Mixed fuel suitable for diesel engines

Abstract

The present invention a mixed fuel suitable for diesel engines, which consists of the following components by volume percentage: 35% to 37.5% of diesel, 35% to 37.5% of ethanol and 25% to 30% of PODE, wherein the diesel is petroleum diesel having a cetane number not less than 48; the purity of the ethanol by mass percentage is not less than 99.5%; and, the PODE is a mixture of two fuels shown by molecular formulae CH 3 O(CH 2 O) 3 CH 3 and CH 3 O(CH 2 O) 4 CH 3 . The use of this fuel is advantageous for emission reduction.

1 . A mixed fuel suitable for diesel engines, consisting of the following components by volume percentage:
 35% to 37.5% of diesel, 35% to 37.5% of ethanol and 25% to 30% of PODE;   the diesel is petroleum diesel having a cetane number not less than 48;   the purity of the ethanol by mass percentage is not less than 99.5%; and   the PODE is a mixture of two fuels shown by molecular formulae CH 3 O(CH 2 O) 3 CH 3  and CH 3 O(CH 2 O) 4 CH 3 .   
     
     
         2 . The mixed fuel suitable for diesel engines according to  claim 1 ,
 wherein the volume percentage of the fuel shown by the molecular formula CH 3 O(CH 2 O) 3 CH 3  in the PODE is 50% to 80%.   
     
     
         3 . The mixed fuel suitable for diesel engines according to  claim 1  or  2 , wherein the mixed fuel consists of the following components by volume percentage: 36% of diesel, 36% of ethanol and 28% of PODE. 
     
     
         4 . The mixed fuel suitable for diesel engines according to  claim 3 , wherein the content of sulfur in the diesel is less than 10 ppm.