标准编号:	GB/T 19233-2020
中文名称:	轻型汽车燃料消耗量试验方法
英文名称:	Measurement methods of fuel consumption for light-duty vehicles
行业分类:	GB    国家标准
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2020-06-02
实施日期:	2021-1-1
标准状态:	现行
替代旧标准:	GB/T 19233-2008 轻型汽车燃料消耗量试验方法
翻译语言:	英文
文件格式:	PDF
中文字符数:	26000 字
翻译价格(元):	1000.00 元
交付时间:	付款后 1 个工作日

This standard is developed in accordance with the rules given in GB/T 1.1-2009.



This standard replaces GB/T 19233-2008 Measurement methods of fuel consumption for light-duty vehicles. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 19233-2008:



——The scope of application of the standard has been modified from "This standard is applicable to such vehicles of Categories M1 and N1 with the maximum design speed greater than or equal to 50km/h and those of Category M2 with maximum mass less than 3,500kg as are powered by positive-ignition engines or compression-ignition engines" to "This standard is applicable to such vehicles of Category N1 with the maximum design speed greater than or equal to 50km/h and those of Categories M1 and M2 with maximum mass less than 3,500kg as are powered by positive-ignition engines or compression-ignition engines. Reference may be made to this standard for vehicles of Category M1 with maximum mass exceeding 3,500kg"; from "This standard is not applicable to vehicles that cannot burn gasoline or diesel oil” to "This standard is applicable to vehicles that can burn gasoline or diesel oil, and is not applicable to hybrid electric vehicles; reference may be made to this standard for vehicles burn other fuels” (see clause 1; clause 1 of Edition 2008).



——The test cycle has been modified from NEDC to WLTC and China automotive test cycle (see 4.3 and 6.1; 4.4 and 6.1 of Edition 2008).



——The requirements of laboratory environment, test vehicle, test fuel and test equipment have been modified (see clause 5; clause 5 of Edition 2008);



——The requirements for road load measurement and dynamometer setting, pretreatment and vehicle soak, test procedures and emission calculation have been modified (see 6.2~6.5; 6.2~6.3 of Edition 2008).



——The requirements for the use of transmission have been added, and the provision that vehicles with manual transmission operate according to the gear indicated by the gear shift indicator has been added (see 6.4.2).



——The fuel consumption calculation equation has been modified (see 7.2; 7.2 of Edition 2008);



——The method for determining the type approval value of vehicles of Categories M2 and N1 has been modified, and the deviation has been adjusted from 6% to 4% (see 7.5; 7.3 of Edition 2008).



——The adjustment method of adopting the fuel consumption result of each speed segment after the declaration of composite value by the manufacturer as the type approval value has been added (see 7.5).



——The fixed gradual change coefficient has been modified from 0.92 to 0.95 (see 8.1.3.4; 8.1.2.3 of Edition 2008).



——The type approval requirements of vehicles of Category N1 families have been deleted (see clause 10 of Edition 2008).



——The relevant requirements of test family have been added (see clause 10).



——The informative Annex A "Test method for fuel consumption in low temperature environment” has been added.



——The informative Annex B “Test method for fuel consumption when air conditioner is turned on for cooling” has been added.



——The informative Annex C “Test method for fuel consumption at high altitude” has been added.



——The informative Annex D “Calculation equation of fuel consumption of vehicles burning other types of fuels” has been added.



——The annex number of type test result report in normative annex has been modified (see Annex E; Annex A of Edition 2005).



This standard refers to part of the technical contents of ECER101-03 Uniform Provisions Concerning the Approval of Passenger Cars Equipped with Only an Internal Combustion Engine or Hybrid Electric Passenger Vehicles with regard to the Measurement of the Emission of Carbon Dioxide, Fuel Consumption, Electric Energy Consumption and Range and of Categories M1 And N1 Vehicles Equipped with an Electric Power Train with regard to the Measurement of Electric Energy Consumption and Range issued by the United Nations Economic Commission for Europe and the United Nations global technical regulation GTR15 Worldwide Harmonized Light Vehicles Test Procedure (WLTP) and its revision.



This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.



