GB/T 12547-2009 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB/T 12547-2009: Minimum stable speed test method for motor vehicles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 12547: Historical versions
Similar standardsGB/T 12547-2009: Minimum stable speed test method for motor vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT12547-2009GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.020 T 04 Replacing GB/T 12547-1990 Minimum Stable Speed Test Method for Motor Vehicles Issued on. MARCH 23, 2009 Implemented on. JANUARY 1, 2010 Issued by. General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ); Standardization Administration (SAC) of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative References... 4 3 Terms and Definitions... 4 4.Test conditions... 4 5 Test Procedures... 5 6 Test Results... 6 Annex A... 7ForewordThis standard replaces GB/T 12547-1990 "Motor vehicles - Minimum stable speed - Test method". Main differences between this standard and GB/T 12547-1990 are as follows. -- Definition of minimum stable speed is added; -- Existing velocity measurement instruments are adopted; -- Contents of test conditions are added; -- Contents of testing procedures are modified. Appendix A of this standard is informative. This standard was proposed by the National Development and Reform Commission. This standard shall be under the jurisdiction of the National Technical Committee 114 on Road Vehicles of Standardization Administration of China. Drafting organizations of this standard. National Automobile Quality Supervision Testing Center (Xiangfan) and China Automotive Technology & Research Center. Chief drafting staffs of this standard. Zhu Xin, Zhan Yongmao, Wang Zuguo, Chen Jiaxin and Wang Xueping. The previous edition replaced by this standard is as follows. -- GB/T 12547-1990. Minimum Stable Speed Test Method for Motor Vehicles1 ScopeThis standard specifies the minimum stable speed test method for motor vehicles. This standard is applicable to all kinds of motor vehicles. Automobile train may be implemented by reference to this standard.2 Normative ReferencesThe following referenced documents are indispensable for the application of this document. For dated reference, subsequent amendments (excluding corrigendum) or revisions of these publications do not apply. However, all parties who enter into an agreement according to this standard are encouraged to study whether the latest edition of this document is applicable. For undated references, the latest editions of the normative documents are applicable to this standard. GB/T 12534 Motor Vehicles - General Rules of Road Test Method GB/T 12543 Motor Vehicles - Acceleration Performance - Test Method GB/T 12677 Motor vehicles - Technical condition - Inspection methods3 Terms and DefinitionsFor the purposes of this standard, the following terms and definitions apply. 4. Test conditions 4.1 Measuring instruments Requirements on measuring instruments for testing are as follows. 4.2 Test site The testing shall be carried out on straight-way of flat hard surface (asphalt or cement); the length of the straightway shall not be less than 1km, the width shall not be less than 8m; the longitudinal gradient shall not be greater than 0.1%; and the road surface shall be dry and clean. 4.3 Meteorological conditions It shall be fine day or cloudy day without fog; the relative humidity shall be less than 95%; air temperature is between 0~40Ԩ; and air velocity is not greater than 3m/s. 4.4 Test load Test load shall be in accordance with those specified in GB/T 12543.5 Test Procedures5.1 Place the transmission and transfer case (if any) of the test vehicle at the required gear position; starting from idling speed of the motor to make the motor vehicle maintained in a lower stable travelling speed through the test road section; and then observe the speed through velocity measurement instrument or speed travel measuring device; determine its actual average speed when the motor vehicle is through 100 m test road section. 5.2 Where the motor vehicle is pulling out of the test road section, accelerator pedal shall be pressed immediately and rapidly; and at this time, the motor shall not be stalled and transmitting mechanism shall not be vibrated, the motor vehicle is able to be in stable and continuous acceleration, and the corresponding engine speed shall not be declined.6 Test Results6.1 Arithmetic average of the actual measurement speed shall be taken as the minimum stable speed in this gear position of this motor vehicle. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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