Division 3.3.1.3

Pollution control system parameters:

1. (a)

   Catalytic converters and particulate filters:

   number of catalytic converters, filters and elements,

   size of catalytic converters and filters (volume of monolith ± 10 %),

   type of catalytic activity (oxidizing, three-way, lean NO_x trap, SCR, lean NO_x catalyst or other),

   precious metal load (identical or higher),

   precious metal type and ratio (± 15 %),

   substrate (structure and material),

   cell density,

   temperature variation of no more than 50 K at the inlet of the catalytic converter or filter. This temperature variation shall be checked under stabilized conditions at a speed of 120 km/h and the load setting of the type 1 test.

2. (b)

   Air injection:

   with or without

   type (pulsair, air pumps, other(s))

3. (c)

   EGR:

   with or without

   type (cooled or non cooled, active or passive control, high pressure or low pressure).