# Commission Implementing Decision (EU) 2017/785 of 5 May 2017 on the approval of efficient 12 V motor-generators for use in conventional combustion engine powered passenger cars 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), Division: Formula 10

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

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 12 V motor generator 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 fuel
CO2 correction coefficient due to the positive mass difference ( ΔCO 2 m )[g CO2/km]
Petrol
0,0277 · Δm
Diesel
0,0383 · Δm
Δm (in Table 4) is the extra mass due to the installation of the motor generator. It is the positive difference between the mass of the efficient 12 V motor generator 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.

---
Source: https://www.legislation.gov.uk/eudn/2017/785/annex/division/6/division/1 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-785/annex/division-6/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.