Menu

0

€0.00

Wärtsilä 20 Methanol

Wärtsilä 20 Methanol is state-of-the-art engine for auxiliary applications in multi-fuelled container ships, vehicle carriers operating on methanol, conventional LFO, and bio-LFO. These engines are available in 4L, 6L, 8L, 9L cylinder configurations offering a power out range of 0.8 and 1.8 MW at 1000 and 1200 rpm.

Key Features and Benefits

  • Supreme functionality as auxiliary engines in fuel-flexible watercrafts compatible for methanol
  • Up to 90% reduction in CO2 emissions, minimized sulphur particulate releases
  • Efficient performance with a wide range of liquid fuels including biofuels 
  • Available in retrofit units engineered with decarbonization technology
  • Integrated MethanolPac fuel supply system

 

Emission Standards Compliance 

IMO Tier II / Tier III compliant with Wärtsilä NOx Reducer (NOR) 

 

Engine Specifications 

 

Max. cylinder output (kW)

200

Cylinder configurations

4L, 6L, 8L, 9L

Bore (mm)

200

Stroke (mm)

280

Nominal speed (rpm)

1 000 / 1 200

Speed mode

Constant

Wärtsilä 31 Methanol

Wärtsilä 31 Methanol has a proven track record of performance, reliability, and efficiency for methanol fuelled vessels. The engine features supreme operational and fuel flexibility while minimizing noise and waste emissions. The configuration supports diverse applications deployed in ferries, luxury leisure cruise ships, etc. 

 

Wärtsilä 31 Methanol engine is available in 8V, 10V, 12V, 14V, 16V cylinder configurations. These engines offer the power output range 4.7 and 9.8 MW at 720 and 750 rpm.

Key Features and Benefits

  • Supreme functionality as auxiliary engines in fuel-flexible watercrafts compatible for methanol
  • Up to 90% reduction in CO2 emissions, minimized sulphur particulate releases
  • Efficient performance with a wide range of liquid fuels including biofuels 
  • Available in retrofit units engineered with decarbonization technology
  • Integrated MethanolPac fuel supply system
  •  

Emission Standards Compliance 

IMO Tier II / Tier III compliant with Wärtsilä NOx Reducer (NOR) 

 

Engine Specifications 

 

Max. cylinder output (kW)

590 / 610

Cylinder configurations

8V, 10V, 12V, 14V, 16V

Bore (mm)

310

Stroke (mm)

430

Nominal speed (rpm)

720 / 750

Speed mode

Constant/Variable

Wärtsilä 32 Methanol

The introduction of Wärtsilä 32 Methanol engine and Wärtsilä MethanolPac storage and supply system in 2022 offered the first ever methanol-fuelled powering solution to the marine industry. These engines feature 3.4 and 5.2 MW power output range at 720 and 750 rpm.

 

Wärtsilä 32 Methanol engines can operate seamlessly on methanol alongside HFO, MDO and liquid biofuels. The product has acquired certification of approval from all leading classification societies. The engine models are available in configurations for new installation and retrofitting.

Key Features and Benefits

  • Supreme functionality as auxiliary engines in fuel-flexible watercrafts compatible for methanol
  • Up to 90% reduction in CO2 emissions, minimized sulphur particulate releases
  • Efficient performance with a wide range of liquid fuels including biofuels 
  • Available in retrofit units engineered with decarbonization technology
  • Integrated MethanolPac fuel supply system

 

Emission Standards Compliance 

IMO Tier II / Tier III compliant with Wärtsilä NOx Reducer (NOR) 

 

Engine Specifications 

 

Mean effective pressure 

28.9 bar

Max. cylinder output (kW)

560 / 580

Cylinder configurations

6L, 7L, 8L, 9L

Cylinder Bore (mm)

320

Piston Stroke (mm)

400

Nominal speed (rpm)

720 / 750

Speed mode

Constant/Variable

 

Engine Rated Power 

 

Engine type 

Power Rating in Kw

6L32 

3 480

7L32  

4 060

8L32

4 640 

9L32 

5 220

 

Engine Dimensions (mm) and weights (tonnes)

 

