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GB 14762-2008 English PDF

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GB 14762-2008: Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (Ⅲ, Ⅳ)
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GB 14762: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB 14762-2008English2029 Add to Cart 10 days [Need to translate] Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (Ⅲ, Ⅳ) Valid GB 14762-2008
GB 14762-2002EnglishRFQ ASK 6 days [Need to translate] Limits and measurement methods for exhaust pollutants from positive ignition (P. I.) engines of vehicles and vehicles equipped with P. Iengines Obsolete GB 14762-2002
GB/T 14762-1993English679 Add to Cart 5 days [Need to translate] Test method for exhaust pollutants from gasoline engine of vehicle Obsolete GB/T 14762-1993

PDF similar to GB 14762-2008


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Basic data

Standard ID GB 14762-2008 (GB14762-2008)
Description (Translated English) Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (��, ��)
Sector / Industry National Standard
Classification of Chinese Standard Z64
Classification of International Standard 13.040.50
Word Count Estimation 92,960
Date of Issue 2008-04-02
Date of Implementation 2009-07-01
Older Standard (superseded by this standard) GB 14762-2002
Quoted Standard GB/T 15089-2001; GB/T 17692-1999; GB 17930; GB 18285-2005; GB 18352.3-2005; GB 20890-2007; ISO 16183; ISO 16185
Regulation (derived from) Department of Environmental Protection Notice 2008 No. 3 Announcement of Newly Approved National Standards No. 3 of 2008 (No. 116 overall)
Issuing agency(ies) Ministry of Environmental Protection, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Summary This Chinese standard specifies the heavy-duty gasoline engines and automotive exhaust emission limits and measurement methods, on-board diagnostic (OBD) system technical requirements and test methods. This standard applies to the design speed greater than 25km/h for M2, M3, N2 and N3 categories and the total mass greater than 3500kg category M1 vehicles equipped with gasoline engines and vehicle type approval, production consistency checks and the car/engine compliance check. If equipped with a gasoline engine category M2 vehicles have been GB18352. 3-2005 requirements for the type approval, the vehicle engine may be type approved according to this standard.

GB 14762-2008: Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (Ⅲ, Ⅳ)


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Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (Ⅲ, Ⅳ) ICS 13.040.50 Z 64 National Standards of People's Republic of China GB 14762 2008 Replacing GB 14762-2002 Heavy vehicles and cars with a gasoline engine exhaust emission limits and measurement methods (China Ⅲ, Ⅳ stage) Limits and measurement method for exhaust pollutants from gasoline engines of heavy-duty vehicles (Ⅲ, Ⅳ) Ministry of Environmental Protection State Administration of Quality Supervision, Inspection and Quarantine release People's Republic of China Ministry of Environmental Protection Bulletin No. 3, 2008 To implement the "People's Republic of China Environmental Protection Law" and "People's Republic of China Air Pollution Prevention Law," Prevention fitted with a gasoline Motivation automobile exhaust pollution of the environment, protect and improve the ecological environment, safeguarding human health, it is now approved "heavy-duty gasoline-powered vehicles Machine and automobile exhaust emission limits and measurement methods (China Ⅲ, Ⅳ stage) "for the national pollutant discharge standards by the Ministry of State Administration of Quality Supervision, Inspection and Quarantine jointly issued. Standard name, numbered as follows. Heavy vehicles and cars with a gasoline engine exhaust emission limits and measurement methods (China Ⅲ, Ⅳ stage) (GB 14762- 2008) According to relevant laws and regulations, these standards have the effect of enforcement. Above standard since July 1, 2009 implementation, published by the China Environmental Science Press, standard content in the MEP network Since the implementation of standards from "vehicle fitted with spark ignition engines and vehicles equipped ignition engine exhaust emission limits and measurement side Law "(GB 14762-2002) abolished. Special announcement. March 31, 2008 GB 14762 2008

