Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:5:p28
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 5 (pt 28/36)
Character Range: 498478–501715

excluded from the database. For introduction of a new system into the Directive the determination of equivalency shall be based upon the calculation of repeatability and reproducibility, as described in ISO 5725.'

     (n)    The following sections 6.3, 6.4 and 6.5 are added:

     '6.3. Durability and deterioration factors

          6.3.1.             For the purposes of this Directive, the manufacturer shall determine deterioration factors that will be used to demonstrate that the gaseous and particulate emissions of an engine family or engine-aftertreatment system family remain in conformity with the appro- priate emission limits specified in the tables in section 6.2.1 of this Annex over the appropriate durability period laid down in Article 3 to this Directive.

          6.3.2.             The procedures for demonstrating the compliance of an engine or engine-aftertreatment system family with the relevant emission limits over the appropriate durability period are given in Annex II to Directive 2005/78/EC.

          6.4.                  On-Board Diagnostic (OBD) system

          6.4.1.             As laid down in Articles 4(1) and 4(2) of this Directive, diesel engines or vehicles equipped with a diesel engine must be fitted with an on-board diagnostic (OBD) system for emission control in accordance with the requirements of Annex IV to Directive 2005/78/EC.

          As laid down in Article 4(2) of this Directive, gas engines or vehicles equipped with a gas engine must be fitted, with an on-board diagnostic (OBD) system for emission control in accordance with the requirements of Annex IV to Directive 2005/78/EC.

          6.4.2.             Small batch engine production

          As an alternative to the requirements of this section, engine manufacturers whose world-wide annual production of a type of engine, belonging to an OBD engine family,

            —      is less than 500 units per year, may obtain EC type-approval on the basis of the requirements of the present directive where the engine is monitored only for circuit continuity and the after-treatment system is monitored for major functional failure;

            —     is less than 50 units per year, may obtain EC type-approval on the basis of the requirements of the present directive where the complete emission control system (i.e. the engine and after-treatment system) are monitored only for circuit continuity.

          The type-approval authority must inform the Commission of the circumstances of each type-approval granted under this provision.

          6.5.                  Requirements to ensure correct operation of NOx control measures (*)

          6.5.1.             General

          6.5.1.1.         This section is applicable to all engine systems irrespective of the technology used to comply with the emission limit values given in the tables in section 6.2.1 of this Annex.

          6.5.1.2.         Application dates

          The Requirements of sections 6.5.3, 6.5.4 and 6.5.5 shall apply from 1 October 2006 for new type approvals and from 1 October 2007 for all registrations of new vehicles.

          6.5.1.3.         Any engine system covered by this section shall be designed,