Detail of GB 17691-2005

Introduction of GB 17691-2005

1 Scope This standard stipulates limits and measurement method for gaseous and particulate pollutants from exhaust gas of compression ignition (C.I.) engines for road vehicle use and vehicles equipped with C.I. engines, and for gaseous pollutants from motor vehicles equipped with positive ignition engines fuelled with natural gas (NG) or liquefied petroleum gas (LPG) and such engines. This standard applies to the C.I. engines (including positive ignition engines fuelled with gaseous fuel) used for driving motor vehicles of categories of M2, M3, N1, N2 and N3 having a design speed exceeding 25 km/h and vehicles of categories M1 having a total mass exceeding 3500 kg, and to the type approval, the inspection of conformity of production and the inspection of conformity of in-service vehicles. This standard does not apply to the C.I. engines used by category N1 and M2 power-driven vehicles which are approved according to GB 18352.3-2005 Limits and measurement methods for emissions from light-duty vehicles (III, IV). 2 Normative References The following standards contain provisions, which, through reference in this text, constitute provisions of this standard. For undated references, the latest edition of the document referred to applies. GB/T 15089-1994 Motor Vehicles and Trailers—Classification GB/T 17692 Measurement Methods of Net Power for Automotive Engines GB 18047 Automotive Compressed Natural Gas GB 18352.3-2005 Limits and measurement methods for emissions from light-duty vehicles (III, IV) GB/T19147 Automotive Diesel GB19159 Automotive Liquefied Petroleum Gas   3 Terms and Definitions For the purposes of this standard, the following terms and definitions apply: 3.1 exhaust pollutants mainly include gaseous pollutants and particulate matters Gaseous pollutants mean carbon monoxide (CO), hydrocarbons (HC) (assuming a ration of CH1.85 for diesel, CH2.525 for LPG, CH2.93 for NG (NMHC) and CH4 for NG) and oxides of nitrogen (expressed in nitrogen dioxide (NO2) equivalent)

Contents of GB 17691-2005

Foreword IV 1 Scope 2 Normative References 3 Terms and Definitions 4 Application for Type Approval 5 Type Approval 6 Engine Markings 7 Specifications and Tents 8 Installation on the Vehicle 9 Engine Family and Parent Engine 10 Production Conformity 11 Enforcement Date Annex A (Normative) Type Approval Application Materials Annex AA (Normative) Essential Characteristics of the (Parent) Engine and Information Concerning the conduct of Test Annex AB (Normative) Essential Characteristics of the Engine Family Annex AB (Normative) Essential Characteristics of the Engine Type Within the Family Annex AD (Normative) Characteristics of the Engine-related Vehicle Parts Annex B (normative) Test Procedure Annex BA (normative) ESC and ELR Test Cycles Annex BB (Normative) ETC Test Cycle Annex BC (Normative) ETC Engine Dynamometer Schedule Annex BD (Normative) Measurement and Sampling Procedures Annex BE (Normative) Calibration Procedure Annex C (Normative) Technical Characteristics of Reference Fuel Annex D (Normative) Analytical and Sampling Systems Annex E (Normative) Type Approval Certificate Annex EA (Normative) Annexes to Type Approval Certificate Annex F (Normative) Conformity of Production Procedures Annex FA (Normative) Procedure for Verifying the Conformity of Production Requirements Annex G (Normative) Example of Calculation Procedure Annex H (Normative) Reference