So I've been looking into engines running on gasoline vapor and I have to say I'm intrigued.
Seems so simple I feel there has to be a catch, but when you think about it all you're burning is the vapor anyway...

Just for clarity I'm talking about running a hose from the top of a gas "filled" container straight to the air intake with no other air going in. The air is sucked into the gas container through a tube that goes down to the bottum.

I feel like I really want to try this. Any thoughts?

 

There is a video on the YouTube of a guy running his Cheby on nothing but a vapor hose from the tank. He never puts the engine under a load though.

 

Thank tom ogle http://www.rexresearch.com/ogle/1ogle.htm and the other system http://www.legendarycollectorcars.co...clusive-video/

 

I heard about this as well, and felt it was worth a try. So I think I would start with a lawn mower. Its much cheaper, and if you can get that to work fairly well you could expand to larger things. maybe a generator than motorcycle, if all goes well hit up the car. Good luck and keep us updated.

 

I would love to see someone try and figure this out for an off-roading jeep. Factor in all the bumps and extreme angles.

 

Well, gravity would have far less influence on vapor than it would say, liquid gasoline. With that in mind, I would assume a vapor fuel system would be less susceptible to things like starvation due to bumps and extreme angles.

On the other hand, Mr. Ogle applied for and was granted a patent for this technology back in 1979. Perhaps the technology wasn't properly published or maybe it was even suppressed by big oil and that's why it never caught on but I suspect it has more to do with the fact that it doesn't really work

Prove my suspicions wrong, Mr. Laredo!

 

I don't see how you'd supply enough vapor under load to sustain power. I'm assuming one would need a huge reservoir and healthy pump capable of such an act. not to mention the explosion risks with such a system. don't be scraping rocks haha

 

This is very possible and I ran my jeep on nothing but 1 gallon of gas and let my jeep run for 45 minutes and the level of gas never even moved off of the line I marked. I am making a prototype right now out of stainless steel and putting filters and valves on it to regulate the air intake and I'm installing a baffle plate that connects to my throttle cable the allows the baffle plate to turn and allow more vapor to come in the intake tube to the engine. The key to the right amount of bubbling I'm suspecting is in the spiraled stainless steel tubing I'm installing inside. The vortex of the tubing I believe will give more rapid intake of air.

 

Propane.

 

The greater the load you put on it the more air goes through, causing more bubbling action, causing more vapors.

As far as my gravity and bump statement, I was wondering about the gas sloshing in the tank and getting sucked up into the tube causing it to suck in the liquid gasoline instead of the vapors.

While some kind of spiraling might make some advantage, I don't think the vapors would behave the same way an injection system would behave having to mix the fuel and the air ratio through injectors misting the gasoline from the liquid form.

 

I was thinking about some kind of baffling on the inside of the tank that would prevent liquid from entering the hose. Also a secondary container could possibly solve the issue.

As for working under load etc I think some research is in order. To my understanding the fuel sprays in and mixes with air to essentially create vapor. Figure out how to mimic the ratio and increase it under load and you're in business.

 

Has anyone made any progress on this? Just lifted my Heep 3" and gas mileage sucks even worse. No surprise there.

 

I need to build my jeep a gas bong. I need instructions!

 

It's been done before. Not a lot of info out there, but the 1899 Oakman-Hertel Runabout used a gasoline vapor engine. Basically some exhaust tapped from the muffler was routed through the fuel tank to vaporize the fuel, which was than pulled through a venturi into the mixing valve. The video on the above link explains it better than I could. It was claimed that it could run up to 75 miles on a gallon of gasoline (if you could keep it running that long).

 

So they basically used the hot exhaust air to warm the fuel up and make it bubble? Causing more vapors?