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GB 15744-2019 PDF English (GB 15744-2008: Older version)Search result: GB 15744-2019 (GB 15744-2008 Older version)
GB15744-2019: PDF in EnglishGB 15744-2019 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.140 T 80 Replacing GB 15744-2008, GB 16486-2008 The Limits and Measurement Methods of Fuel Consumption for Motorcycles and Mopeds ISSUED ON: JULY 29, 2019 IMPLEMENTED ON: JULY 1, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3 1 Scope ... 7 2 Normative References ... 7 3 Terms and Definitions ... 7 4 Fuel Consumption Limits ... 8 5 Measurement Methods of Fuel Consumption ... 10 6 Type Expansion ... 20 7 Implementation of Standard ... 20 Appendix A (normative) Product Description ... 21 Appendix B (normative) Measurement Methods, Measuring Devices and Calculation Methods of Fuel Consumption ... 32 Appendix C (normative) Requirements for Type Expansion... 39 The Limits and Measurement Methods of Fuel Consumption for Motorcycles and Mopeds 1 Scope This Standard specifies the limits and measurement methods of fuel consumption for motorcycles and mopeds. This Standard is applicable to motorcycles and mopeds powered by spark ignition engines, as well as regular three-wheeled motorcycles powered by compression ignition engines. This Standard is inapplicable to vehicles that merely use gaseous fuels or alcohol fuels. 2 Normative References The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 5378 Methods of Road Test for Motorcycles and Mopeds GB 14622-2016 Limits and Measurement Methods for Motorcycle Pollutant Discharge (China stage IV) GB 18176-2016 Limits and Measurement Methods for Emissions of Pollutants from Mopeds (China stage IV) 3 Terms and Definitions What is defined in GB 14622-2016 and GB 18176-2016, and the following terms and definitions are applicable to this document. 3.1 Type I Test Type I test refers to the measurement of average fuel consumption of motorcycles and mopeds under specified operating cycle conditions. 3.2 Reference Speed Reference speed refers to the driving speed of regular three-wheeled motorcycles and 5.2.1.1 The manufacturer or its authorized agent shall submit product description documents in accordance with the requirements in Appendix A. 5.2.1.2 When testing on the chassis dynamometer, for the state of the test vehicle, motorcycles shall comply with the relevant stipulations of C.2.2 in GB 14622-2016; mopeds shall comply with the relevant stipulations of C.2.2 in GB 18176-2016. The vehicle classification of two-wheeled motorcycles shall comply with the relevant stipulations of C.2.3 in GB 14622-2016. For motorcycles with a sidecar, the sidecar part shall be removed, then, the motorcycles shall be tested as two-wheeled motorcycles. 5.2.1.3 When testing on the road, the load distribution of the front axle and the rear axle of the test vehicle shall comply with the requirements in the manufacturer’s technical documents. When a measuring instrument is installed on the test vehicle, its impact on the previous load distribution shall be minimized; the mass of the measuring instrument shall be included in the test record. 5.2.1.4 When a measuring instrument and vehicle speed sensor are installed outside the test vehicle, the additional air resistance shall be minimized as much as possible. 5.2.2 Driver When testing on the chassis dynamometer, the driver of motorcycles shall comply with the relevant stipulations of C.2.5.1 in GB 14622-2016; the driver of mopeds shall comply with the relevant stipulations of C.2.5.1 in GB 18176-2016. 5.2.3 Fuels and lubricants 5.2.3.1 Motorcycles shall use the fuels specified in Appendix H of GB 14622-2016. Mopeds shall use the fuels specified in Appendix H of GB 18176-2016. 5.2.3.2 The lubricants of engines shall be configurated in accordance with the grade and quantity requested in the manufacturer’s technical documents. 5.2.4 Environmental conditions 5.2.4.1 Test on chassis dynamometer The environmental conditions of the test on motorcycles shall comply with the stipulations of C.2.1 in GB 14622-2016; the environmental conditions of the test of mopeds shall comply with the stipulations of C.2.1 in GB 18176-2016. 5.2.4.2 Test on road The environmental conditions shall satisfy the following conditions: ---Relative humidity: not greater than 95%; gas sampling and volume measuring equipment, analysis equipment, instruments and measurement accuracy shall comply with the stipulations of C.2.5.3 ~ C.2.5.5 in GB 14622-2016. 5.3.3 Test procedures The test shall be conducted in accordance with the procedures specified in C.3 of GB 14622-2016. 