Fuel mixture for compression ignition device

Abstract

A fuel mixture for a compression ignition device is provided, comprising a mixture of used oil and fuel material in a ratio that increases the fuel efficiency of the device in comparison to the efficiency of the device when operated without the used oil. In a fuel mixture according to the present invention, the amount of used oil in the mixture is not more than 60% by volume of the mixture, is in a general target range of 25% to 60% (by volume) and is preferably about 37% to about 42% by volume. Moreover, it is preferred that the used oil is filtered at a predetermined level. The preferred filter level is a 5-micron level, followed by a plurality of passes, at low speeds, through 10-micron paper filter.

1 . A fuel mixture for a compression ignition device, comprising a mixture of used oil and fuel material in a ratio that increases the fuel efficiency of the device in comparison to the efficiency of the device when operated without the used oil.  
   
   
       2 . A fuel mixture as defined in  claim 1 , wherein the amount of used oil in the mixture is not more than 60% by volume of the mixture.  
   
   
       3 . A fuel mixture as defined in  claim 1 , wherein the amount of used oil in the mixture is from 25% to 60% by volume  
   
   
       4 . A fuel mixture as defined in  claim 1 , wherein the amount of used oil in the mixture is about 37% to about 42% by volume.  
   
   
       5 . A fuel mixture as defined in  claim 4 , wherein the used oil is filtered to remove particles larger than 5 microns.  
   
   
       6 . A fuel mixture as defined in  claim 5 , wherein subsequent to the filtering defined in  claim 5 , the oil is further filtered by means of cellulose based filter, to remove particles larger than 10 microns.  
   
   
       7 . A fuel mixture as defined in  claim 6 , wherein the cellulose-based filter comprises a 10 micron paper filter, and wherein the filtered oil defined in  claim 5  is provided by the oil at slow speeds and a plurality of times through the 10 micron paper filter.  
   
   
       8 . A fuel mixture as defined in  claim 3 , wherein the used oil is filtered to remove particles larger than 5 microns.  
   
   
       9 . A fuel mixture as defined in  claim 8 , wherein subsequent to the filtering defined in  claim 5 , the oil is further filtered by means of cellulose based filter, to remove particles larger than 10 microns.  
   
   
       10 . A fuel mixture as defined in  claim 9 , wherein the cellulose-based filter comprises a 10-micron paper filter, and wherein the filtered oil defined in  claim 5  is provided by the oil at slow speeds and a plurality of times through the 10-micron paper filter.