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QC/T 245-2017 PDF in English


QC/T 245-2017 (QC/T245-2017, QCT 245-2017, QCT245-2017)
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
QC/T 245-2017English150 Add to Cart 0-9 seconds. Auto-delivery. Technology requirements of fuel-gas system for CNG vehicles Valid
QC/T 245-2002English90 Add to Cart 0-9 seconds. Auto-delivery. Compressed natural gas vehicles dedicated device technology Obsolete
QC/T 245-1998English279 Add to Cart 3 days (Compressed natural gas vehicles require special equipment and installation) Obsolete
Standards related to (historical): QC/T 245-2017

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QC/T 245-2017: PDF in English (QCT 245-2017)

QC/T 245-2017 QC AUTOMOBILE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.080.01 T 47 Replacing QC/T 245-2002 Technology requirements for fuel-gas system for CNG vehicles ISSUED ON: JANUARY 09, 2017 IMPLEMENTED ON: JULY 01, 2017 Issued by: Ministry of Industry and Information Technology of PRC Table of Contents Announcement ... 3  Foreword ... 9  1 Scope ... 11  2 Normative references ... 11  3 Terms and definitions ... 12  4 Technical requirements ... 13  Announcement of Ministry of Industry and Information Technology of the People's Republic of China No.2, 2017 The Ministry of Industry and Information Technology approved 426 industry standards (see the annex for standard references, names, main content and dates of implementation) such as “Superconducting magnetic separator” including 249 mechanical industry standards, 42 automotive industry standards, 10 pharmaceutical industry standards, 106 light industry standards, 4 metallurgical industry standards, 2 chemical industry standards, 7 electronic industry standards, and 6 communications industry standards. The above mechanical industry standards were published by the Machinery Industry Press. Automotive industry standards were published by Science and Technology Literature Publishing House. Pharmaceutical equipment industry standards were published by China Planning Press. Light industry standards were published by China Light Industry Press. Metallurgical industry standards were published by Metallurgical Industry Press. Chemical industry standards were published by Chemical Press. Electronic industry standards were published by the Institute of Electronic Industry Standardization, Ministry of Industry and Information Technology. Communication industry standards were published by the People's Posts and Telecommunications Press. Annex: References, names and dates of implementation of 42 automotive industry standards. Ministry of Industry and Information Technology of the People's Republic of China January 9, 2017 Annex: References, names and dates of implementation of 42 automotive industry standards No. Standard reference Standard name Standard reference being substituted Date of implementation 250 QC/T 776-2017 Motor caravan QC/T 776-2007 2017-07-01 251 QC/T 1051-2017 Coach car 2017-07-01 252 QC/T 1052-2017 Communication vehicle 2017-07-01 253 QC/T 1053-2017 Concrete spraying vehicle 2017-07-01 254 QC/T 1054-2017 Tunnel cleaning vehicle 2017-07-01 255 QC/T 1055-2017 Drainage and rescue vehicle 2017-07-01 256 QC/T 218-2017 Technical specifications for steering column upper combined switch of automobile QC/T 218-1996 2017-07-01 257 QC/T 1056-2017 Technical requirements and test methods for automotive dual clutch automatic transmission assembly 2017-07-01 258 QC/T 245-2017 Technical specifications for isolated plant of compressed-natural- gas (CNG) automobile QC/T 245-2002 2017-07-01 259 QC/T 247-2017 Technical specifications for isolated plant of liquefied petroleum gas QC/T 247-2002 2017-07-01 260 QC/T 1057-2017 Car snow chains 2017-07-01 261 QC/T 1058-2017 Car fingerprint identification device 2017-07-01 273 QC/T 1060-2017 Automotive hexagonal flower flange bolts 2017-07-01 274 QC/T 1061-2017 Road transport lightweight fuel tank vehicle anti-overflow system 2017-07-01 275 QC/T 1062-2017 Road transport lightweight fuel tank vehicle unloading valve 2017-07-01 276 QC/T 1063-2017 Road transport lightweight fuel tank vehicle oil and gas recovery components 2017-07-01 277 QC/T 1064-2017 Road transport flammable liquid dangerous goods tank vehicle - breathing valve 2017-07-01 278 QC/T 1065-2017 Road transport flammable liquid dangerous goods tank vehicle - manhole cover 2017-07-01 279 QC/T 789-2017 Performance requirements and bench test methods of automobile electric vortex retarder assembly QC/T 789-2007 2017-07-01 280 QC/T 316-2017 Bench test methods of fatigue strength for automobile service brake QC/T 316-1999 2017-07-01 281 QC/T 201-2017 Nylon pipe joint size for automobile air brake QC/T 201-1995 2017-07-01 