RT-flex60C-B

RTA62U-B

RT-flex68-D,RTA68-D(B)

RTA72U-B

RT-flex84T-D,RTA84T-D

RT-flex82T,RTA82T

RT-flex82C,RTA82C

RT-flex96C,RTA96C(B.D)

MW 2 3

RTA48T-B(D)

RT-flex50-B,RTA50-B(D)

RTA52U

RT-flex58T-B,RTA58T-B(D)

RT-flex60C-B

RTA62U-B

RT-flex68-D,RTA68-D(B)

RTA72U-B

RT-flex84T-D,RTA84T-D

RT-flex82T,RTA82T

RT-flex82C,RTA82C

RT-flex96C,RTA96C(B.D)

MW 2 3

3

102-127

99-124

108-135

84-105

90-105

92-115

76-95

79-99

61-76

68-80

87-102

POWER RANGE FOR LOW-SPEED ENGINES Speed rpm

3 4 6 8 10 15 20 30 40 60 80

W覿rtsil覿 RT-flex

W覿rtsil覿 RTA

92-102

As well as the proven benefits of the RTA engines, the RT-flex engines havethe additional benefits of:● Smokeless operation at all running speeds● Better fuel economy in the part-load range● Reduced maintenance requirements, with simpler engine setting and

extendable times between overhauls● Lower steady running speeds.

102-127

99-124

108-135

84-105

90-105

92-115

76-95

79-99

61-76

68-80

87-102

POWER RANGE FOR LOW-SPEED ENGINES Speed rpm

3 4 6 8 10 15 20 30 40 60 80

W覿rtsil覿 RT-flex

W覿rtsil覿 RTA

92-102

4

Rated power: Propulsion engines

Cyl.

Output in kW/bhp at

127 rpm 102 rpm

R1 R2 R3 R4

kW bhp kW bhp kW bhp kW bhp

5678

7 2758 730

10 18511 640

9 90011 88013 86015 840

5 1006 1207 1408 160

6 9258 3109 695

11 080

5 8256 9908 1559 320

7 9259 510

11 09512 680

5 1006 1207 1408 160

6 9258 3109 695

11 080

Brake specific fuel consumption (BSFC)

g/kWh g/bhph g/kWh g/bhph g/kWh g/bhph g/kWh g/bhph

Load 100% 169 124 161 118 169 124 165 121

BMEP, bar 19.0 13.3 18.9 16.6

* Standard piston dismantling height, can be reduced with tilted piston withdrawal.For definitions see page 23.

RTA48T-DMain data:Cylinder bore 480 mmPiston stroke 2000 mmSpeed 102-127 rpmMean effective pressure at R1 19.0 bar

Piston speed 8.5 m/sFuel specification:Fuel oil 730 cSt/50° C

7200 sR1/100° FISO 8217, category ISO-F-RMK 55

Principal engine dimensions (mm) and weights (tonnes)

5678

Cyl. A B C D E F* G I K Weight

4 9665 8006 6347 468

3 1703 1703 1703 170

1 0851 0851 0851 085

7 3347 3347 3347 334

3 2533 2533 2533 253

9 0309 0309 0309 030

1 7001 7001 7001 700

603603603603

348348348348

171205225250

Cyl.127 rpm

ER1 ER2

kW bhp kW bhp

5678

6 9008 2809 660

11 040

9 37511 25013 12515 000

6 5507 8609 170

10 480

8 90010 68012 46014 240

Output in kW/bhp atRated power: Propulsion engines

g/kWh g/bhph g/kWh g/bhph

Load 100% 167 123 166 122

BMEP, bar 18.0 17.1


Power

Speed

▲

R3

R4

Enginelayout field

Engine-MCR

R1

ER2

ER1

R2

5


Cyl.

