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tips, technology, tools and techniques related to vehicle driveline components

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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

No fuel pump ?
Posted by: roverman
Date: January 16, 2012 11:43AM

What if your fuel pressure was provided by "inert gas pressurization" of the fuel tank, 11 psi. ? Being inert and without combustion vapors present = safer ? roverman.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: No fuel pump ?
Posted by: BlownMGB-V8
Date: January 16, 2012 03:57PM

11 lbs doesn't seem like much but on the top or bottom of a standard size tank it generates around 7000 lbs of pressure so pay lots of attention to your fuel tank. This also explains why most pressure tanks are round. Bleeding off hydrocarbon laden gas to depressurize an empty tank also can be risky business, especially in the dry air of winter. But there's no reason it can't be done.

JB


Bill Young
Bill Young
Kansas City, MO
(1337 posts)

Registered:
10/23/2007 09:23AM

Main British Car:
'73 MG Midget V6 , '59 MGA I6 2.8 GM, 4.0 Jeep

authors avatar
Re: No fuel pump ?
Posted by: Bill Young
Date: January 16, 2012 06:02PM

Art,this idea isn't new by any means and has been used for almost a hundred years in race cars until the advent of reliable electric fuel pumps and engine driven vane type pumps on fuel injected cars. This photo of a typical 1920s era Model T based circle track racer shows the fuel pressure pump mounted on the side of the cowl. (photo from the Museum of American Speed)
Although they used plain old air to pressurize the tanks, I'm not aware of any real problems with explosions as the fuel air ratio was always quite on the rich side and not easy to ignite.
14316_L_16442773.jpg
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DiDueColpi
Fred Key
West coast - Canada
(1367 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: No fuel pump ?
Posted by: DiDueColpi
Date: January 17, 2012 05:37PM

I'd be more concerned about a leak or a collision.
How do you stop the fuel from spraying everywhere?
I'm going to assume that this would be done to save weight.
But the heavy duty tank etc. that would be needed for this would eat up any weight savings in a hurry.
Most race organizations either won't allow pressurized fuel out right or regulate it very closely.
Here in B.C. it would not be legal for road use.
At first glance it's a neat idea.........but........
Cheers
Fred


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