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From: Bulent Aliev <atlasyts@bellsouth.net>
Subject: Re: [FlyRotary] Engine data
Date: Wed, 30 May 2007 20:35:45 -0400
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Bill,
There is something fishy. My engine stops within 1-2 seconds from  
shutting the fuel pump off. I'm suspecting your return line is  
restricted, or the fuel pressure is too high? Watch your fuel  
pressure gauge and see for how long the pressure stays up..
Buly

On May 30, 2007, at 8:27 PM, Bill Schertz wrote:

> Okay Ed,
> Enclosed is a chart of some data from my second engine run. Clearly  
> I have more work to do, since my coolant out temperature is higher  
> than my coolant in temperature!! I thought I had the calibrations  
> done, but they are different sensors so I will have to recalibrate  
> them.
>
> Looks like you can tell when the oil thermostat opened. Temp was  
> climbing steadily and then leveled off.
>
> Lots more work to do. The engine is running very rich, I think I  
> need to use mode 3 to reduce injector flow rate. Also have the  
> following phenomena -- when I shut off the fuel pumps, the engine  
> continues to run just fine.I stopped the engine by shutting off the  
> injectors.
>
>  My last experiment was plugging the inlet and outlet lines (they  
> currently are drawing/returning to a 5 gallon can) and then  
> starting the engine without turning on the fuel pump at all (there  
> was residual pressure showing). The engine ran for 3 minutes, and  
> really smoothed out as the fuel pressure dropped to about 8 psi,  
> and the fuel rich indicator on the EM-2 moved down into a  
> reasonable range.
>
> I think what is happening is that the fuel filters are mounted  
> horizontally, and can trap some air in the top of the filter, which  
> then serves to maintain the flow to the engine.
>
> How fast does your engine die when you shut off the fuel pump?
>
> Bill Schertz
>
>
>
>
>
> Bill Schertz
> KIS Cruiser #4045
> <Engine_temps.jpg>
> --
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