Output in kW/bhp at

127 rpm 102 rpm

R1 R2 R3 R4


5

6

7

8

7 275

8 730

10 185

11 640

9 900

11 880

13 860

15 840

5 100

6 120

7 140

8 160

6 925

8 310

9 695

11 080

5 825

6 990

8 155

9 320

7 925

9 510

11 095

12 680

5 100

6 120

7 140

8 160

6 925

8 310

9 695

11 080



Load 100% 171 126 163 120 171 126 167 123

BMEP, bar 19.0 13.3 18.9 16.6


5

6

7

8


4 966

5 800

6 634

7 468

3 170

3 170

3 170

3 170

1 085

1 085

1 085

1 085

7 334

7 334

7 334

7 334

3 253

3 253

3 253

3 253

9 030

9 030

9 030

9 030

1 700

1 700

1 700

1 700

603

603

603

603

348

348

348

348

171

205

225

250


RTA48T-BMain data:Cylinder bore 480 mmPiston stroke 2000 mmSpeed 102-127 rpmMean effective pressure at R1 19.0 bar



6

Brake specific fuel consumption(BSFC)


Load 100% 171 126 165 121 171 126 167 123

BMEP, bar 20.0 13.9 20.0 17.5


5

6

7

8


5 227

6 107

6 987

7 867

3 150

3 150

3 150

3 150

1 088

1 088

1 088

1 088

7 646

7 646

7 646

7 646

3 300

3 300

3 300

3 300

9 270

9 270

9 270

9 270

1 636

1 636

1 636

1 636

631

631

631

631

355

355

355

355

200

225

255

280


Cyl.

Output in kW/bhp at

124 rpm 99 rpm

R1 R2 R3 R4


5

6

7

8

8 300

9 960

11 620

13 280

11 300

13 560

15 820

18 080

5 800

6 960

8 120

9 280

7 900

9 480

11 060

12 640

6 650

7 980

9 310

10 640

9 050

10 860

12 670

14 480

5 800

6 960

8 120

9 280

7 900

9 480

11 060

12 640

* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA50-B and RT-flex50-B versions. However, there may be differencesin weights for the RT-flex50-B.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

Main data:Cylinder bore 500 mmPiston stroke 2050 mmSpeed 99-124 rpmMean effective pressure at R1 20.0 bar



RT-flex50-B RTA50-B

7



Load 100% 169 124 163 120 169 124 165 121

BMEP, bar 21.0 14.7 21.0 18.4


5

6

7

8


5 227

6 107

6 987

7 867

3 150

3 150

3 150

3 150

1 088

1 088

1 088

1 088

7 646

7 646

7 646

7 646

3 300

3 300

3 300

3 300

9 270

9 270

9 270

9 270

1 636

1 636

1 636

1 636

631

631

631

631

355

355

355

355

200

225

255

280


Cyl.

Output in kW/bhp at

124 rpm 99 rpm

R1 R2 R3 R4


5

6

7

8

8 725

10 470

12 215

13 960

11 875

14 250

16 625

19 000

6 100

7 320

8 540

9 760

8 300

9 960

11 620

13 280

6 975

8 370

9 765

11 160

9 500

11 400

13 300

15 200

6 100

7 320

8 540

9 760

8 300

9 960

11 620

13 280

* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA50-D and RT-flex50-D versions.However,there may be differences in weightsfor the RT-flex50-D.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.




RT-flex50-D RTA50-D

8



Load 100% 174 128 166 122 173 128 169 124

BMEP, bar 18.1 12.7 18.1 15.8


5

6

7

8


5 605

6 525

7 445

8 365

3 030

3 030

3 030

3 030

1 150

1 150

1 150

1 150

7 480

7 480

7 480

7 480

3 540

3 540

3 540

3 540

8 745

8 745

8 745

8 745

1 595

1 595

1 595

1 595

570

570

570

570

480

480

480

480

210

240

270

300


Cyl.

