1 Scope
This standard specifies the evaluation index, test method, test data processing and evaluation item calculation of fuel saving technology for in-service vehicles. This standard is applicable to the evaluation of the use effect of various fuel saving technologies for vehicles in use.
2 Normative References
The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrections) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest version is applicable to this standard.
GB/T 265 Determination method of kinematic viscosity of petroleum products and kinetic viscometer algorithm
GB/T 3142 Determination method of bearing capacity of lubricants (four-ball method)
GB/T 3535 Determination of the pour point of petroleum (GB/T3535-1983, neq ISO 3016;1974)
GB/T 3536 Method for the determination of flash point and ignition point of petroleum products (Cleveland open cup method) (GB/T 3536-1983, eqv ISO 2592:1973)
GB 3847 Limits and methods of measurement for the smoke level of vehicle exhaust from compression-ignition engines and compression-ignition engines for vehicles
GB/T 5096 Test method for corrosion of copper flakes for petroleum products(GB/T 5096-1983,eqv ASTM D 130,1983)
GB/T 12534 General rules for road test methods for automobiles
GB/T 12543 Test method for accelerating performance of automobiles
GB/T 12545.2 Test method for fuel consumption of commercial vehicles
GB 18285 Emission Limits and Measurement Methods for Exhaust Pollutants from Vehicles with Ignition Engines (Double Idling Method and Simple Working Condition Method)
GB/T 18297 Test methods for the performance of automotive engines (GB/T 18297-2001, neq ISO 1585,1992, ISO 2534,1998)
GB 18352 (all parts) Emission limits and measurement methods for light duty vehicles
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
fuel saving technologies for automobile
a technology that reduces the fuel consumption of a vehicle without adversely affecting its other usage properties.
4 Assessment items
4.1 Economic items
4.1.1 Main items:
a) Fuel saving under intercity operation mode (△ Q), in kilogram per hundred kilometers (kg/100 km); Fuel saving rate of intercity operation mode（ α).%。
b) Fuel saving under urban operation mode (△ Q.), in kilogram per hundred kilometers (kg/100 km); Fuel saving rate of urban operation mode (a).%.
c) Fuel saving in fast operation mode (△ Q,), in kilogram per hundred kilometers (kg/100 km);
4.1.2 Reference items:
a) Multi working condition fuel saving (0Qs), unit: kg/100km; Fuel saving rate under multiple working conditions (ag),%
b) Fuel saving per hundred kilometers (OQ%), in kilogram per hundred kilometers (kg/100 km); Fuel saving rate (a.) per hundred kilometers.
4.2 Power item
a) Torque contrast coefficient Km;
b) Power contrast coefficient Kp;
c) Acceleration time contrast coefficient K;
d) Taxi distance high contrast coefficient K..
4.3 Environmental impact item
a) Rco - purification rate of vehicle exhaust pollutant CO;
b) Ruc - purification rate of vehicle exhaust pollutant HC;
c) Rso.-- Vehicle exhaust pollutant NOx purification rate;
d) RrHc+No.- Purification rate of vehicle exhaust pollutants HC+NOx;
e) Rpm -- purification rate of diesel vehicle exhaust particulate matter;
f) Rxj - smoke purification rate of diesel vehicle exhaust pollution.
5 Performance test
5.1 Test classification and test items
5.1.1 Engine performance bench comparison test:
a) Engine total power comparison test;
b) Engine load characteristic comparison test;
c) Comparison test of engine exhaust pollutants.
5.1.2 Vehicle performance road comparison test:
a) Vehicle constant speed fuel consumption comparison test;
b) Vehicle fuel consumption comparison test under multiple working conditions;
c) Fuel consumption comparison test for 100 km of vehicle operation
d) Full throttle acceleration performance comparison test for the highest gear (or second gear) of the vehicle;
e) Comparison test of vehicle shifting and sliding;
f) Contrast measurement of vehicle exhaust pollutants:
g) Contrast measurement of smoke intensity of diesel vehicle exhaust pollutants.
5.1.3 Physical and chemical performance test of fuel saving additives:
a) Physical and chemical performance test of fuel saving additives;
b) Physical and chemical properties test of lubricating oil saving additives.
5.2 Test method
5.2.1 Engine performance bench comparison test
5.2.1.1 Engine total power comparison test Engine total power comparison test shall be conducted according to relevant test items in GB/T 18297.
5.2.1.2 Engine load characteristic comparison test The engine load characteristic comparison test shall be conducted in accordance with the provisions of the load characteristic test in GB/T 18207. The control parameters are shown in Table 1. The engine speed is the engine speed corresponding to the top or top five vehicle speeds. It is measured when the vehicle is running or calculated according to Formula (1).
6 Calculation of test data processing and evaluation items
6.1 Engine load characteristic data processing
6.1.1 Calculation of integral mean value according to load characteristic fuel consumption curve
6.2 Vehicle road test data processing shall be conducted according to GB/T 12545. 2.
6.3 Economic evaluation items
6.3.1 Calculation of fuel saving amount and fuel saving rate under various operation modes 6.3.1.1 Fuel saving amount under various operation modes
Appendix A
(normative appendix)
Comparative test method for fuel consumption of Baigongguo in vehicle operation
A.1 Test conditions
A.1.1 Test vehicles The test vehicles shall be in good technical condition and their performance shall comply with the provisions of the manufacturer.
A.1.2 Unless otherwise specified, the load of the test vehicle shall comply with the provisions in GB/T 12545.2.
A.1.3 Test instruments Test instruments shall comply with the requirements in GB/T 12545.2.
A. 1.4 The vehicle road comparison test conditions of the test section shall meet the requirements of 5.2.2.1. The length of the test section shall not be less than 15 km, which can be either a closed circular road (the measuring distance shall be a complete circular road) or a straight road (the test shall be conducted in two directions).
A. 1.5 Test fuel.
The test fuel shall conform to the regulations of the vehicle manufacturer.
A. 2 Test method
Under normal traffic conditions, the following trains run at a constant speed as far as possible:
passenger cars: 90 km/h
Commercial vehicle: 70 km/h
Measure the fuel consumption per 10km one-way (or a complete circular journey), and convert it into the fuel consumption per 100km. Round trip each test once (or two complete circular journeys), and take the arithmetic mean of the two measurement results as the measured value of the average fuel consumption under the condition of 100 kilometers of operation. During the test, the number of braking times, the number of use of each gear, time, travel and speed shall be recorded.
