# Commission Implementing Decision of 27 June 2013 on the approval of the Valeo Efficient Generation Alternator as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance) (2013/341/EU) (repealed), Division 8: Formula to calculate the CO2 savings

Extent: E+W+S+N.I.

The CO2 savings are to be calculated with the following formula:
Formula (9) C CO 2 = ΔΡ m × V Pe × CF ∕ v
Where:
CCO2 CO2 savings (g CO2/km);
ΔΡm Accountable share of saved mechanical power as per formula (8) (W);
VPe Willans’ factors (l/kWh);
CF Conversion factors (g CO2/l)
v mean driving speed of the NEDC (km/h)
For the Willans’ factors the data in table 1 is to be used:
Table 1
Willans’ factors
Type of engine
Consumption of effective power VPe[l/kWh]
Petrol (VPe-P)
0,264
Petro Turbo
0,28
Diesel (VPe-D)
0,22
For the conversion factors the data in table 2 is to be used:
Table 2
Conversion factors
Type of fuel
Conversion factor (l/100 km) → (g CO2/km)[100 g/l]
Petrol
23,3 (= 2 330 g CO2/l)
Petro Turbo
23,3 (= 2 330 g CO2/l)
Diesel
26,4 (= 2 640 g CO2/l)
The mean driving speed of the NEDC is: v = 33,58 km/h

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Source: https://www.legislation.gov.uk/eudn/2013/341/annex/division/8 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-341/annex/division-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.