This getting beyond my scope of knowledge but I wanted to note 1 point,you mentioned that fuel would compress less due to temp-liquids can't be compressed,they exert force equally in all directions.
Gasses can however be compressed-air in a fuel line and the injector won't pop off until the air reaches a high enough pressure to overcome the injector.
Liquid fuel alone will reach that pressure everytime enough force is applied.

 

Right, removal of 100 percent of all air from fuel is possible? we both know that diesel does compress, but very little, and the reason for that is air. As air gets hotter, it doesn't want to compress, expanding. The temperature will somewhat cause the air in the fuel from compressing more than it would otherwise, how much, I'm not quite sure. When you all think hot you are thinking what? I am thinking hot as in the temperature of the air in the combustion chamber/prechamber as air gets hotter, it gets increasingly harder to compress. Ideally in a perfect world this would work much better without the presence of any air in the fuel. The amount of air in the fuel will not be enough to start combustion in and of itself, so there is no fear of autoignition, at least not according to me anyway.

thanks

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ok, so I get what you are getting at. The presence of air in the lines does have an effect on this, however, the trace amounts are not enough to transform the air present into a vapor. ex: "the bends" air, or compressed air enters the bloodstream at high pressure, if the water was say 700 deg. this possibly wouldn't be an issue, saying of course if a human could survive this supernatural feat. but the injector lines aren't human tissue and can take more pressure/heat the injector would be subject to no vapor, but a movement suddenly from a low concentration to a high concentration would cause a bursting effect similar to the bends even at high temperatures........ no, especially at high temperatures, causing a semi-fracturing process that cases the fuel to vaporize even more finely. Think mother being held by captors, she can't see her child. suddenly she spots her child and violently rips away from her captors, not realizing her own strength, rudimentary? yes, strange? very. the gas wants to be with other gasses, and is filled with potential energy "temperature/pressure", when other gasses are suddenly present a violent eruption occurs, rather from a higher concentration to a lower one, equalization, yin and yang, law of nature. I could be wrong here.

 

Well I don't have enough training in fluid/thermo dynamics to argue-or even fully comprehend what you are trying to achieve(although I think I get it?).

The examples above are not quite appropriate either,but I get that you are trying to show things try to "normalize" or find a state of equilibrium.

 

Much more better ways of getting more power from you vehicle than preheat of fuel, which has been my experience to only be required in things which store fuel in bulk that needs to be preheated to prevent "waxing" of your fuel. I've been involved with fuel systems since 1980 in turbines, and Diesels none of those systems heated fuels for performance adders, it was primarily to keep the fuel "fluid" for governing & control.

Also fuel temp high is a concern to whit the VW TDI's have a fuel cooler that cools the return fuel to the fuel tank, if one wanted to heat fuel in the 6.5 easily accomplished with the heating element in the fuel manager that GM provided for cold weather start assist, one could if they wanted to; install a thermostat control to cycle the heater on independently from the PCM to raise the temp to desired temp, also one could buy a Racor or other mfrs filter with heating element independent of GM filter mrg and elevate temps that way.

I don't know what/if any gains would be realized by preheating fuels, but from my time as shop manager for the GE/CSX railroad locomotive heavy overhauls shops where we installed and tested the latest & greatest mods to make the engines "green" and most bang for economy of fuel preheating fuel was not on the table as a performance adder.

But hey figure a way to turn on the filter mgr without back-feeding current/volts to PCM and run some tests, sometimes the theory just has to be tried even when everybody else says "No way man", ergo my "Feed The Beast mods", that many run now, and my work with the owner/designer of the ATT turbo that works so well with the 6.5.