2 stroke Water injection

[Mike Fahrion]

> The problem with washer pumps, unless they are mounted at the same height 
> as the injectors, their output is increadibly low.  Can't refute or confirm 
> the 5psi figure you quoted, however from the time it takes me to push the 
> washer button, to the time the clear poison sprays on the windshield, is 
> about 4-5 seconds.  That wouldn't work in a water injection application.

Actually, it worked great, the problem is that at such low pressure 
you get a stream, not a mist - this led to a 0.4 second lag from 
start of injection to full power gain.  Power gain started 0.1 
seconds from the push of the button.  I believe the additional time 
to get to full power was a result of the time taken to fully vaporize 
the water.
 
> One possibility to consider, is to utilize a water-based fire extinguisher, 
> take off the head and valve, and create your own end cap with an attachment 
> fitting.  This allows you to locate the fire extinguisher anywhere, and you 
> can pressurize it up to 200psi.  Then, you use a 12V fast acting valve to 
> control the release of water in small increments into your post-turbo 
> stream.  Since the turbo is adding 5-10 lbs of boost, as long as you have 
> about 20psi in the tank, mathematically you should be okay.
> 
oops - maybe we're on different subjects - this would be a bit heavy 
for a 200-300 pound vehicle (2 stroke) application.  For the car app 
I think this would be a great way to go.

> I believe you could more accurately meter the water spray by using a 
> solenoid rather than a washer pump.

yes - this would be much preferred.

-mike 
mfahrion at bb-elec.com