Fuel based on vegetable oil

Abstract

The invention is based on a fuel obtained from vegetable oil for the operation of diesel internal combustion engines. According to the invention, the phosphorus content is less than 0.5 mg per kg of fuel.

1 . A fuel obtained from vegetable oil for operating diesel combustion engines the improvement wherein the phosphorus content is less than 0.5 mg per kg of fuel. 
   
   
       2 . A fuel as set forth in  claim 1 , wherein the calcium content is less than 0.5 mg per kg of fuel. 
   
   
       3 . A fuel as set forth in  claim 1 , wherein the magnesium content is less than 0.5 mg per kg of fuel. 
   
   
       4 . A fuel as set forth in  claim 1 , wherein the phosphorus content is less than 0.3 mg per kg of fuel. 
   
   
       5 . A fuel as set forth in  claim 3 , wherein the combined calcium and magnesium content is less than 0.75 mg per kg of fuel. 
   
   
       6 . A fuel as set forth in  claim 1 , wherein the potassium content is less than 1 mg per kg of fuel. 
   
   
       7 . A fuel obtained from vegetable oil for operating diesel combustion engines, the improvement wherein the sum of the phosphorus content and the calcium content is less than 1.5 mg per kg of fuel. 
   
   
       8 . A fuel as set forth in  claim 7 , wherein the sum is equal to or less than 1.0 mg per kg of fuel.