Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:9:p15
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 9 (pt 15/37)
Character Range: 1819286–1822236

and worst case mode. Best and worst case modes shall be identified by the evidence provided on the CO2 emissions in all modes. CO2 emissions shall be the arithmetic average of the test results in both modes. Test results for both modes shall be recorded.

                  At the request of the manufacturer, the vehicle may alternatively be tested with the driver-selectable mode in the worst case position for CO2 emissions;
                  (c) If several modes are capable of following the reference test cycle under charge-sustaining operating conditions and at least two or more of those modes are a configurable start mode, the worst case mode for CO2 emissions and fuel consumption shall be selected from these configurable start modes.
              3.3. If there is no mode according to paragraph 3.1. and paragraph 3.2. of this appendix that enables the vehicle to follow the reference test cycle, the reference test cycle shall be modified according to paragraph 9. of Annex B1:
                  (a) If there is a predominant mode which allows the vehicle to follow the modified reference test cycle under charge-sustaining operating condition, this mode shall be selected.
                  (b) If there is no predominant mode but other modes which allow the vehicle to follow the modified reference test cycle under charge-sustaining operating condition, the worst case mode for CO2 emissions and fuel consumption of these modes shall be selected.
                  (c) If there is no mode which allows the vehicle to follow the modified reference test cycle under charge-sustaining operating condition, the mode or modes with the highest cycle energy demand shall be identified and the worst case mode for CO2 emissions and fuel consumption of those modes shall be selected. In the case that at least two or more of these modes are a configurable start mode, the worst case mode for CO2 emissions and fuel consumption shall be selected from these modes.

Figure A8.App6/2a and Figure A8.App6/2b
Selection of a driver-selectable mode for OVC-HEVs, NOVC-HEVs, OVC-FCHVs and NOVC- FCHVs under charge-sustaining operating condition

              4. PEVs equipped with a driver-selectable mode

              For vehicles equipped with a driver-selectable mode, the mode for the test shall be selected according to the following conditions.
              The flow chart in Figure A8.App6/3 illustrates the mode selection according to this paragraph.
              4.1. If there is a predominant mode that enables the vehicle to follow the reference test cycle, this mode shall be selected.
              4.2. If there is no predominant mode or if there is a predominant mode but this mode does not enable the vehicle to follow the reference test cycle, the mode for the test shall be selected according to the following conditions:
                  (a) If there is only one mode which allows the vehicle to follow the reference test