10.11.2022
EN
Official Journal of the European Union
L 290/399
ANNEX B6B
Correction of CO2 results against the target speed and distance This annex is only applicable for Level 1A; 1.
General This Annex B6b defines the specific provisions regarding the correction of CO2 test results for tolerances against the target speed and distance.
This Annex B6b applies to pure ICE vehicles only.
2.
Vehicle speed measurement
2.1.
The actual/measured vehicle speed (vmi; km/h) coming from the roller speed of the chassis dynamometer shall be sampled with a measurement frequency of 10 Hz together with the actual time that corresponds to the actual speed.
2.2.
The target speed (vi; km/h) between time points in Tables A1/1 to A1/12 in Annex B1 shall be determined by a linear interpolation method at a frequency of 10 Hz.
3.
Correction procedure
3.1.
Calculation of the actual/measured and target power at the wheels The power and the forces at the wheels from the target and actual/measured speed shall be calculated by applying the following equations:
Fi ¼ f 0 þ f 1 Ü
ðVi þ ViÄ1 Þ ðVi þ ViÄ1 Þ2 þ f2 Ü þ ðTM þ mr Þ Ü ai 2 4
Pi ¼ F i Ü
Fmi ¼ f 0 þ f 1 Ü
ðVi þ ViÄ1 Þ Ü 0,001 3,6 Ü 2
ðVmi þ VmiÄ1 Þ ðVmi þ VmiÄ1 Þ2 þ ðTM þ mr Þ Ü ami þ f2 Ü 4 2
Pmi ¼ Fmi Ü
ðVmi þ VmiÄ1 Þ Ü 0,001 3,6 Ü 2
ai ¼
ðVi Ä ViÄ1 Þ 3,6 Ü ðti Ä tiÄ1 Þ
ami ¼
ðVmi Ä VmiÄ1 Þ 3,6 Ü ðti Ä tiÄ1 Þ