Engine type 

A* mm

A mm

B* mm

B mm

C mm

D mm

F mm

Weight tonnes

6L32  

5 570  

5 130

2 432

2 295

2 380

2 345

1 155

35

7L32 

N/A

5 745

N/A

2 330

2 380

2 345

1 155

38

8L32 

6 400  

6 379

2 457

2 375

2 610

2 345

1 155

44

9L32 

6 885  

6 869

2 455

2 375

2 610

2 345

1 155

49



Wärtsilä 46F Methanol

Wärtsilä 46F Methanol engine is a reliable powering solution for heavy-duty applications in large cruise ships and merchant vessels. The four-stroke technology engine operates on sustainable fuels.  It is proven track record of minimising vibrations, noise, and greenhouse gas emissions. 

 

The mechanism supports decarbonisation and multi-fuel functionality allowing supreme flexibility to choose between methanol and conventional fuels. Wärtsilä 46F Methanol engines are available in both inline and V cylinder configurations. These engines offer the power output range of 7.5 and 20 MW at 600 rpm.

Key Features and Benefits

  • Supreme functionality as auxiliary engines in fuel-flexible watercrafts compatible for methanol
  • Up to 90% reduction in CO2 emissions, minimized sulphur particulate releases
  • Efficient performance with a wide range of liquid fuels including biofuels 
  • Available in retrofit units engineered with decarbonization technology
  • Integrated MethanolPac fuel supply system

 

Emission Standards Compliance 

IMO Tier II / Tier III compliant with Wärtsilä NOx Reducer (NOR) 

 

Engine Specifications 

 

Max. cylinder output (kW)

1 250

Cylinder configurations

6L, 7L, 8L, 9L, 12V, 14V, 16V

Bore (mm)

460

Stroke (mm)

580

Nominal speed (rpm)

600

Speed mode

Constant/Variable



Wärtsilä 46TS Methanol

The Wärtsilä 46TS Methanol engine boasts futuristic two-stage turbocharging system. It is a revolutionary product of Wärtsilä’s large bore methanol engines portfolio, designed to unrivalled levels of performance, efficiency, and power density. Wärtsilä 46TS Methanol is available in both inline and V cylinder configurations. These engines deliver an incredible power output range of 8.1 and 21.6 MW at 600 rpm.

Key Features and Benefits

  • Supreme functionality as auxiliary engines in fuel-flexible watercrafts compatible for methanol
  • Up to 90% reduction in CO2 emissions, minimized sulphur particulate releases
  • Efficient performance with a wide range of liquid fuels including biofuels 
  • Available in retrofit units engineered with decarbonization technology
  • Integrated MethanolPac fuel supply system

 

Emission Standards Compliance 

IMO Tier II / Tier III compliant with Wärtsilä NOx Reducer (NOR) 

 

Engine Specifications 

 

Max. cylinder output (kW)

1 350

Cylinder configurations

6L, 7L, 8L, 9L, 12V, 14V, 16V

Bore (mm)

460

Stroke (mm)

580

Nominal speed (rpm)

600

Speed mode

Constant/Variable



Wartsila Engine 1 - 20DF Dual Fuel Engine

The Wärtsilä 20DF four-stroke dual-fuel engine can operate on natural gas, marine diesel oil (MDO) or heavy fuel oil (HFO). The engine mechanism facilitates seamless switch across gas to MDO/HFO and vice versa during operation without causing power interruption.

 

The supreme fuel flexible Wärtsilä 20DF is suitable for installation and optimisation for constant speed generator sets in larger vessels. It can also be used as main engine for inducing mechanical and electric propulsion.


Applications: Wärtsilä 20DF is a compact and lightweight model perfectly suited for producing mechanical drive prime mover for small cargo vessels, ferries, or tug boats.

