EN
L 290/402
3.8.
Official Journal of the European Union
Pm,j1
is the average actual/measured power of the considered phase j calculated using POVERRUN,1 , kW;
kv,1
is the slope of the Veline equation-1, g CO2/kWs;
Dv,1
is the constant of the Veline equation-1, g CO2/s.
10.11.2022
In the next step, a second POVERRUN,2 is calculated following the equation: POVERRUN,2 = - Dv,1/ kv,1 where:
3.9.
POVERRUN,2
is the second overrun power, kW;
kv,1
is the slope of the Veline equation-1, g CO2/kWs;
Dv,1
is the constant of the Veline equation-1, g CO2/s.
All calculated Pi and Pmi values from paragraph 3.1. of this Annex B6b that are below POVERRUN,2 shall be set to POVERRUN,2 in order to exclude negative values not relevant for the CO2 emissions.
3.10.
The Pm,j2 values shall be computed again for each individual phase of the WLTC using the equations from paragraph 3.4. of this Annex B6b. 3.11.
New vehicle specific Veline equation-2 shall be computed using the least square regression method described in paragraph 3.6. of this Annex B6b.
The Veline equation-2 is expressed with the following equation: MCO2,j = (kv,2 × Pm,j2) + Dv,2 where: MCO2,j
is the average CO2 emission of phase j, g/s;
Pm,j2
is the average actual/measured power of the considered phase j calculated using POVERRUN,2 , kW;
kv,2
is the slope of the Veline equation-2, g CO2/kWs;
Dv,2
is the constant of the Veline equation-2, g CO2/s.
3.12.
In the next step, the Pi,j values coming from the target speed profile shall be calculated for each individual phase of the WLTC using the following equation:
Pi;j2 ¼
Xt
end
t0
Pi;2 =n
where: Pi,j2
is the average target power of the considered phase j calculated using POVERRUN,2 , kW;
Pi,2
is the target power during the period from (i-1) to (i) calculated using POVERRUN,2 , kW;
t0
is the time at the beginning of the considered phase j, s;
tend
is the time at the end of the considered phase j, s;
n
is the number of time steps in the considered phase;
j
is the index number for the considered WLTC phase.