# Commission Implementing Decision (EU) 2020/1167 of 6 August 2020 on the approval of the technology used in a 48 Volt efficient motor-generator combined with a 48 Volt/12 Volt DC/DC converter for use in conventional combustion engine and certain hybrid electric passenger cars and light commercial vehicles as an innovative technology pursuant to Regulation (EU) 2019/631 of the European Parliament and of the Council) (Text with EEA relevance), Division 3.1: Saved mechanical power

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

The difference [W] between the saved mechanical power when using the 48V motor generator combined with the 48V/12V DC/DC converter under real-world conditions and the saved mechanical power when using the 48V motor generator combined with the 48V/12V DC/DC converter under type-approval conditions shall be calculated in accordance with Formula 5.
Formula 5
where
shall be calculated in accordance with Formula 6 and in accordance with Formula 7.
Formula 6
Formula 7
where,
is the efficiency of the 48V motor-generator combined with the 48V/12V DC/DC converter, as determined in point 2.3 [%]
is the power requirement under ‘real-world’ conditions, which is 750 W
is the power requirement under ‘type-approval’ conditions, which is 350 W
is the efficiency of the baseline alternator, which is 67 %

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Source: https://www.legislation.gov.uk/eudn/2020/1167/annex/division/3/division/3.1 (the official version)
Page: https://openlegislation.uk/eu-decision-2020-1167/annex/division-3/division-3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.