
Article 1 
The technology used in the SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter is approved as an innovative technology within the meaning of Article 12 of Regulation (EC) No 443/2009 provided the innovative technology is fitted in internal combustion engine powered M1 vehicles, or in hybrid M1 vehicles for which the conditions specified in point 6.3.2(2) or (3) of Annex 8 to UNECE Regulation 101 are fulfilled.
Article 2 
For the purpose of this Decision, 48V motor generator means a reversible machine that may operate as either an electric motor converting electrical energy into mechanical energy, or a generator converting mechanical energy into electrical energy as a standard alternator. This Decision focus on the generation function of the component.
Article 3 

1. A manufacturer may apply for certification of the CO2 savings from one or several SEG Automotive Germany GmbH High efficient 48V motor generators (BRM) plus 48V/12V DC/DC converters intended for use in M1 vehicles that comply with the conditions set out in Article 1.
2. An application for the certification of the savings from one or several SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter shall be accompanied by an independent verification report confirming that the CO2 savings threshold of 1 g CO2/km specified in Article 9 of Implementing Regulation (EU) No 725/2011 is met.
3. The type approval authority shall reject the application for certification if it finds that the motor generator plus converter or motor generators plus converters are fitted in vehicles that do not comply with the conditions set out in Article 1, or where the CO2 emission savings are below the threshold specified in Article 9(1) of Implementing Regulation (EU) No 725/2011.
Article 4 

1. The reduction in CO2 emissions from the use of a SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter shall be determined using one of the two methodologies set out in the Annex.
2. Where a manufacturer applies for the certification of the CO2 savings from more than one SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter in relation to one vehicle version, the type approval authority shall determine which of the motor generators plus converters tested delivers the lowest CO2 savings, and record those savings in the relevant type approval documentation. That value shall also be indicated in the certificate of conformity in accordance with Article 11(2) of Implementing Regulation (EU) No 725/2011.
3. The type approval authority shall record the verification report and the test results on the basis of which the savings were determined and shall make that information available to the Commission on request.
Article 5 
The eco-innovation code No 27 shall be entered into the type approval documentation where reference is made to this Decision in accordance with Article 11(1) of Implementing Regulation (EU) No 725/2011.
Article 6 
This Decision shall apply until 31 December 2020.
Article 7 
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, 21 February 2019.
For the Commission
The President
Jean-Claude JUNCKER
ANNEX
1. 
In order to determine the CO2 emission reductions that can be attributed to the use of the generation function of the SEG Automotive Germany GmbH High efficient 48V motor generator (BRM), hereinafter referred to as 48 V motor generator or motor generator, plus the 48V/12V DC/DC converter, for use in vehicles in compliance with the conditions set out in Article 1, it is necessary to specify the following:


((1)) The test conditions;
((2)) The test equipment;
((3)) The procedure to determine the total efficiency;
((4)) The procedure to determine the CO2 savings;
((5)) The procedure to determine the uncertainty of the CO2 savings.

Two alternative methods can be used to determine the CO2 savings. The methods are described as follows.

2. 
CCO2CO2 savings [g CO2/km]CO2Carbon dioxideCFConversion factor (l/100 km) - (g CO2/km) [gCO2/l] as defined in Table 3hFrequency as defined in Table 1iNumber of operating pointsICurrent intensity at which the measurement shall be carried out [A]lNumber of measurement of the sample for the 48V/12V DC/DC convertermNumber of measurement of the sample for the 48V motor generatorMTorque [Nm]nRotational frequency [min– 1] as defined in Table 1PPower [W]sηDCDC–Standard deviation of the 48V/12V DC/DC converter efficiency mean [%]sηMGStandard deviation of the 48V motor generator efficiency [%]sηMG–Standard deviation of the 48V motor generator efficiency mean [%]sηTOTStandard deviation of the total efficiency [%]sCCO2Standard deviation of the total CO2 savings [g CO2/km]UTest voltage at which the measurement shall be carried out [V]vMean driving speed of the New European Driving Cycle (NEDC) [km/h]VPeConsumption of effective power [l/kWh] as defined in Table 2

ΔDifferenceηBBaseline alternator efficiency [%]ηDCDC48V/12V DC/DC converter efficiency [%]ηDC∕DC–Mean of the 48V/12V DC/DC converter efficiency [%]ηMG48V motor generator efficiency [%]ηMGi–Mean of the 48V motor generator efficiency at operating point i [%]ηTOTTotal efficiency [%]

Index (i) refers to operating point

Index (j) refers to measurement of the sample

MGMotor generatormMechanicalRWReal-world conditionsTAType approval (NEDC) conditionsBBaseline

3.  3.1. 
The efficiency of the 48V motor generator shall be determined in accordance with ISO 8854:2012, with the exception of the elements specified in this section.

