1、ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system componentsfor compressednatural gas powered vehiclesLegal Notice for StandardsCanadian Standards Association and CSA America, Inc. (operating as “CSA Group”) develop standards through a consensus standardsdevelopment process approved by the Standards Counci
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22、erprovincial Gas Advisory CouncilApproved on February 25, 2014 by ANSIApproved on February 27, 2014 by IGACEffective in Canada October 1, 2015Fuel system componentsforcompressednatural gas poweredvehiclesANSI NGV 3.1-2014 CSA 12.3-2014ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compres
23、sed natural gas powered vehiclesMarch 2014 2014 CSA Group 1ContentsJoint Automotive Technical Committee 7Technical Committee on Natural Gas Powered Vehicles and Fuelling 9NGV 3/HGV 3 Technical Subcommittee on Standards for Fuel System Components for CompressedNatural Gas and Hydrogen Powered Vehicle
24、s 11Preface 131 Scope 172 Reference publications 193 Definitions 214 Construction and assembly 234.1 General 234.2 Electrical equipment and wiring 244.3 Component literature 244.4 Marking 254.4.1 Marking information 254.4.2 Marking methods 254.5 Gas composition 255 Test methods (general) 265.1 Gener
25、al test specifications 265.2 Hydrostatic strength 275.3 Leakage 285.3.1 General 285.3.2 External leakage 285.3.3 Internal leakage 285.3.4 Test conditions 285.4 Excess torque resistance 295.5 Bending moment 295.6 Continuous operation 305.6.1 Specific components 305.6.2 Other components 305.7 Corrosio
26、n resistance 315.7.1 General 315.7.2 Salt spray exposure 315.7.3 Accelerated cyclic corrosion 325.8 Atmospheric exposure test 345.8.1 General 345.8.2 Oxygen aging 345.8.3 Ozone 345.9 Abnormal electrical voltages 355.10 Non-metallic material immersion 35ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system comp
27、onents for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group 25.10.1 General 355.10.2 Natural gas exposure 355.10.3 Compressoroil exposure 355.11 Vibration resistance 355.12 Stress corrosion cracking resistance 365.13 Insulation resistance 365.14 Ultraviolet resistance of external sur
28、faces 365.14.1 General 365.14.2 Pass criteria 375.15 Automotive fluid exposure 375.15.1 General 375.15.2 Method 375.15.3 Fluids 375.15.4 Pass criteria 376 Quality assurance 376.1 General 376.2 Quality system 386.3 Independent inspection 386.3.1 General 386.3.2 System audit 386.4 Supplier quality sys
29、tems 387 Inspectionand acceptance testing 387.1 Inspection and acceptance testing plan 387.2 Inspectors responsibilities 387.3 Inspection of system critical components 387.4 Leak testing 388 Check valve 398.1 Scope 398.2 Marking 398.3 Construction and assembly 398.4 Tests 398.4.1 General 398.4.2 Lea
30、kage 408.4.3 Continuous operation 408.4.4 Cycling 408.4.5 Chatter flow 409 Manual valve 419.1 Scope 419.2 Marking 419.3 Construction and assembly 419.4 Tests 419.4.1 General 419.4.2 Continuous operation 429.4.3 Operating torque 43ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed n
31、atural gas powered vehiclesMarch 2014 2014 CSA Group 310 Manual container valve 4310.1 Scope 4310.2 Marking 4310.3 Construction and assembly 4410.4 Tests 4410.4.1 General 4410.4.2 Continuous operation 4510.4.3 Operating torque 4511 Automatic valve and automatic container valve 4611.1 Scope 4611.2 Ma
32、rking 4611.3 Construction and assembly 4611.4 Tests 4611.4.1 General 4611.4.2 Continuous operation 4712 Gas injector 4712.1 Scope 4712.2 Marking 4712.3 Construction and assembly 4812.4 Tests 4812.4.1 General 4812.4.2 Pneumatic strength 4912.4.3 Continuous operation 4912.4.4 Extreme temperature cycli
33、ng 4912.4.5 Insulation resistance 5013 Pressure indicator 5013.1 Scope 5013.2 Marking 5013.3 Construction and assembly 5013.4 Tests 5013.4.1 General 5013.4.2 Continuous operation 5114 Pressure regulator 5114.1 Scope 5114.2 Marking 5114.3 Construction and assembly 5214.4 Tests 5214.4.1 General 5214.4
34、.2 Hydrostatic strength 5314.4.3 External leakage 5414.4.4 Continuous operation 5414.4.5 Pressure impulse 5414.4.6 Water jacket freezing 5515 Gas flow adjuster 55ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group 415.1 Scope 551
35、5.2 Marking 5515.3 Construction and assembly 5515.4 Tests 5515.4.1 General 5515.4.2 Hydrostatic strength 5615.4.3 External leakage 5615.4.4 Continuous operation 5616 Gas/air mixer 5716.1 Scope 5716.2 Marking 5716.3 Construction and assembly 5716.4 Tests 5716.4.1 General 5716.4.2 Hydrostatic strength
