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国标英译 LIMITS AND MEASUREMENT METHODS FOR EMISSIONS FROM LIGHT-DUTY.PDF

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国标 LIMITS AND MEASUREMENT METHODS FOR EMISSIONS FROM LIGHT DUTY
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COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 1 LIMITS AND MEASUREMENT METHODS FOR EMISSIONS FROM LIGHT-DUTY VEHICLES (II) Issued April 16, 2001 COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 2 INTRODUCTION This Standard is formulated to prevent and control pollutant emissions from motor vehicles and improve air quality in accordance with the Environmental Protection Law of the People’s Republic of China and the Air Pollution Prevention and Control Law of the People’s Republic of China. This Standard equivalently adopts the whole technical content of EU Directive 96/69/EC Amending Council Directive 70/220/EEC on the Approximation of the Laws of the Member States Relating to Measures to be taken against Air Pollution by Emissions from Motor Vehicles which amends Directive 70/220/EEC On the Approximation of the Laws of the Member States Relating to Measures to be taken against Air Pollution by Emissions from Motor Vehicles. This Standard also refers to parts of the technical contents of Directive 98/77/EC Technical Progress Adapting to Directive 70/220/EEC on the Approximation of the Laws of the Member States Relating to Measures to be taken against Air Pollution by Emissions from Motor Vehicles. This Standard stipulates the limit values of exhaust emissions after a cold start, crankcase pollutant emissions of positive-ignition engines, evaporative fuel emissions from positive-ignition engines and durability requirements of vehicle emission control devices of light-duty vehicles, which are vehicles of Categories M 1 , M 2and N 1with gross vehicle weight not exceeding 3.5 t. The main content of this Standard is equivalent to the relevant content of the first stage of Emission Standard for Exhaust Pollutants from Light-duty Vehicles (GWPB1-1999) and adds limit values of emissions from gaseous fuel vehicles, which are also implemented at the time of implementation stipulated according to GWPB1-1999. From the date of implementation of this Standard, this Standard substitutes Limits and Measurement Methods for Emissions from Light-duty Vehicles (I) (GB 18352.1-2001). The following Standards are to be abolished on the day of publication of this Standard: GWPB1-1999 Pollutants from Light-duty Vehicles (Stage I) HJ/T26.1~26.5-1999 Measurement Methods for Emissions of Pollutants from Light-duty Vehicles GB14761-1999 Limits and Measurement Methods for Emissions of Pollutants from Motor Vehicles Appendices A, B, C, D, E, F, G and H of this Standard are all standard appendices. Appendix I is a reference appendix. This Standard was proposed by the Scientific and Technical Standard Department of the State Environmental Protection Administration. This Standard is interpreted by the State Environmental Protection Administration. This Standard was approved by the State Bureau of Quality and Technical Supervision on April 10, 2001 and comes into effect July 1, 2004 COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 3 LIMITS AND MEASUREMENT METHODS FOR EMISSIONS FROM LIGHT-DUTY VEHICLES (II) 1. SCOPE This Standard stipulates the emission limits and requirements for the durability of anti- pollution devices in tests and checks for type approval and conformity of production for pollutant emissions from light-duty vehicles. This Standard stipulates the measurement methods of exhaust emissions from light-duty vehicles after a cold start, crankcase gaseous emissions, evaporative emissions from motor vehicles equipped with positive-ignition engines and durability tests of anti-pollution devices. This Standard applies to light-duty vehicles equipped with positive-ignition engines or compression-ignition engines having a maximum design speed of greater than or equal to 50 km/h. 2. APPLICABLE STANDARDS The following existing Standards have been drawn from and incorporated into the articles of this Standard. Once this Standard is published, the edition of the existing Standard indicated shall be effective. All Standards undergo revision, and all users of this Standard should consider using the latest editions of the following Standards. GB/T 15089-1994 Classification of Motor Vehicles GB 17930-1999 Unleaded Petrol for Vehicles 3. DEFINITIONS This Standard uses the following definitions. 