Document ID: chunk:federal_register_of_legislation:F2024C00356:reg:7:p6
Version: federal_register_of_legislation:F2024C00356
Segment Type: reg
Provision Reference: reg 7 (pt 6/51)
Character Range: 548944–552207

1         class 1         ISO 62512
Odour                                 characteristic  characteristic
Motor octane number                   min. 89         min. 89         EN 589 Annex B

         1 Balance has to be read as follows: balance = 100 – C3 ≤ C3 ≥ C4.
         2 This method may not accurately determine the presence of corrosive materials if the sample contains corrosion inhibitors or other chemicals which diminish the corrosivity of the sample to the copper strip. Therefore, the addition of such compounds for the sole purpose of biasing the test method is prohibited.
1.2.  Technical data of the NG or biomethane reference fuels
Characteristics     Units          Basis  Limits  Test Method
min.                max.
Reference fuel G20
Composition:
Methane             per cent mole  100    99      100          ISO 6974
Balance1            per cent mole  -      -       1            ISO 6974
N2                  per cent mole                              ISO 6974
Sulphur content     mg/m3 2        -      -       10           ISO 6326-5
Wobbe Index (net)   MJ/m3 3        48.2   47.2    49.2
Reference fuel G25
Composition:
Methane             per cent mole  86     84      88           ISO 6974
Balance1            per cent mole  -      -       1            ISO 6974
N2                  per cent mole  14     12      16           ISO 6974
Sulphur content     mg/m3 2        -      -       10           ISO 6326-5
Wobbe Index (net)   MJ/m3 3        39.4   38.2    40.6

         1 Inerts (different from N2) + C2 +C2+.
         2 Value to be determined at 293.2 K (20 °C) and 101.3 kPa.
         3 Value to be determined at 273.2 K (0 °C) and 101.3 kPa.
Annex 11
  On-board diagnostics (OBD) for motor vehicles
              1. Introduction
               This annex applies to the functional aspects of on-board diagnostic (OBD) system for the emission control of motor vehicles.
              2. Definitions
               For the purposes of this annex:
              2.1. "OBD" means an on-board diagnostic system for emission control which shall have the capability of identifying the likely area of malfunction by means of fault codes stored in computer memory.
              2.2. "Vehicle type" means a category of power-driven vehicles which do not differ in such essential engine and OBD system characteristics.
              2.3. "Vehicle family" means a manufacturer's grouping of vehicles which, through their design, are expected to have similar exhaust emission and OBD system characteristics. Each vehicle of this family shall have complied with the requirements of this Regulation as defined in Appendix 2 to this annex.
              2.4. "Emission control system" means the electronic engine management controller and any emission-related component in the exhaust or evaporative system which supplies an input to or receives an output from this controller.
              2.5. "Malfunction indicator (MI)" means a visible or audible indicator that clearly informs the driver of the vehicle in the event of a malfunction of any emission-related component connected to the OBD system, or the OBD system itself.
              2.6. "Malfunction" means the failure of an emission-related component or system that would result in