Fuel for internal combustion engine

Abstract

A fuel for an internal combustion engine is provided which is environment friendly and arranged to minimize corrosion of the internal combustion engine. The fuel is characterized by 50 to 75 percent by weight of an alcohol component including isopropyl alcohol, isobutyl alcohol, and n-butyl alcohol and 25 to 49.9 percent by weight of a hydrocarbon component, wherein the ignition point is not higher than −20° C. Preferably, the alcohol component is 50 to 60 percent by weight while the hydrocarbon component is 40 to 49.9 percent by weight. Also, the alcohol component contains 15 to 30 percent by weight of isopropyl alcohol, 15 to 25 percent by weight of isobutyl alcohol, and 7 to 20 percent by weight of n-butyl alcohol.

1 . A fuel for an internal combustion engine characterized by 50 to 75 percent by weight of an alcohol component including isopropyl alcohol, isobutyl alcohol, and n-butyl alcohol and 25 to 49.9 percent by weight of a hydrocarbon component, wherein the ignition point is not higher than −20° C.  
   
   
       2 . A fuel for an internal combustion engine according to  claim 1 , wherein the alcohol component is 50 to 60 percent by weight and the hydrocarbon component is 40 to 49.9 percent by weight.  
   
   
       3 . A fuel for an internal combustion engine according to  claim 1  or 2, wherein the alcohol component contains 15 to 30 percent by weight of isopropyl alcohol, 15 to 25 percent by weight of isobutyl alcohol, and 7 to 20 percent by weight of n-butyl alcohol.  
   
   
       4 . A fuel for an internal combustion engine according to  claim 3 , wherein the weight ratio between isopropyl alcohol, isobutyl alcohol, and n-butyl alcohol is expressed by (1.8-2.2):(1.3-1.7):1.  
   
   
       5 . A fuel for an internal combustion engine according to  claim 1  or  2 , further containing not higher than 6.0 percent by weight of MTBE.  
   
   
       6 . A fuel for an internal combustion engine according to  claim 1  or  2 , wherein the hydrocarbon component contains 0.2 to 1.0 percent by weight of aromatic substances and 48.9 to 49.7 percent by weight of non-aromatic substances.