# 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 2.4.2.2: Discrete-mode NRSC

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

The particulate specific emission e PM [g/kWh] shall be calculated by means of equations (7-66) or (7-67):
(a) For the single-filter method
e PM = q m PM ∑ i = 1 N mode P i × WF i
(7-66)
where:
P i engine power for the mode i [kW] calculated by adding to the measured power P meas [kW] the power required to drive auxiliaries P AUX [kW] determined in accordance with equation (6-8) of Annex VI ( P i = P meas + P AUX )
WFi weighting factor for the mode i [-]
qm PM particulate mass flow rate [g/h]
N mode number of modes in applicable discrete-mode NRSC
(b) For the multiple-filter method
e PM = ∑ i = 1 N mode q m PM i × WF i ∑ i = 1 N mode P i × WF i
(7-67)
Where:
P i engine power for the mode i [kW] calculated by adding to the measured power P meas [kW] the power required to drive auxiliaries P AUX [kW] determined in accordance with equation (6-8) of Annex VI ( P i = P meas + P AUX )
WFi weighting factor for the mode i [-]
qm PM i particulate mass flow rate at mode i [g/h]
N mode number of modes in applicable discrete-mode NRSC
For the single-filter method, the effective weighting factor, WF e i , for each mode shall be calculated by means of equation (7-68):
WF e i = m sep i × q m edf – m sep × q m edf i –
(7-68)
Where:
m sep i mass of the diluted exhaust gas sample passed through the particulate sampling filters at mode i [kg]
q m edf – average equivalent diluted exhaust gas mass flow rate [kg/s]
qm edf i equivalent diluted exhaust gas mass flow rate at mode i [kg/s]
m sep mass of the diluted exhaust gas sample passed through the particulate sampling filters [kg]
The value of the effective weighting factors shall be within 0,005 (absolute value) of the weighting factors listed in Appendix 1 of Annex XVII.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VII/division/2/division/2.4/division/2.4.2/division/2.4.2.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.4/division-2.4.2/division-2.4.2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.