Output in kW/bhp at

135 rpm 108 rpm

R1 R2 R3 R4


5

6

7

8

7 800

9 360

10 920

12 480

10 600

12 720

14 840

16 960

5 450

6 540

7 630

8 720

7 400

8 880

10 360

11 840

6 250

7 500

8 750

10 000

8 500

10 200

11 900

13 600

5 450

6 540

7 630

8 720

7 400

8 880

10 360

11 840

RTA52UMain data:Cylinder bore 520 mmPiston stroke 1800 mmSpeed 108-135 rpmMean effective pressure at R1 18.1 bar




9



Load 100% 170 125 162 119 170 125 166 122

BMEP, bar 19.5 13.7 19.5 17.1


5

6

7

8


5 981

6 987

7 993

8 999

3 820

3 820

3 820

3 820

1 300

1 300

1 300

1 300

8 810

8 810

8 810

8 810

3 475

3 475

3 475

3 475

10 880

10 880

10 880

10 880

2 000

2 000

2 000

2 000

604

604

604

604

400

400

400

400

281

322

377

418


Cyl.

Output in kW/bhp at

105 rpm 84 rpm

R1 R2 R3 R4


5

6

7

8

10 900

13 080

15 260

17 440

14 825

17 790

20 755

23 720

7 650

9 180

10 710

12 240

10 400

12 480

14 560

16 640

8 700

10 440

12 180

13 920

11 850

14 220

16 590

18 960

7 650

9 180

10 710

12 240

10 400

12 480

14 560

16 640

RT-flex58T-B RTA58T-BMain data:Cylinder bore 580 mmPiston stroke 2416 mmSpeed 84-105 rpmMean effective pressure at R1 19.5 bar



* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA58T-B and RT-flex58T-B versions. However, there may be differencesin weights for the RT-flex58T-B engines.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

10



Load 100% 170 125 162 119 170 125 166 122

BMEP, bar 20.2 14.1 20.2 17.7


5

6

7

8


5 981

6 987

7 993

8 999

3 820

3 820

3 820

3 820

1 300

1 300

1 300

1 300

8 810

8 810

8 810

8 810

3 475

3 475

3 475

3 475

10 880

10 880

10 880

10 880

2 000

2 000

2 000

2 000

604

604

604

604

400

400

400

400

281

322

377

418


Cyl.

Output in kW/bhp at

105 rpm 84 rpm

R1 R2 R3 R4


5

6

7

8

11 300

13 560

15 820

18 080

15 375

18 450

21 525

24 600

7 900

9 480

11 060

12 640

10 750

12 900

15 050

17 200

9 050

10 860

12 670

14 480

12 300

14 760

17 220

19 680

7 900

9 480

11 060

12 640

10 750

12 900

15 050

17 200

RT-flex58T-D RTA58T-DMain data:Cylinder bore 580 mmPiston stroke 2416 mmSpeed 84-105 rpmMean effective pressure at R1 20.2 bar



* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA58T-D and RT-flex58T-D versions. However, there may be differencesin weights for the RT-flex58T-D engines.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

11



Load 100% 170 125 164 120 170 125 166 122

BMEP, bar 20.0 14.0 20.0 17.5


56789


6 2137 2538 2939 333

10 373

3 7003 7003 7003 7003 700

1 3001 3001 3001 3001 300

8 5708 5708 5708 5708 570

3 6603 6603 6603 6603 660

10 50010 50010 50010 50010 500

1 9551 9551 9551 9551 955

647647647647647

425425425425425

268322377428480


Cyl.

Output in kW/bhp at

114 rpm 91 rpm

R1 R2 R3 R4


56789

12 10014 52016 94019 36021 780

16 45019 74023 03026 32029 610

8 45010 14011 83013 52015 210

11 50013 80016 10018 40020 700

9 65011 58013 51015 44017 370

13 12515 75018 37521 00023 625

8 45010 14011 83013 52015 210

11 50013 80016 10018 40020 700

RT-flex60C-BMain data:Cylinder bore 600 mmPiston stroke 2250 mmSpeed 91-114 rpmMean effective pressure at R1 20.0 bar



* Standard piston dismantling height, can be reduced with tilted piston withdrawal.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

12



Load 100% 173 127 167 123 173 127 169 124

BMEP, bar 18.4 12.9 18.4 16.1


5

6

7

8


6 457

7 557

8 657

9 757

3 560

3 560

3 560

3 560

1 350

1 350

1 350

1 350

8 750

8 750

8 750

8 750

3 520

3 520

3 520

3 520

10 300

10 300

10 300

10 300

1 880

1 880

1 880

1 880

615

615

615

615

383

383

383

383

320

370

420

470


Cyl.

