Search Results

In order to evaluate the deposit forming tendency produced by gasoline cracked components in vehicle intake systems, four cracked components of Venezuelan gasolines were separated into fractions by distillation ranges: IBP-55 °C, 55-110 °C, 110-150 °C, 150-190 °C and 190+ °C. A fifth low-boiling range cracked component was separated into fractions with the following distillation ranges: IBP-55 °C, 55-110 °C and 110+ °C. Sulfur, total and basic nitrogen and gum content, as well as the saturates, olefinic and aromatic contents were determined for each fraction. The fractions were also tested in an Induction System Deposit (ISD) apparatus for their deposit-forming tendency. Aromatic, sulfur, total and basic nitrogen and gum content increased with fraction distillation range for each component. Each of the total components evaluated showed a small tendency to form deposit by the ISD apparatus test method (<1.3 mg/100 ml).