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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

Fuel | | NOx | CO | THC/NMHC | CO2 | CH4 Diesel | Exhaust raw | 0,001587 | 0,000966 | 0,000479 | 0,001518 | 0,000553 Exhaust dilute | 0,001588 | 0,000967 | 0,000480 | 0,001519 | 0,000553 Ethanol | Exhaust raw | 0,001609 | 0,000980 | 0,000805 | 0,001539 | 0,000561 Exhaust dilute | 0,001588 | 0,000967 | 0,000795 | 0,001519 | 0,000553 CNG | Exhaust raw | 0,001622 | 0,000987 | 0,000523 | 0,001552 | 0,000565 Exhaust dilute | 0,001588 | 0,000967 | 0,000584 | 0,001519 | 0,000553 Propane | Exhaust raw | 0,001603 | 0,000976 | 0,000511 | 0,001533 | 0,000559 Exhaust dilute | 0,001588 | 0,000967 | 0,000507 | 0,001519 | 0,000553 Butane | Exhaust raw | 0,001600 | 0,000974 | 0,000505 | 0,001530 | 0,000558 Exhaust dilute | 0,001588 | 0,000967 | 0,000501 | 0,001519 | 0,000553 Notes: — u values of raw exhaust based on ideal gas properties at λ = 2, dry air, 273 K, 101,3 kPa — u values of dilute exhaust based on ideal gas properties and density of air — u values of CNG accurate within 0,2 % for mass composition of: C = 66 – 76 %; H = 22 – 25 %; N = 0 – 12 % — u value of CNG for HC corresponds to CH2,93 (for total HC use u value of CH4).

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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.