Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:4:p33
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 4 (pt 33/42)
Character Range: 93961–97032

ISO DIS 16183, dated 15 October 2000, shall be followed.

6.1.4.2.                    In verifying whether any strategy or measure should be considered a defeat device or an irrational emission control strategy according to the definitions given in Sections 2.29 and 2.31, an additional margin of 10 %, related to the appropriate NOx limit value, shall be accepted.

6.1.5.                        Transitional provisions for extension of type-approval

6.1.5.1.                    This section shall only be applicable to new compression-ignition engines and new vehicles propelled by a compression-ignition engine that have been type-approved to the requirements of row A of the tables in Section 6.2.1.

6.1.5.2.                    As an alternative to Sections 6.1.3 and 6.1.4, the manufacturer may present to the technical service the  results of a NOx screening test using the ETC on the engine conforming to the characteristics of the parent engine described in Annex II, and taking into account the provisions of Sections 6.1.4.1 and 6.1.4.2. The manufacturer shall also provide a written statement that the engine does not employ any defeat device or irrational emission control strategy as defined in Section 2 of this Annex.

              6.1.5.3. The manufacturer shall also provide a written statement that the results of the NOx screening test and the declaration for the parent engine, as referred to in Section 6.1.4, are also applicable to all engine types within the engine family described in Annex II.

6.2.                            Specifications concerning the emission of gaseous and particulate pollutants and smoke

              For type approval to row A of the tables in Section 6.2.1, the emissions shall be determined on the ESC and ELR tests with conventional diesel engines including those fitted with electronic fuel injection equipment, exhaust gas recirculation (EGR), and/or oxidation catalysts. Diesel engines fitted with advanced exhaust aftertreatment systems including the NOx catalysts and/or particulate traps, shall additionally be tested on the ETC test.

              For type approval testing to either row B1 or B2 or row C of the tables in Section 6.2.1 the emissions shall be determined on the ESC, ELR and ETC tests.

              For gas engines, the gaseous emissions shall be determined on the ETC test.

              The ESC and ELR test procedures are described in Annex III, Appendix 1, the ETC test procedure in Annex III, Appendices 2 and 3.

              The emissions of gaseous pollutants and particulate pollutants, if applicable, and smoke, if applicable, by the engine submitted for testing shall be measured by the methods described in Annex III, Appendix 4. Annex V describes the recommended analytical systems for the gaseous pollutants, the recommended particulate sampling systems, and the recommended smoke measurement system.

              Other systems or analysers may be approved by the Technical Service if it is found that they yield equivalent results on the respective test cycle.