{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-I/appendix-1",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-I/appendix-1.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/I/appendix/1",
  "kind": "appendix",
  "number": "1",
  "heading": null,
  "text": "Summary of approval process for natural gas and LPG fuelled engines including dual-fuel engines\nTables 1.1 to 1.3.show a summary of the approval process for of natural gas fuelled engines and LPG fuelled engines and of the minimum number of tests required for approval of dual-fuel engines.\nTable 1.1\nEU type-approval of natural gas fuelled engines\nPoint 2.3: Requirements for an universal fuel range engine\nNumber of test runs\nCalculation of ‘r’\nPoint 2.4: Requirements for a restricted fuel range engine\nNumber of test runs\nCalculation of ‘r’\nRefer to point 2.3.1.\nNG-engine adaptable to any fuel composition\nGR (1) and G25 (2)\nAt manufacturer's request engine may be tested on an additional market fuel (3),\nif Sl = 0,89 – 1,19\n2\n(max. 3)\nr = fuel 2 G 25 fuel 1 G R and, if tested with an additional fuel;\nr a = fuel 2 G 25 fuel 3 market fuel and\nr b = fuel 1 G R fuel 3 G 23 or market fuel\nRefer to point 2.3.2.\nNG-engine which is self-adaptive by a switch\nGR (1) and G23 (3) for H and\nG25 (2) and G23 (3) for L\nAt manufacturer's request engine may be tested on a market fuel (3) instead of G23,\nif Sl = 0,89 – 1,19\n2 for the H-range, and\n2 for the L-range;\nat respective position of switch\nr b = fuel 1 G R fuel 3 G 23 or market fuel and\nr a = fuel 2 G 25 fuel 3 G 23 or market fuel\nRefer to point 2.4.1.\nNG-engine laid out for operation on either H-range gas or L-range gas\nGR (1) and G23 (3) for H or\nG25 (2) and G23 (3) for L\nAt manufacturer's request engine may be tested on a market fuel (3) instead of G23,\nif Sl = 0,89 – 1,19\n2 for the H-range\nor\n2 for the L-range\n2\nr b = fuel 1 G R fuel 3 G 23 or market fuel for the H-range\nor\nr a = fuel 2 G 25 fuel 3 G 23 or market fuel for the L-range\nRefer to point 2.4.2.\nNG-engine laid out for operation on one specific fuel composition\nGR (1) and G25 (2),\nFine-tuning between the tests allowed.\nAt manufacturer's request engine may be tested on:\nGR (1) and G23 (3) for H or\nG25 (2) and G23 (3) for L\n2\n2 for the H-range\nor\n2 for the L-range\nTable 1.2\nEU type-approval of LPG fuelled engines\nPoint 2.3: Requirements for an universal fuel range engine\nNumber of test runs\nCalculation of ‘r’\nPoint 2.4: Requirements for a restricted fuel range engine\nNumber of test runs\nCalculation of ‘r’\nRefer to point 2.3.4.LPG-engine adaptable to any fuel composition\nFuel A and fuel B\n2\nr = fuel B fuel A\nRefer to point 2.4.2.LPG-engine laid out for operation on one specific fuel composition\nFuel A and fuel B, fine-tuning between the tests allowed\n2\nTable 1.3\nMinimum number of tests required for EU type-approval of dual-fuel engines\nDual-fuel type\nLiquid-fuel mode\nDual-fuel mode\nCNG\nLNG\nLNG20\nLPG\n1A\nUniversal or restricted\n(2 tests)\nUniversal\n(2 tests)\nFuel-specific\n(1 test)\nUniversal or restricted\n(2 tests)\n1B\nUniversal\n(1 test)\nUniversal or restricted\n(2 tests)\nUniversal\n(2 tests)\nFuel-specific\n(1 test)\nUniversal or restricted\n(2 tests)\n2A\nUniversal or restricted\n(2 tests)\nUniversal\n(2 tests)\nFuel-specific\n(1 test)\nUniversal or restricted\n(2 tests)\n2B\nUniversal\n(1 test)\nUniversal or restricted\n(2 tests)\nUniversal\n(2 tests)\nFuel-specific\n(1 test)\nUniversal or restricted\n(2 tests)\n3B\nUniversal\n(1 test)\nUniversal or restricted\n(2 tests)\nUniversal\n(2 tests)\nFuel-specific\n(1 test)\nUniversal or restricted\n(2 tests)",
  "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/I/appendix/1",
    "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."
}