Document ID: chunk:federal_register_of_legislation:F2008C00323:reg:11:p2
Version: federal_register_of_legislation:F2008C00323
Segment Type: reg
Provision Reference: reg 11 (pt 2/45)
Character Range: 371004–379344

is the case, the vehicle must be driven until the end of the regeneration. If a regeneration occurs during the emissions measurement, a new test (including preconditioning) shall be performed, and the first result not taken into account.

        All exhaust emissions results shall be plotted as a function of the running distance on the system rounded to the nearest kilometre and the best fit straight line fitted by the method of least squares shall be drawn through all these data points. This calculation shall not take into account the test results at 0 km.

        The data will be acceptable for use in the calculation of the deterioration factor only if the interpolated 6,400 km and 80,000 km points on this line are within the above mentioned limits.

        The data are still acceptable when a best fit straight line crosses an applicable limit with a negative slope (the 6,400 km interpolated point is higher than the 80,000 km interpolated point) but the 80,000 km actual data point is below the limit.

         A multiplicative exhaust emission deterioration factor shall be calculated for each pollutant as follows:

   D.E.F. =  Mi2
   Mi1

         where:

                Mi1 = mass emission of the pollutant i in g/km interpolated to 6,400 km,

                Mi2 = mass emission of the pollutant i in g/km interpolated to 80,000 km.

        These interpolated values shall be carried out to a minimum of four places to the right of the decimal point before dividing one by the other to determine the deterioration factor. The result shall be rounded to three places to the right of the decimal point.

        If a deterioration factor is less than one, it is deemed to be equal to one.

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Annex 10

        1. SPECIFICATIONS  OF  REFERENCE  FUELS
         FOR  TESTING  VEHICLES  TO THE  EMISSION  LIMITS  GIVEN  IN  ROW  A  OF  THE  TABLE  IN PARAGRAPH  5.3.1.4. – TYPE  I  TEST

        1.1. TECHNICAL  DATA  ON  THE  REFERENCE  FUEL  TO  BE  USED  FOR TESTING  VEHICLES  EQUIPPED  WITH  POSITIVE-IGNITION  ENGINES

            Type: Unleaded petrol
Parameter  Unit  Limits 1/  Test Method

minimum                                                                                                                                                                                                                                                                                                                                                                                                                                             maximum
Research octane number, RON                                                                                                                                                                                                                                                                                                                                                                                                                                       95.0    -        EN 25164
Motor octane number, MON                                                                                                                                                                                                                                                                                                                                                                                                                                          85.0    -        EN 25163
Density at 15 °C                                                                                                                                                                                                                                                                                                                                                                                                                                    kg/m3         748     762      ISO 3675
Reid vapour pressure                                                                                                                                                                                                                                                                                                                                                                                                                                kPa           56.0    60.0     EN 12
Distillation:
- initial boiling point                                                                                                                                                                                                                                                                                                                                                                                                                             °C            24      40       EN-ISO 3405
- evaporated at 100 °C                                                                                                                                                                                                                                                                                                                                                                                                                              per cent v/v  49.0    57.0     EN-ISO 3405
- evaporated at 150 °C                                                                                                                                                                                                                                                                                                                                                                                                                              per cent v/v  81.0    87.0     EN-ISO 3405
- final boiling point                                                                                                                                                                                                                                                                                                                                                                                                                               °C            190     215      EN-ISO 3405
Residue                                                                                                                                                                                                                                                                                                                                                                                                                                             per cent v/v  -       2        EN-ISO 3405
Hydrocarbon analysis:
- olefins                                                                                                                                                                                                                                                                                                                                                                                                                                           per cent v/v  -       10       ASTM D 1319
- aromatics                                                                                                                                                                                                                                                                                                                                                                                                                                         per cent v/v  28.0    40.0     ASTM D 1319
- benzene                                                                                                                                                                                                                                                                                                                                                                                                                                           per cent v/v  -       1.0      pr.