I realize that gasoline is very flammable. Suppose that the gasoline
inside a gas tank were air tight and/or the only gaseous gas with the
gasoline is non-combustible nitrogen.

Suppose that this gasoline were allowed to circulate around the
engines to cool the engine off. This would then heat up the gasoline,
such that it's energetically much closer to being a vapor (unless it's
already a vapor).

As a vapor, the gasoline can be first mixed with air and injected into
the pistons/cylinders, where it explodes nicely.

What are your thoughts about heating gasoline so that its vapors
combust better?

2.7182818284590... wrote:
I think you haven't thought this through well enough.

1) Fuel injectors work with liquids, not gases.

2) The small amount of gasoline that would be vaporized would yield
very little cooling.

At any rate, heating the input mixture is counter productive in
increasing the engines carnot efficiency.

The solution to me looks like improved diesel technology. Diesels are
not only more efficient, but the fuel has a higher energy content. And
bio diesel can be made out of a wide variety of low cost stocks and have
comparable energy content, as opposed to ethanol.

Jeff