This standard is under the jurisdiction of SAC/T C114 National Technical Committee of Auto Standardization.



 

Drafting organizations of this standard: China Automotive Technology and Research Center Co., Ltd., Beiqi Foton Motor Co., Ltd., China FAW Group Co., Ltd., Chongqing Changan Automobile Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd., Chery Automobile Co., Ltd., China Automotive Engineering Research Institute Co., Ltd., SAIC Motor Technical Center, SAIC General Motors Corporation Limited, Dongfeng Motor Corporation Technical Center, BYD Auto Industry Company Limited, United Automotive Electronics Co., Ltd., European Automobile Manufacturers Association Beijing Office, BMW (China) Service Co., Ltd., Daimler Greater China Ltd. and Volkswagen (China) Investment Co., Ltd.



Chief drafters of this standard: Wang Zhao, Zheng Tianlei, Bao Xiang, Li Mengliang, Qian Guogang, Liu Gang, Liu Le, Jia Yu, Liu Yu, Fan Jiajia, Zou Xiaomin, Gao Haiyang, Gao Yue, Zhang Shuo, Jiang Ping, Dai Yongli, Xu Yueyun, Liu Zhichao, Deng Yangqing, Wang Qi, He Run, Long Jinshi, Ma Qizhen, Yan Zhen, Bai Zhuowei, Shen Tiejun, Gong Baoli, Tao Kan, Li Lifei, Shi Weili, Luo Wei, Song Yinan, Chen Xiaolu and Zhu Wenbo.



The previous editions of this standard are as follows:



——GB/T 19233-2003 and GB/T 19233-2008.









Measurement methods of fuel consumption for light-duty vehicles



1 Scope



This standard specifies the test and calculation methods for calculating fuel consumption by carbon balance method via measuring the emission of carbon dioxide (CO2), carbon monoxide (CO) and hydrocarbon (HC) of automobiles, as well as the inspection and judgment methods of production consistency.



This standard is applicable to such vehicles of Category N1 with the maximum design speed greater than or equal to 50km/h and those of Categories M1 and M2 with maximum mass less than 3,500kg as are powered by positive-ignition engines or compression-ignition engines. Reference may be made to this standard for vehicles of Category M1 with maximum mass exceeding 3,500kg.



This standard is applicable to vehicles that can burn gasoline or diesel oil, and is not applicable to hybrid electric vehicles; reference may be made to this standard for vehicles burn other fuels.



2 Normative references



The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.



GB/T 1884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method

GB/T 15089-2001 Classification of power-driven vehicles and trailers

GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6)

GB/T 38146.1-2019 China automotive test cycle - Part 1: Light-duty vehicles



 

3 Terms and definitions



For the purposes of this document, the terms and definitions given in GB/T 15089-2001, GB 18352.6-2016 and GB/T 38146.1-2019 as well as the following apply.



3.1



gear shift indicator; GSI



device installed on a manual transmission vehicle, which can remind the driver to adjust the gear in real time and intuitively



4 General requirements



4.1 Before the fuel consumption type test, the vehicle manufacturer or its authorized agent shall declare the comprehensive fuel consumption value of the tested vehicle type.



4.2 The vehicle manufacturer or its authorized agent shall submit a vehicle representing the tested vehicle type to the inspection body responsible for the type test. During the test, the inspection body shall confirm that the emission status of the vehicle meets the requirements of Type I test limit of the corresponding emission standard of the vehicle type.



4.3 The emission of CO2, CO and HC of vehicles shall be measured according to the worldwide harmonized light vehicles test cycle (WLTC) described in Appendix CA of GB 18352.6-2016 or the China automotive test cycle specified in Annex A of GB/T 38146.1-2019 (CLTC-P and CLTC-C, among which CLTC-P is applicable to vehicles of Category M1 and CLTC-C is applicable to vehicles of Category N1 and those of Category M2 with the maximum mass not exceeding 3,500kg).



Note: When measuring according to the China automotive test cycle, the test cycle in relevant clauses of GB 18352.6-2016 cited in this standard is adjusted accordingly to the China automotive test cycle.



