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    Wärtsilä generating sets - Tailored to optimize performance

    A wide range of generating sets, comprising generator and engine mounted on a common baseframe, are available for both service power generation and for diesel-electric propulsion.

    Wärtsilä genset 20

    All generating sets are designed for operating on standard marine fuel oils. The generating sets are resiliently mounted and the generator voltage can be selected. Larger diesel generators are delivered for separate mounting of the diesel engine and generator.

    Access Marine 3D models & drawings

      20DF Genset

      Wärtsilä 20DF generating setIMO Tier III
      Cylinder bore200 mmGenerator voltage0.4 - 13.8 kV
      Piston stroke280 mmGenerator efficiency0.95 - 0.96
      Cylinder output160, 185 kW/cylFuel specification:Fuel oil
      Speed1000, 1200 rpm700 cSt/50°C 
      Mean effective pressure22.0, 21.0 barISO 8217, category ISO-F-DMX, DMA  & DMB
      Piston speed9.3, 11.2 m/sBSEC 8390 kJ/kWh at ISO cond.
      BSGC 8220 kJ/kWh at ISO cond.
      20DF, Rated power
       60 Hz50 Hz
      Engine type195 kW/cyl, 1200 rpm160 kW/cyl, 1000 rpm
      Eng. kWGen. kWEng. kWGen. kW
      6L20DF11701123960920
      8L20DF1560149812801230
      9L20DF1755168514401380

      Genset-20DF
      Dimensions (mm) and weights (tonnes)
      Engine typeA*E*I*KL*Weight*
      6L20DF532520708951800273116.7
      975
      1025
      8L20DF6030207010251800279120.8
      1075
      9L20DF6535230010751800283123.7
      1125
      * Dependent on generator type and size. 

      31DF Genset

      Wärtsilä 31DF generating set
      		 IMO Tier III
      Cylinder bore310 mmFuel specification: Fuel Oil
      Piston stroke430 mm700 cSt/50°C
      Cylinder output580, 600 kW/cylISO 8217, category ISO-F-RMK 700
      Speed720, 750 rpm
      Mean effective pressure29.8, 29.6 barBSEC 7350 kJ/kWh at ISO conditions
      Piston speed10.3, 10.75 m/s
       Generator voltage 0.4-13,8 kV 
       Generator efficiency 0.95-0.97 
       31DF, Rated power
      Engine type
      		60 Hz50 Hz
      580 kW/cyl, 720 rpm600 kW/cyl, 750 rpm
      Eng. kWGen. kWEng. kWGen. kW
      8V31DF4 6404 4504 8004 610
      10V31DF5 8005 5706 0005 760
      12V31DF6 9606 6807 2006 910
      14V31DF8 1207 7908 4008 060
      16V31DF9 2808 9109 6009 220
      Wärtsilä 31 Genset dimensions
      31 DF genset, dimensions (mm) and weights (tonnes)
      Engine typeA*E*I* K* L*Weight 
      8V31DF9 4993 5941 7502 4005 00197.7
      10V31DF10 1673 5941 7502 4005 001109.7
      12V31DF11 6803 5941 8002 4004 944125.3
      14V31DF12 2043 5941 9002 4005 044142.1
      16V31DF12 8763 594 1 9002 4005 044155.2

      34DF Genset

      Wärtsilä 34DF generating setIMO Tier III, EPA T3
      Cylinder bore340 mmGenerator voltage0.4 - 13.8 kV
      Piston stroke400 mmGenerator efficiency0.95 - 0.97
      Cylinder output480, 500 kW/cylFuel specification:Fuel oil
      Speed720, 750 rpm700 cSt/50°C 
      Mean effective pressure22.0, barISO 8217, category ISO-F-DMX, DMA & DMB
      Piston speed9.6, 10.0 m/sBSEC 7590 kJ/kWh at ISO cond.
      BSGC 7490 kJ/kWh at ISO cond.
      34DF, Rated power
      60 Hz 50 Hz
      Engine type 480 kW/cyl, 720 rpm 500 kW/cyl, 750 rpm
      Eng. kW Gen. kW Eng. kW Gen. kW
      6L34DF 2880 2770 3000 2890
      8L34DF 3840 3490 4000 3840
      9L34DF 4320 4150 4500 4320
      12V34DF 5760 5530 6000 5770
      16V34DF 7680 7370 8000 7680

