Liquid fuel compositions
View Patent ↗A liquid fuel composition suitable for use in an internal combustion engine is provided containing (a) from 50 to 90 % v/v of a C 1 -C 4 alcohol; (b) from 10 to 50 % v/v of a Fischer-Tropsch derived naphtha; and optionally (c) up to 10 % v/v of a C 3 -C 6 hydrocarbon component. A process for preparing a liquid fuel composition and a method of operating an internal combustion engine is also disclosed.
1. A liquid fuel composition suitable for use in an internal combustion engine consisting of:
(a) from 50 to 90% v/v of a C 1 -C 4 alcohol;
(b) from 10 to 50% v/v of a Fischer-Tropsch derived naphtha having at least 90% v/v of paraffinic content and aromatics content of below 1% v/v;
(c) from 0.1 to 10% v/v of a C 3 -C 6 hydrocarbon component; and
(d) one or more fuel additives.
2. The liquid fuel composition of claim 1 wherein the amount of C 1 -C 4 alcohol is in the range of from 60 to 90% v/v.
3. The liquid fuel composition of claim 2 wherein the amount of C 1 -C 4 alcohol is in the range of from 65 to 89% v/v.
4. The liquid fuel composition of claim 3 wherein the amount of C 1 -C 4 alcohol is in the range of from 70 to 88% v/v.
5. The liquid fuel composition of claim 1 wherein the C 1 -C 4 alcohol is ethanol.
6. The liquid fuel composition of claim 2 wherein the C 1 -C 4 alcohol is ethanol.
7. The liquid fuel composition of claim 3 wherein the C 1 -C 4 alcohol is ethanol.
8. The liquid fuel composition of claim 1 wherein the liquid composition additionally includes one or more fuel additive.
9. A method of operating an internal combustion engine comprising
(a) introducing into a combustion chamber of said engine a liquid fuel composition of claim 1 and
(b) operating said engine.
10. A method of operating an internal combustion engine comprising
(a) introducing into a combustion chamber of said engine a liquid fuel composition of claim 2 and
(b) operating said engine.
11. A method of operating an internal combustion engine comprising
(a) introducing into a combustion chamber of said engine a liquid fuel composition of claim 3 and
(b) operating said engine.
12. The liquid fuel composition of claim 1 , wherein the Fischer-Tropsch derived naphtha has essentially no sulphur or nitrogen present.