282 QC/T 1066-2017 Performance requirements of cable assembly for vehicle parking brakes and bench test method 2017-07-01 Technology requirements for fuel-gas system for CNG vehicles 1 Scope This standard specifies the definition and technical requirements of fuel-gas system for CNG vehicles (hereinafter referred to as fuel-gas systems). This standard applies to the fuel-gas systems that use compressed natural gas (hereinafter referred to as CNG) for automobiles that meets the requirements of GB 18047 and has a rated working pressure of 20 MPa. 2 Normative references The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 3765 Specification for bite type tube fittings GB 7258 Safety specifications for power-driven vehicles operating on roads GB 17258 Steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles GB 17926 Compressed natural gas cylinder valve for vehicle GB/T 14976 Seamless stainless steel pipes for fluid transport GB/T 17895 Natural gas vehicle and liquefied petroleum gas vehicle - Vocabulary GB 18047 Compressed natural gas as vehicle fuel GB/T 18363 Filling receptacle of CNG vehicle GB 19239 Mounting requirements of special equipment for gas vehicle GB/T 20735 Pressure regulator of CNG vehicles GB 24160 Hoop-wrapped composite cylinders with steel liner for the on- board storage of compressed natural gas as a fuel for automotive vehicles Ignition timing control device An adjusting device installed on a dual-purpose fuel vehicle to control different ignition advance angles required for gasoline and CNG fuels. 3.6 Leakage alarm device A device installed on a gas vehicle and sends out an alarm when it detects a gas leakage or exceeding a preset value. 4 Technical requirements 4.1 General requirements 4.1.1 The gas system shall be manufactured in accordance with product drawings and other technical documents approved by prescribed procedures. 4.1.2 The working environment temperature range that the gas system shall be able to adapt is as follows: a) Installed in the engine compartment, -40 °C ~ 120 °C; b) Install in other parts, -40 °C ~ 85 °C. 4.1.3 Parts of gas systems whose normal performance and safety functions are affected by CNG fuel characteristics, high pressure or vibration, need to comply with the relevant requirements of the corresponding parts standard. 4.1.4 The connection interface of gas system components shall meet the requirements of GB/T 3765 Specification for bite type tube fittings and other standards. The installation of gas system components on automobiles shall meet GB 7258 Safety specifications for power-driven vehicles operating on roads and GB 19239 Mounting requirements of special equipment for gas vehicle. 4.1.5 The components of gas system that are in contact with CNG shall be compatible with CNG. If the metal material used is ferrous metal, it shall take anticorrosive measures such as electroplating, chemical treatment or painting. The coating and chemical treatment layer shall conform to QC/T 625. 4.1.6 It is not allowed to fill the vehicle with CNG by replacing the gas cylinder. 4.2 System requirements 4.2.1 The gas system shall include at least the following components. k) Nozzle driver; 1) Ignition driver; m) Oxygen sensor; n) Camshaft (judging cylinder) phase sensor; o) Emulator; p) Speed sensor. 4.2.3 In one of the following situations, the gas system shall be able to automatically cut off the supply of CNG. a) The ignition switch is not turned on; b) The engine is not running; c) CNG fuel pipeline breaks, falls off, etc. 4.3 Component requirements 4.3.1 Filling receptacle At least one filling receptacle shall be installed on a CNG vehicle. The dust cover on the filling receptacle shall be easily fixed on the vehicle. The filling receptacle shall meet the requirements of GB/T 18363. 4.3.2 Gas cylinder 4.3.2.1 Steel gas cylinders shall comply with the provisions of GB 17258. Metal linear fiber wrapped gas cylinder for compressed natural gas for vehicles shall comply with the provisions of GB 24160. The gas cylinders shall be equipped with accessories such as gas cylinder valves and gas cylinder safety valves. The gas cylinder valves shall meet the requirements of GB 17926. 4.3.2.2 If necessary, it should install the accessories such as airtight boxes and ventilation pipes. 4.3.3 Gas pressure (volume) display The gas pressure (volume) display may use a pressure gauge or other gas volume display device. If a pressure gauge is used, the range of the pressure gauge shall be 1.5 ~ 3.0 times the rated working pressure of the gas storage system; it is recommended to use 2.0 times. When using other gas volume displays, it should use the pressure sensors and gas volume displays. 4.3.4 Manual stop valve ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.