4.4 The emission test results of CO2, CO and HC shall be expressed in grams per kilometer (g/km), and the CO2 value shall be rounded to two decimal places.



4.5 The fuel consumption shall be calculated by carbon balance method according to the calculation method in clause 7 using the measured CO2, CO and HC emissions. The calculation results shall be expressed in liters per 100 km (L/100km), and rounded to two decimal places.



4.6 The vehicle manufacturer or its authorized agent may measure the fuel consumption of vehicles in low temperature environment, when air conditioner is turn on for cooling and at high altitude by reference to Annexes A, B and C as required.



5 Test conditions



5.1 Environmental requirements and parameters



The laboratory environment shall meet those specified in C.1.2.2 of GB 18352.6-2016.



5.2 Test vehicle



5.2.1 All parts and components of the test vehicle shall meet the requirements of mass production. If the test vehicle state is different from the mass production state, it is necessary to provide a detailed description.



5.2.2 The vehicle manufacturer or its authorized agent shall submit a vehicle representing the tested vehicle type to the inspection body responsible for the type test. If the vehicle manufacturer or its authorized agent chooses to adopt interpolation family, the vehicles representative in interpolation family shall be selected and the same test vehicle should be selected to set the representative Vehicle H and Vehicle L through different road load.



5.2.3 The test vehicle may be subjected to running-in according to the requirements of the vehicle manufacturer or its authorized agent, and it shall be ensured that the mechanical condition is good, and that the running-in mileage does not exceed 15,000km.



5.2.4 The lubricants specified by the vehicle manufacturer shall be used and indicated in the test result report.



5.2.5 For others, the test vehicle settings shall be carried out according to those specified in C.1.2.4.2~C.1.2.4.5 and C.1.2.4.7 of GB 18352.6-20161).



5.3 Test fuel



5.3.1 During the type test, the equivalent fuel meeting the requirements of Annex K in GB 18352.6-2016 shall be adopted according to the lowest grade recommended by the vehicle manufacturer, and no additional oxygenates shall be added to the fuel. In the case of using fuel types not specified in Annex K of GB 18352.6-2016, commercial vehicle fuels that meet the requirements of the relevant national standards shall be used.



 

5.3.2 When carrying out the calculation mentioned in 4.5, the values of fuel parameters shall be as follows:



a) density: as per the density of test fuel measured in accordance with GB/T 1884;



b) hydrogen-carbon ratio: fixed value shall be adopted, which is 1.85 for gasoline and 1.86 for diesel oil.



5.4 Test equipment



Technical characteristics of test equipment shall meet those specified in Appendix CD of GB 18352.6-20161).



6 Measurement of CO2, CO and HC emissions



6.1 Test cycle



The test cycle may include four parts, i.e., Low, Medium, High and Extra High, as described in Appendix CA of GB 18352.6-2016, or it may include three parts, i.e., Slow (1), Medium (2) and Fast (3), as described in Annex A of GB/T 38146.1-2019. All provisions on the operation given in this appendix are applicable to the measurement of CO2, CO and HC emissions.



6.2 Road load measurement and dynamometer setting



The road load measurement and the setting of dynamometer shall be in accordance with Appendix CC of GB 18352.6-20161). If the running resistance curve is provided by the vehicle manufacturer, a test report, calculation report or other relevant information shall be provided at the same time, and be confirmed by the inspection body.



During arbitration test, the running resistance of the vehicle shall be determined in accordance with those specified in CC.4.3 of GB 18352.6-2016.



6.3 Pre-test cycle, pretreatment and vehicle soak



The pre-test cycle, test vehicle pretreatment and vehicle soak shall be carried out in accordance with those specified in C.1.2.5~C.1.2.7 of GB 18352.6-20161).



6.4 Test procedure



6.4.1 General requirements



The test shall be conducted in accordance with those specified in C.1.2.8~C.1.2.14 of GB 18352.6-2016.



6.4.2 Use of transmission



6.4.2.1 The transmission shall be operated in accordance with those specified in C.1.2.6.5 of GB 18352.6-20161). Automatic transmission vehicles without a master mode shall be tested in the worst shift mode, i.e., the mode with the highest fuel consumption, which shall be determined based on fuel consumption in all modes.



