Technical Paper
Effect of Gasoline Composition on Exhaust Hydrocarbon
1994-10-01
941866
Numerous studies have been conducted on the effect of gasoline composition on automobile exhaust hydrocarbons, in order to improve the air quality and reduce the impact on the environment. However, the quantitative relationship between gasoline composition and exhaust hydrocarbon has not been clarified. The purpose of this study is to evaluate the characteristics of individual hydrocarbons in gasoline and to clarify the effect of the gasoline composition on engine-out exhaust hydrocarbons. Experiments were performed on a single cylinder research engine operating under steady state condition. The test fuels were blended gasolines of alkylate, catalytic reformate and fluid catalytic cracking gasoline. Chemically defined binary fuel mixtures of isooctane, benzene, toluene, xylene and ethylbenzene were used as variables to study their impact on exhaust hydrocarbons. The individual exhaust hydrocarbon species were analyzed using a gas chromatograph with flame ionization detector (FID).