(a)

Commission Directive 2005/78/EC of 14 November 2005 implementing Directive 2005/55/EC of the European Parliament and of the Council on the approximation of the laws of the Member States relating to the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines for use in vehicles, and the emission of gaseous pollutants from positive ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles and amending Annexes I, II, III, IV and VI thereto (Text with EEA relevance) · European Union

Text of image mPT = mf msep × medf 1000 where: The total mass of equivalent diluted exhaust gas mass over the cycle shall be determined as follows: Text of image medf = i = n Σ i = 1 qmedf,i × 1 f Text of image qmedf,i = qmew,i × rd,i Text of image rd,i = qmdew,,i (qmdew,,i - qmdw,,i) where: m f | = | particulate mass sampled over the cycle, mg m sep | = | mass of diluted exhaust gas passing the particulate collection filters, kg m edf | = | mass of equivalent diluted exhaust gas over the cycle, kg q medf,i | = | instantaneous equivalent diluted exhaust mass flow rate, kg/s q mew,i | = | instantaneous exhaust mass flow rate, kg/s r d,i | = | instantaneous dilution ratio q mdew,i | = | instantaneous diluted exhaust mass flow rate through dilution tunnel, kg/s q mdw,i | = | instantaneous dilution air mass flow rate, kg/s f | = | data sampling rate, Hz n | = | number of measurements

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Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.