Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:23:p7
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 23 (pt 7/15)
Character Range: 1916155–1919283

ageing is conducted following the SDBC. The SDBC shall be run for the period of time calculated from the BAD equation. The SDBC is described in Appendix 2 to this annex.

              2.3.2.3. Regeneration data. Regeneration intervals shall be measured during at least 10 full cycles of the SRC cycle as described in Appendix 3 to this annex. As an alternative the intervals from the Ki determination may be used.

                If applicable, desulphurisation intervals shall also be considered based on manufacturer's data.

              2.3.2.4. Diesel bench ageing duration. Bench ageing duration is calculated using the BAD equation as follows:

                Bench ageing duration = number of regeneration and/or desulphurisation cycles (whichever is the longer) equivalent to 160,000 km of driving.

              2.3.2.5. Ageing bench. The ageing bench shall follow the SDBC and deliver appropriate exhaust flow, exhaust constituents, and exhaust temperature to the after-treatment system inlet.

                The manufacturer shall record the number of regenerations/desulphurisations (if applicable) to assure that sufficient ageing has actually occurred.

              2.3.2.6. Required testing. For calculating deterioration factors at least two Type 1 tests before bench ageing of the emission control hardware and at least two Type 1 tests after the bench-aged emission hardware is reinstalled have to be performed on VH. Additional testing may be conducted by the manufacturer. Calculation of the deterioration factors shall be done according to the calculation method set out in paragraph 7. of this annex and with the additional requirements contained in this Regulation.

              3. Test vehicle

              3.1. The vehicle shall be VH. It shall be in good mechanical order; the engine and the anti-pollution devices shall be new. The vehicle may be the same as that presented for the Type 1 test; in this case the Type 1 test has to be done after the vehicle has run at least 3,000 km of the ageing cycle of Appendix 3 or Appendix 3b (as applicable) to this annex.

              3.1.1. Special requirements for hybrid vehicles are provided in Appendix 4 to this annex.

              4. Fuel

               The durability test is conducted with a suitable commercially available fuel.

              5. Vehicle maintenance and adjustments

               Maintenance, adjustments as well as the use of the test vehicle's controls shall be those recommended by the manufacturer. If during the execution of the whole vehicle durability test the vehicle experiences a failure not related to emissions and/or fuel consumption and/or energy consumption, the manufacturer can fix the vehicle and continue with the durability test. Otherwise the manufacturer shall consult the approval authority to find a commonly agreed solution.

              6. Vehicle operation on track, road or on chassis dynamometer

              6.1. Operating cycle

               During operation on track, road or on roller test bench, the distance shall be covered according to the driving schedule described in