Key Features and Benefits

  • Fuel and application flexible 
  • Proven and reliable dual-fuel technology 
  • Extended time between overhauls 
  • Low sensitivity to varying fuel quality 
  • Low exhaust gas emissions 
  • Low gas feed pressure 
  • Embedded automation system for safe and optimised operation

 

Maritime Environmental Compliance Certifications

The Wärtsilä 20DF features lean burn principle. It features a cylinder containing gas and air mixture (usually more air than required for complete combustion). The lean combustion technology minimizes NOX emissions by reducing the peak temperatures. The configuration offers operation optimization alternatives: 

 

  • IMO Tier III compliant in gas mode (without using secondary gas exhaust purification systems)
  • Dual fuel mechanism optimises SOX and CO2 emissions and regulates smoke-free operation in gas mode.
  • IMO Tier II exhaust emissions regulations compliant in liquid fuel oil mode 
  • Can comply IMO Tier III standards when paired with Wärtsilä NOX Reducer (NOR) exhaust treatment solution

 

Engine Specifications 

 

20DF DUAL FUEL ENGINE

IMO TIER III

Cylinder bore

200 mm

Fuel Oil 

Piston stroke

280 mm

700 cSt/50°C, 7200 sR1/100°F

Cylinder output

160/195 kW/cy

ISO 8217, category ISO-FDMX, DMA and DMB

Speed

1000/1200 rpm

Mean effective pressure

22.0, 22.2 bar

BSEC 8100 kJ/kWh, BSGC 7900 kJ/kWh

Piston speed

9.3, 11.2 m/s

Generator voltage

0.4–13.8 kV

 

Generator efficiency

0.95–0.96

 




Power Ratings 

 

Engine Type 

60Hz

50Hz

195 kW/cyl, 1200 rpm

160 kW/cyl, 1000 rpm

Engine kW

Gen. kW

Engine kW

Gen. kW

6L20DF

1 170

1 123

960

920

8L20DF

1 560

1 498

1 280 

1 230

9L20DF

1 755

1 685

1 440

1 380

 

Genset Dimensions (mm) and Weight (tonnes)

 

Engine type

A* 

E

I*

K

L*

Weight

6L20DF

5 325 

2 070

1 025/1 075

1 800

2 731

16.9

8L20DF

6 030  

2 070

1 075/1 125

1 800

2 781

20.8

9L20DF

6 535 

2 300

1 800

1 800

2 831

23.9

 

Engine Dimensions (mm) and Weight (tonnes)

 

Engine type

A* 

A

B

C

D

F

Weight

6L20DF

3 254   

3 108

1 705

1 690

1 800

624

9.4

8L20DF

3 973  

3 783

1 705

1 824

1 800

624

11.1

9L20DF

4 261  

4 076

1 705

1 824

1 800

624

11.7



Wartsila Engine 2 - Wartsila 25DF

The Wärtsilä 25 medium-speed 4-stroke marine engine model is based on the time-honoured Wärtsilä 31 modular technology platform. These engines are available in 6–9L cylinder configurations, offering 1.7 to 3.4 MW power output range. Wärtsilä 25 engines boast outstanding fuel flexibility and high-end performance, operating on diesel, dual-fuel LNG and ammonia versions.

Key Features

Technical Features and Benefits 

 

  • Common rail fuel injection – This cutting-edge injection system induces high-pressure fuel injection for optimised combustion, allowing fuel-injection settings at all loads for smokeless operation. 
  • Boasts incredible performance on LNG operation (min. MN 70)
  • Variable valve timing – features on-off type inlet and exhaust valve timing (stepless) for optimising the engine for each specific application
  • Fuel gas system – The fuel gas system in Wärtsilä 25DF runs on the same parts used in the successful Wärtsilä 31DF. This ensures validation and chances of procuring OEM spare parts easily. 
  • High quality pressure-balanced gas valves for optimal accuracy
  • The port injection system triggers rapid response for flexibility of operation and dynamic load control. 
  • W25DF facilitates operational accuracy at reduced costs with ammonia and LNG 
  • Two stage turbocharging offers enhanced power output per cylinder while boosting efficiency and reducing harmful emissions. 
  • Advanced combustion technology
  •  

Emission Standards 

IMO Tier III, IMO Tier II w/o SCR

 

Technical Specifications 

 

BSEC*

7560 kJ/kWh (gas mode)

SFOC*

190.6 (diesel mode)

Fuel type

Diesel, LNG

Gas fuel specification

Natural gas, Biogas, min. methane number 70

Fuel specification

ISO 8217, fuel grades ISO-F DMX, DMA, DFA, DMZ, DFZ. Biodiesel (FAME, HVO) 

Fuel oil viscosity (cSt/40ºC)

