{
  "url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-Xa/division-7/division-7.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-Xa/division-7/division-7.2.json",
  "legislation": "eur/2017/2400",
  "legislation_title": "Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-2400",
  "path": "annex/Xa/division/7/division/7.2",
  "kind": "division",
  "number": "7.2",
  "heading": "Calculation of the measured fuel consumption",
  "text": "The measured fuel flow shall be integrated for the same time span as the simulated fuel consumption. The measured fuel consumption for the total test shall be calculated as follows:\nFC m = ∑ end t = 0 FC m t : fs VT work m\nwhere:\nFC m Fuel consumption measured by integrating fuel mass flow over the complete fuel consumption measurement phase [g/kWh]\nFC m(t) Instantaneous fuel mass flow measured during the fuel consumption measurement phase [g/s]\nfs Sampling rate [Hz]\nVT work m Verification test work at the wheel calculated from the measured wheel torque and wheel rotational speeds over the complete fuel consumption measurement phase [kWh]\nVT work m = ∑ t = 0 end ∑ 2 i = 1 P wheel-i-measured,t 3600 × fs\nP wheel-i-measured,t Positive power at the left (i = l) and right (i = 2) wheel calculated from the measured wheel torque and wheel rotational speeds at time step t where only power values greater zero are considered\nP wheel-i-measured,t = 0,001 × torque i × rpm i × 2 × π 60\nTorque i instantaneously measured torque at the wheel ‘ i ’ in time step ‘ t ’ [Nm]\nrpm i instantaneously measured rotational speed at the wheel ‘i’ in time step ‘t’ [min – 1 ]\nThe measured fuel consumption values shall be corrected for the net calorific value (NCV) as set out in point 3 of Annex V to calculate the verification test results.\nFC m,corr = FC m × NCV meas NCV std\nwhere:\nNCV meas NCV of the fuel used in the verification test determined in accordance with point 3.2 of Annex V [MJ/kg]\nNCV std Standard NCV in accordance with Table 4 of Annex V [MJ/kg]\nFC m,corr Fuel consumption measured by integrating fuel mass over the complete fuel consumption measurement phase corrected for the test fuel NCV [g/kWh]",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Regulation (EU) 2019/318 of 19 February 2019 amending Regulation (EU) 2017/2400 and Directive 2007/46/EC of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/2400/annex/Xa/division/7/division/7.2",
    "retrieved_at": "2026-11-01T14:44:20.922900+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."
}