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 vehicle 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).