{
  "url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-VI/division-3/division-3.1",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-VI/division-3/division-3.1.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/VI/division/3/division/3.1",
  "kind": "division",
  "number": "3.1",
  "heading": null,
  "text": "Option 1: Measurement of the torque independent losses, calculation of the torque dependent losses.\nThe torque loss Tl ,in on the input shaft of the transmission shall be calculated by\nTl,in (nin , Tin , gear) = T l,in,min_loss + fT * Tin + floss_corr * Tin + T l,in,min_el + fel_corr * Tin\nThe correction factor for the torque dependent hydraulic torque losses shall be calculated by\nfloss_corr=Tl,in,max_loss−Tl,in,min_lossTmax,inThe correction factor for the torque dependent electric torque losses shall be calculated by\nfel_corr=Tl,in,max_el−Tl,in,min_elTmax,inThe torque loss at the input shaft of the transmission caused by the power consumption of transmission electric auxiliary shall be calculated by\nTl,in,el=Pel0,7×nin×2π60where:\nTl,in Torque loss related to input shaft [Nm]\nTl,in,min_loss Torque independent loss at minimum hydraulic loss level (minimum main pressure, cooling/lubrication flows etc.), measured with free rotating output shaft from testing without load [Nm]\nTl,in,max_loss Torque independent loss at maximum hydraulic loss level (maximum main pressure, cooling/lubrication flows etc.), measured with free rotating output shaft from testing without load [Nm]\nfloss_corr Loss correction for hydraulic loss level depending on input torque [-]\nnin Speed at the transmission input shaft (downstream of torque converter, if applicable) [rpm]\nfT Torque loss coefficient = 1 – ηT\nTin Torque at the input shaft [Nm]\nηT Torque dependent efficiency (to be calculated); for a direct gear fT = 0,007 (ηT = 0,993) [-]\nfel_corr Loss correction for electric power loss level depending on input torque [-]\nTl,in, el Additional torque loss on input shaft by electric consumers [Nm]\nTl,in,min_el Additional torque loss on input shaft by electric consumers corresponding to minimum electric power [Nm]\nTl,in,max_el Additional torque loss on input shaft by electric consumers corresponding to maximum electric power [Nm]\nPel Electric power consumption of electric consumers in transmission measured during transmission loss testing [W]\nTmax,in Maximum allowed input torque for any forward gear in the transmission [Nm]",
  "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/2017/2400/annex/VI/division/3/division/3.1",
    "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."
}