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《Tianjin Science & Technology》 2016-01
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A Comparative Test of Unregulated Emissions from a Light-duty Vehicle Under European,American and Japanese Emission Regulations

ZHANG Fan;YU Jintao;TIAN Donglian;China Automotive Technology & Research Center;  
Using a light-duty vehicle fuelled with the same gasoline sample,tests referring to European,US and Japanese emission regulations were carried out on a chassis dynamometer.FTIR,HPLC and GC-MS methods were used to measure unregulated emissions of methanol, formaldehyde, acetaldehyde, acetone, benzene, toluene, xylene, ethylene,propylene,1,3-butadiene and isobutylene in the vehicle exhaust.The test results indicate that unregulated emissions during the entire driving cycles depend primarily on the emission level of the first 100,s during cold start before the catalyst is completely lighted-off.Although there are differences in the average emission levels during different driving cycles,the largest variation is no more than 2,times.In addition to NOx emissions,the average levels of CO,HC,CO_2,CH_4,alcohols,aldehydes,ketones,aromatic hydrocarbons and olefins have the same tendency:Japanese JC08European NEDCAmerican FTP75.
【CateGory Index】: X734.2
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