Fuel pressure in big hose vs little pipe

["content22207" <brobertson@xxxx>]

Okay, called a science buddy on this one. Apparently something called
"Bernoulli's Principle" proves that liquid moving through a
restriction actually LOSES pressure. But it gains velocity. Fuel
entering the filter after smaller diameter metal pipe is lower
pressure than it went in, but it's moving faster and with more energy.
Guess it needs that to clear the filter (it does go back to 1/4" hose
after the filter).

He told me to think of high pressure days vs low pressure days. High
pressure days are calm and pretty. Low pressure days are windy or
stormy. All the energy is in the fast moving LOW pressure air, not high.

In my garden hose example, water squeezing past my finger LOSES
pressure, but gains velocity. That's how it's able to shoot farther
than water just running out the end.

He also claims same principle lifts airplane wings (isn't the slow
moving high pressure air under them pushing up, it's the fast moving
low pressure air pulling from above). Don't flame me -- he said it.

I'm going back to vacuum leaks. Understand them...

Bill Robertson (humanities major, not science)
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, elvisnocita@xxxx wrote:
> Bill, 
> Are you sure ? I didn't know that a garden hose can produce pressure
itself.
> Isn't it the water tower with a hight of about 30 or more feet that
produces
> the 
> pressure at your water tap ?
> Maybe you think of it again, because your pump makes the pressure !
> 
> Elvis & 6548 - without a mysterious pressure rising fuel line...
> 
> 
> > You didn't by chance replace the small diameter line from accumulator
> > to filter with something larger? That small diameter line is what
> > creates high fuel pressure, not the pump itself (is not 75 PSI from
> > the tank). Kind of like putting your finger over end of a garden hose.
> .....
> 
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