      34DF Genset Dimensions
      34DF, Dimensions (mm) and weights (tonnes)
      Engine type A* E* I* K L* Weight*
      6L34DF 8700 2290 1450 2345 4000 57
      8L34DF 10410 2690 1630 2345 4180 76
      9L34DF 10475 2890 1630 2345 4180 87
      12V34DF 10075 3060 1700 2120 4365 96
      16V34DF 11175 3060 1850 2120 4515 121
      * Dependent on generator type and size.
      Generator output based on a generator efficiency of 96%.

      14 Genset

      Available only in select regions.

      Wärtsilä 14 generating set
      		 IMO Tier II or III
      Cylinder bore 135 mm Generator voltage 0.4 - 0.69 kV
      Piston stroke 157 mm Generator efficiency 0.95 - 0.96
      Speed 1500, 1800rpm Fuel specification Light fuel oil, maximum sulphur content 0.5%
          ISO 8217, category ISO-F-DMX, DMA, DMZ
          SFOC 205,0 g/kWh at ISO condition
      Genset 14, Rated power, 60 Hz
      Engine type Eng. kW Gen. kW Eng. kW Gen. kW Eng. kW Gen. kW
      12V14 710 675 790 750 910 865
      16V14 945 900 1055 1000 1215 1155
      Genset 14, Rated power, 50 Hz
      Engine type Eng. kW Gen. kW Eng. kW Gen. kW
      12V14 710 675 790 750
      16V14 945 900 1055 1000
      Genset 14, Dimensions (mm) and weights (tonnes)
      Engine type Length* Width* Height* Weight*
      12V14 3800 1480 1600 5,5
      16V14 4600 1540 1600 7,5
      *Dependent on generator type and size.

      20 Genset

      Wärtsilä 20 generating set
      		IMO Tier II or III
      Cylinder bore200 mmGenerator voltage0.4 - 13.8 kV
      Piston stroke280 mmGenerator efficiency0.95 - 0.96
      Cylinder output185, 200 kW/cylFuel specificationFuel oil
      Speed900, 1000rpm700 cSt/50°C
      Mean effective pressure27.3, 28.0barISO 8217, category ISO-F-RMK 700
      Piston speed8.4, 9.3m/sSFOC 190,3 g/kWh at ISO condition
      Genset 20, Rated power
      60 Hz 50 Hz
      Engine type 185 kW/cyl, 900 rpm 220 kW/cyl, 1200 rpm 200 kW/cyl, 1000 rpm
      Eng. kW Gen. kW  Eng. kW Gen. kW  Eng. kW Gen. kW
      4L20 740 700 -   - 800 760
      6L20 1110 1055 1320  1255  1200 1140
      8L20 1480 1405 1760 1670  1600 1520
      9L20 1665 1580 1980  1880 1800 1710
      20-genset-dimensions
      Genset 20, Dimensions (mm) and weights (tonnes)
      Engine type A* E* I* K L* Weight*
      4L20 4910 1770
      1920      		 990 1800 2338 14.0
      6L20 5325 1770
      1920
      2070      		 895
      975
      1025      		 1800 2243
      2323
      2373      		 16.8
      8L20 6030 1920
      2070      		 1025
      1075      		 1800 2474
      2524      		 20.7
      9L20 6535 2070
      2300      		 1075
      1125      		 1800 2524
      2574      		 23.8
      * Dependent on generator type and size.