Table of Contents

Preface ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 type approval application 4 5 type approval 5 6 engine marks 6 7 Technical requirements and testing 6 8 8 installed in the vehicle 9 engine family and the source machine 8 Conformity of production 10 10 11 Standards 11 Appendix A (normative) Type approval application materials 13 Profile Basic characteristics Annex AA (normative annex) (source machine) engine and related testing 13 The basic characteristics of Annex AB (Normative annex) Engine family 19 Accessories AC (Normative annex) the basic characteristics of the engine types within the family line 20 The accessory AD (Normative Annex) of the vehicle engine related parts and Characteristics 23 Appendix B (normative) Test procedures 24 Annex BA (Normative annex) heavy-duty gasoline engine transient test cycle 25 Annex BB (normative annex) heavy-duty gasoline engine transient cycle test specification 32 Accessories BC (Normative Annex) Measurement and sampling procedures 48 Accessories BD (Normative annex) Calibration procedures 50 Annex C (normative) technical reference fuel requirements 57 Annex D (normative) Sampling and analysis system 60 Appendix E (normative) Type Approval Certificate 64 Accessories EA (Normative annex) type approval certificate Annex 64 Annex F (normative) to ensure conformity of production requirements 66 Determination method annex FA (Normative annex) Conformity of Production 67 Annex G (normative) on-board diagnostic (OBD) system 71 Accessories GA (Normative annex) on-board diagnostic (OBD) system functional test project 74 Accessories GB (Normative annex) on-board diagnostic (OBD) system, the basic characteristics of the Department of Family 77 Annex H (normative) in the car/engine compliance 79 Annex I (informative) Calculation Program Example 84 GB 14762 2008

Foreword

To implement the "People's Republic of China Environmental Protection Law" and "People's Republic of China Air Pollution Prevention Law," to protect the environment, prevent Pollution, the development of this standard. This standard specifies the first Ⅲ, Ⅳ stage heavy-duty vehicles with gasoline engines with emission limits and measurement methods for automobile exhaust emissions, in order to Technical requirements and test methods for second stage Ⅲ-board diagnostic (OBD) systems. This standard specifies the heavy-duty vehicle gasoline engines and vehicle exhaust emission stage Ⅲ and stage Ⅳ type approval requirements, Vehicle production consistency and compliance checks and determination method in the car. This standard is GB 14762-2002 amendment, compared with GB 14762-2002 main changes are as follows. --- Improve the exhaust pollutant emission control requirements; --- Adjust the standard system will be installed for natural gas or liquefied petroleum gas as a fuel for spark ignition engines and spark ignition cars Engine emission limits and measurement methods of gaseous pollutants into other relevant emission standards; --- Change the measurement methods, test conditions by the heavy gasoline engine transient cycle constituted; --- From the beginning stage Ⅲ, increased requirements for on-board diagnostic (OBD) system; --- From the beginning stage Ⅲ, increasing the durability requirements of emission control devices; --- From paragraph Ⅳ start, increasing compliance requirements in car/engine; --- Adds new engine type approval procedures and a new car; --- Improve production consistency check and determination methods. The Standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E, Appendix F, Annex G and Annex H normative appendix, Appendix I is an informative annex. "Compression ignition and gas fueled positive ignition engines of automobile exhaust emission limits and measurement methods" (GB 17961- 2005) has been replaced by "vehicles fitted with spark ignition engines and vehicles equipped ignition engine exhaust emission limits and measurement methods" (GB 14762-2002) mounted ignition engines and compression ignition automobile part and gas; Instead of the standard "vehicles fitted with spark ignition engines and Ignition engine exhaust emission limits and measurement methods "(GB 14762-2002) of gasoline and gasoline vehicle. From the date of implementation of this standard, "vehicle fitted with spark ignition engines and vehicles equipped ignition engine exhaust emission limits and measurement The method "(GB 14762-2002) abolished. According to relevant laws and regulations, the standard shall be enforceable. The standard developed by the Ministry of Environmental Protection Science, Technology organization. This standard was drafted. China Automotive Technology and Research Center. This standard is approved by the Ministry of Environmental Protection, 2008 March 17. This standard since July 1, 2009 implementation. The standard explanation by the Ministry of Environmental Protection. GB 14762 2008 Heavy vehicle gasoline engine and automobile exhaust pollutants Emission limits and measurement methods (China Ⅲ, Ⅳ stage)

1 Scope

This standard specifies the heavy-duty vehicle gasoline engines exhaust emission limits and measurement methods, on-board diagnostic (OBD) system The technical requirements and test methods. This standard applies to the design speed greater than 25 km/h for M2, M3, N2 and N3 class and total mass greater than 3 500 kg of category M1 motor Type of vehicle fitted with a petrol engine and vehicle approval, production consistency check and compliance check in car/engine. If equipped with gasoline engines category M2 vehicle type approval has been carried out according to the provisions of GB 18352.3-2005, the vehicle engine may be type approved in accordance with this standard.