Output in kW/bhp at

115 rpm 92 rpm

R1 R2 R3 R4


5

6

7

8

11 425

13 710

15 995

18 280

15 550

18 660

21 770

24 880

8 000

9 600

11 200

12 800

10 875

13 050

15 225

17 400

9 150

10 980

12 810

14 640

12 450

14 940

17 430

19 920

8 000

9 600

11 200

12 800

10 875

13 050

15 225

17 400

RTA62U-BMain data:Cylinder bore 620 mmPiston stroke 2150 mmSpeed 92-115 rpmMean effective pressure at R1 18.4 bar




13



Load 100% 169 124 161 118 169 124 165 121

BMEP, bar 19.6 13.7 19.6 17.2


5

6

7

8


7 005

8 185

9 365

10 545

4 300

4 300

4 300

4 300

1 520

1 520

1 520

1 520

10 400

10 400

10 400

10 400

4 490

4 490

4 490

4 490

12 545

12 545

12 545

12 545

2 340

2 340

2 340

2 340

789

789

789

789

525

525

525

525

412

472

533

593


Cyl.

Output in kW/bhp at

95 rpm 76 rpm

R1 R2 R3 R4


5

6

7

8

15 350

18 420

21 490

24 560

20 875

25 050

29 225

33 400

10 750

12 900

15 050

17 200

14 625

17 550

20 475

23 400

12 250

14 700

17 150

19 600

16 650

19 980

23 310

26 640

10 750

12 900

15 050

17 200

14 625

17 550

20 475

23 400

RT-flex68-B RTA68-BMain data:Cylinder bore 680 mmPiston stroke 2720 mmSpeed 76-95 rpmMean effective pressure at R1 19.6 bar



* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA68-B and RT-flex68-B versions. However, there may be differencesin weights for the RT-flex68-B.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

14



Load 100% 169 124 161 118 169 124 165 121

BMEP, bar 20.0 14.0 20.0 17.5


5

6

7

8


7 005

8 185

9 365

10 545

4 300

4 300

4 300

4 300

1 520

1 520

1 520

1 520

10 400

10 400

10 400

10 400

4 490

4 490

4 490

4 490

12 545

12 545

12 545

12 545

2 340

2 340

2 340

2 340

789

789

789

789

525

525

525

525

412

472

533

593


Cyl.

Output in kW/bhp at

95 rpm 76 rpm

R1 R2 R3 R4


5

6

7

8

15 650

18 780

21 910

25 040

21 275

25 530

29 785

30 040

10 950

13 140

15 330

17 520

14 900

17 880

20 860

23 840

12 500

15 000

17 500

20 000

17 000

20 400

23 800

27 200

10 950

13 140

15 330

17 520

14 900

17 880

20 860

23 840

RT-flex68-D RTA68-DMain data:Cylinder bore 680 mmPiston stroke 2720 mmSpeed 76-95 rpmMean effective pressure at R1 20.0 bar



* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTA68-D and RT-flex68-D versions. However, there may be differencesin weights for the RT-flex68-D.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

15



Load 100% 171 126 165 121 171 126 167 123

BMEP, bar 18.3 12.8 18.4 16.1


5

6

7

8


7 505

8 795

10 085

11 375

4 070

4 070

4 070

4 070

1 570

1 570

1 570

1 570

10 195

10 195

10 195

10 195

3 843

3 843

3 843

3 843

11 875

11 875

11 875

11 875

2 155

2 155

2 155

2 155

715

715

715

715

475

475

475

475

485

565

640

715


Cyl.

