{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.3/division-2.3.1/division-2.3.1.1/division-2.3.1.1.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.3/division-2.3.1/division-2.3.1.1/division-2.3.1.1.2.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/2.3.1/division/2.3.1.1/division/2.3.1.1.2",
  "kind": "division",
  "number": "2.3.1.1.2",
  "heading": "Calculation based on dilution ratio",
  "text": "The particulate emission over the cycle m PM [g] shall be calculated by means of equation (7-44):\nm PM = m f m sep × m edf 1000\n(7-44)\nWhere:\nm f particulate mass sampled over the cycle [mg]\nm sep mass of diluted exhaust gas passing the particulate collection filters [kg]\nm edf mass of equivalent diluted exhaust gas over the cycle [kg]\nThe total mass of equivalent diluted exhaust gas mass over the cycle m edf [kg] shall be determined by means of equation (7-45):\nm edf = 1 f × ∑ i = 1 N q m edf, i\n(7-45)\nWith:\nq m edf, i = q m ew, i × r d, i\n(7-46)\nr d, i = q m dew, i q m dew, i − q m dw, i\n(7-47)\nWhere:\nqm edf, i instantaneous equivalent diluted exhaust gas mass flow rate [kg/s]\nqm ew, i instantaneous exhaust gas mass flow rate on a wet basis [kg/s]\nr d, i instantaneous dilution ratio [-]\nqm dew, i instantaneous diluted exhaust gas mass flow rate on a wet basis [kg/s]\nqm dw,i instantaneous dilution air mass flow rate [kg/s]\nƒ data sampling rate [Hz]\nN number of measurements [-]",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Delegated Regulation (EU) 2018/989 of 18 May 2018 amending and correcting Delegated Regulation (EU) 2017/654 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 (Text with EEA relevance)."
    }
  ],
  "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/2.3.1/division/2.3.1.1/division/2.3.1.1.2",
    "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."
}