Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this standard are compulsory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 15744-2008 The limits and measurement methods of fuel consumption for motorcycles and GB 16486-2008 The limits and measurement methods of fuel consumption for mopeds.
In addition to a number of editorial changes, the following technical changes have been made with respect to GB 15744-2008:
——the application scope is modified: "not applicable to the vehicles only consuming gas fuel or alcohol fuel" is added, "except racing vehicles and off-road vehicles" is deleted (see Clause 1 hereof; Clause 1 of Edition 2008);
——the normative references are modified (see Clause 2 hereof; Clause 2 of Edition 2008);
——the terms and definitions of "Type I test" and "Type II test" are added (see Sub-clauses 3.1 and 3.3 hereof);
——the definition of “reference speed” is modified (see Sub-clause 3.2 hereof; Sub-clause 3.1 of Edition 2008);
——the calculation method of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles is modified (see Sub-clause 4.1.1 hereof; Sub-clause 8.1 of Edition 2008);
——the limits of fuel consumption for motorcycles and corresponding engine displacement range are modified (see Tables 1 and 3 hereof; Tables 3 and 4 of Edition 2008);
——the limits of fuel consumption for two-wheeled motorcycles with spark-ignition engine (equipped with automatic transmission) are added (see Table 2 hereof);
——the limits of fuel consumption for right three-wheeled motorcycles with compression-ignition engine are added (see Sub-clause 4.2.2 hereof);
——the calculation method of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles is modified (see Sub-clause 5.1.1 hereof; Sub-clause 4.1 of Edition 2008);
——the requirements for the test vehicle status and vehicle classification when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.1.2 hereof; Sub-clauses 5.1.2, 5.1.3, 5.1.4 and 5.1.5 of Edition 2008);
——the requirements for pre-heating traveling of two-wheeled motorcycles and side three-wheeled motorcycles are deleted (see Sub-clause 5.1. 6 of Edition 2008);
——the requirements for drivers when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.2 hereof; Sub-clause 5.1.7 of Edition 2008);
——the requirements for motorcycle fuel and lubricating oil are modified (see Sub-clause 5.2.3 hereof; Sub-clause 5.2 of Edition 2008);
——the requirements for environmental conditions are modified (see Sub-clause 5.2.4 hereof; Sub-clauses 4.2 and 4.3 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of fuel consumption measurement of two-wheeled motorcycles are modified (see Sub-clauses 5.3.1, 5.3.2, 5.3.3 and 5.3.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of Type I test for fuel consumption measurement of right three-wheeled motorcycles were modified (see Sub-clauses 5.4.1.1, 5.4.1.2, 5.4.1.3 and 5.4.1.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for pre-heating traveling of right three-wheeled motorcycles are modified (see Sub-clause 5.4.2.1.1 hereof; Sub-clause 5.1.6 of Edition 2008);
——the requirements for the measurement method of Type II test chassis dynamometer for right three-wheeled motorcycles are added (see Sub-clause 5.4.2.3 hereof);
——the requirements for the fuel consumption measurement of Type II test chassis dynamometer for right three-wheeled motorcycles are added (see Sub-clause 5.4.2.4.2.2 hereof);
——the requirements for product description are modified (see Annex A hereof; Annex A of Edition 2008);
——the measurement methods, measurement devices and calculation methods of fuel consumption are modified (see Annex B hereof; Annex B of Edition 2008);
——the requirements for type extension are added (see Annex C hereof).