2 Normative references

The standard content of the following documents cited in the articles. For undated references, the effective version applies to this standard. GB/T 15089-2001 Classification of motor vehicles and trailers GB/T 17692-1999 automotive net engine power test method GB 17930 cars using unleaded petrol GB 18285-2005 ignition engine exhaust emission limits and measurement methods (two-speed idle conditions and simple method) GB 18352.3-2005 light vehicle emission limits and measurement methods (China Ⅲ, Ⅳ stage) System Requirements and test methods for durability GB 20890-2007 heavy vehicle exhaust emission control ISO 16183 heavy duty engines used in the original part of the exhaust gas flow dilution under transient test conditions and measurement methods of gaseous pollutants Methods of measurement systems measure particulate emissions Engine family ISO 16185 for heavy road vehicles automobile exhaust emissions certification ---

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 gaseous pollutants Carbon monoxide (CO), hydrocarbons (HC) (hydrocarbons than gasoline assumed to C1H1.85) and nitrogen oxides (NOx, NO2 when using the Scale Shown). 3.2 test cycle Engine in transient conditions the test in accordance with the rotational speed and torque testing procedures. 3.3 engine (or engine family) type-approval Exhaust emissions on the level of approval of an engine (or engine family) type. 3.4 Gasoline Gasoline-fueled spark ignition engines. 3.5 Engine Model (model) The basic characteristics of the engine listed in Appendix A of the same type of engine no difference. 3.6 engine family Manufacturing Enterprises by the provisions of Appendix AB designed a set of engines, these engines have similar exhaust emission characteristics; the same family All engines shall meet the appropriate emission limits. GB 14762 2008 3.7 source machine Selected from the engine family, the engine family to represent the emission characteristics of the engine. 3.8 The net power In the test bench, the power measurement method according to GB/T 17692-1999 provisions, in the end of the engine crankshaft or equivalent member The measured power. 3.9 Maximum net power (Pmax) manufacturing enterprises in the application for type-approval declared maximum net power. 3.10 percent load The percentage of the engine at a speed up to the maximum torque. 3.11 Heavy Gasoline Engine Transient Cycle Performed in this standard 7.2 contains one 830-by-second conversion conditions of the test cycle. The test cycle is launched using Annex BB Machine normalized speed and torque time time data conversion in accordance with the method prescribed in Annex BA from the actual test engine rotational speed And torque between the time series. 3.12 engine operating speed range The standard set forth in Appendix B, the most common practice when the engine speed range of the engine, which is below the maximum net power speed And between the idle speed. 3.13 maximum net power speed (nPmax) maximum net power engine speed issue when. 3.14 Failure means An apparatus, by measuring it, in response to induction or car operating parameters (such as vehicle speed, engine speed, transmission gear, temperature, Intake pressure or other parameters) to activate, adjust, delay or stop work or a part of the function of the emission control system so that steam Car under normal conditions of use, the effectiveness of the emission control system is reduced, and the apparatus of the above functions without the use of type approval. When no other measures do not reduce the efficiency of the emission control system may be, the following devices are not as disabling means. --- In order to avoid interruption of work due to engine damage or failure, the engine used temporary protection; --- Only at engine start-up or during warm-functioning devices. 3.15 auxiliary control unit (AECS) A system installed on the engine or car, function or control strategy to protect the engine and its ancillary equipment, in order to avoid Free engine damage and failure, or in favor of starting the engine. An auxiliary control device may also be a countermeasure or measures, It should prove that it is not a failure of the device. 3.16 irrational emission control strategy Some countermeasures or measures to enable the vehicle under normal operating conditions reduce the effectiveness of emission control systems, lower than the corresponding type approval Level. 