Document ID: chunk:federal_register_of_legislation:F2022C00213:reg:120:p14
Version: federal_register_of_legislation:F2022C00213
Segment Type: reg
Provision Reference: reg 120 (pt 14/56)
Character Range: 193021–195943

set after turn on of the ignition key (normal mode).

       6.1.1. Emissions of carbon dioxide (CO2) and fuel consumption shall be determined separately for the Part One (urban driving) and the Part Two (extra-urban driving) of the specified driving cycle.

       6.2. For preconditioning, at least 2 consecutive complete driving cycles (one Part One and one Part two) are carried out without intermediate soak, using the applicable driving cycle and gear shifting prescriptions as defined in paragraph 1.4. of this annex.

       6.3. Test results

       6.3.1. The test results (fuel consumption C [l/100 km] and CO2-emission M [g/km]) of this test are corrected in function of the energy balance Ebatt of the vehicle's battery.

        The corrected values (C0 [l/100 km] and M0 [g/km]) should correspond to a zero energy balance (Ebatt = 0), and are calculated using a correction coefficient determined by the manufacturer as defined below.

        In case of other storage systems than an electric battery, Ebatt is representing Estorage, the energy balance of the electric energy storage device.

       6.3.1.1. The electricity balance Q [Ah], measured using the procedure specified in appendix 2 to this annex, is used as a measure of the difference in the vehicle battery's energy content at the end of the cycle compared to the beginning of the cycle.  The electricity balance is to be determined separately for the Part One cycle and the Part Two cycle.

       6.3.2. Under the conditions below, it is allowed to take the uncorrected measured values C and M as the test results:

            1) in case the manufacturer can prove that there is no relation between the energy balance and fuel consumption,

            2) in case that Ebatt always corresponds to a battery charging

            3) in case that Ebatt always corresponds to a battery decharging and Ebatt is within 1 per cent of the energy content of the consumed fuel (consumed fuel meaning the total fuel consumption over 1 cycle)

        The change in battery energy content Ebatt can be calculated from the measured electricity balance Q as follows:

       Ebatt  = SOC(%)·ETEbatt  0.0036·|Ah|·Vbatt  =  0.0036·Q·Vbatt  (MJ)

        with ETEbatt [MJ] the total energy storage capacity of the battery and Vbatt [V] the nominal battery voltage.

       6.3.3. Fuel consumption correction coefficient (Kfuel) defined by the manufacturer

       6.3.3.1. The fuel consumption correction coefficient (Kfuel) shall be determined from a set of n measurements performed by the manufacturer.  This set should contain at least one measurement with Qi < 0 and at least one with Qj > 0.

        If the latter condition can not be realised on the driving cycle (Part One or Part Two) used in this test, then it is up to the Technical Service to judge the statistical significance of the extrapolation necessary to