# 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to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance) (2013/341/EU) (repealed), Division 6: Error in the CO2 savings due to the standard deviation (propagation law)

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

The standard deviation of the efficiency value of the alternator (ΔηΑ), leads to an error in the CO2 savings. This error is to be calculated by means of the following formula:
Formula (5) ΔCO 2 = P m − RW − P m − TA × 1 ∕ η Α − EI 2 × Δη Α × V Pe × CF p ∕ v
Where:
ΔCO2 error in CO2 savings (g CO2/km);
PRW 750 W;
PTA 350 W;
ηΑ–EI Efficiency of the high efficient alternator;
ΔηΑ Standard deviation of the efficiency of the alternator (result of equation in Formula (4);
VPe Willans’ factors (l/kWh);
CF Conversion factors (g CO2/l);
v mean driving speed of the NEDC (km/h)

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Source: https://www.legislation.gov.uk/eudn/2013/341/annex/division/6 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-341/annex/division-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.