# Commission Implementing Regulation (EU) 2017/656 of 19 December 2016 laying down the administrative requirements relating to emission limits and type-approval of internal combustion engines for non-road mobile machinery in accordance with Regulation (EU) 2016/1628 of the European Parliament and of the Council (Text with EEA relevance), Division 2.2.3.1


An engine family may cover more than one power range for the same speed operation within the same engine (sub-)category. Consistent with Article 18(2) of Regulation (EU) 2016/1628, in this case the parent engine (for the purposes of EU type-approval) and all engine types within the same engine family (for the purposes of conformity of production) shall, with respect to the applicable power ranges:
meet the most stringent emissions limit values;
be tested using the test cycles that correspond to the most stringent emissions limit values;
be subject to the earliest applicable dates for EU type-approval and placing on the market set out in Annex III to Regulation (EU) 2016/1628.
In order to maintain, when the engine is installed in the non-road mobile machinery, the principle of Article 18(2) of Regulation (EU) 2016/1628, the instructions for OEMs set out in Annex XIV to Delegated Regulation (EU) 2017/654 shall include the statement that the installation shall not permanently constrain an engine to only deliver power within the power range of a sub-category with a more stringent emissions limit than the sub-category in which the engine is type-approved.

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Source: https://www.legislation.gov.uk/eur/2017/656/attachment/10/division/division/2./division/2.2./division/2.2.3./division/2.2.3.1. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-656/attachment-10/division/division-2./division-2.2./division-2.2.3./division-2.2.3.1.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.