Output in kW/bhp at

99 rpm 79 rpm

R1 R2 R3 R4


5

6

7

8

15 400

18 480

21 560

24 640

20 950

25 140

29 330

33 520

10 775

12 930

15 085

17 240

14 650

17 580

20 510

23 440

12 300

14 760

17 220

19 680

16 725

20 070

23 415

26 760

10 775

12 930

15 085

17 240

14 650

17 580

20 510

23 440

RTA72U-BMain data:Cylinder bore 720 mmPiston stroke 2500 mmSpeed 79-99 rpmMean effective pressure at R1 18.3 bar




16


6789101112

Cyl.10 35511 86013 36515 81017 31518 82020 325

4 5704 5704 5704 5704 5704 5704 570

1 6001 6001 6001 6001 6001 6001 600

10 93010 93010 93010 93010 93010 93010 930

2 3102 3102 3102 3102 3102 3102 310

940940940940940940940

690690690690690690690

800910

1 0201 1401 2501 3601 470

A B C D G I K Weight5 1005 1005 4005 4005 4005 4005 400

12 50012 50012 50012 50012 50012 50012 500

E F*

RT-flex82C RTA82C



Load 100% 171/169 126/124 165/165 121/121 171 126 167 123

BMEP, bar 20.0/19.0 16.0/15.2 20.0 17.9


Cyl.

Output in kW/bhp at

97/102 rpm 87 rpm

R1/R1+ R2/R2+ R3 R4


6789101112

27 12031 64036 16040 68045 20049 72054 240

36 90043 05049 20055 35061 50067 65073 800

21 72025 34028 96032 58036 20039 82043 440

29 52034 44039 36044 28049 20054 12059 040

24 30028 35032 40036 45040 50044 55048 600

33 06038 57044 08049 59055 10060 61066 120

21 72025 34028 96032 58036 20039 82043 440

29 52034 44039 36044 28049 20054 12059 040

Main data:Cylinder bore 820 mmPiston stroke 2646 mmSpeed 87-102 rpmMean effective pressureat R1/R1+ 20.0/19.0 bar

Piston speed at R1/R1+ 8.6/9.0 m/sFuel specification:Fuel oil 730 cSt/50° C


* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RT-flex-82C and RTA82C versions. However, there may be differences inweights for the two versions.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.

17



Load 100% 167/165 123/121 162/162 119/119 167 123 164 120

BMEP, bar 20.0/19.0 16.0/15.2 20.0 17.9


Cyl.

Output in kW/bhp at

76/80 rpm 68 rpm

R1/R1+ R2/R2+ R3 R4


5

6

7

8

27 120

31 640

36 160

40 680

36 900

43 050

49 200

55 350

21 720

25 340

28 960

32 580

29 520

34 440

39 360

44 280

24 300

28 350

32 400

36 450

33 060

38 570

44 080

49 590

21 720

25 340

28 960

32 580

29 520

34 440

39 360

44 280

RT-flex82T RTA82TMain data:Cylinder bore 820 mmPiston stroke 3375 mmSpeed 68-80 rpmMean effective pressureat R1/R1+ 20.0/19.0 bar

Piston speed at R1/R1+ 8.6/9.0 m/sFuel specification:Fuel oil 730 cSt/50° C


* Standard piston dismantling height, can be reduced with tilted piston withdrawal.All the above data apply to both RTflex-82T and RTA82T versions. However, there may be differencesin weights for the two versions.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.


5

6

7

8

Cyl.

10 355

11 860

13 365

15 810

5 320

5 320

5 320

5 320

1 800

1 800

1 800

1 800

12 250

12 250

12 250

12 250

2 700

2 700

2 700

2 700

940

940

940

940

690

690

690

690

840

950

1 060

1 180

A B C D G I K Weight

5 100

5 100

5 400

5 400

15 000

15 000

15 000

15 000

E F*

18

RT-flex84T-D RTA84T-D



Load 100% 167 123 160 118 167 123 164 121

BMEP, bar 19.0 13.3 19.0 16.6


Cyl.

