Diesel fuel combustion enhancing additive
Embodiments disclosed herein generally relate to the use of low concentration additives comprising a terpene and a cetane improver in diesel fuel to rapidly promote fuel atomization and air mixing in the combustion chamber and thereby increase the fuel efficiency and reduce harmful NO x and particulate exhaust emissions.
1. A fuel additive consisting of a monoterpene and a cetane enhancer having a percentage composition of monoterpene by weight of between about 75% to 91% with the remainder cetane enhancer.
2. A fuel additive of claim 1 wherein the percentage composition of monoterpene by weight is between about 80% to 91% with the remainder cetane enhancer.
3. A fuel additive of claim 1 wherein the percentage composition of monoterpene by weight is between about 85% to 91% with the remainder cetane enhancer.
4. A fuel additive of claim 1 wherein the percentage composition of monoterpene by weight is about 91% with the remainder cetane enhancer.
5. The fuel additive of claim 1 wherein the monoterpene is d-limonene.
6. The fuel additive of claim 5 wherein the d-limonene is between about 93% to 100% pure.
7. The fuel additive of claim 5 wherein the d-limonene is between about 96% to 100% pure.
8. The fuel additive of claim 1 wherein the cetane enhancer is selected from a group consisting of 2-ethylhexyl nitrate, di-tert-butyl peroxide and ammonium nitrate.
9. The fuel additive of claim 1 wherein the cetane enhancer is 2-ethylhexyl nitrate.
10. A fuel composition consisting of an admixture of d-limonene and a 2-ethylhexyl nitrate providing from about 75% to 91% by weight of d-limonene and about 25% to 9% 2-ethylhexyl nitrate mixed with a diesel fuel providing about 0.0007% to about 0.01% by weight of the admixture to fuel ratio.
11. The fuel composition of claim 10 wherein the admixture provides about 0.001% to about 0.005% by weight of admixture to fuel ratio.
12. A fuel composition consisting of an admixture of a d-limonene and a 2-ethylhexyl nitrate providing about 75% to 91% by weight of d-limonene and about 25% to 9% 2-ethylhexyl nitrate mixed with a diesel fuel providing about 500 ppm to about 10,000 ppm of admixture to fuel ratio.
13. A fuel composition of claim 12 wherein the admixture mixed with a diesel fuel provides about 800 ppm to about 2,500 ppm of admixture to fuel ratio.
14. A method of preparing a fuel additive for use in a diesel fuel comprising the steps of:
combining a monoterpene of between 75% to 91% by weight with a cetane enhancer selected from a group consisting of 2-ethylhexylnitrate, di-tert-butyl peroxide and ammonium nitrate to form a fuel additive; and,
combining the fuel additive to a volume of diesel fuel resulting in an combined fuel blend providing an additive mixture of an amount between about 500 ppm and 10,000 ppm.
15. A method of preparing a fuel additive for use in a diesel fuel comprising the steps of:
combining a quantity of d-limonene of between 75% to 91% by weight with a cetane enhancer selected from a group consisting of 2-ethylhexylnitrate, di-tert-butyl peroxide and ammonium nitrate to form a fuel additive; and,
adding the fuel additive to a volume of diesel fuel resulting in a combined fuel blend providing an additive mixture of an amount between about 800 ppm and 2,500 ppm in the diesel fuel.