Water Injection (Was: Re: Wide Ratio O2)

[Bernie Jacobsen]

Raymond,

If the water injection can stay simple and inexact without injecting too
much (limiter??),  the only error or problem would be an occasional knock,
in which case just back off the throttle a little.

What about injecting pure (or diluted??) toluene? As Kevin says, kind of a
dual octane system.

High vacuum = low octane
low vacuum =  High octane  (very high octane?)

Seems possible, even probable, to me.

^Bernie


>I think water injection must be as accurate as the fuel injection.Its no
>use ,if you
>have a precise measured quantity of fuel and spark and then just dump in
>some
>water.
>Maybe its possible to use a efi system with staggered injectors, and use
>the
>second injector set, to deliwer water?
>Will the injectors stand the water?Is it possible to use a standard high
>pressure
>fuelpump? Maybe ad some anti corrosion stuff?
>By adding water ,the carbon deposits in the combustion camber is cleaned
>away.
>A "dump" system is good for cleaning up the carbon hot spots,that can
>create
>pre-ignition.
>By adding water Its possible to have higher top cyl.pressure without
>detonation, than with just
>adding  fuel.
>Just some brain storming:Dual fuel set up! Staggered injectors with high
>octan
>fuel coming in as second set.Slow running on low octan fuel.
>
>----------
>> From: Raymond C Drouillard <cosmic.ray at juno.com>
>> To: diy_efi at efi332.eng.ohio-state.edu
>> Subject: Water Injection (Was: Re: Wide Ratio O2)
>> Date: 22. mars 1998 18:17
>>
>>
>> On Sun, 22 Mar 1998 10:59:53 -0500 "Bernie Jacobsen"
>> <bcjac at ix.netcom.com> writes:
>> >Does anyone know if water injection systems are still available (I
>> remember
>> >them from the 70's and early 80's, but haven't seen them since)?
>> >
>> >Can you still buy systems? parts? Or is 'home brew' the only option.
>> >
>> >I'm interested in it for a '85 Motorhome with a 454.  I would like to
>> >advance the timing for better fuel mileage.
>> >
>> >^Bernie
>>
>> I believe that J. C. Whitney still sells them.  This is second-hand, but
>> I was talking to the mechanic/owner where I have my Jeep serviced.  He
>> said that it is hooked into a vacuum line (PCV?) and the vacuum is used
>> to draw in and atomize some water.  I'm not sure what triggers the
>> controller.
>>
>> If I was going to homebrew, I would use a windshield washer pump and
>> resovoir.
>>
>> Ray Drouillard
>>
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>