5.3.4 Test result 5.3.4.1 The calculation methods for fuel consumption by different measuring devices are shown in B.3. When the method of carbon balance is used, in accordance with the emission result obtained from the calculation method of gaseous pollutant emission in C.4.4 of GB 14622-2016, calculate the fuel consumption by Formula (4); the result shall be expressed in (L/100 km). Where, FC---fuel consumption, expressed in (L/100 km); MHC---measured hydrocarbon emissions, expressed in (mg/km); MCO---measured carbon monoxide emissions, expressed in (mg/km); MCO2---measured carbon dioxide emissions, expressed in (mg/km); D---density of test fuel at 293 K (20 °C), expressed in (kg/L). 5.3.4.2 The completion of an entire operating cycle is one test, in which, the test results of fuel consumption of the first stage and the second stage of Type I vehicles are respectively defined as R11 and R12; the test results of fuel consumption of the first stage and the second stage of Type II vehicles are respectively defined as R21 and R22; the test results of fuel consumption of the first stage, the second stage and the third stage of Type III vehicles are respectively defined as R31, R32 and R33. The calculation rules of fuel consumption FCI of Type I test are shown in Table 6, in which, w is the weighting factor, and the specific values are shown in Table 7. 5.3.4.3 Fuel consumption shall be expressed in (L/100 km); the test result shall be rounded off to two decimal places. 5.4.2 Type II test 5.4.2.1 Test conditions 5.4.2.1.1 Before Type II test, the test vehicle shall go through warm-up driving, so as to reach the thermal state specified in the manufacturer’s technical documents. If this is not specified, the test vehicle shall complete Type I test, or normally drive for 15 min, then, receive Type II test. 5.4.2.1.2 The measurement of fuel consumption shall be carried out in accordance with one of the methods in Appendix B. 5.4.2.2 On-road measurement method 5.4.2.2.1 Driver and driving posture The requirements for the driver and driving posture are as follows: ---The driver shall wear protective clothing and a helmet. The height of the driver is 1.75 m ± 0.05 m; the weight is 75 kg ± 5 kg. ---When driving, the driver shall sit in the prescribed driving position; control the steering handle with both hands; place both feet on the pedals; normally extend both arms. During the measurement, the driver shall maintain the same posture. 6.4.2.2.2 Test road The requirements for the test road are as follows: ---The test road shall be a closed loop with a length of above 2,000 m and a minimum turning radius of above 200 mm, or, a straight road with a length of above 500 m and allows passage in both directions. ---The surface of the test road shall be covered with asphalt, pitch, concrete or equivalent materials. ---The test road shall be as level as possible; the longitudinal gradient is not allowed to exceed 1%, and the height difference between any two points is not allowed to exceed 1 m; the transverse gradient is not allowed to exceed 3%. ---The test road shall be flat, dry and tidy. ---The test area: 500 m. 5.4.2.3 Measurement method with chassis dynamometer 5.4.2.3.1 Chassis dynamometer shall be adjusted in accordance with C.3.2 in GB 14622-2016. 5.5.1 Type I test 5.5.1.1 Test cycle The test cycle of mopeds shall be set in accordance with the stipulations of C.2.5.6 and C.2.5.7 in GB 18176-2016; performed in accordance with the test cycle shown in Appendix CC of GB 18176-2016; the gear-shifting operation shall be set in accordance with C.2.5.8 of GB 18176-2016. 5.5.1.2 Test devices 5.5.1.2.1 Chassis dynamometer The main characteristics of chassis dynamometer shall comply with the stipulations of C.2.5.2 in GB 18176-2016. 5.5.1.2.2 Fuel consumption measuring device The measurement of fuel consumption shall be conducted in accordance with one of the methods in Appendix B. When the method of carbon balance is used, the exhaust gas sampling and volume measuring equipment, analysis equipment, instruments and measurement accuracy shall comply with the stipulations of C.2.5.3 ~ C.2.5.5 in GB 18176-2016. 5.5.1.3 Test procedures The test shall be conducted in accordance with the procedures specified in C.3 of GB 18176-2016. 5.5.1.4 Test result 5.5.1.4.1 The calculation methods for fuel consumption by different measuring devices are shown in B.3. When the method of carbon balance is used, in accordance with the emission result obtained from the calculation method of gaseous pollutant emission in C.4.4 of GB 18176-2016, calculate the fuel consumption by Formula (4) in 5.3.4.1; the result shall be expressed in (L/100 km). 5.5.1.4.2 The completion of 8 consecutive operating cycles is one test, in which, the first four sub-cycles are defined as the cold-state test cycle; the last four sub-cycles are defined as the hot-state test cycle; the test result of the cold-state test cycle is defined as RC; the test.......Source: https://www.ChineseStandard.net/PDF.aspx/GB15744-2019 |