Fuel Vapour System - Got it working!!

[Mark69]

@ Plasma,

You can use the injection system from a forklift to use a gaseous fuel into your engine.  If you dont want to spend money on that. Or u can use a butterfly valve between a tank where the liguid is turned to a gas and the intake system.  You can adjust the the valve to get your idle correct.  Just have the liquid fuel changed to gas b4 starting the engine.  You can also run a pressure valve in the tank to relieve too much buildup of gaseous fuel back to another tank that is can be cooled and returned to liquid back to the fuel tank.  It sounds like a lot but can be done.  In a book called "Alcohol can be a gas", it illustrates how a diesel bus engine was converted to run on vaporized alcohol.  There is a lot of info in that book, which I have.  It also states that VW had experimented with a alcohol motor based on their TDI engine and it actually increased its mileage by 22%.  Remember an alcohol engines compression ratio can be up to about 18 to 1, this is where a prepared motor will do so much better then a regular gas motor just converted.

Mark 

[jadaro2600]

Hi all,

Does anyone know of a way to introduce fuel vapor into a fuel injected engine, any ideas? Or would I have to replace the intake for a carburated one? Thanks.

EFI is just that, don't hack the engine, hack the injection ratio's.  It's all about the computer in an EFI system.

[kfstevens2370]

[size=78%]Here's some inspiration...[/size]

He cut the fuel injector lines and adapted the whole thing to run on fuel vapors, used trial an error to convert a 1992 geo storm and he's getting 0.8L/100km!! -no water injection

http://www.greenoptimistic.com/2008/07/17/john-weston-vapors-fuel-463-mpg/

Hey, I was trying to find some information on this John Weston and his AVFS (Air/Vapor Flow System). The above quote is about it unless I missed it some place in another posting. Well here is what I know so far...


The vaporizing tank is a small white and blue plastic container as verified from the report. It looks like a "Personal Size Ultrasonic Humidifier". I don't even think he changed anything with it except to run gas in it instead of water. Also from the report I read that a hose is running from the top of the vaporizing container to the engine's air intake housing. In the photo of him and his engine you can see a white hose doing just that.  Using a photo of a 1992 Geo Storm GSI, ISUZU I did my best to draw in the location of his vaporizer and hose (see attached photo). He also disconnected all the fuel injectors so no liquid fuel can be used. Has any one else tried this arrangement?

[TinselKoala]

Valve cover gasket is leaking.

[truesearch]

I wish the "vapor-system" was advanced enough for concise DIY steps. I own a 1973 Ford pickup with a 360ci carborated engine (no electronics or computer at all). Currently it makes about 10 miles/gallon 


The idea of using an ultrasonic humidifier to vaporize fuel would be great ~ providing I could get at least 40 or 50 miles/gallon 


truesearch