THE EFFECT OF GASOLINE ADDITIVES ON BTEX EMISSIONS FROM LIGHT-DUTY VEHICLE

摘要

Gasoline additives are broadly applied for improving vehicle performance or solving specific problems. Based on their type of claims, six gasoline additive products were randomly selected to run FTP-75 test, and gaseous emissions in the exhaust of the test vehicle were collected to determine the concentrations of CO, HC, NO{sub}x, and BTEX. The results showed that all tested gasoline additives were able to reduce the emissions of regulated pollutants averaging a 7.1% deduction for CO, 25.6% for HC, and 11.9% for NO{sub}x. The use of GA1 additive, an octane booster, could enhance 19.3% of benzene emission, 30.8% for toluene, 17.1% for ethylbenzene, and slightly reduce 1.8% of xylene emission in the engine exhaust. In this study, it is suggested that the use of gasoline additives should be carefully controlled to avoid imposing more BTEX emissions to the environment.