Document ID: chunk:federal_register_of_legislation:F2024L00446:front:0:p58
Version: federal_register_of_legislation:F2024L00446
Segment Type: other
Provision Reference: 
Character Range: 178880–181936

Conformity of production for a test according to paragraph 5.3.1.2.

               In the case the interpolation method is not applied, the charge-depleting electric energy consumption value  according to step 16 of Table A8/8 of Annex B8 shall be used for verifying the conformity of production.

        In the case the interpolation method is applied, the charge-depleting electric energy consumption value  for the individual vehicle according to step 17 of Table A8/8 of Annex B8 shall be used for verifying the conformity of production.

Appendix 2

Verification of conformity of production for Type 1 test—statistical method
              1. This Appendix describes the procedure to be used to verify the production conformity requirements for the Type 1 test for criteria emissions, CO2 emissions, fuel efficiency and electric energy consumption, as applicable and in accordance with Table 8/1 of this Regulation, for pure ICE, NOVC-HEV, PEV and OVC-HEV and, where applicable, to determine the OBFCM device accuracy.

               Measurements of the criteria emissions, CO2 emissions, fuel efficiency and electric energy consumption, as applicable and in accordance with Table 8/1 of this Regulation, shall be carried out on a minimum number of 3 vehicles, and consecutively increase until a pass or fail decision is reached. Where applicable, the OBFCM device accuracy shall be determined for each of the N tests.

              2. Criteria emissions

              2.1. Statistical procedure and pass/fail criteria

               For Level 1A:

              For the total number of tests (N) and the measurement results of the tested vehicles, x1, x2, … xN, the average Xtests and the variance VAR shall be determined:

              and

               For OVC-HEV, in case of complete charge-depleting Type 1 test, the average emissions over the complete test of an individual vehicle shall be considered as a single value xi.

               For each total number of tests, one of the three following decisions can be reached for criteria emissions, based on the criteria emission limit value L according to Table 1A in paragraph 6.3.10. of this Regulation:

               (i) Pass the family if

               (ii) Fail the family if

               (iii) Take another measurement if:

               For the measurement of criteria emissions the factor A is set at 1.05.

               For Level 1B:

              Case A: the manufacturer's production standard deviation is satisfactory.

              With a minimum sample size of 3, the sampling procedure is set so that the probability of a lot passing a test with 40 per cent of the production defective is 0.95 (producer's risk = 5 per cent) while the probability of a lot being accepted with 65 per cent of the production defective is 0.l (consumer's risk
              = 10 per cent).

              For each of the criteria emissions given in Table 1B of paragraph 6.3.10. of this Regulation, the following procedure is used (see Figure 8/1 in paragraph 8.2.3.2. of this