{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.3/division-2.3.2/division-2.3.2.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.3/division-2.3.2/division-2.3.2.2.json",
  "legislation": "eur/2017/654",
  "legislation_title": "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",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-654",
  "path": "annex/VII/division/2/division/2.3/division/2.3.2/division/2.3.2.2",
  "kind": "division",
  "number": "2.3.2.2",
  "heading": "Calculation of the particulate mass flow rate",
  "text": "The particulate emission flow rate over the cycle q mPM [g/h] shall be calculated by means of equations (7-53), (7-56), (7-57) or (7-58):\n(a) For the single-filter method\nq m PM = m f m sep × q m edf – × 3600 1000\n(7-53)\nq m edf – = ∑ i = 1 N q m edf i × WF i\n(7-54)\nm sep = ∑ i = 1 N m sep i\n(7-55)\nWhere:\nqm PM particulate mass flow rate [g/h]\nm f particulate mass sampled over the cycle [mg]\nq m edf – average equivalent diluted exhaust gas mass flow rate on wet basis [kg/s]\nqm edf i equivalent diluted exhaust gas mass flow rate on wet basis at mode i [kg/s]\nWFi weighting factor for the mode i [-]\nm sep mass of diluted exhaust gas passing the particulate collection filters [kg]\nm sep i mass of diluted exhaust gas sample passed through the particulate sampling filter at mode i [kg]\nN number of measurements [-]\n(b) For the multiple-filter method\nq m PM i = m f i m sep i × q m edf i × 3600 1000\n(7-56)\nWhere:\nqm PM i particulate mass flow rate for the mode i [g/h]\nm f i particulate sample mass collected at mode i [mg]\nqm edf i equivalent diluted exhaust gas mass flow rate on wet basis at mode i [kg/s]\nm sep i mass of diluted exhaust gas sample passed through the particulate sampling filter at mode i [kg]\nThe PM mass is determined over the test cycle by summation of the average values of the individual modes i during the sampling period.\nThe particulate mass flow rate qm PM [g/h] or qm PM i [g/h] may be background corrected as follows:\n(c) For the single-filter method\nq m PM = m f m sep − m f,d m d × ∑ i = 1 N 1 − 1 D i × WF i × q m edf – × 3600 1000\n(7-57)\nWhere:\nqm PM particulate mass flow rate [g/h]\nm f particulate sample mass collected [mg]\nm sep mass of diluted exhaust gas sample passed through the particulate sampling filter [kg]\nm f,d particulate sample mass of the dilution air collected [mg]\nm d mass of the dilution air sample passed through the particulate sampling filters [kg]\nDi dilution factor at mode i [see equation (7-28) of point 2.2.2.2] [-]\nWFi weighting factor for the mode i [-]\nq m edf – average equivalent diluted exhaust gas mass flow rate on wet basis [kg/s]\n(d) For the multiple-filter method\nq m PM i = m f i m sep i − m f,d m d × 1 − 1 D × q m edf i – × 3600 1000\n(7-58)\nWhere:\nqm PM i particulate mass flow rate at mode i [g/h]\nm f i particulate sample mass collected at mode i [mg]\nm sep i mass of diluted exhaust gas sample passed through the particulate sampling filter at mode i [kg]\nm f,d particulate sample mass of the dilution air collected [mg]\nm d mass of the dilution air sample passed through the particulate sampling filters [kg]\nD dilution factor [see equation (7-28) of point 2.2.2.2] [-]\nq medf i equivalent diluted exhaust gas mass flow rate on wet basis at mode i [kg/s]\nIf more than one measurement is made, m f,d/m d shall be replaced with m f,d ∕ m d – .",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VII/division/2/division/2.3/division/2.3.2/division/2.3.2.2",
    "retrieved_at": "2026-11-01T14:45:01.864924+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}