Document ID: chunk:federal_register_of_legislation:F2024L00447:reg:0:p45
Version: federal_register_of_legislation:F2024L00447
Segment Type: reg
Provision Reference: reg 0 (pt 45/57)
Character Range: 216477–219680

vehicle are defined from the vehicle CO2 emissions versus average speed measured at type approval on the WLTP test and referred to as 'vehicle CO2 characteristic curve'.

              4.2. CO2 characteristic curve reference points

              The distance specific CO2 emissions of the tested vehicle shall be taken from the applicable phases of the validation WLTP 4-phase test run in accordance with UN Regulation No. 154 on WLTP on that particular vehicle. The value for OVC-HEV vehicles is to be that obtained from the applicable WLTP test conducted using Charge Sustaining vehicle operation.

              During type approval, the CO2 reference values shall be taken from the WLTP test of the individual vehicle, obtained in accordance with UN Regulation No 154, including all appropriate corrections.

              The reference points P1, P2 and P3 required to define the vehicle CO2 characteristic curve shall be established as follows:

              4.2.1. Point P1

              (Average Speed of the Low Speed phase of the WLTP cycle)

              = Vehicle CO2 emissions over the Low Speed phase of the WLTP test [g/km]

              4.2.2. Point P2

              (Average Speed of the High Speed phase of the WLTP cycle)

              = Vehicle CO2 emissions over the High Speed phase of the WLTP test [g/km]

              4.2.3. Point P3

              (Average Speed of the Extra High Speed phase of the WLTP cycle)

               = Vehicle CO2 emissions over the Extra High Speed phase of the WLTP test [g/km] (for analysis with 4-phase WLTP)

              and

              (for analysis with 3-phase WLTP)

              4.3. CO2 characteristic curve definition

              Using the reference points defined in paragraph 4.2., the characteristic curve CO2 emissions are calculated as a function of the average speed using two linear sections (P1, P2) and (P2, P3). The section (P2, P3) is limited to 145 km/h on the vehicle speed axis. The characteristic curve is defined by equations as follows:

    Figure A8/3
    Vehicle CO2 characteristic curve and tolerances for ICE and NOVC-HEV vehicles

    Figure A8/4:
    Vehicle CO2 characteristic curve and tolerances for OVC-HEV vehicles
    Figure A8/3-2
       Vehicle CO2 characteristic curve and tolerances for ICE and NOVC-HEV vehicles for 3-phase WLTP
    Figure A8/4-2
       Vehicle CO2 characteristic curve and tolerances for OVC-HEV vehicles for 3-phase WLTP

              4.4.1. Low, medium and high speed windows (for analysis with 4-phase WLTP)
              The windows shall be categorised into low, medium and high speed bins according to their average speed.

              4.4.1.1. Low speed windows

              Low speed windows are characterized by average vehicle ground speeds lower than 45 km/h.

              4.4.1.2. Medium speed windows

              Medium speed windows are characterized by average vehicle ground speeds  greater than or equal to 45 km/h and lower than 80 km/h.

              4.4.1.3. High speed windows

              High speed windows are characterized by average vehicle ground speeds  greater than or equal to 80 km/h and lower than 145 km/h

    Figure