Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:6:p18
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 6 (pt 18/25)
Character Range: 1488337–1491262

apply for the application of a road load matrix family or when the calculation of the road load of vehicles L and H is based on the default road load.
              Figure A8/3
              Interpolation range between vehicle H and vehicle L applied to EVs

              4.5.1.1.3. The allowed interpolation range defined in paragraph 4.5.1.1.2. of this annex may be increased by 10 g/km charge-sustaining CO2 if a vehicle M is tested within that family and the conditions according to paragraph 4.5.1.1.5. of this annex are fulfilled. This increase is allowed only once within an interpolation family. See Figure A8/4.
Figure A8/4
Interpolation range for EVs with vehicle M
              4.5.1.1.4. At the request of the manufacturer and with approval of the responsible authority, the application of the interpolation method on individual vehicle values within a family may be extended if the maximum extrapolation of an individual vehicle (Step 9 in Table A8/5) is not more than 3 g/km above the charge-sustaining CO2 emission of vehicle H (Step 8 in Table A8/5) and/or is not more than 3 g/km below the charge-sustaining CO2 emission of vehicle L (Step 8 in Table A8/5). This extrapolation is valid only within the absolute boundaries of the interpolation range specified in this paragraph.
              For the application of a road load matrix family, or when the calculation of the road load of vehicles L and H is based on the default road load, extrapolation is not permitted.
              4.5.1.1.5. Vehicle M

              Vehicle M is a vehicle within the interpolation family between vehicles L and H with a cycle energy demand which is preferably closest to the average of vehicles L and H.

              The limits of the selection of vehicle M (see Figure A8/5) are such that neither the difference in CO2 emission between vehicles H and M nor the difference in charge-sustaining CO2 emission between vehicles M and L is higher than the allowed charge-sustaining CO2 range according to paragraph 4.5.1.1.2. of this annex. The defined road load coefficients and the defined test mass shall be recorded.

              Figure A8/5
              Limits for the selection of vehicle M

              For Level 1A

              The linearity of the corrected measured and averaged charge-sustaining CO2 emission for vehicle M, MCO2,c,6,M according to step 6 of Table A8/5 of Annex B8, shall be verified against the linearly interpolated charge-sustaining CO2 emission between vehicles L and H over the applicable cycle by using the corrected measured and averaged charge-sustaining CO2 emission MCO2,c,6,H of vehicle H and MCO2,c,6,L of 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).