In addition to a number of editorial changes, the following technical changes have been made with respect to GB 16486-2008:
——the application scope is modified: "not applicable to the vehicles only consuming gas fuel or alcohol fuel" is added, "except racing vehicles and off-road vehicles" is deleted (see Clause 1 hereof, Clause 1 of Edition 2008);
——the normative references are modified (see Clause 2 hereof, Clause 2 of Edition 2008);
——the terms and definitions of "Type I test" and "Type II test" are added (see Sub-clauses 3.1 and 3.3);
——the definition of “reference speed” is modified (see Sub-clause 3.2 hereof; Sub-clause 3.1 of Edition 2008);
——the limits of fuel consumption for mopeds are modified (see Tables 4 and 5 hereof; Tables 2 and 3 of Edition 2008);
——the requirements for the test vehicle status and vehicle classification when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.1.2 hereof; Sub-clauses 5.1.2, 5.1.3, 5.1.4 and 5.1.5 of Edition 2008);
——the requirements for drivers when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.2 hereof; Sub-clause 5.1.7 of Edition 2008);
——the requirements for the fuel and lubricating oil for mopeds are modified (see Sub-clause 5.2.3 hereof; Sub-clause 5.2 of Edition 2008);
——the requirements for environmental conditions are modified (see Sub-clause 5.2.4 hereof; Sub-clauses 4.2 and 4.3 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of Type I test for the mopeds are modified (see Sub-clauses 5.5.1.1, 5.5.1.2, 5.5.1.3 and 5.5.1.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for pre-heating traveling of mopeds are modified (see Sub-clause 5.5.2.1.1 hereof; Sub-clause 5.1. 6 of Edition 2008);
——the requirements for the measurement method of Type II test chassis dynamometer for mopeds are added (see Sub-clause 5.5.2.3 hereof);
——the requirements for the fuel consumption measurement of Type II test chassis dynamometer for mopeds are added (see Sub-clause 5.5.2.4.2 hereof);
——the requirements for product description are modified (see Annex A hereof; Annex A of Edition 2008);
——the measurement methods, measurement devices and calculation methods of fuel consumption are modified (see Annex B hereof; Annex B of Edition 2008);
——the requirements for type extension are added (see Annex C hereof).
This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
This standard replaces GB 15744-2008 and GB 16486-2008.
The previous editions of GB 15744-2008 are as follows:
——GB 5377-1985;
——GB/T 15744-1995;
——GB/T 16486-1996.
The previous editions of GB 16486-2008 are as follows:
——GB 4567-1984;
——GB/T 15744-1995;
——GB/T 16486-1996.
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 and right three-wheeled motorcycles powered by compression-ignition engines.
This standard is not applicable to the vehicles only consuming gas fuel or alcohol fuel.
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 5378 Methods of road test for motorcycles and mopeds
GB 14622-2016 Limits and measurement methods for emissions from motorcycles (China IV)
GB 18176-2016 Limits and measurement methods for emissions of pollutants from mopeds (China IV)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 14622-2016 and GB 18176-2016 and the following apply.
3.1
Type I test
measurement of the average fuel consumption for motorcycles and mopeds under specified operating cycle conditions
3.2
reference speed
the traveling speed of right three-wheeled motorcycles and mopeds when carrying out fuel consumption test (Type II test)
3.3
Type II test
measurement of the average fuel consumption for right three-wheeled motorcycles and mopeds under specified reference speed conditions
4 Limits of fuel consumption
4.1 Calculation methods
4.1.1 Calculation method for fuel consumption of two-wheeled motorcycles and side three-wheeled motorcycles
Fuel consumption FC of two-wheeled motorcycles and side three-wheeled motorcycles is calculated according to Formula (1).
FC=FCI (1)
Where,
FCI——the fuel consumption measured through Type I test, L/100 km;
4.1.2 Calculation method for fuel consumption of right three-wheeled motorcycles and mopeds
Fuel consumption FC of right three-wheeled motorcycles and mopeds is calculated according to Formula (2).
FC=0.6×FCI+0.4×FCII (2)
Where,
FCI——the fuel consumption measured through Type I test, L/100 km;
FCII——the fuel consumption measured through Type II test, L/100 km.
4.2 Limits
4.2.1 For two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines, where manual (foot-operated) transmission is adopted, the limits are shown in Table 1; where automatic transmission is adopted, the limits are shown in Table 2.