6.4.2.2 For manual transmission vehicle equipped with a gear shift indicator, upon the application of the manufacturer, the gear operation can be conducted in accordance with the gears indicated by the gear shift indicator as required by the manufacturer, while the results of the emission test shall meet the limit requirements of Type I test specified in corresponding emission standards for this type of vehicle. For gear shift indicator with upshift prompts only, the operation shall be carried out in accordance with C.1.2.6.5 of GB 18352.6-2016 during deceleration1). The manufacturer shall provide a description document specifying the indicating method, function, use method, and control strategy of the gear shift indicator before the test, and ensure that the gear shift indicator control strategy of the produced vehicle is consistent with that of the vehicle under test.



6.5 Emission calculation



The emissions of CO2, CO and HC shall be calculated in accordance with those specified in Appendix CE of GB 18352.6-20161).



7 Calculation of fuel consumption



7.1 The fuel consumption at each speed segment and the combined fuel consumption shall be calculated respectively using the HC, CO, and CO2 emissions obtained by the method in clause 6.



7.2 The fuel consumption, expressed in L/100km, shall be calculated using Equations (1) and (2):



a) For vehicles with petrol engines:



FC= [(0.866×HC)+(0.429×CO)+(0.273×CO2)] (1)



 

b) For vehicles with diesel engines:



FC= [(0.865×HC)+(0.429×CO)+(0.273×CO2)] (2)



where,



FC——the fuel consumption, L/100km;



HC——the emission of hydrocarbon, g/km;



CO——the emission of carbon monoxide, g/km;



CO2——the emission of carbon dioxide, g/km;



D——the density of test fuel at 288K(15℃), kg/L.



7.3 Except for gasoline and diesel vehicles, the fuel consumption of vehicles powered by other types of fuels may be calculated with reference to Annex D.



7.4 Correction of calculated fuel consumption obtained by non-type tests or non-production conformity tests without using reference fuel:



a) If the hydrogen-carbon ratio of gasoline and diesel used is not a fixed value, it is allowed to be corrected2).



b) If ethanol-added gasoline (E10) or gasoline with more than 10% of methyl tertiary butyl ether (MTBE) is adopted, and the effect of oxygen on the percentage of carbon in the fuel and the change in fuel density have been considered in the test calculation, the calculated fuel consumption can be multiplied by 97% or 98%, respectively, and the results thus obtained are used as the calculated value.



7.5 Type approval value shall be determined according to the following methods:



a) If the difference between the composite value of fuel consumption calculated through measurement by the inspection body and the composite value declared by the vehicle manufacturer satisfies Equation (3), the composite value declared shall be taken as the type approval value.



(3)



where,



FCMC——the composite value of fuel consumption calculated through measurement by the inspection body, L/100km;



FCDC——the composite value of fuel consumption declared by the vehicle manufacturer, L/100km.



b) If the result obtained from the above equation is >+4%, another test shall be carried out for the vehicle.



If, after the two tests, the difference between the composite average of fuel consumption calculated through the two measurements and the composite value declared by the vehicle manufacturer satisfies Equation (4), the composite value declared by the vehicle manufacturer shall be taken as the type approval value.



(4)



where,



FCMC ave——the composite average of fuel consumption calculated through the two measurements, L/100km.



c) If the result obtained by the composite average calculated through the two measurements is still >+4%, a final test shall be carried out for the vehicle. The composite average of results obtained from three tests shall be taken as the type approval value.



d) After the first or second test, if the fuel consumption result fails to meet the requirements, the higher value measured may be used as the type approval value as required by the vehicle manufacturer and approved by the department in charge of fuel consumption.



e) No changes or adjustments to the engine or vehicle are allowed during multiple tests.



f) If the emission type test conducted in parallel with the fuel consumption test is required to be conducted more than once, the fuel consumption obtained from the subsequent emission tests will no longer be considered as long as the type approval value of the fuel consumption has been determined.



g) If the composite value declared by the vehicle manufacturer is adopted as the type approval value, the arithmetic average of the fuel consumption results (L/100km) of each speed segment obtained by the test shall be multiplied by the adjustment factor FC_AF, as shown in Equation (5):



