| (19) |
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(11) |
EP 0 147 240 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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02.04.1986 Bulletin 1986/14 |
| (43) |
Date of publication A2: |
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03.07.1985 Bulletin 1985/27 |
| (22) |
Date of filing: 28.12.1984 |
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| (84) |
Designated Contracting States: |
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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 |
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() |
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| |
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| (54) |
Fuel compositions 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, and
(b) hydrocarbyl-substituted succinimide or succinamide, or
(a) organic nitrate ignition accelerator,
(c) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens, and
(d) N,N'-disalicylidene-1,2-diaminopropane, or
(b) hydrocarbyl-substituted succinimide or succinamide,
(c) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens, and
(d) N,N'-disalicylidene-1,2-diaminopropane.
Additive concetrates can be formulated using such additive combinations.