LT1 LOW FUEL PRESSURE

[Mike Rolica]

Oh, well in that case let me see.  You need the flow energy equation  which
is also related to Bernoulli's equation.
Work=p X volume. Now Vol. =  weight/y(specific weight) so  W=pw/y

The total amount of energy in the pipe would be E= flow energy+potential
energy+kinetic energy
E=FE+PE+KE
   =wp/y +wz+w v(squared)/2g

Now in your case we can omit PE because of the very minimal change in
elevation

Now due to the law of conservation of energy :-)
E1=E2=E3   along any point of the pipe(
 Wp(a)1/y+ v(a)2/2g= wp(b)1/y+ v(b)2/2g


So eliminating values of zero and w we get p(a)/y= (v(b) 2 -v(a)2 )/2g
using continuity equation Aava=Abvb where vb=va(Aa/Ab)

Now with gr 12 math skills you should be able to finisher up
Mike Rolica 
EXT. 260
 :-)


	-----Original Message-----
	From:	digi [SMTP:digi at saturn.terahertz.net]
	Sent:	Wednesday, October 20, 1999 11:58 PM
	To:	Mike Rolica
	Subject:	RE: LT1 LOW FUEL PRESSURE

	Thanks,

	I was aware that Q=AV, but I don't know how to calculate the
velocity from
	psi/diameter. I know theres some formula - what I was actually
hoping to
	apply this formula to was something else, the oil cooler actually.

	Can't find anything about such formulas on the www, but I have no
idea as
	to what to search for. I dont need it to be precise, such things as
	friction loss can be omitted.

	Guess I'll have to get a clear hose, put some dye in the pil, mark
off the
	feet, start the engine and time how long it takes to travel from one
side
	to the other :) I dont think it'd be too accurate though!

	- Brian

	On Wed, 20 Oct 1999, Mike Rolica wrote:

	> Well I'll check with my fluids textbook in front of me  max flow
velocity
	> for pump outlet is 25 ft/s
	> Q=Av
	> A is cross sectional area of id of pipe
	> Q is flow rate :-)
	> Mike Rolica
	> EXT. 260
	>  :-)
	> 
	> 
	> 	-----Original Message-----
	> 	From:	digi [SMTP:digi at saturn.terahertz.net]
	> 	Sent:	Wednesday, October 20, 1999 3:58 PM
	> 	To:	gmecm at efi332.eng.ohio-state.edu
	> 	Subject:	RE: LT1 LOW FUEL PRESSURE
	> 
	> 	Speaking of fuel pressure, how can you calculate the max
flow rate
	> from
	> 	psi/hose size?
	> 
	> 	It's been so long - I cant remeber.
	> 
	> 	- Brian
	> 
	> 	On Wed, 20 Oct 1999, David Cooley
	> 	wrote:
	> 
	> 	> At 10:02 AM 10/20/1999 -0700, you wrote:
	> 	> >Yes, fuel hose does get soft.  Who knows where that
	> 	> >sender has been?  I don't know what externally ribbed
	> 	> >hose is, tho.
	> 	> 
	> 	> 
	> 	> A french tickler?
	> 	> 
	> 	>
===========================================================
	> 	> David Cooley N5XMT Internet: N5XMT at bellsouth.net
	> 	> Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
	> 	> We are Borg... Prepare to be assimilated!
	> 	>
===========================================================
	> 	> 
	>