Table 1 Limits of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines [with manual (foot-operated) transmission]
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300 ≥300~400 ≥400~500
Limits of fuel consumption/(L/100 km) 2.0 2.3 2.5 2.8 3.6 4.3 4.8
Actual engine displacement/mL ≥500~650 ≥650~800 ≥800~1,000 ≥1,000~1,250 ≥1,250~1,500 ≥1,500 —
Limits of fuel consumption/(L/100 km) 5.3 5.6 5.8 6.0 6.3 6.5 —
Table 2 Limits of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines [with automatic transmission]
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300 ≥300~400 ≥400~500
Limits of fuel consumption/(L/100 km) 2.1 2.5 2.7 3.0 3.9 4.6 5.1
Actual engine displacement/mL ≥500~650 ≥650~800 ≥800~1,000 ≥1,000~1,250 ≥1,250~1,500 ≥1,500 —
Limits of fuel consumption/(L/100 km) 5.6 5.9 6.1 6.3 6.6 6.8 —
4.2.2 For right three-wheeled motorcycles with spark-ignition engines, the limits are shown in Table 3. Limit of fuel consumption for right three-wheeled motorcycles with compression-ignition engines is equivalent to that of right three-wheeled motorcycles with spark-ignition engines divided by 1.2, and is rounded to one decimal place.
Table 3 Limits of fuel consumption for right three-wheeled motorcycles with spark-ignition engines
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300
Limits of fuel consumption/(L/100 km) 3.0 3.5 3.8 4.3 5.0
Actual engine displacement/mL ≥300~400 ≥400~500 ≥500~650 ≥650~800 ≥800
Limits of fuel consumption/(L/100 km) 6.0 6.5 7.0 7.5 8.0
4.2.3 Limits of fuel consumption for mopeds are shown in Tables 4 and 5.
Table 4 Limits of fuel consumption for two-wheeled mopeds
Actual engine displacement/mL ≤50
Limits of fuel consumption/(L/100 km) 1.8
Table 5 Limits of fuel consumption for right three-wheeled mopeds
Actual engine displacement/mL ≤50
Limits of fuel consumption/(L/100 km) 2.1
5 Measurement methods of fuel consumption
5.1 Test types
5.1.1 Only Type I test shall be conducted for two-wheeled motorcycles and side three-wheeled motorcycles.
5.1.2 Both Type I test and Type II test shall be conducted for two-wheeled mopeds, right three-wheeled mopeds and right three-wheeled motorcycles.
5.1.3 Type I test is completed on chassis dynamometer, while Type II test is completed on road or chassis dynamometer.
5.2 General requirements
5.2.1 Test vehicle
5.2.1.1 The manufacturer or its authorized agent shall submit product description information in accordance with those specified in Annex A.
5.2.1.2 In case of test on chassis dynamometer, the status of test motorcycle shall meet relevant requirements of C.2.2 in GB 14622-2016 while that of test moped shall meet relevant requirements of C.2.2 in GB 18176-2016. The classification of two-wheeled motorcycles shall conform to the relevant requirements of C.2.3 in GB 14622-2016. The sidecar shall be dismantled and the side three-wheeled motorcycles shall be tested as the two-wheeled motorcycles.
5.2.1.3 In case of test on road, the load distribution of front axle and rear axle of the test vehicle shall meet the requirements of the manufacturer's technical document. As for the measurement device installed on the test vehicle, its effect on the original load distribution shall be minimized and its mass shall be included in the test record.
5.2.1.4 Where measurement device and speed sensor are installed on outer side of the test vehicle, the additional air resistance shall be minimized as possible.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Limits of fuel consumption
5 Measurement methods of fuel consumption
6 Model extension
7 Standard implementation
Annex A (Normative) Product description
Annex B (Normative) Measurement methods, devices and calculation methods of fuel consumption
Annex C (Normative) Requirements for type extension
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this standard are compulsory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 15744-2008 The limits and measurement methods of fuel consumption for motorcycles and GB 16486-2008 The limits and measurement methods of fuel consumption for mopeds.
