Document ID: chunk:federal_register_of_legislation:F2024L00447:reg:0:p54
Version: federal_register_of_legislation:F2024L00447
Segment Type: reg
Provision Reference: reg 0 (pt 54/57)
Character Range: 241670–244894

or particle number [#/km] emissions, emitted over the complete RDE trip and prior to any correction in accordance with this annex

                          is the distance-specific mass of CO2 [g/km], emitted over the RDE trip

                          is the distance-specific mass of CO2 [g/km], emitted over the WLTC cycle

                          is the distance-specific mass of CO2 [g/km], emitted over the WLTC cycle for an OVC-HEV vehicle tested in charge sustaining vehicle operation

                         rk is the ratio between the CO2 emissions measured during the RDE test and the WLTP test

                         RFk is the result evaluation factor calculated for the RDE trip

                         RFL1 is the first parameter of the function used to calculate the result evaluation factor

                         RFL2 is the second parameter of the function used to calculate the result evaluation factor

              3. Calculation of the Intermediate RDE emissions results

              For the valid trips, the intermediate RDE results are calculated as follows for vehicles with ICE, NOVC-HEV and OVC-HEV.

              Any instantaneous emissions or exhaust flow measurements obtained while the combustion engine is deactivated, as defined in paragraph 3.6.3. of this Regulation, shall be set to zero.

              Any correction of the instantaneous criteria emissions for Extended conditions according to paragraphs 8.1., 10.5. and 10.6. of this Regulation shall be applied.

              For the complete RDE trip and for the urban part of the RDE trip (k=t=total, k=u=urban):

           The values of the parameter RFL1 and RFL2 of the function used to calculate the result evaluation factor are as follows:

              RFL1 = 1.30 and RFL2 = 1.50;

              The RDE result evaluation factors RFk (k=t=total, k=u=urban) shall be obtained using the functions laid down in paragraph 2.2. for vehicles with ICE and NOVC-HEV, and in paragraph 2.3. for OVC-HEV. A graphical illustration of the method is provided in Figure A11/1 below, while the mathematical formulas are found in Table A11/1:

    Figure A11/1
    Function to calculate the result evaluation factor

    Table A11/1
    Result evaluation factors calculation

When:  Then the Result evaluation factor   is:  Where:

       RFk = 1

3.1. RDE result evaluation factor for vehicles with ICE and NOVC-HEV
              The value of the RDE result evaluation factor depends on the ratio rk  between the distance specific CO2 emissions measured during the RDE test and the distance-specific CO2 emitted by the vehicle over the validation WLTP test conducted on this vehicle including all appropriate corrections.

              For the urban emissions, the relevant phases of the WLTP test shall be:

                  (a) For ICE vehicles, the first two WLTC phases, i.e. the Low and the Medium speed phases,

                  (b) For NOVC-HEVs, all the phases of the WLTC driving cycle.

              3.2. RDE result evaluation factor for OVC-HEV

              The value of the RDE result evaluation factor depends on the ratio  between the distance-specific CO2 emissions measured during the RDE test