Fuel oil composition

Abstract

A diesel fuel composition comprising diesel fuel, triglycerides of vegetable origin and an oxygenate material exhibits good engine emissions, improved lubricity and no deterioration in engine performance.

1 . A diesel fuel composition comprising:
 50-99.9% by weight diesel fuel;   0.1 to 50% by weight of triglycerides of a vegetable oil; and   0.1 to 30% by weight with respect to the weight concentration of triglycerides of a vegetable oil of an oxygenate; wherein said oxygenate is present in the diesel fuel composition in an amount effective for said composition to exist as a stable solution and the combined amounts of oxygenate, and triglycerides of said vegetable oil are sufficient to impart to said composition a kinematic viscosity in the range of 1.5-4.1 centistokes of 40° C.   
     
     
         2 . The diesel fuel in accordance with  claim 1 , further comprising 0-7% by weight with respect to the total weight concentration of said triglycerides of a vegetable oil of a terpenoid. 
     
     
         3 . The diesel fuel in accordance with  claim 1 , wherein said triglycerides of a vegetable oil are selected from a group comprising rapeseed oil, soybean oil, peanut oil, palm oil, palm kernel oil, coconut oil, tall oil, canola oil, linseed oil, corn oil, sesame oil, cottonseed oil, jatropha oil, crab oil, sunflower seed oil, safflower oil, high oleic safflower, and triolein. 
     
     
         4 . The diesel fuel in accordance with  claim 1 , wherein said triglycerides of a vegetable oil is soybean oil. 
     
     
         5 . The diesel fuel in accordance with  claim 1 , wherein said oxygenate has a flashpoint of more than 38° C. 
     
     
         6 . The diesel fuel in accordance with  claim 5 , wherein the oxygenate is selected from a group comprising n-butanol, n-hexanol, n-heptanol, n-octanol, n-nonanol or n-decanol, a ketone, such as, 2-ocatanone and long chain fatty acid ester, such as, methyl cis-9-octadecenoate. 
     
     
         7 . The diesel fuel in accordance with  claim 5 , wherein said oxygenate is n-butanol. 
     
     
         8 . The diesel fuel in accordance with  claim 5 , wherein said oxygenate is n-octanol. 
     
     
         9 . The diesel fuel in accordance with  claim 2 , wherein said terpenoid is limonene. 
     
     
         10 . A process of improving the lubricity of diesel fuel having 500 ppm or less sulfur comprising:
 adding 0.1 to 50% by weight triglycerides of a vegetable origin to the diesel fuel;   adding 0.1 to 30% by weight with respect to the weight concentration of triglycerides of an oxygenate to the diesel fuel; and   adding 0.01 to 0.7% by weight with respect to the weight concentration of the triglycerides of a terpene to the diesel fuel.   
     
     
         11 . The process in accordance with  claim 10  wherein the sulfur content of the diesel fuel is less than 50 ppm by weight. 
     
     
         12 . A fuel lubricity additive compound, comprising a triglyceride of a vegetable origin and an oxygenate material.