      26 Genset

      Wärtsilä 26 generating setIMO Tier II or III
      Cylinder bore260 mmGenerator voltage0.4 - 13.8 kV
      Piston stroke320 mmGenerator efficiency0.95 - 0.96
      Cylinder output325, 340 kW/cylFuel specification:Fuel oil
      Speed900, 1000rpm700 cSt/50°C 
      Mean effective pressure23.0, 25.5 barISO 8217, category ISO-F-RMK 700
      Piston speed9.6, 10.7m/sSFOC 185,8 g/kWh at ISO condition
      Genset 26, Rated power
      60 Hz 50 Hz
      Engine type 325 kW/cyl, 900 rpm 340 kW/cyl, 1000 rpm
      Eng. kW Gen. kW Eng. kW Gen. kW
      6L26 1 950 1 870 2 040 1 960
      8L26 2 600 2 495 2 720 2 610
      9L26 2 925 2 810 3 060 2 940
      12V26 3 900 3 745 4 080 3 915
      16V26 5 200 4 990 5 440 5 220

      Genset 20 dimensions
      Genset 26, Dimensions (mm) and weights (tonnes)
      Engine type A* E* I* K L* Weight*
      6L26 7 500 2 300 1 200 2 430 3 033 35
      8L26 8 000 2 300 1 200 2 430 3 068 45
      9L26 8 500 2 300 1 300 2 430 3 168 50
      12V26 8 400 2 700 1 560 2 765 3 686 60
      16V26 9 700 2 700 1 560 2 765 3 716 70
      * Dependent on generator type and size.

      31 Genset

      Wärtsilä Genset 31IMO Tier II or III
      Cylinder bore310 mmGenerator voltage0.4–13.8 kV
      Piston stroke430 mmGenerator efficiency0.95–0.97
      Cylinder output590, 610 kW/cylFuel specification: Fuel oil
      Speed720, 750 rpm700 cSt/50⁰C 
      Mean effective pressure30.3, 30.1 barISO 8217, category ISO-F-RMK 700
      Piston speed10.3, 10.75 m/sSFOC 167,7 g/kWh at ISO conditions
      Genset 31, Rated power
      Engine type 60 Hz 50 Hz
      590 kW/cyl, 720 rpm 610 kW/cyl, 750 rpm
      Eng. kW Gen. kW Eng. kW Gen. kW
      8V31 4 720 4 530 4 880 4 685
      10V31 5 900 5 665 6 100 5 855
      12V31 7 080 6 800 7 320 7 030
      14V31 8 260 7 930 8 540 8 200
      16V31 9 440 9 060 9 760 9 370
      Wärtsilä 31 Genset dimensions
      Genset 31, Dimensions (mm) and weights (tonnes)
      Engine typeA*E*I*KL*Weight*
      8V319 4993 5941 7502 4005 00197.3
      10V3110 1673 5941 7502 4005 001109.2
      12V3111 6803 5941 8002 4004 944124.7
      14V3112 2043 5941 9002 4005 044141.5
      16V3112 8763 5941 9002 4005 044154.5
      *Dependent on generator type and size.

      32 Genset

      Wärtsilä 32 generating setIMO Tier II or III
      Cylinder bore320 mmGenerator voltage0.4 - 13.8 kV
      Piston stroke400 mmGenerator efficiency0.95 - 0.97
      Cylinder output480, 500 kW/cylFuel specification:Fuel oil
      Speed720, 750 rpm700 cSt/50°C 
      Mean effective pressure24.9, 25.9 barISO 8217, category ISO-F-RMK 700
      Piston speed9.6, 10.0 m/sSFOC 174 g/kWh at ISO condition
      Genset 32, Rated power
      Engine type60Hz/720rpm50 Hz/750 rpm
      560 kW/cyl580 kW/cyl
      Engine kWGen. kWEngine kWGen. kW
      6L323 3603 2303 4803 340
      8L324 4804 3004 6404 450
      9L325 0404 8405 2205 010
      12V326 7206 4506 9606 680
      16V328 9608 6009 2808 910
      Genset 20 dimensions
      Genset 32, Dimensions (mm) and weights (tonnes)
      Engine type A* E* I* K L* Weight*
      6L32 8 345  2 490  1 450  2 345 3 745 57
      7L32  9 391  2 690  1 630  2 345 3 960 69
      8L32 10 410  2 690  1 630  2 345 4 010 76
      9L32 10 505  2 890  1 630  2 345 4 010 86
      12V32 10 700  3 060  1 700  2 120 4 130 100
      16V32 11 465  3 360  1 850  2 120 4 445 127
      * Dependent on generator type and size.

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