{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-3/division-3.3/division-3.3.3",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-3/division-3.3/division-3.3.3.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/3/division/3.3/division/3.3.3",
  "kind": "division",
  "number": "3.3.3",
  "heading": "Fuel properties",
  "text": "The general chemical formula of fuel is CH α O β S γ N δ with α atomic hydrogen-to-carbon ratio (H/C), β atomic oxygen-to-carbon ratio (O/C), γ atomic sulphur-to-carbon ratio (S/C) and δ atomic nitrogen-to-carbon ratio (N/C). Based on this formula the carbon mass fraction of fuel w C can be calculated. In case of diesel fuel the simple formula CH α O β may be used. Default values for fuel composition may be derived from Table 7.3:\nTable 7.3\nDefault values of atomic hydrogen-to-carbon ratio, α, atomic oxygen-to-carbon ratio, β, atomic sulphur-to-carbon ratio, γ, atomic nitrogen-to-carbon ratio, δ, and carbon mass fraction of fuel, w C for reference fuels\nFuel\nAtomic hydrogen, oxygen, sulphur and nitrogen-to-carbon ratiosCHαOβSγNδ\nCarbon mass concentration, w C[g/g]\nDiesel (non-road gas-oil)\nCH1,80O0S0N0\n0,869\nEthanol for dedicated compression ignition engines (ED95)\nCH2,92O0,46S0N0\n0,538\nPetrol (E10)\nCH1,92O0,03S0N0\n0,833\nPetrol (E0)\nCH1,85O0S0N0\n0,866\nEthanol (E85)\nCH2,73O0,36S0N0\n0,576\nLPG\nCH2,64O0S0N0\n0,819\nNatural Gas/Biomethane\nCH3,78O0,016S0N0\n0,747",
  "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/3/division/3.3/division/3.3.3",
    "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."
}