Brian D. Cain wrote:

snips...

My problem is this:  First off, I'm missing any reference to BSFC
concerning the rotary engine in these calculations.  Secondly,
when I figure the amount of fuel, barring the fuel pump(s) running
out of steam and/or related rail pressure (indicative of a volume loss)
problem, I come up with a flow rate of 4.549lbs/min out of 2x550cc/min
injectors alongside 2x720cc/min injectors operating under a rail
pressure of 46psi.  This comes out to somewhere over 72gph.

I believe at this point my math is missing something because, if I cram
this number into a direct, 12:1 ratio of air/fuel, attempting to solve for
the amount of air that can move at the same time unit of lbs/min, it
calculates to well over 54lbs/min.  This seems a bit outrageous and I'm
scratching my head on it.  I'm trying to honestly figure out what needs
to be addressed in my current fuel system.  I already know the pump I
use isn't up to par and I'm starting to believe that having 720's in-place
of 550's in the secondary 3rd and 4th injector ports is a bad idea.

Anybody have any input on this?

B

Brian does this help? I found it in a Hot Rod publication called
Fuel Injection Bascis. It is in the form of a magazine on the
news stands now. There is another table for fuel pumps that
is also very interesting.

Paul Lamar
 
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