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Division 3 CALCULATION OF THE CO2 SAVINGS

United Kingdom

Original text. Later amendments are not shown.

The CO2 savings shall be calculated in accordance with Formula 4.

Formula 4

where,

v

  • is the mean driving speed of the NEDC, which is 33,58 km/h

    • ηA

  • is the efficiency of the alternator, which is 0,67

    • UFi

  • is the usage factor of the vehicle light i as defined in Table 4

    • VPe

  • is the consumption of effective power for each fuel approved, as defined in Table 5

    • CF

  • is the fuel conversion factor as defined in Table 6.

    • Table 4

    Usage factor for different vehicle lights

    Vehicle lightUsage factor (UF)
    Low beam headlamp0,33
    High beam headlamp0,03
    Front position0,36
    License plate0,36
    Front fog lamp0,01
    Rear fog lamp0,01
    Front turn signal lamp0,15
    Rear turn signal lamp0,15
    Reversing lamp0,01
    Cornering lamp0,025
    Static Bending lamp0,039
    End-outline marker lamps (vehicles width > 2,1 m)0,36
    Side marker lamps (vehicles length > 6 m)0,36

    Table 5

    Consumption of effective power

    Type of EngineConsumption of effective power VPe [l/kWh]
    Petrol/E850,264
    Petrol/E85 Turbo0,280
    Diesel0,220
    LPG0,342
    LPG Turbo0,363
    Consumption of effective power VPe [m3/kWh]
    CNG (G20)0,259
    CNG (G20) Turbo0,275

    Table 6

    Fuel Conversion Factor

    Type of fuelConversion factor (CF) [g CO2/l]
    Petrol/E852 330
    Diesel2 640
    LPG1 629
    Conversion factor (CF) [g CO2/m3]
    CNG (G20)1 795