EN
10.5.2022
Official Journal of the European Union
L 133/39
The power consumption of the innovative technology [Peco] shall be determined in accordance with Formula 4: Formula 4
Where: Peco:
Power consumption of the innovative technology [W] :
Arithmetic mean of the baseline technology power consumption as determined under point 2.1 [W] Average value, across all WLTC drives performed, of the earliest time after the start of the WLTC drive when the smart diesel fuel heater would be deactivated [s]
: UPS:
Pressure sensor supply voltage [V]
IPS:
Pressure sensor supply current intensity [A]
In case the diesel fuel heater is turned off by default at the start of each WLTC drive, the value becomes Peco = UPS.
IPS
will be zero and Formula 4
3.
CALCULATION OF THE CO2 SAVINGS
The CO2 savings of the innovative technology shall be calculated in accordance with Formula 5: Formula 5
Where: CFD:
Conversion factor, which is 2 640 for diesel [gCO2/l] :
Power consumption of the baseline technology as determined in point 2.1 [W]
Peco:
Power consumption of the innovative technology as determined in point 2.2 [W]
UF:
Usage Factor, which is 0,2
v:
Mean driving speed of the WLTC, which is 46,5 [km/h]
VPe_D:
Consumption of effective power, which is 0,220 for diesel [l/kWh]
ηA:
Efficiency of the alternator, which is 0,67 (1) 4.
CALCULATION OF THE UNCERTAINTY OF THE CO2 SAVINGS
The uncertainty of the CO2 savings shall be determined as follows.
The standard deviation of the baseline technology power consumption Formula 6:
shall be calculated in accordance with
(1) In case an efficient 12V alternator, 12V motor-generator or 48V motor-generator plus 48V/12V DC/DC converter is applied, which has been approved as an eco-innovation in accordance with Commission Implementing Decision (EU) 2020/174, (EU) 2020/1232, (EU) 2020/1167 or (EU) 2021/488, the type-approval authority shall use the alternator efficiency determined in accordance with that Decision.