| 摘要 |
PROBLEM TO BE SOLVED: To minimize, reduce and control deposit formation thereby providing optimal engine operation, i.e., increased fuel economy, better vehicle drivability, reduced emissions and less engine maintenance.SOLUTION: There is provided a quaternary ammonium salt detergent made of a reaction product of a reaction of: (a) a hydrocarbyl substituted acylating agent and a compound having an oxygen or nitrogen atom capable of condensing with the acylating agent and further having a tertiary amino group; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen. Also provided is a use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits. The compositions and methods of the present invention minimize, reduce and control deposit formation in an engine, thereby reducing fuel consumption, enhancing drivability, reducing vehicle maintenance, and reducing emissions, so as to enable optimal engine operation.SELECTED DRAWING: None |