6

Cylinder bore/Piston stroke 

250 mm / 340 mm

Engine speed

900 / 1000 rpm

Cylinder output

315 / 345 kw/cyl

Piston speed

10.2 / 11.3 m/s

 

Engine Dimensions (mm) and Weight (tons)

 

Engine 

6L25DF 

7L25DF

8L25DF

9L25DF

A

4 980 

5 380

5 780

6 300

B

2 120 

2 120

2 120

2 120

C

990

990

1090

1090

D

2 490

2 490

2 490

2 600

Weight 

23.2 

25.3

27.8

TBA

 

Genset Dimensions (mm) and Weight (tons) 

 

Engine 

6L25DF 

7L25DF

8L25DF

9L25DF

A

7 960

8 620

9 130

9 900

B

2 720 

2 720

2 720

2 720

C

1 360

1 360

1 360

1 360

D

2 490

2 490

2 490

2 600

Weight 

39.6 

44.8

48.8

TBA

Wartsila Engine 3 - Wartsila 31DF

W31DF medium-speed 4-stroke marine engines are available in 8–16-cylinder configurations, offering 4.6MW – 10.4MW power output range operating at variable 720 and 750 rpm. These benchmark engines have emerged as a futuristic solution for ferries, fishing vessels, offshore supply vessels, semi-submersible vessels, ice-going ships, and pleasure crafts. 

 

W31DF, available in pure gas and dual fuel models, offers diverse flexibility catering vivid marine applications. It can be installed as the main propulsion engine in vessels operating on diesel, electric, and hybrid systems. The mechanism also offers settings to run along a propeller curve or at constant a constant speed, can be used as an auxiliary engine.

Key Features

Key Features and Benefits 

 

  • Record-breaking performance and efficiency 
  • Low fuel consumption over a wide operating range
  • Outstanding cylinder power (up to 650 kW/cylinder) 
  • Flexible fuel options – diesel, dual fuel (DF) and pure gas (SG) versions 
  • Compliant with IMO Tier 3 regulations (on gas mode or with an SCR when using diesel fuel)
  • Ultra-low emissions when running on dual fuel engines
  •  

Emission Standards Compliance 

IMO Tier III IMO Tier II in diesel w/o SCR

 

Technical Specifications 

 

BSEC*  

(kJ/kWh) 7350 (gas mode)

SFOC*

(g/kWh) 176.5 (diesel mode)

Gas fuel specification

Natural gas Methane number 74

Fuel specification

Fuel oil. ISO 8217 category ISO-FRMK 700 ISO-FDMA, ISO-F-DMB, ISO-F-DMZ, ULSF

Fuel oil viscosity (cSt/50 °C)

700

Cylinder bore 

310 mm

Piston stroke

430 mm

Engine speed

720 / 750 rpm

Cylinder output

580 / 600 kW/cyl

Mean effective pressure

29.8 / 29.6 bar

Piston speed

10.3 / 10.8 m/s

Additional features

EnviroPac, Smart Heat Recovery, ArcticPac





Engine Dimensions (mm) and Weights (tonnes)

 

Engine Type

A*

B

C

F

Weight 

8V31DF    

6121

6417

3251

3127

1496

57.9

10V31DF    

6761

7057

3251

3127

1496

66.1

12V31DF     

7688

7833

3144

3460

1546

77.8

14V31DF    

8328

8473

3144

3460

1646

85.7

16V31DF     

8968

9113

3144

3460

1646

93.2



Wartsila Engine 4 - Wartsila 34DF

Wärtsilä 34DF medium-speed 4-stroke marine engine offers umpteen marine powering solutions across diverse applications. It performs best on anything from reliable performance as constant speed generator set in main engine to running as an auxiliary engine in the multi-fuel compatible propelling system.

 

W35DF has emerged as key support for main marine engines in offshore support vessels, tugs, small LNG carriers, and more. The dual fuel mode allows vessels to operate seamlessly on conventional liquid marine fuels such as LFO, HFO, biofuel or LNG. These engines are available in varying cylinder configurations from 6 – 16 cylinders, offering an output of up to 500kW per cylinder (when in use as main engine). These engines run at variable 720 and 750 rpm speeds when used as genset for auxiliary applications.

