FUEL VAPORIZATION, DOUBLES MILEAGE

[exxcomm0n]

More burbles forth.......

Let's say you take a pipe the size of the air induction and wrap it one complete turn around the exhaust manifold so that each end is pointing a different direction, and have the air be pulled from the air filter/HHO injection area ( I just like it's complete combustion/clean emission aspect a lot) through the top of the pipe wrap where fuel injectors are arrayed throughout the length so that each injector is facing a smooth area of the exhaust heated pipe to create fumage in response to acceleration demands.

Maybe mount squirter tubes connected to injectors a little farther than right next to the manifold and in the bottom area where the tube is sandwiched by the engine block, manifold, and down pipe.

Since running on fumes could be seen as running "ultra-lean" and creating more engine heat (although some say that has not been an issue yet), wouldn't a passive heat exchange be beneficial?

Oops! Just thought about the air induction cooling too.
Hmmmmmmmm........

Maybe just make the fumage chamber in that sandwich area (piping the HHO output to there) and have individual pipes (ending in a one way valve that can withstand combustion) running to the old injector locations and let piston vacuum draw in the fumes necessary for throttle demand.

Are there propane injectors as well as carbs?

Doesn't the air quantity needed decrease a bit?

Just some thoughts.....trying to see the least invasive modification with the best return.

[TheOne]

You can also use the PCV valve for HHO/gas vapor instead of the air filter. The good thing about the PCV valve is its run under vacuum.

[z.monkey]

Howdy TheOne,

In a fuel injected system the unused gas returns to the tank, where it will cool off.  There is considerable pressure on that line, like 50 PSI.  But there are stubs that come off that line which supply the fuel injectors.  If you were to heat the injector stubs with small electric heaters designed to be applied to tubes you could get some benefit.  In modern vehicles the gas is injected very close to the cylinder head so there is less space to modify the fuel spray. 

Blessed Be Brothers...

[Zolar1]

You can preheat the incoming air by 'tee' ing off of your heater hoses and running lines to a piece of 1/3" coiled copper tubing inside the fresh air duct.

As the vehicle warms, the air warms too. Less dense air = better MPG. More dense air = more power.

And while you're at it, relocate your IAT sensor so that the radiator fan blows on it. That too will help by retarding the timing (slightly).

[starcruiser]

I would think a modification could be made to the fuel return scheme, use a pressure relief valve close to the fuel pump that bypasses the feed line back to the tank while maintaining the pressure in the safe zone for the injectors thus allowing you to preheat the fuel on the way to the injectors. I would think this would allow the fuel to maintain a warmer temp without recycling the pre-heated fuel back to the main tank.

As far as preheated air goes, earlier model cars have a air tube that pulls some heated air from around the exhaust manifold and sends it to the air breather (conventional carbs and throttle body types), some of these setups use a butterfly valve that is temp controlled as well. I am not sure of the newer models though.

My 1995 Chevy Van has this feature, it uses a flexible aluminum tube to feed the air breather neck from the exhaust manifold shroud.