# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 5.9: Periodically regenerating systems (K i ) family


Only vehicles that are identical with respect to the following characteristics may be part of the same periodically regenerating systems family:
(a)Type of internal combustion engine: fuel type, combustion process,
(b)Periodically regenerating system (i.e. catalyst, particulate trap);
(i)Construction (i.e. type of enclosure, type of precious metal, type of substrate, cell density);
(ii)Type and working principle;
(iii)Volume ± 10 per cent;
(iv)Location (temperature ± 100 °C at second highest reference speed).
(c)The test mass of each vehicle in the family shall be less than or equal to the test mass of the vehicle used for the K i demonstration test plus 250 kg.
5.9.1....
5.9.2.

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/XXI/division/1/division/5/division/5.9 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-XXI/division-1/division-5/division-5.9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.