Fuel composition and its use
View Patent ↗A fuel composition is provided that contains a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of a certain aniline additive compound. Use of such aniline additive compound in a combustion engine is also provided.
1. A lead free fuel composition comprising: (a) a major amount of a mixture of hydrocarbons in the gasoline boiling range and (b) a minor amount of an additive compound having the formula:
2. The fuel composition of claim 1 wherein said additive compound is present in an amount from about 0.01% by weight to 3% by weight base on the total weight of the fuel composition.
3. The fuel composition of claim 1 wherein R 4 is an ethyl group.
4. The fuel composition of claim 1 wherein R 4 is a methyl group.
5. The fuel composition of claim 2 wherein said additive compound is present in an amount from about 0.1 wt % to about 2 wt % based on the total weight of the fuel composition.
6. A method of improving the octane number of a lead-free gasoline which comprises adding to a major portion of a gasoline mixture minor amounts of an aniline compound having the formula:
7. The method of claim 6 wherein said aniline compound is present in an amount from about 0.01% by weight to 3% by weight base on the total weight of the gasoline.
8. The method of claim 6 wherein R 4 is an ethyl group.
9. The method of claim 6 wherein R 4 is a methyl group.
10. A method for reducing intake valve deposits in an internal combustion engine which comprises burning in said engine a lead-free fuel composition comprising: (a) a major amount of a mixture of hydrocarbons in the gasoline boiling range and (b) a minor amount of an additive compound having the formula:
11. The method of claim 10 wherein said additive compound is present in an amount from about 0.01% by weight to 3% by weight base on the total weight of the fuel composition.
12. The method of claim 10 wherein R 4 is an ethyl group.
13. The method of claim 10 wherein R 4 is a methyl group.
14. The method of claim 10 wherein said additive compound is present in an amount from about 0.1 wt % to about 2 wt % based on the total weight of the fuel composition.
15. The fuel composition of claim 1 wherein
16. The method of claim 15 wherein R 4 is a methyl group.
17. The method of claim 6 wherein
18. The method of claim 17 wherein R 4 is a methyl group.
19. The method of claim 10 wherein
20. The method of claim 19 wherein R 4 is a methyl group.