Gröna Tåget (English: Green Train) is a research and development programme, the aim of which is to define a concept and develop technology for future high-speed trains for the Nordic European market. The target is a train for Scandinavian interoperability (Denmark, Norway and Sweden), although the pan-European minimum standards must be applied.
Gröna Tåget is a concept for long-distance and fast regional rail services. It should be suitable for specific Nordic conditions with a harsh winter climate as well as mixed passenger and freight operations on non-perfect track.
Gröna Tåget delivers a collection of ideas, proposals and technical solutions for rail operators, infrastructure managers and industry. The programme aims to define a fast, attractive, environmentally friendly and economically efficient high-speed train concept based on passenger valuations and technical possibilities. Proposals do not take corporate policies into account as these may vary between companies and over time.
This is one of the final reports, specifying the functional requirements for the train concept from a technical, environmental and economic perspective, with an emphasis on the areas where research and development have been carried out within the Gröna Tåget programme. It is not a complete specification of a new train, but concentrates on issues that are particularly important for successful use in the Scandinavian market. It should be regarded as a complement to the pan-European standards. Research and development within the Gröna Tåget programme, including analysis and testing activities, are summarized. References are given to reports from the different projects in the programme but also to other relevant work.
Other summary reports deal with market, economy and operational aspects as well as a design for an attractive, efficient and innovative train from a traveller’s point of view.
The main alternative proposed in this concept specification is a train for speeds up to 250 km/h, equipped with carbody tilt for short travel time on existing main-line track. The train is proposed to have high-power permanent magnet motors, low aerodynamic drag and modest adhesion utilization. It has low noise emissions and a track-friendly bogie design. The train should be equipped with active highperformance suspension to produce superior ride qualities on non-perfect track and minimize suspension motions. Due to the approximately 3.30 m interior width of the carbody, one more comfortable seat can be accommodated abreast, which will reduce cost and energy use per seat-km and also maximize the capacity of the train and of the railway system. One most important and critical issue is that the train must be able to run in a Nordic winter climate, where technologies have been tested, proposed and also compiled in a special report.
Most technologies developed can also be used for modified train concepts, such as non-tilting trains, trains for higher speeds than 250 km/h, trains with continental width carbodies, and others. Further, many technologies developed in the programme are also useful for lower speeds. Newly developed technologies were type-tested in a special test train from 2006 to 2009. Endurance tests in commercial service were performed between 2009 and 2011.
KTH Royal Institute of Technology , 2012. , 187 p.