3.1. Light-Duty Vehicles Light-duty vehicles refers to vehicles of categories M 1 , M 2and N 1having a gross vehicle weight not exceeding 3.5t. 3.2. Type M 1 , N 1 , and M 2Vehicles According to the stipulations of GB/T 15089: M 1vehicle refers to a passenger vehicle with at least 4 wheels, or 3 wheels with gross vehicle weight not exceeding 1t according to the manufacturer’s specifications, which is designed to carry no more than 8 passengers (excluding the driver). M 2vehicle refers to a passenger vehicle with at least 4 wheels with gross vehicle weight not exceeding 5t according to the manufacturer’s specifications, or 3 wheels and with gross vehicle weight not exceeding 1t according to the manufacturer’s specifications, which is designed to carry more than 8 passengers (excluding the driver). N 1vehicle refers to a truck with at least 4 wheels with gross vehicle weight not exceeding 3.5t according to the manufacturer’s specifications, or 3 wheels and with gross vehicle weight not exceeding 1t according to the manufacturer’s specifications. COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 4 3.3. Type I Vehicle This refers to a category M 1vehicle that is designed to carry no more than 6 passengers including the driver and whose gross vehicle weight is ≤ 2.5t. 3.4. Type II Vehicle This refers to all light duty vehicles to which this Standard applies other than Type I vehicles. 3.5. Gas Fuel Liquefied petroleum gas (LPG) or natural gas (NG). 3.6. Category of vehicle Category of vehicle means a category of power-driven vehicles that do not differ in such essential respects as: (1) The equivalent inertia determined in relation to the reference mass as stipulated in Appendix C 5.1; (2) The engine and vehicle characteristics as stipulated in Appendices A and B. 3.7. Bi-Fuel Vehicles Vehicles that can use petrol and a kind of gaseous fuel. 3.8. Mono-Fuel Vehicles Vehicles that can use petrol and a kind of gaseous fuel (LPG or NG), but which only use petrol for emergency purposes or starting, and which have a petrol tank with a volume not exceeding 15 litres. 3.9. Reference Mass (RM) Reference mass refers to the unladen mass increased by 100 kg. 3.10. Gross Vehicle Weight (GVW) The maximum technically permissible mass stipulated by the vehicle manufacturer. 3.11. Equivalent Inertia This refers to the equivalent mass of simulated vehicle movement and rotational inertia of an inertia simulator on a chassis dynamometer. COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 5 3.12. Gaseous Pollutants Gaseous pollutants refers to the exhaust gas emissions of carbon monoxide (CO), hydrocarbons (HC) and oxides of nitrogen (NO x ). Oxides of nitrogen are expressed as a nitrogen dioxide (NO 2 ) equivalent. Hydrocarbons expressed as a carbon (C) equivalent assume carbon hydrogen ratios as follows: a) C 1 H 1.85for petrol; b) C 1 H 1.86for diesel; c) C 1 H 2.525for liquefied petroleum gas; d) C 1 H 4for natural gas. 3.13. Particulate Matter (PM) Particulate matter refers to solid and liquid particulates that are collected by means of a filter from the diluted exhaust gas at a maximum temperature of 52 ° C according to the sampling method described in Appendix C. 3.14. Tailpipe Emissions In the case of vehicles powered by positive-ignition engines, this refers to gaseous pollutants emitted by the exhaust pipe; in the case of vehicles powered by compression-ignition engines, this refers to gaseous pollutants and particulates emitted by the exhaust pipe. 3.15. Evaporative Emissions Evaporative emissions refers to hydrocarbon vapours lost from the fuel system of a motor vehicle other than those emitted from the vehicle’s tailpipe. (1) Fuel tank breathing losses (diurnal breathing losses) are hydrocarbon emissions caused by temperature changes in the fuel tank (shown as C 1 H 2.33 equivalent). (2) Hot soak losses are hydrocarbon emissions arising from the fuel system of a stationary vehicle after a period of driving (shown as C 1H 2.20 equivalent). 3.16. Crankcase Emissions This refers to gaseous pollutants emitted into the atmosphere from the engine crankcase. Engine crankcase refers to spaces in, or external to, the engine connected to the oil sump by internal or external ducts through which gases and vapour can escape. 3.17. Cold Start Device This refers to a device that temporarily enriches the air/fuel mixture, assisting the engine to start. COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 6 3.18. Starting Aid This refers to a device which assists engine start up without enrichment of the air/fuel mixture of the engine, e.g. glow plug, injection timing modification, etc. 3.19. Engine Capacity For reciprocating piston engines, this refers to the nominal engine swept volume; for rotary engines, this refers to double the nominal engine swept volume. 3.20. Anti-pollution Device This refers to a device used by the vehicle to control and limit tailpipe and evaporative emissions. 