# 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 7.7.2.2: Denormalization of engine speed

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

The engine speed shall be denormalized using by means of equation (6-15):
n ref = %speed × MTS − n idle 100 + n idle
(6-15)
Where:
n ref is the reference speed
MTS is the maximum test speed
n idle is the idle speed
%speed is the value of NRTC or LSI-NRTC normalized speed taken from Appendix 3 of Annex XVII.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/7/division/7.7/division/7.7.2/division/7.7.2.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-7/division-7.7/division-7.7.2/division-7.7.2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.