| 摘要 |
<p>Use of an effective concentration of polyalkenylsuccinimides comprising the reaction product of hydrocarbyl dicarboxylic acid producing reaction intermediates and nucleophilic reactants, as additives in unleaded gasoline compositions suitable in spark ignition engines, for reducing injector nozzle fouling in direct injection spark ignition engines. Furthermore, a fuel additive composition essentially comprising nitrogen-containing dispersants selected from polyisobutenyl monoamines and polyisobutenyl polyamines, carrier oils which are substantially free of nitrogen and selected from synthetic carrier oils and mineral carrier oils, and the above polyalkenylsuccinimides.</p> |
