GB/T 37340-2019 English PDF (GBT37340-2019)

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GB/T 37340-2019: Conversion methods for energy consumption of electric vehicles
GB/T 37340-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 47
Conversion methods for energy
consumption of electric vehicles
ISSUED ON: MARCH 25, 2019
IMPLEMENTED ON: OCTOBER 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
4 Calculation and determination of electric energy consumption of vehicle types
... 5 
5 Heat value conversion method ... 6 
6 CO2 emission conversion method ... 7 
Appendix A (Informative) Numerical reference value and example of formula
calculation parameters ... 9 
Bibliography ... 11 
Conversion methods for energy
consumption of electric vehicles
1 Scope
This Standard provides the methods for converting electric vehicles’ electric
energy consumption equivalent into fuel consumption.
This Standard applies to pure electric vehicles and plug-in hybrid electric
vehicles.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 18386 Electric vehicles - Energy consumption and range - Test
procedures
GB/T 19233 Measurement methods of fuel consumption for light-duty
vehicles
GB/T 19596 Terminology of electric vehicles
GB/T 19753 Test Methods for Energy Consumption of Light-duty Hybrid
Electric Vehicles
GB/T 19754 Test methods for energy consumption of heavy-duty hybrid
electric vehicles
3 Terms and definitions
The terms and definitions as defined in GB/T 19596 and the following apply to
this document.
3.1 Fuel energy factor
The fuel volume which generates the same heat value (1 kW • h=3600 kJ) as
the unit electric quantity, calculated by GB/T 2589, GB 17930, GB 19147, in
consumption shall be converted into equivalent gasoline/diesel consumption.
For a pure electric vehicle, its electric energy consumption shall be converted
into equivalent gasoline/diesel consumption. See Appendix A for the
parameters used in the above calculations.
5 Heat value conversion method
5.1 Simple conversion method
According to formula (1), the equivalent fuel consumption (FC) of electric
energy is calculated:
Where:
FC - Equivalent fuel consumption, in liters per 100 kilometers (L/100 km). The
calculation result is rounded off to two decimal places;
E - The electric energy consumption of vehicle, in kilowatt-hours per 100
kilometers (kW • h/100 km). It is measured according to GB/T 18386, GB/T
19233, GB/T 19753, GB/T 19754. Its value is rounded off to two decimal
places;
FE - The energy factor of fuel, in liters per kilowatt-hour [L/(kW • h)]. The value
is rounded off to four decimal places.
5.2 Fuel life cycle conversion method
5.2.1 Calculation of equivalent fuel consumption (FCe)
According to formula (2), the equivalent fuel consumption (FCe) is calculated:
Where:
FCe - Equivalent fuel consumption, in liters per 100 kilometers (L/100 km). The
calculation result is rounded off to two decimal places;
E - The electric energy consumption of vehicle, in kilowatt-hours per 100
kilometers (kW • h/100 km). It is measured according to GB/T 18386, GB/T
19233, GB/T 19753, GB/T 19754. Its value is rounded off to two decimal
places;
FE - The energy factor of fuel, in liters per kilowatt-hour [L/(kW • h)]. The value
The calculation result is rounded off to two decimal places;
E - The electric energy consumption of vehicle, in kilowatt-hours per 100
kilometers (kW • h/100 km). It is measured according to GB/T 18386, GB/T
19233, GB/T 19753, GB/T 19754. Its value is rounded off to two decimal
places;
FCO2 - CO2 conversion factor, in liters per kilowatt-hour [L/(kW • h)]. According
to formula (5), it is calculated. The value is rounded off to two decimal
places.
6.2 Calculation of CO2 conversion factor (FCO2)
According to formula (5), the CO2 conversion factor (FCO2) is calculated:
Where:
FCO2 - CO2 conversion factor, in liters per kilowatt-hour [L/(kW • h)]. The value
is rounded off to two decimal places;
TE - Standard coal consumption of thermal power supply, in kilograms per
kilowatt-hour [kg/(kW • h)]. The value is rounded off to three decimal
places;
TC - CO2 emission factor of fuel coal. The value is rounded off to two decimal
places;
φ - Thermal power ratio, %. The value is rounded off to one decimal place;
TF - CO2 emission factor of fuel. The value is rounded off to two decimal places;
tM - Reduced factor of fuel coal and standard coal. The value is rounded off to
two decimal places;
ich - Charge efficiency, %. The value is rounded off to an integer bit;
itr - Line loss rate, %. The value is rounded off to two decimal places.