(5)



where,



FCave c——the composite value of each speed range obtained by measurement and calculation, which shall be calculated using Equation (6), L/100km;



(6)



where,



N——the number of speed segments for the test cycle, which is 4 for WLTC cycle, and 3 for China automotive test cycle;



FCave i——the arithmetic average of fuel consumption of the i-th speed segment, L/100km;



Di——the theoretical driving distance of the i-th speed segment, km.



h) If the composite value declared by the vehicle manufacturer is not adopted as the type approval value, the type approval value of the fuel consumption of each speed segment shall be calculated based on the arithmetic average of the fuel consumption test results of the corresponding speed segment.



7.6 See Annex E for the format of the report for the result of the type test.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Test conditions
6 Measurement of CO2, CO and HC emissions
7 Calculation of fuel consumption
8 Production conformity
9 Certification extension
10 Test family
Annex A (Informative) Method for testing fuel consumption in low temperature environment
Annex B (Informative) Test method for fuel consumption when air conditioner is turned on for cooling
Annex C (Informative) Test method for fuel consumption at high altitude
Annex D (Informative) Calculation equation of fuel consumption of vehicles burning other types of fuels
Annex E (Normative) Type test result report
Bibliography

轻型汽车燃料消耗量试验方法
1 范围
本标准规定了通过测定汽车二氧化碳(CO2)、一氧化碳(CO)和碳氢化合物(HC)排放量，用碳平衡法计算燃料消耗量的试验、计算方法以及生产一致性的检查和判定方法。
本标准适用于以点燃式发动机或压燃式发动机为动力，最大设计车速大于或等于50km/h的N1类和最大设计总质量不超过3500kg的M1、M2类车辆。最大设计总质量超过3500kg的M1类车辆可参照执行。
本标准适用于能够燃用汽油或柴油的车辆，不适用于混合动力电动汽车；其他燃料类型车辆可参照执行。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
GB/T 1884 原油和液体石油产品密度实验室测定法(密度计法)
GB/T 15089—2001 机动车辆及挂车分类
GB 18352.6—2016 轻型汽车污染物排放限值及测量方法(中国第六阶段)
GB/T 38146.1—2019 中国汽车行驶工况 第1部分：轻型汽车
3 术语和定义
GB/T 15089—2001、GB 18352.6—2016和GB/T 38146.1—2019界定的以及下列术语和定义适用于本文件。
3.1
换挡提醒装置 gear shift indicator; GSI
装配于手动挡车辆的可实时、直观地提醒驾驶员调整挡位的装置。
4 一般要求
4.1 在进行燃料消耗量型式试验前，汽车生产企业或其授权代理者应申报被试车型综合燃料消耗量值。
4.2 汽车生产企业或其授权代理者应将一辆代表被试车型的车辆提交给负责型式试验的检验机构。
在试验期间，检验机构应确认车辆的排放状况符合该车型相应排放标准的I型试验限值要求。
4.3按照GB 18352.6—2016中附件CA所述的全球统一轻型车测试循环(WLTC)或GB/T 38146.1—2019中附录A规定的中国汽车行驶工况(CLTC-P和CLTC-C，其中CLTC-P适用于M1类车辆，CLTC-C适用于N1类和最大设计总质量不超过3500kg的M2类车辆)，测量车辆的CO2、CO和HC排放量。


