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Date: Sat, 19 Feb 2005 00:18:37 -0600
From: Jim Sower <canarder@frontiernet.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Water in the fuel
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<... If the injectors only pumped ... ECU does not know it is water ... Should not that keep up till the water is done ...>

I suppose it should, but it doesn't.  The same scenario would apply to 
carburetors.  If you windmill long enough the water will pass through 
the system.  Part of the issue is that water has a nasty habit of 
rearing its ugly head right after takeoff when you really don't have 
enough time to crank it all through the engine.

It could work, it should work, but it doesn't work.  Don't bet the farm 
... Jim S.

If that

Eric Ruttan wrote:

>There is a huge differance between water in the fuel and water injection in
>the intake.
>
>I used to race/daily drive a water (in the intake) injected engine.  Never
>had a problem, and cant see how one would.  Never read anything on water
>injecting being bad for an engine.  Read plenty on how it is good.
>Especialy if you got a turbo.
>
>Water in the fuel is interesting tho.  Assuming 4 injectors flowing~15 GPH,
>just how big a slug o water is required to stop that engine?  Can water stop
>our engines?  If the injectors only pumped water the engine would lose
>power, but still windmill.  As long as it windmilled, the injectors would
>still flow, as the ECU does not know it is water.  Should not that keep up
>till the water is done?  When the water is passed the engine restarts, power
>comes back.
>
>??
>
>Eric
>P.S.
>I still think a capasitance contraption in the fuel system, to tell me if
>water is in it, is a great idea.
>
>  
>
>>I used to do that.  I used a regular spray bottle with a trigger like
>>you find around your laundry.  You had to get the engine up to over 2000
>>rpm or it would quit.  The object was to blow all the carbon and scale
>>    
>>
><snip>
>
>  
>
>>emulsified (which we can't reliably do) water is a bad thing ... Jim S.
>>    
>>
>
><snip>
>
>
>
>  
>
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>
>
>  
>