What is the efficiency rate if gasoline and diesel mixture are sent into a single cylinder petrol engine with the composition of 60/40 ratio gasoline/diesel? Please explain to me in details about the result and consequences, and remedies also.
I am working on reconfiguration of fuel mixture for I.C.engines.
The hydrocarbons of gasoline contain typically 4-12 carbon atoms with boiling range between 30 and 210 °C, whereas diesel fuel contains hydrocarbons with approximately 12–20 carbon atoms and the boiling range is between 170 and 360 °C. What makes a gasoline with high "octane number" are the branched hydrocarbons while what makes a diesel with high "cetane number" are the straight chain hydrocarbons. Therefore, blending gasoline & diesel will have antagonistic effect lowering the efficiency of both. Anyhow, your idea is novel & it is worth trying to see the results.
Diesel and Petrol have different volatility. Petrol is more volatile and evaporates more easily than diesel with the same volume fraction. So, I think you will need to work on the carburetor (if it is not a MPFI or CRDI) or the injector (MPFI or CRDI) to match your requirements.
In case of an injection, a CRDI generally requires a pressure of 2000 bar to produce a 20 SMD (Sauter Mean Diameter) droplet size whereas a MPFI requires just 1/10th of the pressure to develop the same droplet size. So, you need to decide the fuel pump capacity based on this.
Moreover, the fuel filters of Petrol and Diesel would be different due to their different viscosity.
Most likely you would not be able to run a petrol engine on such a fuel mixture due to insufficient octane number of the fuel. The engine is likely to knock violently even at very low load operation unless you radically reduce the compression ratio. This is the same problem that early internal combustion engines had due to low fuel quality (insufficient octane number) that prevented compression ratio to be higher than about 4.
Can anyone help me to find out the way of atomization of both gasoline and power diesel (80/20) other than carburettor device. I have reformed the diesel H-C chain structure in fuel reforming process. At least give me some information sources.
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