文档介绍：GB/T 19233-2003
National Standard of the People's Republic of China
Measurement methods of fuel consumption for light-duty vehicles
1 Scope
This national standard specifies the testing and calculating methods of fuel consumption by the
carbon balance method using the measured emissions of carbon dioxide (CO2), carbon monoxide
(CO) and hydrocarbon (HC) during the test cycle simulating the urban and extra-urban driving
patterns.
This national standard applies to vehicles of category M1 powered by positive-ignition engine or
compression-ignition engine with a maximum design speed of 50km/h or more and vehicles of
category M2 and N1 with a maximum design total mass not exceeding tons.
2 Normative references
The following documents contain provisions which, through reference in the text, constitute
provisions of this national standard. For dated references, subsequent amendments to, or revisions
of, any of these publications do not apply. However, parties to agreements based on this national
standard are encouraged to investigate the possibility of applying the most recent editions of the
documents indicated below. For undated references, the latest edition of the document referred to
applies.
GB/T 1884 Determination of density for Petroleum and the liquid petroleum products
(hydrometer method)
GB -2001 Limits and measurement methods for emissions from light-duty vehicle(Ⅱ)
3 Terms and definitions
For the purpose of this national standard, the terms and definitions given in GB -2001
apply.
4 General requirements
The emissions of CO2,CO and HC shall be measured during the test cycle simulating the urban
and extra-urban driving patterns as described in appendix CA of annex C to GB -2001.
The results of the test shall be expressed as CO2,CO and HC emissions in grams per kilometre
(g/km) rounded to the nearest whole number.
Fuel consumptions are calculated according to