{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/7/division/division-6./division-6.13.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/7/division/division-6./division-6.13..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/7/division/division/6./division/6.13.",
  "kind": "division",
  "number": "6.13",
  "heading": null,
  "text": "Fuel consumption for a vehicle with a positive ignition engine fuelled by hydrogen:\nFC=0,024×Vd×1Z1×p1T1−1Z2×p2T2For vehicles fuelled either with gaseous or liquid hydrogen, and with approval of the approval authority, the manufacturer may choose to calculate fuel consumption using either the equation for FC below or a method using a standard protocol such as SAE J2572.\nFC=0,1×0,1119× H2O+ H2The compressibility factor, Z, shall be obtained from the following table:\nTable A7/2\nCompressibility factor Z\nT (K)\n5\n100\n200\n300\n400\n500\n600\n700\n800\n900\np (bar)\n33\n0,859\n1,051\n1,885\n2,648\n3,365\n4,051\n4,712\n5,352\n5,973\n6,576\n53\n0,965\n0,922\n1,416\n1,891\n2,338\n2,765\n3,174\n3,57\n3,954\n4,329\n73\n0,989\n0,991\n1,278\n1,604\n1,923\n2,229\n2,525\n2,810\n3,088\n3,358\n93\n0,997\n1,042\n1,233\n1,470\n1,711\n1,947\n2,177\n2,400\n2,617\n2,829\n113\n1,000\n1,066\n1,213\n1,395\n1,586\n1,776\n1,963\n2,146\n2,324\n2,498\n133\n1,002\n1,076\n1,199\n1,347\n1,504\n1,662\n1,819\n1,973\n2,124\n2,271\n153\n1,003\n1,079\n1,187\n1,312\n1,445\n1,580\n1,715\n1,848\n1,979\n2,107\n173\n1,003\n1,079\n1,176\n1,285\n1,401\n1,518\n1,636\n1,753\n1,868\n1,981\n193\n1,003\n1,077\n1,165\n1,263\n1,365\n1,469\n1,574\n1,678\n1,781\n1,882\n213\n1,003\n1,071\n1,147\n1,228\n1,311\n1,396\n1,482\n1,567\n1,652\n1,735\n233\n1,004\n1,071\n1,148\n1,228\n1,312\n1,397\n1,482\n1,568\n1,652\n1,736\n248\n1,003\n1,069\n1,141\n1,217\n1,296\n1,375\n1,455\n1,535\n1,614\n1,693\n263\n1,003\n1,066\n1,136\n1,207\n1,281\n1,356\n1,431\n1,506\n1,581\n1,655\n278\n1,003\n1,064\n1,130\n1,198\n1,268\n1,339\n1,409\n1,480\n1,551\n1,621\n293\n1,003\n1,062\n1,125\n1,190\n1,256\n1,323\n1,390\n1,457\n1,524\n1,590\n308\n1,003\n1,060\n1,120\n1,182\n1,245\n1,308\n1,372\n1,436\n1,499\n1,562\n323\n1,003\n1,057\n1,116\n1,175\n1,235\n1,295\n1,356\n1,417\n1,477\n1,537\n338\n1,003\n1,055\n1,111\n1,168\n1,225\n1,283\n1,341\n1,399\n1,457\n1,514\n353\n1,003\n1,054\n1,107\n1,162\n1,217\n1,272\n1,327\n1,383\n1,438\n1,493\nIn the case that the required input values for p and T are not indicated in the table, the compressibility factor shall be obtained by linear interpolation between the compressibility factors indicated in the table, choosing the ones that are the closest to the sought value.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/7/division/division/6./division/6.13.",
    "retrieved_at": "2026-11-01T14:44:48.753743+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."
}