Output in kW/bhp at

76 rpm 61 rpm

R1 R2 R3 R4


56789

21 00025 20029 40033 60037 800

28 57534 29040 00545 72051 435

14 70017 64020 58023 52026 460

20 00024 00028 00032 00036 000

16 85020 22023 59026 96030 330

22 90027 48032 06036 64041 220

14 70017 64020 58023 52026 460

20 00024 00028 00032 00036 000

* Standard piston dismantling height, can be reduced with tilted piston withdrawal. The RTA84T-B is availableat lower power outputs than the version D above, and complies with the IMO NOx regulation.All the above data apply to both RTA84-D and RT-flex84T-D versions. However, there may be differences inweights for the RT-flex84T-D.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.





56789


8 89010 39011 89014 39015 890

5 0005 0005 0005 0005 000

1 8001 8001 8001 8001 800

12 15012 15012 15012 15012 150

5 1055 1055 1055 1055 105

14 50014 50014 50014 50014 500

2 7002 7002 7002 7002 700

760760760760760

805805805805805

740870990

1 1401 260

19

RT-flex96C RTA96C



Load 100% 171 126 163 120 171 126 164 121

BMEP, bar 19.6 13.7 19.6 15.2


Cyl.

Output in kW/bhp at

102 rpm 92 rpm

R1 R2 R3 R4


67891011121314

36 18042 21048 24054 27060 30066 33072 36078 39084 420

49 20057 40065 60073 80082 00090 20098 400

106 600114 800

25 32029 54033 76037 98042 20046 42050 64054 86059 080

34 44040 18045 92051 66057 40063 14068 88074 62080 360

32 58038 01043 44048 87054 30059 73065 16070 59076 020

44 28051 66059 04066 42073 80081 18088 56095 940

103 320

25 32029 54033 76037 98042 20046 42050 64054 86059 080

34 44040 18045 92051 66057 40063 14068 88074 62080 360




* Standard piston dismantling height, can be reduced with tilted piston withdrawal.13-and 14-cylinder engines are only available in RT-flex versions, and not RTA versions.All the above data apply to both RTA96C and RT-flex96C versions. However, there may be differences inweights for the RT-flex96C.W覿rtsil覿 RT-flex engines are also available with part-load optimisation for lower fuel consumptions.For definitions see page 23.


67891011121314

Cyl. A B C D E F* G I K Weight11 56413 24415 83417 51419 19420 87422 55424 23425 914

4 4804 4804 4804 4804 4804 4804 4804 4804 480

1 8001 8001 8001 8001 8001 8001 8001 8001 800

10 92510 92510 92510 92510 92510 92510 92510 92510 925

5 3805 3805 3805 3805 3805 3805 3805 3805 380

12 95012 95012 95012 95012 95012 95012 95012 95012 950

2 5942 5942 5942 5942 5942 5942 5942 5942 594

723723723723723723723723723

676676676676676676676676676

1 1601 2901 4701 6201 7601 9102 0502 1602 300

20

Main data RTA72U

Cylinder bore 720 mm

Piston stroke 2 500 mm

Mean effective pressure, R1 18.2 bar

Piston speed 8.1 m/s

Speed at R1 97 rpm

Power at R1

Cylinders kW bhp

5 14 950 20 350

6 17 940 24 420

7 20 930 28 490

8 23 920 32 560

BSFC at R1 g/kWh g/bhph

Load 100% 171 126

Main data RTA84C





Speed at R1 102 rpm

Power at R1

Cylinders kW bhp

6 24 300 33 060

7 28 350 38 570

8 32 400 44 080

9 36 450 49 590

10 40 500 55 100

11 44 550 60 160

12 48 600 66 120


Load 100% 171 126

Main data RTA84T-B


Piston stroke 3 150mm



Speed at R1 74 rpm

Power at R1

Cylinders kW bhp

5 19 400 26 400

6 23 280 31 680

7 27 160 36 960

8 31 040 42 240

9 34 920 47 520


Load 100% 168 123

Other W覿rtsil覿 RTA and RT-flex engines remain in production at licensees with continuingsupport from W覿rtsil覿. Data below are for the R1 ratings on the usual layout fields.