In addition to a number of editorial changes, the following technical changes have been made with respect to GB 15744-2008:
——the application scope is modified: "not applicable to the vehicles only consuming gas fuel or alcohol fuel" is added, "except racing vehicles and off-road vehicles" is deleted (see Clause 1 hereof; Clause 1 of Edition 2008);
——the normative references are modified (see Clause 2 hereof; Clause 2 of Edition 2008);
——the terms and definitions of "Type I test" and "Type II test" are added (see Sub-clauses 3.1 and 3.3 hereof);
——the definition of “reference speed” is modified (see Sub-clause 3.2 hereof; Sub-clause 3.1 of Edition 2008);
——the calculation method of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles is modified (see Sub-clause 4.1.1 hereof; Sub-clause 8.1 of Edition 2008);
——the limits of fuel consumption for motorcycles and corresponding engine displacement range are modified (see Tables 1 and 3 hereof; Tables 3 and 4 of Edition 2008);
——the limits of fuel consumption for two-wheeled motorcycles with spark-ignition engine (equipped with automatic transmission) are added (see Table 2 hereof);
——the limits of fuel consumption for right three-wheeled motorcycles with compression-ignition engine are added (see Sub-clause 4.2.2 hereof);
——the calculation method of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles is modified (see Sub-clause 5.1.1 hereof; Sub-clause 4.1 of Edition 2008);
——the requirements for the test vehicle status and vehicle classification when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.1.2 hereof; Sub-clauses 5.1.2, 5.1.3, 5.1.4 and 5.1.5 of Edition 2008);
——the requirements for pre-heating traveling of two-wheeled motorcycles and side three-wheeled motorcycles are deleted (see Sub-clause 5.1. 6 of Edition 2008);
——the requirements for drivers when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.2 hereof; Sub-clause 5.1.7 of Edition 2008);
——the requirements for motorcycle fuel and lubricating oil are modified (see Sub-clause 5.2.3 hereof; Sub-clause 5.2 of Edition 2008);
——the requirements for environmental conditions are modified (see Sub-clause 5.2.4 hereof; Sub-clauses 4.2 and 4.3 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of fuel consumption measurement of two-wheeled motorcycles are modified (see Sub-clauses 5.3.1, 5.3.2, 5.3.3 and 5.3.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of Type I test for fuel consumption measurement of right three-wheeled motorcycles were modified (see Sub-clauses 5.4.1.1, 5.4.1.2, 5.4.1.3 and 5.4.1.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for pre-heating traveling of right three-wheeled motorcycles are modified (see Sub-clause 5.4.2.1.1 hereof; Sub-clause 5.1.6 of Edition 2008);
——the requirements for the measurement method of Type II test chassis dynamometer for right three-wheeled motorcycles are added (see Sub-clause 5.4.2.3 hereof);
——the requirements for the fuel consumption measurement of Type II test chassis dynamometer for right three-wheeled motorcycles are added (see Sub-clause 5.4.2.4.2.2 hereof);
——the requirements for product description are modified (see Annex A hereof; Annex A of Edition 2008);
——the measurement methods, measurement devices and calculation methods of fuel consumption are modified (see Annex B hereof; Annex B of Edition 2008);
——the requirements for type extension are added (see Annex C hereof).