4. APPLICATION FOR TYPE APPROVAL 4.1. The application for approval of a category of vehicle with regard to tailpipe emissions after a cold start, fuel oil evaporative pollutant emissions, crankcase pollutant emissions and durability of anti-pollution devices should be submitted by the vehicle manufacturer or by its authorized representative. 4.2. The relevant technical documents should be submitted in accordance with the requirements of Appendix A of this Standard. When type approval extension is conducted, it is necessary to provide copies of other relevant type approvals and test data to support the approval and to determine deterioration factors. 4.3. One sample vehicle of the category of vehicle to be approved must be submitted to the technical inspection departments responsible for the type approval tests. Testing should be conducted according to methods stipulated in Section 5 of this Standard. 5. TYPE APPROVAL TESTS AND EMISSION LIMIT VALUES 5.1. General 5.1.1. The design, construction and installation of components liable to affect the vehicle’s exhaust pipe emissions and evaporative emissions must guarantee that the vehicle, in both normal use and when its components are vibrated, can still meet the requirements of this Standard. This Standard requires that the manufacturer takes some technical measures to ensure that the exhaust emissions and evaporative emissions are effectively reduced throughout the normal life of the vehicle and under normal conditions of use. If the vehicle’s catalytic converter is equipped with an oxygen sensor, appropriate measures must be taken to ensure the stoichiometric air/fuel ratio ( λ) is still effectively controlled at a certain speed and acceleration. 5.1.2. Vehicles powered by petrol engines must be designed to use unleaded petrol stipulated in GB 17930. COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 7 5.2. Requirements for Type-Approval Tests For tests required to be conducted on different types of vehicle for type approval, see Table 1. Table 1 Test Items for Vehicle Type Approval Vehicles equipped with positive-ignition engines Type approval test Petrol vehicles LPG/NG Vehicles Bi-fuel Vehicles Vehicles with compression- ignition engines Exhaust Emission Test (Test I) Yes Yes Crankcase Emission Test (Test III) Yes No Evaporative Emission Test (Test IV) Yes No Yes, for petrol only No Durability Test (Test V) Yes Yes Type Approval Extension Section 6 Section 6 (Category M 2 and N 2 vehicles with an RM not exceeding 2840 kg 5.3. Emission Limit Values of Type Approval Test 5.3.1. Exhaust emission test after cold start - Type I test 5.3.1.1. This test must be conducted on all vehicles. 5.3.1.1.1. For bi-fuel vehicles, the Type I test shall be implemented on both fuels separately. 5.3.1.1.2. For mono-fuel vehicles, only the gaseous fuel should undergo the Type I test. 5.3.1.2. Conduct tests according to the driving cycles (urban cycle (Part 1) plus extra-urban cycle (Part2)), exhaust sampling and analysis, collection of particulate matter, and weighing methods stipulated in Appendix C. COUNTRY :CHINA ? InterRegs Ltd 2005 ORIGINAL : TITLE: Limits and Measurement Methods for Emissions from GB 18352.2-2001 Light-Duty Vehicles (II) Jan/2005 PAGE: 8 5.3.1.3. For emission limit values for the Type I vehicle type approval test, see Table 2. Table 2 Emission Limit Values for Type I Tests Unit: g/km Limit values Carbon monoxide (CO) L 1Hydrocarbon + Nitrogen oxide (HC + NO x ) L 2Particulate matter (PM) L 3Type of Vehicle Reference Mass RM/ kg Positive ignition engine Compression ignition engine Positive ignition engine Non-direct- injection compression ignition engine Direct- injection compression ignition engine Non-direct- injection compression ignition engine Direct- injection compression ignition engine Type I Vehicle All 2.2 1.0 0.5 0.7 0.9 0.08 0.10 RM ≤ 1250 2.2 1.0 0.5 0.7 0.9 0.08 0.10 1250 1700 5.0 1.5 0.7 1.2 1.6 0.17 0.20 5.3.1.4. Test results and number of tests 5.3.1.4.1. The test should be repeated three times and the result of each test should be multiplied by the deterioration factor determined in Section 5.3.4. The results (indicated by V 1 , V 2 , and V 3 ) should each be less than the limits of Table 2. 5.3.1.4.2. For each pollutant mentioned above, the tests are considered to have been passed if the arithmetic mean value of the three measured results is lower than the respective limit specified for the corresponding vehicle. It is permitted for the value of one test result to exceed this limit, but the value of the test result must not exceed this limit by 1.1 times. Even if more than one type of the aforementioned pollutants (i.e. carbon monoxide emissions, hydrocarbon + oxides of nitrogen total emissions or the mass of particulate matter) exceeds the stipulated limits, whether this occurs during one test or d
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