Fuel pre-heater: Do they work

[vzon17]

Best info

I have found is from Eagle research.
Eagle-Research:

this guy knows the knowledge to great depth and explains it in plain english. I have bought many of his books and highly recommend them. the way cars are designed these days is they only use about 1/10th of the fuel to run the engine. the rest of the fuel being put in there is to put out the fire and cool it and then its just burned up in the catalyitic converter. Enough fuel comes out of an engine to run anotheer whole engine.
Better way is instead of using fuel to cool, use water to cool the combustion.

Warm air intake does help economy because warm fuel vaporises easier than cold fuel.
Fuel preheater also works good. its is only one of many things one can do to increase the milage easily.

there is another website also tha has good info

Articles on Fuel Mileage

[rdmwc]

rising from the dead!
i have been pondering this idea for a while now and am almost ready to start experimenting. here are my thoughts:
get an electronic exhaust cuttout but instead of having a switch, have it hooked to a thermostat, like from an oven... route the exhaust from the cuttout to a chamber with an outlet. this chamber would have an extra length of fuel line coiled inside it preferably just before the fuel rail. there would then be an insulated section of fuel line with a temp sensor (from oven?) the thermostat would be set to around 400*F... when the fuel reaches that temp the thermostat would close the exhaust cut out so that the exhaust cant enter the chamber, thus controlling the temp of the fuel in the lines.
now i know people have discussed concerns with vapor lock and other issues, which i too have looked at. the fuel shouldnt vaporize in the line due to the pressure it is under from the pump. it also shouldnt go boom since there is no oxygen in the fuel line as well as it being just under its auto ignition temp at atmospheric pressure.
this could also be done to the intake air, but use the engine coolant.
this should increase fuel economy and increase power. reason being, we would be igniting a much higher percentage of gasoline with each injector pulse. meaning, each injector pulse would require more oxygen even though there has been no change in the injector pulse width... more power for same amount of fuel. more power with less pedal. the computor would see a rich mixture and try to pump less fuel resulting in better fuel economy.
any thoughts on this?
im falling asleep, will explain better when i am awake.

[Cherryman]

I did not find the shell Opel 367 mpg car in this post yet.

So here it is:

Shell Opel

Back in 1973 they had a car doing 367 mpg with pre-heated fuel.

Of course this tech was shelved.

[Aaron]

open car

Cherryman,

Actually, I don't believe it was shelved.

It was a proof of concept.

It worked but they probably drove at 5 mph and it had no power - it was a flat land drive.

Check out the last several posts here:
http://www.energeticforum.com/renewa...itro-cell.html

You might find it helpful to see more about the Opel.

[rdmwc]

you could also use this chamber to heat water to use the water vapor to cool the charge.

i am currently working on heating the fuel rails with the coolant directly from the engine and see if that will increase the fuel economy.

[rdmwc]

my truck has a heated throttle body to keep it from freezing up in the winter and since its spring here, i hooked up those likes to 1/4" copper tubing and wrapped that around the fuel rails. i then wrapped it all with header insulation. havent ran any tests yet.
when i had the fuel rails off, i looked inside and wondered : what if i drilled a hole in the end of the fuel rail and (after crimping one end and soldering it shut) inserted a length of the 1/4" copper tubing inside the fuel rail?? i realize this would cut down on the volume of fuel in the fuel rail. i would solder the tubing upon exit of the fuel rail to seal the rail. then connect that to the engine coolant system on the hot side?? this, to me seems like the most efficient way to heat the fuel in the rail with the coolant. now, if i could just source a new set of fuel rails for my truck for CHEAP! haha

any opinions on this?

[rdmwc]

i think i will take my 4 stroke lawn mower and make a carburator spacer the has tubes through it and re route the exhaust through the tubes to heat the fuel mixture and see how it works... maybe even heat the carb. bowl a little?

[justing]

I have done a few mods to my car (2004 kia optima v6) to bring up the mileage. Open element air filter to bring warm air into the engine. This will lean the fuel some and change the timing. Mobil1 full synthetic 0W20 oil. 42psi in the tires. Non ethanol gasoline. VOLO fuel saver chip. I went from 22mpg to 28.5mpg.

[justing]

This is the fuel heater that I plan to install soon.

fuel heater.jpg

fuel heater2.jpg

[truesearch]

@justing:

Please keep us posted to your mod. I'm curious to know what kind of fuel-echonomy(MPG) change this makes.

truesearch

[Marso Green]

Just thought I'd mention that some performance cars have fuel coolers, not heaters. I wonder what that means, given the posts of this thread

[citfta]

Not quite right

Diesel and biodiesel especially are prone to gelling at temperatures below freezing. However there are additives that will help to prevent this condition. Also it is only a temporary condition. When the fuel is heated it will go back to its normal condition. The gelling only affects the fuel going through the filters. As soon as the engine is warmed up the heat and pressure of the injection pump will melt any gelled fuel that gets into the pump. I have been driving diesels for over 10 years and have used both regular diesel and biodiesel in my truck and car. In the winter I use additives that can be bought at any Walmart or auto parts store when I am using biodiesel. Regular diesel is already treated by the manufacturer to prevent gelling in the winter. I hope this clears up any confusion about gelling fuel.

Diesel fuel petrol and biofuels gel at conditions below cold. Paraffin deposits form in the petrol, making it gelly-like and flaky. As these revoked flakes complete through the narrow, they gum up its microporous area. Within a few months, the petrol will no longer circulation through the narrow to the hypodermic injection system. The results: the engine drops power and prevents running. you can find it on Eagle repair problems.

Respectfully,
Carroll

[justing]

I already have a length of aluminum dryer vent tubing bringing air from the top of my exhaust manifold to my filter.

In the performance arena the fuel chillers are used in an attempt to get more fuel molecules into the cylinder to produce more power.