Commission Implementing Decision (EU) 2017/785Dangos y teitl llawn

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)

6. Statistical significance

It has to be demonstrated for each type, variant and version of a vehicle fitted with the efficient 12 V motor generator that the error in the CO2 savings calculated in accordance with Formula 9 is not greater than the difference between the total CO2 savings and the minimum savings threshold specified in Article 9(1) of Implementing Regulation (EU) No 725/2011 (see Formula 10).

Formula 10

Where:

MT

:

minimum threshold [g CO2/km]

:

total CO2 saving [g CO2/km]

:

standard deviation of the total CO2 saving [gCO2/km]

:

CO2 correction coefficient due to the positive mass difference between the efficient 12 V motor generator and the baseline alternator. For the data in Table 4 is to be used.

Table 4

CO2 correction coefficient due to the extra mass

Type of fuelCO2 correction coefficient due to the positive mass difference ( )[g CO2/km]
Petrol0,0277 · Δm
Diesel0,0383 · 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.