Document ID: chunk:federal_register_of_legislation:F2024L00447:reg:1:p5
Version: federal_register_of_legislation:F2024L00447
Segment Type: reg
Provision Reference: reg 1 (pt 5/13)
Character Range: 62285–65264

offset shall be checked against applicable emission limits. If the final emissions are above the emission limits, then the test shall be invalid and repeated once. The completion of the regeneration and stabilisation, through approximately 1 hour of driving, shall be done prior to the start of the second test. The second test is considered valid even if regeneration occurs during it.

              Even if the final emission results fall below the applicable emission limits, the occurrence of regeneration may be verified as in paragraph 8.3.4.2. If the presence of regeneration can be proved and with the agreement of the Type Approval Authority, the final results shall be calculated without the application of either the Ki factor or the Ki offset.

              8.4. PEMS operational requirements

              The trip shall be selected in such a way that the testing is uninterrupted and the data continuously recorded to reach the minimum test duration defined in paragraph 9.3.3.

              Electrical power shall be supplied to the PEMS by an external power supply unit and not from a source that draws its energy either directly or indirectly from the engine of the test vehicle.

              The installation of the PEMS equipment shall be done in a way to minimise the influence on the vehicle's emissions or performance or both to the greatest extent possible. Care should be exercised to minimise the mass of the installed equipment and potential aerodynamic modifications of the test vehicle.

              During type approval, a validation test in the laboratory shall be performed before running an RDE test according to Annex 6. For OVC-HEV the applicable WLTP test shall be conducted in Charge Sustaining vehicle operation.

              8.5. Lubricating oil, fuel and reagent

              For the test performed during type approval, the fuel used for RDE testing shall be either the reference fuel defined in Annex B3 of UN Regulation No. 154 on WLTP or within the specifications issued by the manufacturer for vehicle operation by the customer. The reagent (where applicable) and lubricant used shall be within the specifications recommended or issued by the manufacturer.

              9.                                Test procedure
              9.1. Types of speed bins

              Urban speed bin (for both 3-phase and 4-phase analysis) is characterised by vehicle speeds lower than or equal to 60 km/h.

              Rural speed bin (for 4-phase analysis) is characterised by vehicle speeds higher than 60 km/h and lower than or equal to 90 km/h. For those vehicles that are equipped with a device permanently limiting vehicle speed to 90 km/h, rural speed bin is characterised by vehicle speed higher than 60 km/h and lower than or equal to 80 km/h.

              Motorway speed bin (for 4-phase analysis) is characterised by speeds above 90 km/h.

              For those vehicles that are equipped with a device permanently