Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p95
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 95/108)
Character Range: 1156769–1160216

balance value calculated at a minimum sample frequency of 5 Hz;
                  (c) The charging balance value via an OBD connector as described in SAE J1962.
              2.2.2. The accuracy of the vehicle on-board REESS charging and discharging data shall be demonstrated by the manufacturer to the responsible authority.
              The manufacturer may create a REESS monitoring vehicle family to prove that the vehicle on-board REESS charging and discharging data are correct. The accuracy of the data shall be demonstrated on a representative vehicle.
              The following family criteria shall be valid:
                  (a) Identical combustion processes (i.e. positive ignition, compression  ignition, two-stroke, four-stroke);
                  (b) Identical charge and/or recuperation strategy (software REESS data module);
              (c) On-board data availability;
              (d) Identical charging balance measured by REESS data module;
              (e) Identical on-board charging balance simulation.
              2.2.3. All REESS having no influence on CO2 emissions shall be excluded from monitoring.
              3. REESS energy change-based correction procedure
              3.1. Measurement of the REESS current shall start at the same time as the test starts and shall end immediately after the vehicle has driven the complete driving cycle.
              3.2. The electricity balance Q measured in the electric power supply system shall be used as a measure of the difference in the REESS energy content at the end of the cycle compared to the beginning of the cycle. The electricity balance shall be determined for the total driven WLTC.
              3.3. Separate values of  shall be logged over the driven cycle phases.
              3.4. Correction of CO2 emission over the whole cycle
              3.4.1. (Reserved)
              3.4.2. The correction shall be applied if  is negative (corresponding to REESS discharging)
              At the request of the manufacturer, the correction may be omitted and uncorrected values may be used if:
                  (a)  is positive (corresponding to REESS charging);
                  (b) the manufacturer can prove to the responsible authority by measurement that there is no relation between  and  mass emission and  and fuel consumption respectively.
       Table A6.App2/1
       Energy content of fuel (as applicable)

Fuel        Petrol  Petrol (E10)  Ethanol (E85)  Diesel (B0)  Diesel (B7)  LPG              CNG
            (E0)
Heat value  8.92    8.64 kWh/l    6.41 kWh/l     9.85         9.79 kWh/l   12.86 x ρ kWh/l  11.39 kWh/m³
            kWh/l                                kWh/l

              ρ = test fuel density at 15°C (kg/l)

              4. Applying the correction function
              4.1. To apply the correction function, the electric energy change  of a period j of all REESSs shall be calculated from the measured current and the nominal voltage:
              where:
                      is the electric energy change of REESS i during the considered period j, Wh;
                     and:
                     where:
                      is the nominal REESS voltage determined according to IEC 60050-482, V;
                      is the electric current of REESS i during the considered period j, determined according to paragraph 2. of this appendix, A;
                      is the time at the beginning of the