The European Rail Research Institute (ERRI) has recently revised UIC Leaflet 623, Approval of Diesel Engines, into Leaflet 623-2. This is an important step towards the establishment of European standards for diesel exhaust gas emission limits in rail traction applications. The Leaflet will remove the need for additional exhaust gas tests by national approval authorities, if a UIC (International Union of Railways) approval certificate can be obtained for the engine being examined. European Union (EU) Euro 1, Euro 2, and Euro 3 exhaust gas values are hardly relevant for diesel engines used for rail traction, because it is not possible to convert the results obtained by the different methods that they use. In 1992, ERRI published report S1015 P/RP1, which contained proposals for future permissible limits for carbon monoxide (CO), hydrocarbons (HC), and nitrous oxides (NOx) in diesel emissions. These limiting emissions were incorporated in Leaflet 623-2, so that mandatory exhaust gas emission limits could be enforced across national boundaries. In the course of this work, it was found necessary to revise and update Leaflet 623, whose new version was completed in 1996 and came into force on 1 July 1997.

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  • Authors:
    • Paukert, H
  • Publication Date: 1999-3


  • English

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  • Accession Number: 00766933
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 2 1999 12:00AM