Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p140
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 140/150)
Character Range: 1114405–1117898

in the histogram. Each bar of the histogram shall represent the cumulated frequency in seconds of the measured temperatures falling in the specific bin.

              2.2.12. The time in hours corresponding to each temperature bin must be determined and then extrapolated to the useful life of the replacement pollution control device, in accordance with the values specified in Table 1. The extrapolation shall be based on the assumption that one WHTC cycle corresponds to 20 km driving.

Table 1
Useful life of the replacement pollution control device for each vehicle category, and equivalent WHTC test-cycles and hours of operation
Vehicle category                                                                                                                                                                                                                             Mileage (km)  Equivalent number of WHTC test-cycles  Equivalent number of hours
Engine systems fitted to vehicles of category M1, N1 and N2                                                                                                                                                                                  114 286       5 714                                  2 857
Engine systems fitted to vehicles of category N2, N3 with a maximum technically permissible mass not exceeding 16 tonnes and M3 Class I, Class II and Class A, and Class B with a maximum technically permissible mass exceeding 7.5 tonnes  214 286       10 714                                 5 357
Engine systems fitted to vehicles of category N3 with a maximum technically permissible mass exceeding 16 tonnes, and M3, Class III and Class B with a maximum technically permissible mass exceeding 7.5 tonnes                             500 000       25 000                                 12 500

2.2.13. It is allowed to perform the data collection phase for different devices at the same time.
              2.2.14. In the case of systems operating in the presence of active regeneration, the number, length and temperatures of the regenerations occurring during the test sequence defined in paragraphs 2.2.1. and 2.2.2. shall be recorded. If no active regeneration has occurred, the hot sequence defined in paragraph 2.2.2. shall be extended in order to include at least two active regenerations.

              2.2.15. The total lubricant consumed during the data collection period, in g/h, shall be recorded, using any suitable method, as for example the drain and weigh procedure described in Appendix 6. For this purpose, the engine shall be run during 24 hours, performing consecutive WHTC test-cycles. In cases where an accurate measurement of oil consumption cannot be obtained, the manufacturer, in agreement with the Type Approval Authority, may use the following options for the determination of the lubricant consumption:

                  (a) A default value of 30 g/h;

                  (b) A value requested by the manufacturer, based on sound data and information, and agreed with the Type Approval Authority.

              2.3. Calculation of the equivalent ageing time corresponding to a reference temperature

              2.3.1. The temperatures recorded pursuant to paragraphs 2.2. to 2.2.15. shall be reduced to a reference temperature Tr, requested by the manufacturer in agreement with the Type Approval Authority, within the range of the temperatures recorded during the data collection phase.

              2.3.2.