Fifteen heavy-duty diesel vehicles were tested on chassis dynamometer by using typical heavy
duty driving cycle and fuel economy cycle. The air from the exhaust was sampled by 2,4-
dinitrophenyhydrazine cartridge and 23 carbonyl compounds were analyzed by high performance
liquid chromatography. The average emission factor of carbonyls was 97.2 mg/km, higher than that
of light-duty diesel vehicles and gasoline-powered vehicles. Formaldehyde, acetaldehyde, acetone
and propionaldehyde were the species with the highest emission factors. Main influencing factors for
carbonyl emissions were vehicle type, average speed and regulated emission standard, and the impact
of vehicle loading was not evident in this study. National emission of carbonyls from diesel vehicles
exhaust was calculated for China, 2011, based on both vehicle miles traveled and fuel consumption
Fifteen heavy-duty diesel vehicles were tested on chassis dynamometer by using typical heavy
duty driving cycle and fuel economy cycle. The air from the exhaust was sampled by 2,4-
dinitrophenyhydrazine cartridge and 23 carbonyl compounds were analyzed by high performance
liquid chromatography. The average emission factor of carbonyls was 97.2 mg/km, higher than that
of light-duty diesel vehicles and gasoline-powered vehicles. Formaldehyde, acetaldehyde, acetone
and propionaldehyde were the species with the highest emission factors. Main influencing factors for
carbonyl emissions were vehicle type, average speed and regulated emission standard, and the impact
of vehicle loading was not evident in this study. National emission of carbonyls from diesel vehicles
exhaust was calculated for China, 2011, based on both vehicle miles traveled and fuel consumption
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