|
|
Ernest,
My impression is that the problem arises from the difference between venting vapor through a carb jet (which has to be big enough to supply all 4 or 6 cylinders) and the orifice of an injector, which is (I think) smaller. The injector opens for a short pulse, and the vapor flow is small, so the bubble doesn't clear out easily.
As a point of interest, there is an E-racer at my home airport that does the fuel recirculation up to the cold side of the firewall, and only a single line goes forward to the injectors. That system has been working well, with no vapor lock, and seems similiar to what you are proposing.
Bill Schertz
KIS Cruiser # 4045
----- Original Message ----- From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, March 16, 2005 9:16 PM
Subject: [FlyRotary] Returnless fuel systems
But what happens in carbuerated systems? There is a bowl there collecting and holding a 1/2 cup of fuel along with the delivery lines and the pumps only deliver a few pounds of pressure vs the 10's of pound in an injected systems. How do the carbs get away with it?
Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
|
|