3.17-board diagnostic (OBD) system Emission control OBD system. It should identify the possible fault zone function, fault code and the way the letter Information stored in the electronic control unit memory. 3.18 OBD engine family When a common standard in accordance with this Appendix G of the type approval requirements of OBD systems, manufacturing enterprises by Chapter 9 of Annex OBD system design parameters produced a set of engine systems. 3.19 In the car/engine compliance check Testing and conformity assessment in accordance with section 7 of this Standard and Appendix H conducted. 3.20 M1, M2, M3, N2, N3 type of vehicle according to GB/T 15089-2001 provisions. M1 vehicles meant to include the driver's seat, including the seat number of not more than nine passenger vehicle; GB 14762 2008 M2 class car meant to include the driver's seat, including the seat number more than 9, and the maximum design total mass not exceeding 5 000 kg of passenger vehicles; M3 category vehicles meant to include the driver's seat, including the seat number more than 9, and the maximum designed total mass exceeding 5 000 kg of passenger vehicles; N2 category vehicles means the maximum designed total mass exceeding 3 500 kg, but not exceeding 12 000 kg of cargo vehicles; N3 class vehicles means the maximum designed total mass exceeding 12 000 kg of cargo vehicles. 3.21 Heavy-Duty Truck Maximum total mass greater than 3 500 kg of category M and N vehicles. The definition of class M and N categories of vehicles according to GB/T 15089-2001 regulation set. 3.22 Symbols and units 3.22.1 Test Parameters Symbol Symbol Unit Definition C1 - C 1 (C1) equivalents of hydrocarbons conc 10 - 6,% volume fraction represented by the subscript D0 m3/s PDP calibration intercept function curve DF - dilution factor f a - Laboratory atmospheric factor FS - stoichiometric coefficients GTOTW kg/h diluted exhaust gas mass flow rate (wet basis) H J/kg calorific value HREF g/kg of the reference value of the absolute humidity (10.71g/kg) Ha g/kg Absolute humidity of the intake air Hd g/kg Absolute humidity of the dilution air HTCRAT mol/mol hydrogen - carbon ratio Kw, a - intake from the dry to wet correction factor group Kw, d - dilution air from dry to wet basis correction coefficient Kw, e - diluted exhaust gas from the dry to wet correction factor group L% test engine torque with respect to the percentage of the maximum torque m - PDP calibration function curve slope CVS entire cycle MTOTW kg Total diluted exhaust mass (wet basis) MTOTW, kg CVS instantaneous mass of the diluted exhaust (wet basis) Np - total number of revolutions of the entire cycle PDP Np, i - a certain time interval the total number of revolutions PDP n r/min Engine speed nP s - 1 PDP speed nPmax r/min Engine maximum net power speed P a kPa Saturation vapor pressure of engine intake air pA kPa absolute pressure pB kPa Total atmospheric pressure P d kPa Saturation vapor pressure of the dilution air p s kPa Dry air intake pressure P l kPa pressure drop at the pump inlet Power P (a) when the accessory is installed kW of absorbed test GB 14762 2008 CONTINUED Symbol Unit Definition Power P (b) kW will be removed during the test accessories absorbed P (n) kW Net power uncorrected P (m) kW Power measured test stand Q s m3/s CVS volume flow R a% Relative humidity of the intake air Rd% Relative humidity of the dilution air R f - FID response factor ρ kg/m3 Density T K thermodynamic temperature Ta K intake air temperature V0 m3/r PDP effective volume flow rate The actual cycle work W act kW · h heavy gasoline Transient Cycle Reference cycle work W ref kW · h heavy gasoline Transient Cycle X0 m3/r PDP volume flow calibration function 3.22.2 chemical component symbol C2H6 ethane C3H8 Propane CO carbon monoxide CO2 carbon dioxide HC Hydrocarbons NOx nitrogen oxides NO NO Nitrogen dioxide NO2 3.22.3 Acronym CFV critical flow venturi tube (Critical flow venturi) CLD chemiluminescence detector (Chemiluminesecnt detector) FID flame ionization detector (Flame ionzation detector) HCLD Heated chemiluminescent detector (Heated chemiluminesecnt detector) HFID Heated flame ionization detector (Heated Flame ionzation detector) NDIR non-dispersive Infrared Analyzer (Non-dispersive infrared analyser)

