Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p10
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 10/108)
Character Range: 911563–914811

applied according to paragraph 4.3.2. of this annex.
              4.5.4. Test mass correction factor
              The correction factor K1 for the test mass of the test vehicle shall be determined using the following equation:
           where:
           TM  is the test mass of the test vehicle, kg;
                     mav is the arithmetic average of the test vehicle masses at the beginning and end of road load determination, kg.
              4.5.5. Road load curve correction
              4.5.5.1. The curve determined in paragraph 4.3.1.4.4. of this annex shall be corrected to reference conditions as follows:
           where:
           F* is the corrected road load, N;
           f0 is the constant road load coefficient, N;
           f1 is the first order road load coefficient, N/(km/h);
           f2 is the second order road load coefficient, N/(km/h)2;
                  K0 is the correction factor for rolling resistance as defined in paragraph 4.5.2. of this annex;
                  K1 is the test mass correction as defined in paragraph 4.5.4. of this annex;
                  K2 is the correction factor for air resistance as defined in paragraph 4.5.1. of this annex;
                  T is the arithmetic average atmospheric temperature during all valid run pairs, °C;
           v is vehicle velocity, km/h;
                  w1 is the wind resistance correction as defined in paragraph 4.5.3. of this annex, N.
              The result of the calculation below shall be used as the target road load coefficient At in the calculation of the chassis dynamometer load setting described in paragraph 8.1. of this annex:
              .
              The result of the calculation below shall be used as the target road load coefficient Bt in the calculation of the chassis dynamometer load setting described in paragraph 8.1. of this annex:
                           (f1 × (1 + K0 × (T-20))).
              The result of the calculation below shall be used as the target road load coefficient Ct in the calculation of the chassis dynamometer load setting described in paragraph 8.1. of this annex:
                               (K2 × f2).
              4.5.5.2. The curve determined in paragraph 4.4.4. of this annex shall be corrected to reference conditions and measurement equipment installed according to the following procedure.
              4.5.5.2.1. Correction to reference conditions
              where:
           C* is the corrected running resistance, Nm;
                  c0 is the constant term as determined in paragraph 4.4.4. of this annex, Nm;
                  c1 is the coefficient of the first order term as determined in paragraph 4.4.4. of this annex, Nm/(km/h);
                  c2 is the coefficient of the second order term as determined in paragraph 4.4.4. of this annex, Nm/(km/h)2;
                  K0 is the correction factor for rolling resistance as defined in paragraph 4.5.2. of this annex;
                  K1 is the test mass correction as defined in paragraph 4.5.4. of this annex;
                  K2 is the correction factor for air resistance as defined in paragraph 4.5.1. of this annex;
           v is the vehicle velocity, km/h;
                  T is the arithmetic