(19)
(11) EP 0 247 706 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.01.1988 Bulletin 1988/02

(43) Date of publication A2:
02.12.1987 Bulletin 1987/49

(21) Application number: 87201460

(22) Date of filing: 28.12.1984
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 30.12.1983 US 567089
30.12.1983 US 567071
30.12.1983 US 567090

(71) Applicant: ETHYL CORPORATION
 ()

(72) Inventor:
  • Hanlon, John Vincent
     ()

   


(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.







Search report