4 type approval application

This standard applies to the scope of a new car by car or engine or engine manufacturers or their authorized agents according to the requirements of this standard Environmental protection under the State Council administrative department to apply for type approval and complete the contents of this test required by the standard. 4.1 As an independent technology assembly engine model (or family) of the type approval application 4.1. 1 as a separate technical assembly of the engine type or family, the gasoline engine emission levels of gaseous pollutants and OBD system Type approval application, shall be the engine manufacturer or its authorized agent asked. 4.1. 2 should also provide a description of the engine type or engine family, which includes the contents of the provisions of Appendix A should be the standard. GB 14762 2008 Type approval test inspection agency 4.1. 3 shall be responsible for carrying out the provisions of Chapter 7, according to Annex A to submit a description of the "engine Type "or" parent engine "characteristics of the engine, the completion of the inspection the contents of this standard. 4.2 pairs of vehicles type-approval application 4.2. One pair mounted engine models without type approval application for type approval Car type 4.2. 1.1 on the installation without type approval or gasoline-based family of gaseous pollutant emission levels and OBD systems conducted Style application for approval, by automobile manufacturers or their authorized agents proposed. 4.2. 1.2 should also offer models with engine related automotive components, and engine type or engine family (if applicable) Description of the content included in the provisions of Appendix A should be the standard. Type approval test inspection agency 4.2. 1.3 shall be responsible for carrying out the provisions of Chapter 7, submit a description of compliance with Appendix A "launch Machine type "or" parent engine "characteristics of the engine, the completion of the inspection the contents of this standard. 4.2 is equipped with two pairs of the type approved engine models for type approval application 4.2. 2.1 for the car, its type approved types of gasoline or a family-based emission levels of gaseous pollutants and OBD system Application for approval, by automobile manufacturers or their authorized agents proposed. 4.2. 2.2 should also provide a description of the vehicle and engine-related auto parts, the content included in Appendix A should be the standard Provisions. 4.2. 2.3 shall be accompanied by a model of the engine (or engine family) type approval certificate. Requirements 4.3 pairs of on-board diagnostic (OBD) system If the application involves the OBD system shall comply with the regulations Section G.3 Appendix G, and attach the following. Additional Information 4.3. 1 AA.2.3 requirements. 4.3. 2 detailed written information, a comprehensive account of the work of the functional characteristics of the OBD system, including all the vehicle emission control system Off the parts list that OBD system monitoring sensors, actuators and components. 4.3. 3 OBD system malfunction indicator (MI) is described. 4.3. 4 manufacturer shall state in order to prevent damage and changes to the provisions of emissions control ECU. 4.3. 5 applies, a copy of other type-approval, and comes with the type-approval extension relevant information. 4.3. 6 applies, the OBD system accessory GB system family details. 4.3. 7 to be tested according to Section G.3 chapter, shall be responsible for the type approval test inspection agencies to submit a tape OBD system Engine or a car, the engine or car type approval on behalf of the preparation of engine models with OBD systems or engine system Family, car or car-based family. If the agency determines that the engine or car inspection submitted is not entirely representative of the OBD system accessory GB Family-based system, it should submit an alternative or an alternative engine car. If necessary, the need to increase an engine or a car, In the first test described in chapter G.3.

5 type approval

Meet the requirements of this standard 5.1, 5.2 or car engine and should be type approved and meet the nuclear issue type specified in Appendix E Registration certificate. 5.1 petrol engine (cars) type approval For gasoline engines (cars), the source machine Appendix C of the reference fuel tested in accordance with this standard, the gaseous emissions And OBD system shall meet the requirements of this standard. Emissions 5.2-based member of the family approved 5.2. 1 Except in the case referred to in Article 5.2.3, the source machine type approval can be extended to all members of the family system without further trial Experience. 5.2. 2 and the on-board diagnostic (OBD) system-related extensions. 5.2. 2.1 in OBD systems for type approval has been given engine model or models can be extended to different engine models Or models, as long as the engine model or models belonging to the same engine accessory GB or car OBD system family. But the engine emissions GB 14762 2008 Control system should have been approved by the type approval of the engine type or the same models, and in accordance with Annex GB described OBD...

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