Looking for help building a Gas Vapor system

[racprops]

OK here is the deal.

We have strayed far from my original thread on helping me build a Gas vapor system.

I did not mind too much as I felt I needed to show I know about cars etc.

Now I want at least one simple question answered: Does diesel have as many additives as gasoline??

And #2 what is the full vapor temperature of diesel VS gasoline??

Otherwise I see no point in responding any more to this thread as we are not talking about gasoline vapor and have not for a number of pages.

Rich

[oil pan 4]

It looks like diesel is higher.
But remember it's also distilled under vacuum.
Diesel also only has an octane rating of about 25 making it unsuitable for a spark ignition engine.

[racprops]

Originally Posted by oil pan 4

It looks like diesel is higher.
But remember it's also distilled under vacuum.
Diesel also only has an octane rating of about 25 making it unsuitable for a spark ignition engine.

Thanks can you give numbers??

OK As a injected fuel, no good but it might be better as a Vapor.

[elhigh]

Originally Posted by racprops

Well as I am 68 and have been driving from 14 (scooter) I could NEVER fully trust a carb to not stumble at say a light: cold.

Rich

You have a lot more experience with the less-capable carbs and it has colored your opinion of all of them. Not without reason. I can appreciate that.

I don't recall if anyone mentioned it earlier, but talking about carbs reminds me of carb heat in light aircraft. Have you considered that in your gas vapor pursuits? NOTE: don't ask me any detailed questions as I pretty much only know that it exists, how it works is beyond me. There are some private pilots on here who I'm certain can speak a lot more intelligently on that subject than I can.

[racprops]

First you might be right as I always owned older used cars...

Carb heat I am fairly sure is using the exhaust heat to keep a carb from icing up in flight, and that will not work for my device.

Thanks anyway.

Rich

[oil pan 4]

Yeah the heated air intake is to prevent icing and increase fuel economy at cruise.

Gasoline fully vaporizes at something like 300°F and diesel is more like 400°F to 600°F.

[LittleBlackDuck]

Originally Posted by oil pan 4

Yeah the heated air intake is to prevent icing and increase fuel economy at cruise.

As a private pilot I can assure you that carburetor heat is only used during low throttle periods such as approaching to land or flying in extremely cold conditions. It's sole purpose is to prevent carb ice. Using carb heat in cruise is a recipe for engine damage due to detonation.

Simon

[racprops]

Originally Posted by oil pan 4

Yeah the heated air intake is to prevent icing and increase fuel economy at cruise.

Gasoline fully vaporizes at something like 300°F and diesel is more like 400°F to 600°F.

OK that maybe true with pure gas and diesel, BUT I have read that to fully vaporize ALL the junk in our fuel we need the 600F plus...other wise you end up with gunk plugging any vapor system.

With airplanes I was aware carb heat is like the wing warmers/deicing, only needed and use in bad weather...

Rich

[cRiPpLe_rOoStEr]

Originally Posted by LittleBlackDuck

As a private pilot I can assure you that carburetor heat is only used during low throttle periods such as approaching to land or flying in extremely cold conditions. It's sole purpose is to prevent carb ice. Using carb heat in cruise is a recipe for engine damage due to detonation.

I got quite surprised when I figured out that some older cropdusters were having the carburettor heat removed and, despite the possibility of using some alcohol-based de-icing fluid and the success of dedicated-ethanol variants of the Embraer Ipanema, no other provision to overcome carburettor icing is fitted to them. BTW have you ever experienced a situation when you effectively had to rely on a carburettor de-icing or anti-icing method?

[racprops]

Found this:

At what temperature does gasoline vaporize?
What kind of heat would have to be applied to a closed circut container to vaporize the gasoline inside?
I'm an amature MAD scientist
Update: OK I'll spill. Gasoline carburetors are about 30% effficient. A gasoline engine CANNOT burn a liquid fuel. The carb turns the fuel into a spray, tiny droplets that do ignite but ver ineffeiciently. That why all the smog pump carp. To reburn what passed through. These are called hydrocarbons. OK back to the spill. If the gasoline can be turned from a liquid gas into a true vapor, which is MUCH more explosive than liquid gas, it will burn at 100%. The result of that is a shocking improvement in fuel mileage. Carbs have been built. IN 1936 Charles Pogue built one that milled out an amazing 200 mpg. Interestingly enough his shot misteriously burned down after he refused to sell it to an oil company. Its no secret though. The plans still exsist. You can find sketches on line. There are three types. heat, cold and electric vaporization. All of which improve mileage from 30 to 100%... a V8 that gets 60-80 mpg? its already been done.


AND:

fuel boils between 104-401F and from what I've read it vaporizes at 450F, and will self ignite at 460-572F. i have also read up on this and am currently thinking of building my own vapor carb, mainly because i am getting around 10 mpg on my old school carb.I'm going to start testing at 50F to see how the gas reacts and take it farther from there. i also thought about using water. the engine will only get you to 250F before it over heats if it hasn't done so by that point, but it might work. so i will see how far i can get with other methods. from what I've read we can't sell what we invent so if i find a way to get it off the ground I'll use it on my own vehicle and share the proven facts with others. just remember that the vapors are really explosive, you don't want to miss calculate and blow up your test facility. also to get 100mpg i saw something that says you would need an air/fuel mix of around 75-1.

AND:

The flash point of diesel fuel is 100 deg. F. for type 1-D fuel. And 125 deg. F. for type 2-D fuel. And 130 deg. F for type 4-D fuel.