3.5.4. Working Party on Pollution and Energy (GRPE) (Sixty-ninth session, 3-6 June 2014)
Authorization to extend the scope of the HDH informal group mandate to include alignment of GTR No. 4 and No. 11
07 Apr 2014 World Forum Formal Documents Heavy-Duty Hybrid Vehicle Emissions Heavy-duty Hybrids (HDH) This project, as currently envisioned, would result in an amendment to Global Technical Regulation 4: Worldwide Harmonized Heavy-Duty Emissions Certification Procedure (WHDC). Worldwide Heavy-Duty Vehicle Emissions Certification Procedure WHDC Global Technical Regulation No. 4: Test Procedure for Compression-ignition (C.I.) Engines and Positive-ignition (P.I.) Engines Fuelled with Natural Gas (NG) or Liquefied Petroleum Gas (LPG) with regard to the Emission of Pollutants Non-Road Mobile Machinery Emissions NRMM Emissions Test procedure for compression-ignition engines to be installed in agricultural and forestry tractors and in non-road mobile machinery with regard to the emissions of pollutants by the engine WP.29/AC.3/38
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