# Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery, Division 2.5.2.1

Extent: E+W+S+N.I.

For a dual-fuel engine family where the engines are calibrated for a specific LNG gas composition resulting in a λ-shift factor not differing by more than 3 % from the λ-shift factor of the G 20 fuel specified in Annex IX, and the ethane content of which does not exceed 1,5 %, the parent engine shall only be tested on the G 20 reference gas fuel, or on the equivalent fuel created using an admixture of pipeline gas with other gases, as specified in Appendix 1 of Annex IX.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/I/division/2/division/2.5/division/2.5.2/division/2.5.2.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-I/division-2/division-2.5/division-2.5.2/division-2.5.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.