EN
L 212/192
Official Journal of the European Union
12.8.2022
PART B: Determination of the brake specific pollutant emissions The engine power is calculated from the measured signals for engine speed and engine torque as follows:
Peng;mðtÞ ¼
2 · π · nengðtÞ · T eng;mðtÞ 60000
where: Peng,m
= measured engine power in the verification test[kW]
t
= time node [s]
neng
= measured rotational engine speed [rpm]
Teng
= measured engine torque [Nm]
The positive engine work measured in the verification test is calculated as follows:
W eng;pos;m ¼
tend X max ðPeng;mðtÞ ; 0Þ tstart
3600 · fs
Weng,pos,m = positive engine work measured in the verification test [kWh] fs
= sampling rate = 2 [Hz]
tstart
= first time stamp in the processed measurement data in accordance with Table 4 [s]
tend
= last time stamp in the processed measurement data in accordance with Table 4 [s]
The brake specific pollutant emissions measured in the verification test BSEM are calculated as follows:
BSEM ¼
Ptend
tstart
EMðtÞ
W eng;pos;m · fs
where: BSEM = brake specific pollutant emissions measured in the verification test [g/kWh] EM
= instantaneous pollutant emission mass flow measured during the verification test [g/s]
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(*) Council Directive 96/53/EC of 25 July 1996 laying down for certain road vehicles circulating within the Community the maximum authorized dimensions in national and international traffic and the maximum authorized weights in international traffic (OJ L 235, 17.9.96, p. 59).
(**) Only if this component needs to be measured in accordance with point 1 of Appendix 1 to Annex II to Regulation (EU) 582/2011.
(***) For positive ignition engines.’.