36、 5816.4.3 External leakage 5816.4.4 Continuous operation 5817 Pressure relief valve 5817.1 Scope 5817.2 Marking 5917.3 Construction and assembly 5917.4 Tests 5917.4.1 General 5917.4.2 Hydrostatic strength 6017.4.3 Continuous operation 6017.4.4 Opening and reseating characteristics 6018 Pressure reli
37、ef device 6019 Excess flow valve 6019.1 Scope 6019.2 Marking 6119.3 Construction and assembly 6119.4 Tests 6119.4.1 General 6119.4.2 Internal leakage 6219.4.3 Turning effort 6219.4.4 Bending moment 6219.4.5 Continuous operation 6219.4.6 Operation 6220 Gas-tight housing and ventilation hoses and pass
38、ages 6220.1 Scope 6220.2 Marking 6220.3 Construction and assembly 6220.3.1 General 6220.3.2 Inspection and acceptance testing 63ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group520.4 Tests 6320.4.1 General 6320.4.2 External lea
39、kage, ventilation hoses and gastight housings 6420.4.3 External leakage, ventilation passages of pressure retaining components 6420.4.4 Venting ability and pressure retention 6420.4.5 Pull-off 6421 Rigid fuel line 6521.1 Scope 6521.2 Marking 6521.3 Construction and assembly 6521.4 Tests 6521.4.1 Gen
40、eral 6521.4.2 Continuous operation 6621.4.3 Bending 6622 Flexible fuel lines, hoses and assemblies 6622.1 Scope 6622.2 Markings 6722.3 Construction, assembly, and installation instructions 6822.4 Tests 6922.4.1 General 6922.4.2 Hydrostatic strength 7022.4.3 Leakage 7122.4.4 Continuous operation Vehi
41、cle hoses Class B and C 7122.4.5 Corrosion resistance 7222.4.6 Atmospheric exposure test 7222.4.7 Non-metallic material immersion 7222.4.8 Vibration test 7422.4.9 Electrical conductivity 7522.4.10 Kink resistance - Class B, C Hoses 7522.4.11 Marking material legibility 7622.4.12 Automotive fluid exp
42、osure 7622.4.13 Verification of hose cover perforations 7722.4.14 Hose permeation 7822.4.15 Tensile test of hose assembly 7923 Filter 8023.1 Scope 8023.2 Marking 8023.3 Construction and assembly 8023.4 Tests 8023.4.1 General 8023.4.2 Continuous operation 8124 Fitting 8124.1 Scope 8124.2 Marking 8124
43、.3 Construction and assembly 82ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group 624.4 Tests 8224.4.1 General 8224.4.2 Continuous operation 8224.4.3 Repeated assembly 8325 Non stainless steel rigid fuel line 8326 Discharge line
44、 closures 8326.1 Scope 8326.2 Markings 8326.3 Construction and assembly 8326.3.1 General 8326.3.2 Inspection and acceptance testing 8426.4 Tests 8426.4.1 General 8426.4.2 Leakage venting 8526.4.3 Continued operation 8526.4.4 Water jet protection 85Annex A (Informative) Extreme thermal cycling test 8
45、6ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group 7Joint Automotive Technical CommitteeJ. Birdsall Representing Toyota Motor Engineering c) wording of the proposed change; andd) rationale for the change.5) To submit a request
46、for interpretation of this Standard, please send the following information toinquiriescsagroup.organd include “Request for interpretation” in the subject line:a) define the problem, making reference to the specific clause, and, where appropriate, include anillustrative sketch;b) provide an explanati
47、on of circumstances surrounding the actual field condition; andc) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address theissue.Committee interpretations are processed in accordance with the CSA Directives and guidelines governingstandardization and are
48、available on the Current Standards Activities page at standardsactivities.csa.ca.ANSI NGV 3.1-2014 CSA 12.3-2014Fuel system components for compressed natural gas powered vehiclesMarch 2014 2014 CSA Group 14History of the development of NGV 3.1 CSA 12.3Note: This history is informative and is not par
49、t of the standard.In 1984 there was a growing need in the U.S. natural gas vehicle industry for guidelines pertaining to theassembly of aftermarket equipment installed on motor vehicles in order to operate alternatively oneither gasoline or natural gas. The American Gas Association Laboratories (AGAL), in response to thisneed developed an A.G.A. Requirement for Natural Gas Vehicle (CNG) Conversion Kits, No. 1-85. Thisrequirement was intended to help promote the safe development and installation of NGV conversionsystems by manufacture