Key Features

Key Features and Benefits

 

  • Fully fuel-flexible functionality – operates on LNG, HFO, and biofuel 
  • Optional fuel sharing (up to 100% operation on gas mode)
  • High efficiency and optimised power output for auxiliary applications 
  • Reliable and safe advanced combustion control and low gas pressure 
  • Ultra-low emissions with optional greenhouse gas (GHG) reduction package

 

Emission Standards Compliance 

IMO Tier III or EPA T3

ISO 8217, category ISO-F-DMX, DMA and DMB

 

Technical Specifications – Main Engine 

 

Cylinder bore 

340 mm

Piston stroke

400 mm

Cylinder output

480, 500 kW/cyl

Speed

720, 750 rpm

Mean effective pressure

20.0 bar

Piston speed

9.6, 10.0 m/s

Generator efficiency

0.95–0.97

Fuel Specifications 

Fuel oil

BSEC 

7590 kj/kWh

 

Engine Type 

60 Hz 

50 Hz

480 kW/cyl, 720 rpm

500 kW/cyl, 750 rpm

6L34DF           

2880

3000

8L34DF

3840

4000

9L34DF

4320

4500

12V34DF

5760

6000

16V34DF

7680

8000

 

Engine Dimensions (mm) and Weights (tonnes)

 

Engine type       

A

B

C

D

F

Weight

6L34DF

5352

2423

2389

2345

1153

35

8L34DF

6305 

2423 

2555 

2345 

1153 

45

9L34DF 

6796 

2423 

2609 

2345 

1153 

49

12V34DF   

6780

2465

2900

2120 

1210 

61

16V34DF 

7900 

2465 

2900 

2120 

1210 

77

 

Technical Specifications – Auxiliary Applications 

 

Cylinder bore 

340 mm

Piston stroke

400 mm

Cylinder output

480, 500, 520 kW/cyl

Speed

720, 750 rpm

Mean effective pressure

22.0 bar (standard version), 23.9 bar (power-up version)

Piston speed

9.6, 10.0 m/s

Generator voltage

0.4–13.8 kV

Generator efficiency 

0.95–0.97

Fuel Specifications 

Fuel oil

BSEC 

7464 kJ/kWh (standard version), 7616 kJ/kWh (power-up version)

 

Auxiliary Engine – Power Ratings 

 

Engine Type 

60 Hz 

50 Hz  

60 Hz (power-up version)

50 Hz (power-up version)

480 kW/cyl, 720 rpm 

500 kW/cyl, 750 rpm

520 kW/cyl, 720 rpm

520 kW/cyl, 750 rpm

6L34DF

2880 

3000 

3120 

3120

8L34DF

3840 

4000 

4160 

4160

9L34DF 

4320 

4500 

4680 

4680

12V34DF   

5760 

6000

N/A

N/A

16V34DF

7680 

8000

N/A

N/A

 

Genset Dimensions (mm) and Weights (tonnes)

 

Engine type       

A* 

E*

I*

K

L*

Weight

6L34DF

9100 

2720 

1450 

2345 

3873 

60

8L34DF

10200 

2720 

1630 

2345 

4053 

75

9L34DF 

10800 

2920 

1630 

2345 

4053 

80

12V34DF   

10500 

3390 

1700 

2120 

4165 

100

16V34DF 

11500 

3390 

1850 

2120 

4315 

125



Wartsila Engine 5 - Wartsila 46DF

The Wärtsilä 46DF four-stroke dual-fuel engine is an excellent powering solution widely used in LNG Carriers, Cruise ships, RO-RO/PAX, Ferries, and Large Offshore Units. The engine model operates and switches seamlessly on heavy fuel oil (HFO), marine diesel oil (MDO) and natural gas. 

 

This advanced module is based on the Wärtsilä 46F and Wärtsilä 50DF (both recognized for proven track record and power performance). Hence, availing spare parts for W46DF is easy and cost-effective than overall replacement. The Wärtsilä 46DF offers power range from 6.8 MW to 18.3 MW when running at 600 rpm.

 

The compact design, fuel flexibility, and effortless switching across fuel modes makes it a perfect solution for a wide range of marine applications. From optimized constant speed diesel electric operation to direct drive main engine propulsion, the engine serves diverse needs in the heavy-duty vessels. 