注：当按照中国汽车行驶工况进行测量时，本标准所引用GB 18352.6—2016相关条款中的试验循环相应调整为中国汽车行驶工况。


4.4 CO2、CO和HC的排放测试结果用克每千米(g/km)表示，CO2值圆整(四舍五入)至小数点后
两位。
4.5 按照第7章的计算方法，利用测得的CO2、CO和HC排放量，以碳平衡法计算燃料消耗量。计算结果用升每100千米(L/100km)表示，圆整(四舍五入)至小数点后两位。
4.6 汽车生产企业或其授权代理者可根据需要参照附录A、附录B、附录C测量车辆在低温环境、开启空调制冷状态和高海拔环境下的燃料消耗量。
5 试验条件
5.1 环境要求和参数
试验室环境应符合GB 18352.6—2016中C.1.2.2的要求。
5.2 试验车辆
5.2.1 试验车辆的所有零部件应满足批量生产要求。如果试验车辆与批量生产状态不同，需要提供详细的说明。
5.2.2 汽车生产企业或其授权代理者应将一辆代表被试车型的车辆提交给负责型式试验的检验机构。若汽车生产企业或其授权代理者选择采用插值系族，应选取在插值系族中具有代表性的车辆，宜采用同一试验车辆通过不同道路载荷设定代表车辆H和车辆L。
5.2.3 试验车辆可根据汽车生产企业或其授权代理者需求进行磨合，并保证机械状况良好，磨合里程不超过15000km。
5.2.4 应使用汽车生产企业规定的润滑剂，并在试验结果报告中注明。
5.2.5 其他按照GB 18352.6—2016中C.1.2.4.2～ C.1.2.4.5和C.1.2.4.7要求进行试验车辆设置1)。


1)GB 18352.6—2016相关引用条款中，“环境保护主管部门”在本标准中相应指代“汽车燃料消耗量主管部门”；“CO2排放”相应指代“燃料消耗量”。


5.3 试验燃料
5.3.1 型式试验时应按照汽车生产企业推荐的最低标号，采用符合GB 18352.6—2016中附录K要求的基准燃料，燃料中不准许额外添加含氧物。采用GB 18352.6—2016中附录K中未规定的燃料种类时，应采用符合相关国家标准规定的市售车用燃料。
5.3.2 进行4.5所述计算时，燃料参数取值如下：
a)密度：按照GB/T 1884的方法测得试验燃料的密度；
b)氢-碳比：采用固定值，汽油为1.85，柴油为1.86。
5.4 测试设备
测试设备技术特性应符合GB 18352.6—2016 中附件CD的规定1)。
6 CO2、CO和HC排放量测量
6.1 试验循环
试验循环如GB 18352.6—2016 中附件CA所述，包括低速段(Low)、中速段(Medium)、高速段(High)和超高速段(Extra High)四部分；或如GB/T 38146.1—2019中附录A所述，包括低速(1部)、中速(2部)和高速(3部)三部分。此附件中所有运行规定均适用于CO2、CO和HC排放量的测量。
6.2 道路载荷测量与测功机设定
按GB 18352.6—2016中附件CC进行道路载荷测量与测功机设定1)。如行驶阻力曲线由汽车生产企业提供，需要提供试验报告、计算报告或其他相关资料，并由检验机构确认。
仲裁试验时，应按GB 18352.6—2016中CC.4.3规定确定车辆的行驶阻力。
6.3 预试验循环、预处理和浸车
按照GB 18352.6—2016中C.1.2.5～C.1.2.7的规定进行预试验循环、试验车辆预处理和浸车1)。
6.4 试验规程
6.4.1 一般要求
按照GB 18352.6—2016中C.1.2.8～C.1.2.14的规定进行试验。
6.4.2 变速器的使用
6.4.2.1 变速器应根据GB 18352.6—2016中C.1.2.6.5的规定进行操作1)。其中，对于没有主模式的自动变速器车辆，车辆应在最差的换挡模式下进行试验。最差模式为燃料消耗量最高的模式，应根据所有模式中燃料消耗量情况进行确定。
6.4.2.2 对于装配有换挡提醒装置的手动挡变速器车辆，在生产企业申请时，可按照生产企业要求按照换挡提醒装置所指示的挡位进行换挡操作，同时排放测试结果也应符合该车型相应排放标准的I型试验限值要求。对于仅有升挡提示的换挡提醒装置，减速过程中按照GB 18352.6—2016中C.1.2.6.5的规定进行操作1)。生产企业应在试验前提供换挡提醒装置指示方式、功能、使用方法、控制策略的说明资料，同时保证所生产车辆与被试车辆换挡提醒装置控制策略相一致。
6.5 排放量计算
按照GB 18352.6—2016中附件CE的规定计算CO2、CO和HC排放量1)。
7 计算燃料消耗量
7.1 用第6章方法得到的HC、CO和CO2排放量，分别计算各速度段和综合燃料消耗量。
7.2 采用式(1)和式(2)计算燃料消耗量，单位为升每100千米(L/100km)：
a)对于装备汽油机的车辆：
FC= [(0.866×HC)＋(0.429×CO)＋ (0.273×CO2)] (1)
b)对于装备柴油机的车辆：
FC= [(0.865×HC)＋(0.429×CO)＋(0.273×CO2)] (2)
式中：
FC——燃料消耗量，单位为升每100千米(L/100km)；
HC——碳氢排放量，单位为克每千米(g/km)；
CO——一氧化碳排放量，单位为克每千米(g/km)；
CO2——二氧化碳排放量，单位为克每千米(g/km)；
D——288K(15℃)下试验燃料的密度，单位为千克每升(kg/L)。
7.3 除汽、柴油车辆外，其他燃料类型车辆可参照附录D计算燃料消耗量。
7.4 对于非型式试验或非生产一致性试验且没有使用基准燃料时燃料消耗量计算值的修正：
a)如果所使用的汽、柴油氢-碳比不是固定值，允许进行修正2)。


