Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p5
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 5/18)
Character Range: 204626–207818

vehicle, and the resulting values shall be averaged. The manufacturer will provide statistical evidence to the responsible authority that the fit is sufficiently statistically justified.

              1.9.1. For Level 1A only:

              Based on the deviation of the measurements from the fit, the slope CRI should be corrected downward with the standard deviation of the errors in the fit:

                     where:

                     MCO2,i-fit  is the result of the applying the equation for each of the distances Di.

                     The slope CRI shall be corrected for the uncertainty in the fit by:

                     CRI  CRI - fit

              1.10. For Level 1A only:

              The run-in factor RICO2(j) for CO2 emissions of CoP test vehicle j shall be determined by the following equation:

               where:

                     Dk is the average distance of the valid tests after the run-in, km

                     Dj is the system odometer setting of the CoP test vehicle, km

                     MCO2,j is the mass CO2 emission measured on the CoP test vehicle, g/km

               In the case that Dj is lower than the minimum Di, Dj shall be replaced by the minimum Di.

              1.11.  For the determination of the run-in factor for all applicable criteria emissions, the coefficients CRI,c and Cconst, c shall be calculated with a least squares regression analysis to four significant digits on all valid tests before and after the run-in:

               where:

                     MC,i is the measured mass criteria emission component C

                     CRI,c is the slope of the linear regression line, g/km2

                     Cconst,c is the constant value of the linear regression line, g/km

               The manufacturer will provide statistical evidence to the responsible authority that the fit is sufficiently statistically justified and the uncertainty margin based on the variation in the data should be taken into account to avoid an overestimation of the run-in effect.

              1.12.  The run-in factor RIC(j) for criteria emission component C of CoP test vehicle j shall be determined by the following equation:

               where:

                     Dk is the average distance of the valid tests after the run-in, km

                     Dj is the system odometer setting of the CoP test vehicle, km

                     MC,j is the mass emission of component C on the CoP test vehicle, g/km

               In the case that Dj is lower than the minimum Di, Dj shall be replaced by the minimum Di.

              1.13. For Level 1A only:

              The run-in factor RIEC(j) for electric energy consumption shall be determined according to the procedure specified in paragraphs 1.9., 1.9.1. and 1.10. of this appendix, where CO2 in the formulae is replaced by EC.

               For Level 1B only:

              The run-in factor RIFE(j) for fuel efficiency and RIEC(j) for electric energy consumption shall be determined according to the procedure specified in paragraphs 1.9. (excluding paragraph 1.9.1.) and 1.10. of this appendix, where CO2 in the formulae is replaced by