# Commission Implementing Decision (EU) 2020/728 of 29 May 2020 on the approval of the efficient generator function used in 12 volt motor-generators for use in certain 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: Symbols

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

—
CO2 savings [g CO2/km]
CO2
—
Carbon dioxide
CF
—
Conversion factor as defined in Table 3
H
—
Frequency as defined in Table 1
I
—
Current intensity at which the measurement shall be carried out [A]
M
—
Number of measurements of the sample
M
—
Torque [Nm]
N
—
Rotational frequency [min-1] as defined in Table 1
P
—
Power [W]
—
Standard deviation of the efficiency of the generator function of the 12 V motor-generator (hereinafter ‘the motor-generator efficiency’) [%]
—
Standard deviation of the motor-generator efficiency mean [%]
—
Standard deviation of the total CO2 savings [g CO2/km]
U
—
Test voltage at which the measurement shall be carried out [V]
v
—
Mean driving speed of the New European Driving Cycle (NEDC) [km/h]
Vpe
—
Consumption of effective power as defined in Table 2
—
Sensitivity of calculated CO2 savings related to the motor-generator efficiency
Δ
—
Difference
—
Baseline alternator efficiency [%]
—
Motor-generator efficiency [%]
—
Mean of the motor-generator efficiency at operating point i [%]

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Source: https://www.legislation.gov.uk/eudn/2020/728/annex/division/2/division/1 (the official version)
Page: https://openlegislation.uk/eu-decision-2020-728/annex/division-2/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.