In addition to a number of editorial changes, the following technical changes have been made with respect to GB 16486-2008:
——the application scope is modified: "not applicable to the vehicles only consuming gas fuel or alcohol fuel" is added, "except racing vehicles and off-road vehicles" is deleted (see Clause 1 hereof, Clause 1 of Edition 2008);
——the normative references are modified (see Clause 2 hereof, Clause 2 of Edition 2008);
——the terms and definitions of "Type I test" and "Type II test" are added (see Sub-clauses 3.1 and 3.3);
——the definition of “reference speed” is modified (see Sub-clause 3.2 hereof; Sub-clause 3.1 of Edition 2008);
——the limits of fuel consumption for mopeds are modified (see Tables 4 and 5 hereof; Tables 2 and 3 of Edition 2008);
——the requirements for the test vehicle status and vehicle classification when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.1.2 hereof; Sub-clauses 5.1.2, 5.1.3, 5.1.4 and 5.1.5 of Edition 2008);
——the requirements for drivers when the tests are carried out on chassis dynamometer are modified (see Sub-clause 5.2.2 hereof; Sub-clause 5.1.7 of Edition 2008);
——the requirements for the fuel and lubricating oil for mopeds are modified (see Sub-clause 5.2.3 hereof; Sub-clause 5.2 of Edition 2008);
——the requirements for environmental conditions are modified (see Sub-clause 5.2.4 hereof; Sub-clauses 4.2 and 4.3 of Edition 2008);
——the requirements for test cycle, test device, test process and test result of Type I test for the mopeds are modified (see Sub-clauses 5.5.1.1, 5.5.1.2, 5.5.1.3 and 5.5.1.4 hereof; Sub-clauses 6.1, 6.2, 6.3, 6.4 and 6.5 of Edition 2008);
——the requirements for pre-heating traveling of mopeds are modified (see Sub-clause 5.5.2.1.1 hereof; Sub-clause 5.1. 6 of Edition 2008);
——the requirements for the measurement method of Type II test chassis dynamometer for mopeds are added (see Sub-clause 5.5.2.3 hereof);
——the requirements for the fuel consumption measurement of Type II test chassis dynamometer for mopeds are added (see Sub-clause 5.5.2.4.2 hereof);
——the requirements for product description are modified (see Annex A hereof; Annex A of Edition 2008);
——the measurement methods, measurement devices and calculation methods of fuel consumption are modified (see Annex B hereof; Annex B of Edition 2008);
——the requirements for type extension are added (see Annex C hereof).
This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
This standard replaces GB 15744-2008 and GB 16486-2008.
The previous editions of GB 15744-2008 are as follows:
——GB 5377-1985;
——GB/T 15744-1995;
——GB/T 16486-1996.
The previous editions of GB 16486-2008 are as follows:
——GB 4567-1984;
——GB/T 15744-1995;
——GB/T 16486-1996.
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 and right three-wheeled motorcycles powered by compression-ignition engines.
This standard is not applicable to the vehicles only consuming gas fuel or alcohol fuel.
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 5378 Methods of road test for motorcycles and mopeds
GB 14622-2016 Limits and measurement methods for emissions from motorcycles (China IV)
GB 18176-2016 Limits and measurement methods for emissions of pollutants from mopeds (China IV)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 14622-2016 and GB 18176-2016 and the following apply.
3.1
Type I test
measurement of the average fuel consumption for motorcycles and mopeds under specified operating cycle conditions
3.2
reference speed
the traveling speed of right three-wheeled motorcycles and mopeds when carrying out fuel consumption test (Type II test)
3.3
Type II test
measurement of the average fuel consumption for right three-wheeled motorcycles and mopeds under specified reference speed conditions
4 Limits of fuel consumption
4.1 Calculation methods
4.1.1 Calculation method for fuel consumption of two-wheeled motorcycles and side three-wheeled motorcycles
Fuel consumption FC of two-wheeled motorcycles and side three-wheeled motorcycles is calculated according to Formula (1).
FC=FCI (1)
Where,
FCI——the fuel consumption measured through Type I test, L/100 km;
4.1.2 Calculation method for fuel consumption of right three-wheeled motorcycles and mopeds
Fuel consumption FC of right three-wheeled motorcycles and mopeds is calculated according to Formula (2).
FC=0.6×FCI+0.4×FCII (2)
Where,
FCI——the fuel consumption measured through Type I test, L/100 km;
FCII——the fuel consumption measured through Type II test, L/100 km.
4.2 Limits
4.2.1 For two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines, where manual (foot-operated) transmission is adopted, the limits are shown in Table 1; where automatic transmission is adopted, the limits are shown in Table 2.
