
Article 1 
The efficient generator function of a 12 Volt motor-generator is approved as an innovative technology within the meaning of Article 11 of Regulation (EU) 2019/631, taking into account that it is only partially covered by the standard test procedure set out in Regulation (EU) 2017/1151, and provided that the technology conforms to the following:

((a)) it is fitted in passenger cars and light commercial vehicles powered by internal combustion engines capable of running on petrol, diesel, liquefied petroleum gas (LPG), compressed natural gas (CNG) or E85, or in not-off-vehicle charging hybrid electric vehicles (NOVC-HEVs) of the category M1 or N1 that comply with paragraph 1.1.4 of Appendix 2 to Sub-annex 8 to Annex XXI to Regulation (EU) 2017/1151 and that are capable of running on those fuels;
((b)) the efficiency of the generator function, determined in accordance with the methodology set out in the Annex, is at least:

((i)) 73,8 % for petrol- or E85-fuelled vehicles, other than turbo-charged;
((ii)) 73,4 % for turbo-charged petrol- or E85-fuelled vehicles;
((iii)) 74,2 % for diesel-fuelled vehicles;
((iv)) 74,6 % for LPG-fuelled vehicles other than turbo-charged;
((v)) 74,1 % for turbo-charged LPG-fuelled vehicles;
((vi)) 76,3 % for CNG-fuelled vehicles other than turbo-charged;
((vii)) 75,7 % for turbo-charged CNG-fuelled vehicles.
Article 2 

1. A manufacturer may apply to a type-approval authority for certification of the CO2 savings from the use of the technology approved in accordance with Article 1 (‘the innovative technology’) in one or several 12 Volt motor-generators by reference to this Decision.
2. The manufacturer shall ensure that the application for the certification is accompanied by a verification report from an independent and certified body confirming that the conditions set out in Article 1 have been met.
3. Where savings have been certified in accordance with Article 3, the manufacturer shall ensure that the certified CO2 savings and the eco-innovation code referred to in Article 4(1) are recorded in the certificate of conformity of the vehicles concerned.
Article 3 

1. The type-approval authority shall ensure that CO2 savings achieved from the use of the innovative technology have been determined using the methodology set out in the Annex.
2. Where a manufacturer applies for the certification of the CO2 savings from the use of the innovative technology in more than one type of 12 Volt motor-generator in relation to one vehicle version, the type-approval authority shall determine which type of the 12 Volt motor-generators tested delivers the lowest CO2 savings. That value shall be used for the purpose of paragraph 4.
3. Where the innovative technology is fitted in a bi-fuel or flex-fuel vehicle, the approval authority shall record the CO2 savings as follows:
(a) for bi-fuel vehicles using petrol and gaseous fuels, the CO2 savings value with regard to LPG or CNG fuels;
(b) for flex-fuel vehicles using petrol and E85, the CO2 savings value with regard to petrol.
4. The type approval authority shall record the certified CO2 savings determined in accordance with paragraph 1 and 2, and the eco-innovation code referred to in Article 4(1) in the relevant type-approval documentation.
5. The type-approval authority shall record all the elements considered for the certification in a test report and keep that together with the verification report referred to in Article 2(2), and shall make that information available to the Commission on request.
6. The type-approval authority shall only certify CO2 savings, if it finds that the innovative technology complies with the conditions set out in Article 1, and if the CO2 savings determined in accordance with point 3.5 of the Annex are 0,5 g CO2/km or higher, as specified in Article 9(1)(b) of Implementing Regulation (EU) No 725/2011 in the case of passenger cars, or in Article 9(1)(b) of Implementing Regulation (EU) No 427/2014 in the case of light commercial vehicles.
Article 4 

1. The innovative technology approved by this Decision is attributed with the eco-innovation code 33.
2. The certified CO2 savings recorded by reference to that eco-innovation code may be taken into account for the calculation of the average specific emissions of manufacturers starting from the calendar year 2021.
Article 5 
This Decision shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.
Done at Brussels, 27 August 2020.
For the Commission
The President
Ursula VON DER LEYEN
ANNEX
1. 
This Annex sets out the methodology to determine the CO2 (carbon dioxide) emission savings from the use of the efficient generator function of a 12 Volt motor-generator (‘12V motor-generator’) in an M1 or N1 vehicle as specified in Article 1.