Evidence shall be provided to the type approval authority that the rotational frequency ranges of the efficient 48V motor generator are consistent with those set out in Table 1. The measurements shall be conducted at different operating points, as set out in Table 1. The efficient 48V motor generator current intensity shall be defined as half of the rated current for all operating points. For each rotational frequency, the voltage and the output current of the motor generator shall be kept constant, the voltage at 52V.


Operating pointi Holding time[s] Rotational frequencyni [min– 1] Frequencyhi
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 at each operating point shall be calculated in accordance with Formula 1:

Formula 1
ηMGi=60×Ui×Ii2π×Mi×ni×100
All efficiency measurements are to be performed consecutively at least five (5) times. The average of the measurements at each operating point (ηMGi–) shall be calculated.

The efficiency of the generation function (ηMG) shall be calculated in accordance with the following Formula 2:

Formula 2
ηMG=∑i=14 hi×ηMGi– 3.2. 
The efficiency of the 48V/12V DC/DC converter shall be determined under the following conditions:


— Output voltage of 14,3V
— Output current of nominal power of the 48V/12V DC/DC converter divided by 14,3V

The nominal power of the 48V/12V DC/DC converter shall be the continuous output power at the 12V side guaranteed by the manufacturer of the DC/DC converter at the conditions specified in the ISO 8854:2012.

The efficiency of the 48V/12V DC/DC converter shall be measured at least five (5) times consecutively. The average of all the measurements (ηDC∕DC–) shall be calculated and used for the calculations laid down in paragraph 3.3.
 3.3. 
The total efficiency of the 48 V motor generator plus the 48V/12V DC/DC converter shall be calculated using Formula 3:

Formula 3
ηTOT=ηMG×ηDC∕DC–
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 NEDC conditions (ΔPmTA) as set out in Formula 4.

Formula 4

ΔPm = ΔPmRW – ΔPmTA

Where the saved mechanical power under real-world conditions (ΔPmRW) shall be calculated in accordance with Formula 5 and the saved mechanical power under type-approval NEDC conditions (ΔPmTA) in accordance with Formula 6:


 Formula 5
ΔPmRW=PRWηB−PRWηTOT
 Formula 6
ΔPmTA=PTAηB−PTAηTOT

where

PRWPower requirement under ‘real-world’ conditions [W], which is estimated at 750WPTAPower requirement under NEDC type-approval conditions [W], which is estimated at 350WηBEfficiency of the baseline alternator [%], which is 67 %
 3.4. 
The CO2 savings of the 48 V motor generator plus the 48V/12V DC/DC converter shall be calculated in accordance with Formula 7:

Formula 7
CCO2=ΔPm×VPe×CFv
Where:

vMean driving speed of the NEDC [km/h], which is 33,58 km/hVPeConsumption of effective power specified in Table 2:
Type of engine Consumption of effective power (VPe)[l/kWh]
Petrol 0,264
Petrol Turbo 0,280
Diesel 0,220CFConversion factor (l/100 km) - (g CO2/km) [gCO2/l] as defined in Table 3
Type of fuel Conversion factor (l/100 km) - (g CO2/km) (CF)[gCO2/l]
Petrol 2 330
Diesel 2 640
 3.5. 
The statistical margin of the results of the testing methodology caused by the measurements shall be quantified. For each operating point the standard deviation shall be calculated in accordance with Formula 8:

Formula 8
sηMGi–=sηMGim=∑mj=1ηMGij−ηMGi–2mm−1
The standard deviation of the efficiency value of the efficient 48V motor generator (sηMG) shall be calculated in accordance with Formula 9:

Formula 9
sηMG=∑i=14hi×sηMGi–2
The standard deviation of the efficiency value of the 48V/12V DC/DC converter (sηDC∕DC–) shall be calculated in accordance with Formula 10:

Formula 10
sηDC∕DC–=∑1j=1ηDC∕DCij−ηDC∕DCi–2ll−1
The standard deviation of the motor generator efficiency (sηMG) and of the 48V/12V DC/DC converter (sηDC∕DC–) lead to an uncertainty in the CO2 savings (sCCO2). That uncertainty is calculated in accordance with Formula 11:

Formula 11
sCCO2=PRW−PTAηTOT×VPe×CFv×sηMGηMG2+sηDC∕DC–ηDC∕DC–2
4.  4.1. 
The efficiency of the 48V motor generator plus the 48V/12V DC/DC converter shall be determined in accordance with ISO 8854:2012, with the exception of the elements specified in this section.

