Vaporizing Hydrocarbon fuels

[Tarkus]

Understanding that liquid fuel will not burn, and needs to be vapor to achieve combustion (along with a oxidizer and ignition source) prompted a number of vaporizing carburetor designs over the years (including a couple of my own) in search of higher milage/efficiency and maybe lower emissions. The designs that I have played with in years past have been moderately successful but plagued with problems and proved impractical so got left by the wayside when the A.D.D. kicked in.
As with most things i just put it on a shelf in the back of the brain, where occasionally it worms it's way forward in my conciseness and proceeds to distract me for a short while.
The last couple of years some very basic concepts on the vapor keep niggling at me.

1. a sphere i.e.. fuel droplet has the smallest surface area for the greatest volume, vapor only occurring on the surface?
2. Gasoline components start to vaporize (but not all) @ 190f and up @ sea level.
3. Hot vapor mixed with air in carb type setup extremely volatile (much like HHO)
4. Heated fuel likes to vapor lock fuel lines

So what if
we take a fuel injection system boost the fuel pressure to say 100psi and heat the fuel to say 300deg F, install an after market computer (programable).
Fuel under high pressure should be able to be heated without boiling in the fuel rails, yet flash to vapor as it exits the injector.

Just a niggling idea

David

[mbrownn]

Makes perfect sense, but these are the things to consider

1) what is the boiling point of the fuel at 100psi?
2) what effect will this have on the seals in the fuel system?
3)In some fuel systems, some of the fuel is allowed to return to the fuel tank and in such cases the fuel would have to be cooled before returning

It may be worth while testing this by passing the fuel through a small heat exchanger mounted close to the injectors. The heat exchanger could be heated by the engines cooling system which is normally around 95 Celsius. Im fairly sure this will already have been done, but I have never noticed it on any vehicle I have seen.

The same technology can also be used on diesels, and when the engine is hot you can switch to uncracked vegetable oil.

[mikrovolt]

It has been shown that preheating fuel can improve mileage.

Having a volume of liquid gasoline maintained at a constant temperature and located near intake would be an improvement in winter and have diminishing return in summer. Using the engines hot water is practical.

After that it gets complicated since demand for more fuel depends on the load at any given time. Keeping the droplet size small and constant by instantaneous fuel pressure increase and electrical spark intensity would require expensive equipment. Expense and priorities is usually why things don't get finished, keeping a journal allows pick up where you stopped.

[Stealth]

on my setup, I am running hot water from the heater hoses to the fuel rails, with copper tubing wrapped around the fuel rails. It reaches a temperature of around 195 degrees. I have gained around 5 MPG from this setup. The antifreeze flows from one heater hose around the fuel rails and into the other heater hose, both using 1/2 copper pipe and 5/8 heater hose. Good Luck. stealth