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On what kind of engine and vehicle?

high temps and gasoline vapor doesn't walk hand-in-hand. It is unsafe.

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I'd heat your gas line to keep it liquid under pressure, and as it injects the fuel, it vaporizes as it comes out. You'll have to work to the lowest common denominator as you do the temperature and pressure calculations to work with the lowest combustion temp / vaporization temp component in gasoline.

Well, if you can build something that doesn't feature a warmed-up can with fuel inside.

But on the other hand, you are probably recreating the fuel systems the early engines used.


"The rotary-brush atomizer used by Marcus Siegfried was an integrated fuel reservoir and feed unit. As the pulley-driven brush revolved, it picked gas out of the reservoir and threw it into the air. The suction effect created by the pistons drew the mixture into the engine.
Lanchester's wick carburetor improved on the atomizer. It consisted of several compartments. The bottom compartment held fuel. Wicks extending from a compartment above became saturated with fuel.

Getting vapors given off by the wicks to mix with air was achieved by drawing air into the compartment above the fuel storage area. The fuel/air vapors then flowed to the engine, passing first through wire mesh that served to filter out impurities. This was the world's first carburetor fuel filter."

Your safest bet would probably to heat up the intake air.

Given that gasoline has a specific heat of about 2.22 kJ/kg*K, and air has a specific heat of about 1.01 kJ/kg*K. Gasoline takes more energy per unit mass to heat up, as compared to air, but your engine does ingest 14.7 grams of air for every gram of gasoline, so there is that.

Here's a quick thought experiment: Let's say that you have 14.7 grams of air in an easily manipulated can, and 1 gram of gasoline in a separate container. Both are at 0 C. Heat the air so it's now 40 C. The gasoline temperature can remain the same. Now, mix the two together so as to obtain a uniform mixture. You will find that the temperature of the mixture is now almost 35 C.

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That's pretty much how any non-propane camp stove works.

WhisperLite

Pressurized gasoline runs through a coil directly heated by the flame, exits the burner nozzle vaporizing instantly.

This is a product sold for years by a major corporation and they haven't been sued out of existance yet.

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