# 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 2.1.2: Transient (NRTC and LSI-NRTC) test cycles and RMC tests

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

The total mass per test of a gaseous emission m gas [g/test] shall be calculated by multiplication of the time aligned instantaneous concentrations and exhaust gas flows and integration over the test cycle by means of equation (7-2):
m gas = 1 f × k h × k × u gas × ∑ i = 1 N q m ew, i × c gas, i
(7-2)
where:
ƒ data sampling rate [Hz]
k h NOx correction factor [-], only to be applied for the NOx emission calculation
k 1 for cgasr,w,i in [ppm] and k = 10 000 for cgasr,w, i in [% vol]
u gas component specific factor [-] (see point 2.1.5)
N number of measurements [-]
qm ew, i instantaneous exhaust gas mass flow rate on a wet basis [kg/s]
c gas, i instantaneous emission concentration in the raw exhaust gas, on a wet basis [ppm] or [% vol]

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VII/division/2/division/2.1/division/2.1.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.1/division-2.1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.