Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:9:p33
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 9 (pt 33/37)
Character Range: 1869921–1872909

and refill
              The fuel tank of the vehicle shall be emptied. This shall be done so as not to abnormally purge or abnormally load the evaporative control devices fitted to the vehicle. Removal of the fuel cap is normally sufficient to achieve this. The fuel tank shall be refilled with reference fuel at a temperature of 18 °C ±2 °C to 40 ±2 per cent of its nominal capacity.
              6.5.2. Soak
              Within 5 minutes after completing the fuel drain and refill, the vehicle shall be soaked for a minimum of 6 hours and a maximum of 36 hours at 23 °C ±3 °C.
              6.5.3. Preconditioning drive
              The vehicle shall be placed on a chassis dynamometer and driven over the following phases of the cycle described in Annex B1:
                  (a) For Class 1 vehicles:
                  low, medium, low, low, medium, low
                  (b) For Class 2 and 3 vehicles: low, medium, high, medium.
              For OVC-HEVs, the preconditioning drive shall be performed under the charge-sustaining operating condition as defined in paragraph 3.3.6. of this Regulation. Upon the request of responsible authority, any other mode may be used.
              6.5.4. Fuel drain and refill
              Within one hour after the preconditioning drive, the fuel tank of the vehicle shall be emptied. This shall be done so as not to abnormally purge or abnormally load the evaporative control devices fitted to the vehicle. Removal of the fuel cap is normally sufficient to achieve this. The fuel tank shall be refilled with test fuel at a temperature of 18 °C ±2 °C to 40 ±2 per cent of its nominal capacity.
              6.5.5. Soak
              Within five minutes of completing fuel drain and refill, the vehicle shall be parked for a minimum of 12 hours and a maximum of 36 hours at 23 °C ±3 °C.
              During soaking, the procedures described in paragraphs 6.5.5.1. and 6.5.5.2. of this annex may be performed either in the order of first paragraph 6.5.5.1. followed by paragraph 6.5.5.2. or in the order paragraph 6.5.5.2. followed by paragraph 6.5.5.1. The procedures described in paragraphs 6.5.5.1. and 6.5.5.2. may also be performed simultaneously.

              6.5.5.1. REESS charge

              For OVC-HEVs, the REESS shall be fully charged according to the charging requirements described in paragraph 2.2.3. of Appendix 4 to Annex B8.
              6.5.5.2. Carbon canister loading
              The carbon canister aged according to the sequence described in paragraph 5.1. to 5.1.3.1.3. inclusive of this annex shall be loaded to 2 gram breakthrough according to the procedure described in paragraph 6.5.5.2.1. of this annex.
               One of the methods specified in paragraphs 6.5.5.3. and 6.5.5.4. of this annex shall be used to precondition the evaporative canister. For vehicles with multiple canisters, each canister shall be preconditioned separately.
              6.5.5.2.1. Canister emissions are measured to