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Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of the Member States relating to measures to be taken against air pollution by gases from positive-ignition engines of motor vehicles · European Union

TEST METHOD 3.1. In each of the sets of conditions 1, 2 and 3 specified in item 2.2 above, the following shall be measured: 3.1.1. The volume Qn not recycled by the device in the unit time; 3.1.2. The consumption by weight Cn of fuel in the same unit time. 3.2. The volumes Qn, measured as specified in item 4.6 in each of the sets of conditions, shall be referred to the standard conditions (760 mm mercury ; 0 ºC) by the formula >PIC FILE= "T0002132"> 3.3. The content by volume of hydrocarbons, t, shall be measured as specified in item 4.4. If the manufacturer so requests, the crankcase gases shall not be analysed but shall be assumed to contain 15000 ppm of hydrocarbons. 3.4. The volume mass (weight per unit volume) of hydrocarbons shall be assumed to be 3 7 84 g/litre ; for each of the aforementioned sets of conditions the weight of hydrocarbons discharged to the atmosphere shall be determined by the formula: Pn = Q'n × t × 3 784, Q'n being the corrected volumes. >PIC FILE= "T0002133">

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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.