6 ALTERNATIVE STANDARDS

EC Directive (Diesel, Liquefied Petroleum Gas and Natural Gas Engines)

6.1 Subject to clauses 6.1.1, 6.1.2 and 6.1.3, for engines which operate on diesel, liquefied petroleum gas or natural gas, the technical requirements of Directive 2005/55/EC of the European Parliament and Council of 28 September 2005, together with the technical requirements of Commission Directive 2005/78/EC of 14 November 2005 and Commission Directive 2006/51/EC of 6 June 2006, are deemed to be equivalent to the technical requirements of this vehicle standard.

6.1.1 Engines which operate on diesel shall comply with the relevant limit values in row B1 of Table 1 and in row B1 of Table 2 to section 6.2.1 of Directive 2005/55/EC.

6.1.2 Engines which operate on liquefied petroleum gas or natural gas shall comply with the relevant limit values in row B1 of Table 2 to section 6.2.1 of Directive 2005/55/EC.

6.1.3 Engines which operate on diesel shall be equipped with an OBD system which complies with the Stage 1 requirements as described in sections 6.5 of Annex I and 3.2 of Annex IV of Directive 2005/78/EC, as amended by Directive 2006/51/EC, or the Stage 2 requirements as described in sections 6.5 of Annex I and 3.3 of Annex IV of Directive 2005/78/EC, as amended by Directive 2006/51/EC.

US EPA CFR (Diesel, Liquefied Petroleum Gas or Natural Gas Engines)

6.2 Subject to clauses 6.2.1 to 6.2.6 inclusive, for engines which operate on diesel, liquefied petroleum gas or natural gas, the technical requirements of the United States Code of Federal Regulations (CFR), Part 86 – Control of air pollution from new and in-use motor vehicles and new and in-use motor vehicle engines certification and test procedures - Subpart A 40 CFR 86.004-11 Emission standards for 2004 and later model year diesel heavy-duty engines and vehicles, are deemed to be equivalent to the technical requirements of this vehicle standard.

6.2.1 Engines shall meet the emission limits specified in 86.004-11 (a)(1), paragraphs (i)(A) or (i)(C), (ii)(A), and (iii)(B).

6.2.2 Engines shall be tested in accordance with the applicable test procedures as specified in Subpart N 40 CFR 86.1300 series – Emission Regulations for new Otto-cycle and diesel heavy duty engines; gaseous and particulate exhaust test procedures.

6.2.3 Engines which operate on diesel shall also comply with the ESC test specified in Appendix A, except that the emission limits specified under clause 6.2.1 of this vehicle standard apply in lieu of the limits in row B1 of Table 1 to section 6.2.1 of Appendix A.

6.2.4 Engines which operate on diesel, liquefied petroleum gas or natural gas shall satisfy relevant useful life provisions, not to exceed test requirements, and rules regarding use of emission control devices applicable to 2004 and later model year diesel heavy-duty engines and vehicles under CFR Part 86.