Division 3.2.1 F1

For tests performed in accordance with Annex 6 to UN/ECE Regulation No 83 [1 day NEDC] or the Annex to Regulation (EC) No 2017/1221 [2 days NEDC] the type-approval shall be extended to vehicles equipped with a control system for evaporative emissions which meet the following conditions:

1. 3.2.1.1.

   The basic principle of fuel/air metering (e.g. single point injection) is the same.

2. 3.2.1.2.

   The shape of the fuel tank is identical and the material of the fuel tank and liquid fuel hoses are technically equivalent.

3. 3.2.1.3.

   The worst-case vehicle with regard to the cross-section and approximate hose length shall be tested. Whether non-identical vapour/liquid separators are acceptable is decided by the technical service responsible for the type-approval tests.

4. 3.2.1.4.

   The fuel tank volume is within a range of ± 10 %.

5. 3.2.1.5.

   The setting of the fuel tank relief valve is identical.

6. 3.2.1.6.

   The method of storage of the fuel vapour is identical, i.e. trap form and volume, storage medium, air cleaner (if used for evaporative emission control), etc.

7. 3.2.1.7.

   The method of purging of the stored vapour is identical (e.g. air flow, start point or purge volume over the preconditioning cycle).

8. 3.2.1.8.

   The method of sealing and venting of the fuel metering system is identical.