COMMISSION IMPLEMENTING DECISION (EU) 2020/174
of 6 February 2020
on the approval of the technology used in 12 Volt efficient alternators 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)
Article 1
Innovative technology
Article 2
Application for certification of CO
2
savings
Article 3
Certification of CO
2
savings
Article 4
Eco-innovation code
Article 5
Entry into force
ANNEX
Methodology to determine the CO
2
savings of a 12 V efficient alternator in passenger cars and light commercial vehicles with internal combustion engine powertrain (fulfilling the conditions specified in Article 1 by reference to the Worldwide Harmonized Light Vehicle Test Procedure)
1. INTRODUCTION
2. SYMBOLS, PARAMETERS AND UNITS
Latin symbols
[Bild bitte in Originalquelle ansehen] |
- |
CO2 savings [g CO2/km] |
CO2 |
- |
Carbon dioxide |
CF |
- |
Conversion factor (l/100 km) - (g CO2/km) [gCO2/l] 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] |
sηEI |
- |
Standard deviation of the eco-innovative alternator efficiency [%] |
[Bild bitte in Originalquelle ansehen] |
- |
Standard deviation of the eco-innovative alternator efficiency mean [%] |
[Bild bitte in Originalquelle ansehen] |
- |
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 Worldwide harmonised Light-duty vehicles Test Cycle (WLTC) [km/h] |
VPe |
- |
Consumption of effective power [l/kWh] as defined in Table 2 |
[Bild bitte in Originalquelle ansehen] |
- |
Sensitivity of calculated CO2 savings related to the efficiency of the eco-innovative alternator |
Greek symbols
Δ |
- |
Difference |
η |
- |
Baseline alternator efficiency [%] |
ηEI |
- |
Efficient alternator efficiency [%] |
[Bild bitte in Originalquelle ansehen] |
- |
Mean of the eco-innovative alternator efficiency at operating point i [%] |
Subscripts
EI |
- |
Eco-innovative |
m |
- |
Mechanical |
RW |
- |
Real-world conditions |
TA |
- |
Type-approval conditions |
B |
- |
Baseline |
3. TEST CONDITIONS
4. TEST EQUIPMENT
5. MEASUREMENTS AND DETERMINATION OF THE EFFICIENCY
Operating point i |
Holding time [s] |
Rotational frequency ni [min-1] |
Frequency hi |
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 |
6. CALCULATION OF THE CO
2
SAVINGS
Type of engine |
Consumption of effective power (VPe) [l/kWh] |
Petrol |
0,264 |
Petrol Turbo |
0,280 |
Diesel |
0,220 |
Type of fuel |
Conversion factor (l/100 km) - (g CO2/km) (CF) [gCO2/l] |
Petrol |
2 330 |
Diesel |
2 640 |
7. CALCULATION OF THE STATISTICAL ERROR
8. STATISTICAL SIGNIFICANCE
CO2 correction coefficient due to the extra mass |
|
Petrol ( [Bild bitte in Originalquelle ansehen] ) [g CO2/km kg] |
0,0277•Δm |
Diesel ( [Bild bitte in Originalquelle ansehen] ) [g CO2/km kg] |
0,0383•Δm |