Wärtsilä 20 is a compact, lightweight marine engine. It offers fuel flexibility and reliable performance in genset and main engine applications. It is available in diesel and dual-fuel versions, and the dual-fuel version will switch between different fuels during operation smoothly, without power interruption.
Wärtsilä 20 offers outstanding flexibility, which makes it a great choice for generating sets in larger vessels and as a main engine for both mechanical and electric propulsion. The dual-fuel version is a great choice for many vessel types, including hybrid installations.
Ideal applications for the Wärtsilä 20 engine include:
The Wärtsilä 20 has proven its robustness and reliability with over 7500 engines delivered since its introduction to the market in the early 1990s. The engine can switch from MDO to HFO and vice versa without power interruption at any engine operation load.
The engine is available in cylinder configurations 4L, 6L, 8L, 9L with the power output ranging between 740 and 1980 kW at 900, 1000 and 1200 rpm.
The Wärtsilä 20DF is based on the well proven and reliable Wärtsilä 20 diesel engine introduced in the early 1990s. Because of its fuel flexibility, the Wärtsilä 20DF can be optimized for constant speed generating sets, as well as variable speed mechanical drives, for main engine applications.
The engine is available in cylinder configurations 6L, 8L, 9L with the power output ranging between 870 and 1755 kW at 900, 1000 and 1200 rpm.
Get technical data and system proposals for designing marine engine installations with the Wärtsilä 20 and Wärtsilä 20DF.
The Wärtsilä 20 can operate on conventional liquid marine fuels (LFO, HFO or liquid biofuels) or LNG. Fuel switching takes place without loss of power or speed.
For vessel operators, a fuel-flexible engine means that it is possible to comply with the ever-tightening emission regulations. At the same time, operators will have the option to choose fuel according to cost and availability.
Adopting LNG as fuel can help you reduce greenhouse gas emissions significantly. To maximise the environmental benefits of LNG, it is important to minimise methane slip – the unburned methane that escapes into the atmosphere when LNG is burned as fuel.
Wärtsilä 20DF is a great choice because it cuts methane slip in two ways. Its combustion chambers are designed to reduce methane slip, and its combustion controls have been optimised.
Discover the benefits that others have gained from choosing Wärtsilä 20 marine engines.
The MS Helgoland ferry entered a new era of dual-fuel operations with the complete Wärtsilä LNG propulsion solution, featuring two Wärtsilä 20 engines. Watch the video to learn how they adopted a new fuel.
Technology group Wärtsilä will supply replacement engines for two inland waterway tug pusher vessels operating in Paraguayan rivers. The vessels are owned by ADM Naviera Chaco (ADM). The vessel modifications and new engine installations will be carried out in Asuncion-Paraguay. The orders were booked by Wärtsilä in Q2 and Q4 2024.
The new engines will enable a reduction of the environmental impact and increase the efficiency of the tug pushers. ADM’s stated target is to reduce emissions by 25 percent by 2035, and the advanced Wärtsilä engine technology is an important opportunity to advance that effort in South America.
“The Wärtsilä engines selected for this project have the fuel flexibility that we seek, especially as we look to the potential of alternative future fuels. At the same time, the project will help us to improve operational reliability and lower our maintenance costs,” says Raul Valdez, Logistic Director – ADM NAVIERA CHACO S.R.L.
The two vessels covered by this contract are the Decatur Lady and the Tendota. Each will be refitted with three Wärtsilä 20 engines. Delivery of the engines to the shipyard took place earlier this year. The Wärtsilä 20 is a well-proven compact, lightweight marine engine, offering fuel flexibility and reliable performance in genset and main engine applications.
“We are delighted that Wärtsilä engines have been selected for this important project, which highlights the marine industry’s shift to greater sustainability and increased efficiency. ADM’s vision to be the provider of choice to meet the demand for low-carbon intensity feedstocks is very much in line with Wärtsilä’s own commitment to supporting the industry’s decarbonisation efforts,” comments Hanno Schoonman, Director of Sales for AMER region - Wärtsilä Marine.
ADM is a global leader in innovative solutions from nature, with a transportation and logistics network that includes 2,500 barges and more than 160 boats.
Contact for more information on this release:
Media contact for more information on this release:
Isabella Alder
Positioning and Strategic Communications Manager, Wärtsilä Marine
Tel: +44 (0) 7792 681 757
marine.media@wartsila.com
Image caption: Wärtsilä will supply replacement engines for two inland waterway tug pusher vessels operating in Paraguayan rivers – the Decatur Lady (pictured) and the Tendota. © ADM Naviera Chaco
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Wärtsilä Marine in brief
Wärtsilä Marine is a global pioneer in power, propulsion and lifecycle solutions for the marine market. We develop industry-leading technologies, advancing maritime's transition to new fuels. We support building an end-to-end digital ecosystem where all vessels and ports are connected. Ultimately, Wärtsilä Marine is driving the shipping industry forward on its journey towards a decarbonised and sustainable future through our broad portfolio of engines, propulsion systems, hybrid technology, exhaust treatment, shaft line solutions and digital technologies, as well as integrated powertrain systems. Our offering, which is underpinned by our performance-based agreements, upgrades, lifecycle solutions, decarbonisation services, as well as an unrivalled global network of maritime expertise, delivers the efficiency, reliability, safety, and environmental performance needed to support a safe and sustainable future for our customers, our communities and our planet.
www.wartsila.com/marine
Wärtsilä in brief
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. We emphasise innovation in sustainable technology and services to help our customers continuously improve their environmental and economic performance. Our dedicated and passionate team of 18,300 professionals in more than 230 locations in 77 countries is shaping the decarbonisation of our industries across the globe. In 2024, Wärtsilä’s net sales totalled EUR 6.4 billion. Wärtsilä is listed on Nasdaq Helsinki.
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