Division 4.3.4 Assessment of the durability of emissions performance of a replacement pollution control device by use of a technology family aging factor

Where the manufacturer has identified a replacement pollution control technology family, the procedures described in point 4.3.2 may be used to determine the Aging Factors (AFs) for each pollutant for the parent of that family. The engine on which these tests are conducted shall have a minimum engine displacement of [0,75 dm³] per cylinder.