2. 
The efficiency of the 12V motor-generator shall be determined in accordance with ISO 8854:2012, with the following precisions.

The manufacturer shall provide evidence to the type-approval authority that the frequency ranges of the 12V motor-generator are the same as or equivalent to those set out in Table 1.

The efficiency of the 12V motor-generator shall be determined on the basis of measurements at each of the operating points listed in Table 1.

The current intensity of the 12V motor-generator at each operating point shall be half the rated current. For each operating point, the voltage and the output current of the 12V motor-generator shall be kept constant during the measurement, with the voltage at 14,3 V.


Operating pointi Holding time[s] Rotational frequencyni [min–1] Frequency of operating pointshi
1 1 200 1 800 0,25
2 1 200 3 000 0,40
3 600 6 000 0,25
4 300 10 000 0,10

The efficiency of the 12V motor-generator at each operating point i () [%] shall be calculated in accordance with Formula 1.



where, for each operating point i,

Uiis the voltage [V];Iiis the current intensity [A];Μiis the torque [Nm];niis the rotational frequency [min-1].

For each operating point, the measurements shall be performed at least five times consecutively and the efficiency shall be calculated for each of those measurements () with j being the index referring to one set of measurements.

For each operating point, the average of those efficiencies () shall be calculated.

The efficiency of the 12V motor-generator (ηMG) [%] shall be calculated in accordance with Formula 2.



where,

is the average efficiency of the 12V motor-generator determined for operating point i [%]hiis the frequency of operating point i, as set out in Table 1.

3.  3.1. 
The difference (ΔPm) [W] between the saved mechanical power when using the 12V motor generator under real-world conditions (ΔPmRW) and the saved mechanical power when using the 12V motor under type-approval conditions (ΔPmTA) shall be calculated in accordance with Formula 3.



where,

ΔPmRW shall be calculated in accordance with Formula 4 and ΔPmTA in accordance with Formula 5.





where,

ηMGis the efficiency of the 12V motor-generator as determined in point 2 [%]PRWis the power requirement under ‘real-world’ conditions, which is 750 WPTAis the power requirement under ‘type-approval’ conditions, which is 350 WηBis the efficiency of the baseline alternator, which is 67 %
 3.2. 
The CO2 savings of the 12V motor-generator () [gCO2/km] shall be calculated in accordance with Formula 6.



where,

ΔPmis the difference between the saved mechanical power under real-world conditions and the saved mechanical power under type-approval conditions, as determined in point 3.1vis the mean driving speed of the WLTP, which is 46,6 km/hVPeis the consumption of effective power as specified in Table 2 [l/kWh]CFis the conversion factor as set out in Table 3 [gCO2/l]


Type of engine Consumption of effective power (VPe) [l/kWh]
Petrol- or E85-fuelled other than turbo-charged 0,264
Turbo-charged petrol- or E85-fuelled 0,280
Diesel-fuelled 0,220
LPG fuelled 0,342
Turbo-charged LPG-fuelled 0,363
 Consumption of effective power (VPe) [m3/kWh]
CNG (G20) other than turbo-charged 0,259
Turbo-charged CNG (G20) 0,275


Type of fuel Conversion factor (CF) [gCO2/l]
Petrol/E85 2 330
Diesel 2 640
LPG 1 629
 Conversion factor (CF) [gCO2/m3]
CNG (G20) 1 795
 3.3. 
The uncertainty of the CO2 savings calculated in accordance with point 3.2 shall be quantified as follows.

