Commission Regulation (EU) No 582/2011Dangos y teitl llawn

Commission Regulation (EU) No 582/2011 of 25 May 2011 implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council (Text with EEA relevance)

3.1. Raw measurement U.K.

This Section shall apply, if CO2 is measured in the raw exhaust gas.

3.1.1. Measurement U.K.

CO2 in the raw exhaust gas emitted by the engine submitted for testing shall be measured with a non-dispersive infrared (NDIR) analyser in accordance with Section 9.3.2.3 and Appendix 3 to Annex 4B to UN/ECE Regulation No 49.

The measurement system shall meet the linearity requirements of Section 9.2 and Table 7of Annex 4B to UN/ECE Regulation No 49.

The measurement system shall meet the requirements of Sections 9.3.1, 9.3.4 and 9.3.5 of Annex 4B to UN/ECE Regulation No 49.

3.1.2. Data evaluation U.K.

The relevant data shall be recorded and stored in accordance with Section 7.6.6 of Annex 4B to UN/ECE Regulation No 49. The traces of the recorded concentrations and the trace of the exhaust gas mass flow rate shall be time aligned with the transformation time as defined in Section 3.1.30 of Annex 4B to UN/ECE Regulation No 49.

3.1.3. Calculation of cycle averaged emission U.K.

If measured on a dry basis, the dry/wet correction according to Section 8.1 of Annex 4B to UN/ECE Regulation No 49 shall be applied to the instantaneous concentration values before any further calculation is done.

The mass of CO2 (g/test) shall be determined by calculating the instantaneous mass emissions from the raw CO2 concentration and the exhaust gas mass flow, aligned with respect to their transformation times as determined in accordance with Section 8.4.2.2 of Annex 4B to UN/ECE Regulation No 49, integrating the instantaneous values over the cycle, and multiplying the integrated value with the u values of CO2 from Table 5 of Annex 4B to UN/ECE Regulation No 49.

The following equation shall be applied:

(in g/test)

where:

u CO2

is the ratio between CO2 density and density of the exhaust gas

c CO2,i

is the instantaneous CO2 concentration in the exhaust gas, ppm

q mew,i

is the instantaneous exhaust mass flow, kg/s

f

is the data sampling rate, Hz

n

is the number of measurements

Optionally, the CO2 mass may be calculated in accordance with Section 8.4.2.4 of Annex 4B to UN/ECE Regulation No 49 by using a CO2 molar mass (M CO2) of 44,01 g/mol.