Table 1 Limits of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines [with manual (foot-operated) transmission]
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300 ≥300~400 ≥400~500
Limits of fuel consumption/(L/100 km) 2.0 2.3 2.5 2.8 3.6 4.3 4.8
Actual engine displacement/mL ≥500~650 ≥650~800 ≥800~1,000 ≥1,000~1,250 ≥1,250~1,500 ≥1,500 —
Limits of fuel consumption/(L/100 km) 5.3 5.6 5.8 6.0 6.3 6.5 —
Table 2 Limits of fuel consumption for two-wheeled motorcycles and side three-wheeled motorcycles with spark-ignition engines [with automatic transmission]
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300 ≥300~400 ≥400~500
Limits of fuel consumption/(L/100 km) 2.1 2.5 2.7 3.0 3.9 4.6 5.1
Actual engine displacement/mL ≥500~650 ≥650~800 ≥800~1,000 ≥1,000~1,250 ≥1,250~1,500 ≥1,500 —
Limits of fuel consumption/(L/100 km) 5.6 5.9 6.1 6.3 6.6 6.8 —
4.2.2 For right three-wheeled motorcycles with spark-ignition engines, the limits are shown in Table 3. Limit of fuel consumption for right three-wheeled motorcycles with compression-ignition engines is equivalent to that of right three-wheeled motorcycles with spark-ignition engines divided by 1.2, and is rounded to one decimal place.
Table 3 Limits of fuel consumption for right three-wheeled motorcycles with spark-ignition engines
Actual engine displacement/mL >50~100 ≥100~125 ≥125~150 ≥150~200 ≥200~300
Limits of fuel consumption/(L/100 km) 3.0 3.5 3.8 4.3 5.0
Actual engine displacement/mL ≥300~400 ≥400~500 ≥500~650 ≥650~800 ≥800
Limits of fuel consumption/(L/100 km) 6.0 6.5 7.0 7.5 8.0
4.2.3 Limits of fuel consumption for mopeds are shown in Tables 4 and 5.
Table 4 Limits of fuel consumption for two-wheeled mopeds
Actual engine displacement/mL ≤50
Limits of fuel consumption/(L/100 km) 1.8
Table 5 Limits of fuel consumption for right three-wheeled mopeds
Actual engine displacement/mL ≤50
Limits of fuel consumption/(L/100 km) 2.1
5 Measurement methods of fuel consumption
5.1 Test types
5.1.1 Only Type I test shall be conducted for two-wheeled motorcycles and side three-wheeled motorcycles.
5.1.2 Both Type I test and Type II test shall be conducted for two-wheeled mopeds, right three-wheeled mopeds and right three-wheeled motorcycles.
5.1.3 Type I test is completed on chassis dynamometer, while Type II test is completed on road or chassis dynamometer.
5.2 General requirements
5.2.1 Test vehicle
5.2.1.1 The manufacturer or its authorized agent shall submit product description information in accordance with those specified in Annex A.
5.2.1.2 In case of test on chassis dynamometer, the status of test motorcycle shall meet relevant requirements of C.2.2 in GB 14622-2016 while that of test moped shall meet relevant requirements of C.2.2 in GB 18176-2016. The classification of two-wheeled motorcycles shall conform to the relevant requirements of C.2.3 in GB 14622-2016. The sidecar shall be dismantled and the side three-wheeled motorcycles shall be tested as the two-wheeled motorcycles.
5.2.1.3 In case of test on road, the load distribution of front axle and rear axle of the test vehicle shall meet the requirements of the manufacturer's technical document. As for the measurement device installed on the test vehicle, its effect on the original load distribution shall be minimized and its mass shall be included in the test record.
5.2.1.4 Where measurement device and speed sensor are installed on outer side of the test vehicle, the additional air resistance shall be minimized as possible.
Contents of GB 15744-2019
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Limits of fuel consumption
5 Measurement methods of fuel consumption
6 Model extension
7 Standard implementation
Annex A (Normative) Product description
Annex B (Normative) Measurement methods, devices and calculation methods of fuel consumption
Annex C (Normative) Requirements for type extension