First, the standard deviation of the efficiency of the 12V motor-generator at each operating point () [%] shall be calculated in accordance with Formula 7.



where,

mis the number of measurements j undertaken for determining the 12V motor-generator efficiency at each operating point i, as referred to in point 2is the efficiency of the 12V motor-generator calculated for an individual measurement j at operating point i as referred to in point 2 [%]is the average efficiency of the 12V motor-generator calculated for an operating point i, as determined in point 2 [%]

Next, the standard deviation of the efficiency of the 12V motor-generator () [%] shall be calculated in accordance with Formula 8.



where,

is as determined by Formula 7 [%]hiis the frequency of operating point i, as set out in Table 1.

Finally, the uncertainty of the CO2 savings () [gCO2/km] of the 12V motor-generator shall be calculated in accordance with Formula 9 and shall not exceed 30 % of the CO2 savings.



where,

PRWis the power requirement under ‘real-world’ conditions, which is 750 WPTAis the power requirement under type-approval conditions, which is 350 WηMGis the efficiency of the 12V motor-generator, as determined in point 2 [%]VPeis the consumption of effective power as specified in Table 2 [l/kWh]CFis the fuel conversion factor as specified in Table 3 [gCO2/l]vis the mean driving speed of the WLTP, which is 46,6 km/his standard deviation of the efficiency of the 12V motor-generator as determined in accordance with Formula 8 [%]ηMGis the efficiency of the 12V motor-generator, as determined in point 2 [%]
 3.4. 
The CO2 savings () calculated in accordance with point 3.2 and the uncertainty of the CO2 savings () calculated in accordance with point 3.3 shall be rounded to a maximum of two decimal places.

Each value used in the calculation of the CO2 savings can be applied unrounded or must be rounded to the minimum number of decimal places which allows the maximum total impact (i.e. combined impact of all rounded values) on the savings to be lower than 0,25 gCO2/km.
 3.5. 
The type-approval authority shall ensure for each vehicle version fitted with the 12V motor-generator that the minimum threshold criterion as specified in Article 9(1)(b) of Implementing Regulations (EU) No 725/2011 and (EU) No 427/2014 is met.

When verifying whether the minimum threshold criterion is met, the type-approval authority shall take into account, in accordance with Formula 10, the CO2 savings determined in point 3.2, the uncertainty determined in point 3.3 and, where applicable, a CO2 correction, in the case of a positive mass difference (Δm) between the 12V motor-generator and the baseline alternator.

For the purpose of the positive mass correction, the mass of the baseline alternator shall be set to 7 kg.

The manufacturer shall provide to the type approval authority information on the mass of the 12V motor-generator as certified by the supplier.



where,

MTis 0,5 gCO2/km as specified in Article 9(1)(b) of Implementing Regulations (EU) No 725/2011 and (EU) No 427/2014is the CO2 savings as determined in point 3.2 [gCO2/km]uncertainty of the CO2 savings as determined in point 3.3 [gCO2/km]CO2 correction, in the case of a positive mass difference (Δm) [kg] between the 12V motor-generator and the baseline alternator, calculated in accordance with Table 4 [gCO2/km]


Type of fuel CO2 correction () [gCO2/km]
Petrol/E85 0,0277 • Δm
Diesel 0,0383 • Δm
LPG 0,0251 • Δm
CNG 0,0209 • Δm

4. 
The CO2 savings to be certified by the type-approval authority in accordance with Article 11 of Implementing Regulations (EU) No 725/2011 or (EU) No 427/2014 () [gCO2/km] are those calculated in accordance with Formula 11. The CO2 savings shall be recorded in the type approval certificate for each vehicle version fitted with the 12V motor-generator.



where,

is the CO2 savings as determined in accordance with Formula 6 under point 3.2 [gCO2/km]is the uncertainty of the CO2 savings of the 12V motor-generator calculated in accordance with Formula 9 under point 3.3 [gCO2/km]
