OpenLegislation

Division 6 STATISTICAL SIGNIFICANCE (for both methods)

United Kingdom

Original text. Later amendments are not shown.

It shall be demonstrated for each type, variant and version of a vehicle fitted with the efficient 48V motor generator that the uncertainty of the CO2 savings calculated in accordance with Formula 7 or Formula 17 is not greater than the difference between the total CO2 savings and the minimum savings threshold specified in Article 9(1) of Implementing Regulation (EU) No 725/2011 and Commission Implementing Regulation (EU) No 427/2014f1 (see Formula 21).

Formula 21

MT < C CO 2 − s C CO 2 − ΔCO 2 m

Where:

MT

  • minimum threshold [g CO2/km]

    • C CO 2

  • total CO2 saving [g CO2/km]

    • s C CO 2

  • standard deviation of the total CO2 saving [gCO2/km]

    • ΔCO 2 m

  • CO2 correction coefficient due to the positive mass difference between the efficient 48V motor generator plus 48V/12V DC-DC converter and the baseline alternator. For ΔCO 2 m the data in Table 4 is to be used.

    Table 4

    CO2 correction coefficient due to the extra mass

    Type of fuelCO2 correction coefficient due to the positive mass difference ( ΔCO 2 m )[g CO2/km]
    Petrol0,0277 · Δm
    Diesel0,0383 · Δm

    • Δm (in Table 4) is the extra mass due to the installation of the 48V motor generator and the 48V/12V DC-DC converter. It is the positive difference between the mass of the 48V motor generator plus the 48V/12V DC-DC converter and the mass of baseline alternator. The mass of the baseline alternator is 7 kg. The extra mass is to be verified and confirmed in the verification report to be submitted to the type approval authority together with the application for certifications.

    Annotations

    Footnotes

    f1

    Commission Implementing Regulation (EU) No 427/2014 of 25 April 2014 establishing a procedure for the approval and certification of innovative technologies for reducing CO2 emissions from light commercial vehicles pursuant to Regulation (EU) No 510/2011 of the European Parliament and of the Council (OJ L 125, 26.4.2014, p. 57).