{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-7/division-7.8/division-7.8.2/division-7.8.2.4",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-7/division-7.8/division-7.8.2/division-7.8.2.4.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/VI/division/7/division/7.8/division/7.8.2/division/7.8.2.4",
  "kind": "division",
  "number": "7.8.2.4",
  "heading": "Validation criteria",
  "text": "RMC tests shall be validated using the regression analysis as described in points 7.8.3.3 and 7.8.3.5. The allowed RMC tolerances are given in the following Table 6.1. Note that the RMC tolerances are different from the NRTC tolerances of Table 6.2. When conducting testing of engines of reference power greater than 560 kW the regression line tolerances of Table 6.2 and the point deletion of Table 6.3 may be used.\nTable 6.1\nRMC Regression line tolerances\nSpeed\nTorque\nPower\nStandard error of estimate (SEE) of y on x\nmaximum 1 % of rated speed\nmaximum 2 % of maximum engine torque\nmaximum 2 % of maximum engine power\nSlope of the regression line, a 1\n0,99 to 1,01\n0,98 - 1,02\n0,98 - 1,02\nCoefficient of determination, r 2\nminimum 0,990\nminimum 0,950\nminimum 0,950\ny intercept of the regression line, a 0\n± 1 % of rated speed\n± 20 Nm or 2 % of maximum torque whichever is greater\n± 4 kW or 2 % of maximum power whichever is greater\nIn case of running the RMC test not on a transient test bed, where the second by second speed and torque values are not available, the following validation criteria shall be used.\nAt each mode the requirements for the speed and torque tolerances are given in point 7.8.1.3. For the 20 s linear speed and linear torque transitions between the RMC steady-state test modes (point 7.4.1.2) the following tolerances for speed and load shall be applied for the ramp:\n(a) the speed shall be held linear within ± 2 % of rated speed,\n(b) the torque shall be held linear within ± 5 % of the maximum torque at rated speed.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Delegated Regulation (EU) 2018/989 of 18 May 2018 amending and correcting Delegated Regulation (EU) 2017/654 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 (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/7/division/7.8/division/7.8.2/division/7.8.2.4",
    "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."
}