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(11) | EP 0 247 706 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Fuel composition and additive concentrates, and their use in inhibiting engine coking |
(57) Coking in and around the injector nozzles of indirect injection compression ignition
engines is reduced by means of distillate fuel into which has been blended suitable
concentrations of:
(a) organic nitrate ignition accelerator, (b) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens, and (c) N,Nʹ-disalicylidene-1,2-diaminopropane. Additive concentrates can be formulated using such additive combinations. |