10.11.2022
3.2.1.1.1.
EN
Official Journal of the European Union
L 290/411
The dilution factor DF shall be calculated using the equation for the concerned fuel (as applicable): DF ¼
13:4 CCO2 þ ðCHC þ CCO Þ Ü 10Ä4
for petrol (E10) and diesel (B0)
DF ¼
13:5 CCO2 þ ðCHC þ CCO Þ Ü 10Ä4
for petrol (E0)
DF ¼
13:5 CCO2 þ ðCHC þ CCO Þ Ü 10Ä4
for diesel (B7)
DF ¼
11:9 CCO2 þ ðCHC þ CCO Þ Ü 10Ä4
for LPG
DF ¼
9:5 CCO2 þ ðCHC þ CCO Þ 10Ä4
for NG/biomethane
DF ¼
12:5 CCO2 þ ðCHC þ CCO Þ Ü 10Ä4
for ethanol (E85)
DF ¼
35:03 CH2O þ CH2OÄDA þ CH2 Ü 10Ä4
for hydrogen
With respect to the equation for hydrogen: CH2O
is the concentration of H2O in the diluted exhaust gas contained in the sample bag, per cent volume;
CH2O-DA
is the concentration of H2O in the dilution air, per cent volume;
CH2
is the concentration of H2 in the diluted exhaust gas contained in the sample bag, ppm.
If a fuel type is not listed in this paragraph, the DF for that fuel shall be calculated using the equations in paragraph 3.2.1.1.2. of this annex.
If the manufacturer uses a DF that covers several phases, it shall calculate a DF using the mean concentration of gaseous compounds for the phases concerned.
The mean concentration of a gaseous compound shall be calculated using the following equation:
Ci ¼
Pn
phase¼1 ðCi;phase Ü Vmix;phase Þ Pn phase¼1 Vmix;phase
where: Ci
is mean concentration of a gaseous compound;
C1,phase
is the concentration of each phase;
Vmix,phase
is the Vmix of the corresponding phase;
n
is the number of phases.