Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:6:p19
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 6 (pt 19/25)
Character Range: 1490992–1493986

vehicle L, according to step 6 of Table A8/5 of Annex B8, for the linear CO2 emission interpolation.

              For Level 1B

              An additional averaging of tests using the charge-sustaining CO2-output of step 4a is necessary (not described in Table A8/5). The linearity of the corrected measured and averaged charge-sustaining CO2 emission for vehicle M, MCO2,c,4a,M according to step 4a of Table A8/5 of Annex B8, shall be verified against the linearly interpolated CO2 emission between vehicles L and H over the applicable cycle by using the corrected measured and averaged charge-sustaining CO2 emission MCO2,c,4a,H of vehicle H and MCO2,c,4a,L of vehicle L, according to step 4a used in of Table A8/5 of Annex B8, for the linear CO2 emission interpolation.

              For Level 1A and Level 1B

              The linearity criterion for vehicle M shall be considered fulfilled if the charge-sustaining CO2 emission of vehicle M over the applicable WLTC minus the charge-sustaining CO2 emission derived by interpolation is less than 2 g/km or 3 per cent of the interpolated value, whichever value is less, but at least 1 g/km. See Figure A8/6.

              Figure A8/6
              Linearity criterion for vehicle M

              If the linearity criterion is fulfilled, the interpolation method shall be applicable for all individual vehicle values between vehicles L and H within the interpolation family.

              If the linearity criterion is not fulfilled, the interpolation family shall be split into two sub-families for vehicles with a cycle energy demand between vehicles L and M, and vehicles with a cycle energy demand between vehicles M and H. In such a case, the final values of e.g. the charge-sustaining CO2 emissions of vehicle M shall be determined according to the same process as for vehicles L or H. See Table A8/5, Table A8/6, Table A8/8 and Table A8/9.

              For vehicles with a cycle energy demand between that of vehicles L and M, each parameter of vehicle H necessary for the application of the interpolation method on individual OVC-HEV and NOVC-HEV values, shall be substituted by the corresponding parameter of vehicle M.

              For vehicles with a cycle energy demand between that of vehicles M and H, each parameter of vehicle L that is necessary for the application of the interpolation method on individual OVC-HEV and NOVC-HEV values shall be substituted by the corresponding parameter of vehicle M.

              4.5.2. Calculation of energy demand per period
              The energy demand  and distance driven  per period p applicable for individual vehicles in the interpolation family shall be calculated according to the procedure in paragraph 5. of Annex B7 for the sets k of road load coefficients and masses according to paragraph 3.2.3.2.3. of Annex B7.
              4.5.3. Calculation of the interpolation coefficient for individual vehicles
              The interpolation coefficient  per period