Evidence shall be provided to the type approval authority that the speed ranges of the efficient 48V motor generator are consistent with those set out in Table 1.

The measurements shall be conducted at different operating points, as set out in Table 1. The efficient 48V motor generator plus the 48V/12V DC/DC converter current intensity shall be defined as half of the rated current of the 48V/12V DC/DC converter for all operating points.

The rated current of the 48V/12V DC/DC converter is defined as the output nominal power of the 48V/12V DC/DC converter divided by 14,3V. The nominal power of the 48V/12V DC/DC converter shall be the continuous output power at the 12V side guaranteed by the manufacturer of the DC/DC converter at the conditions specified in the ISO 8854:2012.

For each speed the voltage and the output current of the motor generator shall be kept constant, the voltage at 52 V.

The efficiency at each operating point shall be calculated in accordance with Formula 12:

Formula 12
ηTOTi=60×Ui×Ii2π×Mi×ni×100
All efficiency measurements are to be performed consecutively at least five (5) times. The average of the measurements at each operating point (ηTOTi–) shall be calculated.

The efficiency of the generation function (ηTOT) shall be calculated in accordance with Formula 13:

Formula 13
ηTOT=∑i=14 hi×ηTOTi–
The measurement set up has to allow the measurement of the 48V motor generation efficiency alone.
 4.2. 
In order to use the procedure specified in 4.1 for the determination of ηTOT, it has to be demonstrated that the efficiency of the 48V motor generator alone obtained with the conditions specified in 4.1 is lower than the efficiency obtained with the conditions specified in 3.1.
 4.3. 
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
ΔPmRW=PRWηB−PRWηTOT
 Formula 16
ΔPmTA=PTAηB−PTAηTOT

where

PRWPower requirement under ‘real-world’ conditions [W], which is estimated at 750WPTAPower requirement under type-approval NEDC conditions [W], which is estimated at 350WηBEfficiency of the baseline alternator [%], which is 67 %
 4.4. 
The CO2 savings of the 48 V motor generator plus the 48V/12V DC/DC converter shall be calculated in accordance with Formula 17:

Formula 17
CCO2=ΔPm×VPe×CFv
Where:

vMean driving speed of the NEDC [km/h], which is 33,58 km/hVPeConsumption of effective power specified in Table 2CFConversion factor (l/100 km) - (g CO2/km) [gCO2/l] as defined in Table 3
 4.5. 
The statistical margin of the results of the testing methodology caused by the measurements shall be quantified. For each operating point the standard deviation shall be calculated in accordance with Formula 18:

Formula 18
sηTOTi–=sηTOTim=∑mj=1ηTOTij−ηTOTi–2mm−1
The standard deviation of the efficiency value of the efficient 48V motor generator plus the 48V/12V DC/DC converter (sηTOT) shall be calculated in accordance with Formula 19:

Formula 19
sηTOT=∑i=14hi×sηTOTi–2
The standard deviation of the motor generator and of the 48V/12V DC/DC converter efficiency leads to an uncertainty in the CO2 savings (sCCO2). That uncertainty is calculated in accordance with Formula 20:

Formula 20
sCCO2=PRW−PTAηTOT2×VPe×CFv×sηTOT
5. 
The calculated CO2 savings value (CCO2) and the statistical margin of the CO2 saving (sCCO2) must 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.

6. 
It shall be demonstrated for each type, variant and version of a vehicle fitted with the efficient 48V motor generator that the uncertainty of the CO2 savings calculated in accordance with Formula 7 or Formula 17 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 and Commission Implementing Regulation (EU) No 427/2014 (see Formula 21).

Formula 21

MT<CCO2−sCCO2−ΔCO2m

Where:

MTminimum threshold [g CO2/km]CCO2total CO2 saving [g CO2/km]sCCO2standard deviation of the total CO2 saving [gCO2/km]ΔCO2mCO2 correction coefficient due to the positive mass difference between the efficient 48V motor generator plus 48V/12V DC-DC converter and the baseline alternator. For ΔCO2m the data in Table 4 is to be used.
Type of fuel CO2 correction coefficient due to the positive mass difference (ΔCO2m)[g CO2/km]
Petrol 0,0277 · Δm
Diesel 0,0383 · Δm

Δm (in Table 4) is the extra mass due to the installation of the 48V motor generator and the 48V/12V DC-DC converter. It is the positive difference between the mass of the 48V motor generator plus the 48V/12V DC-DC converter 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.
