# 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 3.2.5.2

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

The emission values for each pollutant at the start of the service accumulation schedule and at the emission durability period end point that is applicable for the engine under test shall be either:
(a) determined by extrapolation of the regression equation in point 3.2.5.1, when running a service accumulation schedule in accordance with point 3.2.2.1.2.1 or point 3.2.2.1.2.3, or
(b) measured directly, when running a service accumulation schedule in accordance with point 3.2.2.1.2.2.
Where emission values are used for engine families in the same group of engine families or engine-after-treatment family but with different emission durability periods, then the emission values at the emission durability period end point shall be recalculated for each emission durability period by extrapolation or interpolation of the regression equation as determined in point 3.2.5.1.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/III/division/3/division/3.2/division/3.2.5/division/3.2.5.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-III/division-3/division-3.2/division-3.2.5/division-3.2.5.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.