Ternary fuel compositions containing biodiesel, plant oil and lower alcohols for feeding diesel-cycle motors

Abstract

Fuel compositions based on biodiesel, lower alcohols and plant oil for feeding Diesel cycle engines, enabling more perfect burning, less emission of pollutants and less formation of internal deposits of impurities onto the inner surface of engines. Since the blends exhibit density similar to that of diesel oil, as well as chemical affinity for the latter (since it contains biodiesel, which performs the function of co-solvent), the present invention also relates to compositions of quaternary blends, that is, junction of the ternary blends proposed (biodiesel, lower alcohol and vegetable oil) with petroleum diesel in the most varied proportions. The preferred embodiment of this invention provides the replacement of fuel of non-renewable source (diesel oil) by others of renewable source, which are natural, non-toxic, biodegradable and that have excellent technical performance.

1 . A fuel for feeding Diesel cycle engines, characterized by having the following composition:
 (i) lower alcohol in the proportion range from 10% to 50% by mass;   (ii) vegetable oil in the proportion range from 10% to 60% by mass; and   (iii) ethyl or methyl ester (biodiesel) in the proportion range from 20% to 80% by mass.   
     
     
         2 . The fuel for feeding Diesel cycle engines according to  claim 1 , characterized by presenting anhydrous alcohol in the form of ethanol, preferably of the anhydrous type. 
     
     
         3 . The fuel for feeding Diesel cycle engines according to  claim 1 , characterized by presenting anhydrous alcohol in the form of methanol, preferably of the anhydrous type. 
     
     
         4 . A fuel for feeding Diesel cycle engines characterized by having the following composition:
 i. lower alcohol, preferably anhydrous, in the proportion range from 10% to 50% by mass;   ii. vegetable oil in the proportion range from 10% to 60% by mass; and   iii. petrodiesel, biodiesel or any mixture thereof in the proportion range from 20% to 80% by mass.   
     
     
         5 . A fuel for feeding Diesel cycle engines, characterized by having the fuel composition according to  claim 1 , mixed with petrodiesel in any proportion.