# Commission Implementing Decision (EU) 2019/314 of 21 February 2019 on the approval of the technology used in SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter for use in conventional combustion engine and certain hybrid 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 4.3: Saved mechanical power

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

The 48 V motor generator plus the 48V/12V DC/DC converter generation function lead to saved mechanical power under real-world conditions (ΔPmRW) and type approval conditions (ΔPmTA) as set out in Formula 14.
Formula 14
ΔPm = ΔPmRW – ΔPmTA
Where the saved mechanical power under real-world conditions (ΔPmRW) shall be calculated in accordance with Formula 15 and the saved mechanical power under type-approval conditions (ΔPmTA) in accordance with Formula 16:
Formula 15
ΔP mRW = P RW η B − P RW η TOT
Formula 16
ΔP mTA = P TA η B − P TA η TOT
where
PRW Power requirement under ‘real-world’ conditions [W], which is estimated at 750W
PTA Power requirement under type-approval NEDC conditions [W], which is estimated at 350W
ηB Efficiency of the baseline alternator [%], which is 67 %

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Source: https://www.legislation.gov.uk/eudn/2019/314/annex/division/4/division/4.3 (the official version)
Page: https://openlegislation.uk/eu-decision-2019-314/annex/division-4/division-4.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.