RTA AND RT-FLEX SERIES

Main data RTA48T





Speed at R1 124 rpm

Power at R1

Cylinders kW bhp

5 6 800 9 250

6 8 160 11 100

7 9 520 12 950

8 10 880 14 800

9


Load 100% 171 126

21

Main data RT-flex50





Speed at R1 124 rpm

Power at R1

Cylinders kW bhp

5 8 100 11 000

6 9 720 13 200

7 11 340 15 400

8 12 960 17 600


Load 100% 171 126

Main data RTA58T





Speed at R1 103 rpm

Power at R1

Cylinders kW bhp

5 10 000 13 600

6 12 000 16 320

7 14 000 19 040

8 16 000 21 760


Load 100% 170 125

Main data RT-flex60C





Speed at R1 114 rpm

Power at R1

Cylinders kW bhp

5 11 800 16 050

6 14 160 19 260

7 16 520 22 470

8 18 880 25 680

9 21 240 28 890


Load 100% 170 125

Main data RTA62U





Speed at R1 113 rpm

Power at R1

Cylinders kW bhp

5 11 100 15 100

6 13 320 18 120

7 15 540 21 140

8 17 760 24 160


Load 100% 173 127

RTA AND RT-FLEX SERIES

22

● All dimensions are in millimetres and are not binding.● The engine weight is net in metric tonnes (t), without oil and water, and is

not binding.

All brake specific fuel consumptions (BSFC) are quoted for fuel of lowercalorific value 42.7 M J/kg (10 200 kcal/kg), and for ISO standard referenceconditions (ISO 15550 and 3046).

The BSFC figures for W覿rtsil覿 engines are given with a tolerance of +5%.W覿rtsil覿 RT-flex engines have a lower part-load fuel consumption than the

corresponding W覿rtsil覿 RTA engines.The brake specific fuel consumptions (BSFC) for Mitsubishi UEC engines

(except the UEC5OLSE) are based on ISO standard reference conditions witha tolerance of 3%. BSFC figures under compliance with IMO-NOx (2000)regulation are different from the figures stated in this catalogue depending onengine type, rating point, etc. For definite values, please contact the enginemanufacturer.

The values of power in kilowatts and fuel consumption in g/kWh arethe standard figures, and discrepancies occur between these and thecorresponding brake horsepower (bhp) values owing to the rounding ofnumbers. For definitive values, please contact our local offices.

Total barometric pressure at R1 1.0 barSuction air temperature 25° CRelative humidity 30%Scavenge air cooling water temperature:

- with sea water 25° C- with fresh water 29° C

ISO STANDARD REFERENCE CONDITIONS

FUEL CONSUMPTION

DEFINITIONS AND NOTES FOR LOW-SPEED ENGINES

DIMENSIONS AND WEIGHTS

23

The load-dependent accumulator cylinder lubricating system has proven reliableoperation since its introduction in the 1970s.It is employed as standard on W覿rtsil覿RTA low-speed engines of smaller bore.

To enable lubricating oil feed rates to be reduced the accumulatorsystem has been further developed in recent years.The new PulseLubricating System with electronic control of lubrication timing has beendeveloped.It is available for all W覿rtsil覿 RT-flex low-speed engines and forselected RTA engines.The guide lubricating oil feed rate with the PulseLubricating System is 0.7 -0.8g/kWh.This allows important saving in engineoperating costs.

For further information on this subjece,please consult your nearest W覿rtsil覿company.

CYLINDER LUBRICATION

The engine layout fields for W覿rtsil覿Iow-speed engines are defined by thepower/speed rating points R1, R2, R3and R4 (see diagram left). In certainengines, the layout field is extendedto the points R1+ and R2+. R1, orR1+ instead if applicable, is thenominal maximum continuous rating(MCR).Any power and speed withinthe respective engine layout field maybe selected as the Contract-MCR(CMCR) point for an engine.

RATING POINTS FOR W魧RTSIL魧LOW-SPEED ENGINES

Power

Speed

▲

R3

R4

R2

R1 R1+

R2+

Enginelayout field

Engine-MCR

24

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