2)式(1)和式(2)中的系数0.1155 和0.1156 是由公式 计算获得，允许将实测氢-碳比代入此式求得新系数，按新系数进行燃料消耗量计算。由于HC排放量仅为CO2排放量的1‰ ～2‰，在计算燃料消耗量中影响甚微，可以忽略因为氢-碳比的变化引起的HC中碳量变化对计算结果的影响。


b)如果使用了乙醇汽油E10或添加了10％以上甲基叔丁基醚(MTBE)的汽油，且试验计算中已考虑了氧对燃料中碳比例的影响和燃料密度的变化，计算得到的燃料消耗量可以分别乘以
97％或98％作为计算值。
7.5 型式认证值按照以下方法确定：
a)如检验机构测量计算的燃料消耗量综合值与汽车生产企业申报的综合值之差符合式(3)的规定，则将申报综合值作为型式认证值。
(3)
式中：
FCMC——检验机构测量计算的燃料消耗量综合值，单位为升每100千米(L/100km)；
FCDC——汽车生产企业申报的燃料消耗量综合值，单位为升每100千米(L/100km)。
b)如果上式的结果＞＋4％，则在该车辆上进行另一次试验。
两次试验后，如果两次测量计算的燃料消耗量综合平均值与汽车生产企业申报的综合值之差符合式(4)的规定，则将汽车生产企业的申报综合值作为型式认证值。
(4)
式中：
FCMCave——两次测量计算的燃料消耗量综合平均值，单位为升每100千米(L/100km)。
c)如果按两次测量计算的综合平均值得到的结果仍＞＋4％，则在该车辆上进行一次最终试验。将三次试验的测量计算结果的综合平均值作为型式认证值。
d)第一次或第二次试验后，如燃料消耗量结果不能满足要求，但汽车生产企业要求并经燃料消耗量主管部门同意后，可采用实测的较高值作为型式认证值。
e)多次试验过程中不允许对发动机或车辆作任何改动或调整。
f)如果与燃料消耗量试验同时进行的排放型式试验需要进行一次以上，只要已经能确定了燃料消耗量的型式认证值，则不再考虑随后排放试验所得到的燃料消耗量。
g)如果型式认证值采用汽车生产企业提交的申报综合值，测试得到的各速度段的燃料消耗量结果(L/100km)的算术平均值应乘以调节因子FC_AF，见式(5)：
(5)
式中：
FCavec——测量计算各区间综合值，按照式(6)计算，单位为升每100千米(L/100km)：
(6)
式中：
N——试验循环速度段的数量，WLTC循环为4，中国汽车行驶工况为3；
FCavei——第i速度段燃料消耗量的算术平均值，单位为升每100千米(L/100km)；
Di——第i速度段的理论行驶距离，单位为千米(km)。
h)如果型式认证值没有采用汽车生产企业提交的申报综合值，各速度段的燃料消耗量的型式认证值根据相应速度段的燃料消耗量试验结果的算术平均值计算。
7.6 型式试验结果报告的格式见附录E。