Key Features

Key Features and Benefits 

 

  • Lowest gas fuel and fuel oil consumption in the marine industry 
  • Most robust 4-stroke gas engine on the market 
  • Proven fuel flexibility and dual-fuel technology 
  • Long overhaul intervals 
  • Low gas feed pressure and exhaust gas emissions  
  • Embedded automation system 
  •  

Emission Standards Compliance  

IMO Tier III Compliant

 

Technical Specifications 

 

Cylinder bore 

460 mm 

Piston stroke 

580 mm

Cylinder output 

1145 kW/cyl

Speed 

600 rpm

Mean effective pressure 

23.8 bar

Piston speed 

11.6 m/s

Fuel specification

Fuel oil

BSEC 

7530 kJ/kWh @85%MCR

BSGC 

7485 kJ/kWh @85%MCR

 

Engine Rated Power 

 

Engine type 

Power Ratings in kW

6L46DF 

6 870

7L46DF 

8 015

8L46DF 

9 160

9L46DF 

10 305

12V46DF 

13 740

14V46DF 

16 030

16V46DF 

18 320

 

Engine Dimensions (mm) and Weights (tonnes)

 

Engine type       

A

A*

B

C

F

Weight

6L46DF

8 953               

8 670

3 255

3 185

1 430

102

7L46DF

9 773

9 635

3 255

3 185

1 430

118

8L46DF

10 590

10 310

3 445

3 185

1 430

130

9L46DF 

11 413

11 130

3 445

3 185

1 430

146

12V46DF   

10 350

11 120

3 670

4 555

1 620

184

14V46DF

11 400

12 170

3 670

4 555

1 620

223

16V46DF 

12 700 

13 450

3 860

5 174

1 620

235



Wartsila Engine 6 - Wartsila 46TS-DF

The Wärtsilä 46TS-DF is the revolutionary medium-speed engine engineered for best-in-class fuel economy, emissions performance, and unbeatable fuel flexibility.

 

This engine is the ideal solution to cut fuel costs and emissions. 

 

The Wärtsilä 46TS-DF addresses a broad range of marine applications and vessel types.

 

It can be configured as the main propulsion engine in diesel-electric, mechanical, and hybrid installations. The engine can be optimised to run at constant speed or along a propeller curve. It offers the best solution cruise and ferry operators to minimise fuel costs while maximising sustainable performance. Wärtsilä 46TS can be configured as a main engine for onboard medium in merchant vessels, massive gas tankers, bulk carriers, container vessels, dredgers, etc.

Key Features

Key Features and Benefits 

 

  • High power density (1,300 kW / cylinder) 
  • Proven and reliable dual-fuel technology 
  • Low operational expenses thanks to improved efficiency and heat recovery 
  • Reduced maintenance thanks to 10% fewer cylinders
  • High-performance two-stage turbocharging and fuel injection

 

Emission Standard Compliance 

IMO Tier III compliant in gas and diesel modes when combined with SCR 

 

Engine Specifications 

 

Cylinder bore 

460 mm

Piston stroke 

580 mm (700 cSt/50°C) (7200sR1/100°F)

Cylinder output 

1300 kW/cy

Speed 

600 rpm

Mean effective pressure 

27 bar

Piston speed 

11.6 m/s

Fuel specification

Fuel oil (ISO 8217, category ISO-F-DMX. DMA. DMB Natural Gas)

Engine efficiency 

up to 52%

 

Engine Rated Power 

 

Engine type 

Power Ratings in kW

6L46TS 

7800

7L46TS 

9100

8L46TS 

10400

9L46TS 

11700

12V46TS 

15600

14V46TS 

18200

16V46TS 

20800



Dimensions (mm) and Weights (tonnes)

 

Engine type 

A mm

A* mm

B* mm

F mm

C mm

Weight t

Wartsila 6L46TS    

9093

9798

4237

1365

3754

117

Wartsila 7L46TS     

9913

10618

4237

1365

3754

129

Wartsila 8L46TS     

10615

11427

4355

1365

3935

142

Wartsila 9L46TS   

11475

11550

4355

1365

3935

155

Wartsila 12V46TS   

11066

3903

1505

5060

196

Wartsila 14V46TS 

12116     

3903

1505

5060

218

Wartsila 16V46TS 

13456 

4363 

1505 

5733

252