Fuels compositions and methods for using same

摘要

A fuel composition and methods for using it for controlling deposit formation in a spark-ignition internal combustion engine, such as a direct injection engine, comprising a spark-ignition fuel, a detergent, and a deposit inhibitor compound. The detergent is selected from a Mannich base detergent and a polyetheramine detergent. The deposit inhibitor compound comprises a succinimide compound or a Manganese compound.