Document ID: chunk:federal_register_of_legislation:F2012C00283:reg:7:p28
Version: federal_register_of_legislation:F2012C00283
Segment Type: reg
Provision Reference: reg 7 (pt 28/51)
Character Range: 583166–586423

pending code erased through self-clearing or by a scan tool command).
              7.7.4. The OBD system shall disable further incrementing of the general denominator within 10 seconds, if a malfunction has been detected of any component used to determine whether the criteria in paragraph 7.5. are satisfied (i.e. vehicle speed, ambient temperature, elevation, idle operation, or time of operation) and the corresponding pending fault code has been stored. The general denominator may not be disabled from incrementing for any other condition. Incrementing of the general denominator shall resume within 10 seconds when the malfunction is no longer present (e.g., pending code erased through self-clearing or by a scan tool command).

Annex 11 - Appendix 2
  Essential characteristics of the vehicle family
              1. Parameters defining the OBD family
                The OBD family means a manufacturer's grouping of vehicles which, through their design, are expected to have similar exhaust emission and OBD system characteristics. Each engine of this family shall comply with the requirements of this Regulation.
               The OBD family may be defined by basic design parameters which shall be common to vehicles within the family. In some cases there may be interaction of parameters. These effects shall also be taken into consideration to ensure that only vehicles with similar exhaust emission characteristics are included within an OBD family.
              2. To this end, those vehicle types whose parameters described below are identical are considered to belong to the same engine/emission control/OBD system combination.
               Engine:
               (a) Combustion process (i.e. positive-ignition, compression-ignition, two- stroke, four-stroke/rotary);
               (b) Method of engine fuelling (i.e. single or multi-point fuel injection);
               (c) Fuel type (i.e. petrol, diesel, flex fuel petrol/ethanol, flex fuel diesel/  biodiesel, NG/biomethane, LPG, bi fuel petrol/NG/biomethane, bi-              fuel petrol/LPG).
               Emission control system:
               (a) Type of catalytic converter (i.e. oxidation, three-way, heated catalyst,  SCR, other);
               (b) Type of particulate trap;
               (c) Secondary air injection (i.e. with or without);
               (d) Exhaust gas recirculation (i.e. with or without);
                 OBD parts and functioning.
               The methods of OBD functional monitoring malfunction detection and malfunction indication to the vehicle driver.
Annex 12
  Granting of an ECE type approval for a vehicle fuelled by LPG or NG/biomethane
              1. Introduction
               This annex describes the special requirements that apply in the case of an approval of a vehicle that runs on LPG or NG/biomethane, or that can run either on petrol or LPG or NG/biomethane in so far as the testing on LPG or NG/biomethane gas is concerned.
               In the case of LPG and NG/biomethane natural gas there is on the market a large variation in fuel composition, requiring the fuelling system to adapt its fuelling rates to these compositions. To demonstrate this capability, the vehicle has to be tested in the test Type I on two