Document ID: chunk:federal_register_of_legislation:F2024L00446:front:0:p38
Version: federal_register_of_legislation:F2024L00446
Segment Type: other
Provision Reference: 
Character Range: 122221–125648

3,000)
       where :
A 0.11 for CO, 0.12 for NMHC, 0.21 for NOx and 0.00 for PM and PN.
6.7.3. This paragraph is applicable for Level 1A only
              At the request of the manufacturer, the Technical Service may carry out the Type 1 test before the Type 5 test has been completed using the deterioration factors in the table above. On completion of the Type 5 test, the Type Approval Authority may then amend the type approval results recorded in Annex A2 to this Regulation by replacing the deterioration factors in the above table with those measured in the Type 5 test.

              6.7.4. Deterioration factors are determined using one of the procedures specified in paragraph 1.1. of Annex C4 (as applicable). The factors are used to establish compliance with the requirements of paragraphs 6.3. and 8.2.

              6.7.5. Durability family

              Only vehicles whose engine or pollution control system parameters are identical or remain within the prescribed tolerances with reference to the vehicle used for the determination of the Deterioration Factor may be part of the same Durability family:

              (a) Engine

                     (i) Ratio between engine cylinder capacity and the volume of each catalytic component and/or filter (-10 to +5 per cent);

                     (ii) Difference in engine capacity within either ±15 per cent of the capacity of the tested vehicle or ± 820 cm3 whichever value presents the least difference;

                     (iii) Cylinder configuration (number of cylinders, shape, distance between bores and other configurations);

                     (iv) Number of valves, control of valves, and camshaft driven method;

                     (v) Fuel type and fuel system,

                     (vi) Combustion process.

              (b) Pollution control system parameters:

                     (i) Catalytic converters and particulate filters:

                     number and layout of catalytic converters, filters and elements,

                     type of catalytic activity (oxidizing, three-way, lean NOx trap, SCR, lean NOx catalyst or other), and filtering characteristics;

                     precious metal load (identical or higher),

                     precious metal type and ratio (± 15 per cent),

                     substrate (structure and material),

                     cell density.

                     (ii) Air injection:

                     with or without

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

                     (iii) EGR:

                     with or without

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

                     (iv) other devices having an influence on durability.

              6.8. On-board diagnostics OBD – Test

              This test shall be carried out on vehicle types as indicated in Table A. The test procedure described in paragraph 3. of Annex C5 to this Regulation shall be followed.

6.8.1. OBD family
6.8.1.1. Parameters defining the OBD family
The OBD family means a manufacturer's grouping of vehicles which, through their design, are expected to have similar exhaust emission and OBD system characteristics. Each engine of this family shall comply with the requirements of this Regulation.
The OBD family may be defined by basic design parameters which shall be common