Interesting MotoGP vs. F1 fuel pressure FYI - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 7 (permalink) Old 03-23-2014, 08:03 PM Thread Starter
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Interesting MotoGP vs. F1 fuel pressure FYI

Was reading an article by Kevin Cameron concerning GDI for street motorcycles and he mentioned the current fuel pressure ratings for MotoGP and F1.

The current fuel pressure used on MotoGP bikes is 10 bar (147 PSI) while F1 fuel pressure is currently 500 bar (7350 PSI).

And here we thought the 50 PSI used on the RC51 was high.
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post #2 of 7 (permalink) Old 03-23-2014, 10:23 PM
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Some of the newer cars that are using the direct injection technology have fuel rails rated for 5,000 psi. Yes, that is some scary stuff for sure.



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post #3 of 7 (permalink) Old 03-23-2014, 10:28 PM
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Yes, add DI, and rpm.... then turbos too... FP's get very high.
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post #4 of 7 (permalink) Old 03-24-2014, 10:25 PM Thread Starter
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We had air pressure up to 3000 and 4500 PSI, and hydraulic pressure at 3000 PSI.
And at those pressures, things get very dangerous.

An air leak at those pressures can slice a finger right off.
And a hydraulic leak at that pressure turns into a fog that can potentially turn fatal if breathed, or get blasted through the skin into the bloodstream.

Those old injection guns they quit using years ago used 1500 PSI which is much less than these systems.
Hurt like hell too, and if you flinched, would slice you like a scalpel.

I can't imagine how dangerous a fuel system leak at over 7000 PSI would be.
I can only hope the volume is low so the pressure bleeds down quick.

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post #5 of 7 (permalink) Old 03-24-2014, 10:29 PM
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Quote:
Originally Posted by SubSailor View Post
We had air pressure up to 3000 and 4500 PSI, and hydraulic pressure at 3000 PSI.
And at those pressures, things get very dangerous.

An air leak at those pressures can slice a finger right off.
And a hydraulic leak at that pressure turns into a fog that can potentially turn fatal if breathed, or get blasted through the skin into the bloodstream.

Those old injection guns they quit using years ago used 1500 PSI which is much less than these systems.
Hurt like hell too, and if you flinched, would slice you like a scalpel.
I know I don't want to be around an engine with fuel pressurized that high either....all in an effort to atomize the fuel more efficiently.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #6 of 7 (permalink) Old 03-24-2014, 11:48 PM
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That's crazy.

Before to long they are going to be up in the flow jet psi range

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post #7 of 7 (permalink) Old 03-25-2014, 12:15 AM
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Quote:
Originally Posted by SubSailor View Post
We had air pressure up to 3000 and 4500 PSI, and hydraulic pressure at 3000 PSI.
And at those pressures, things get very dangerous.

An air leak at those pressures can slice a finger right off.
And a hydraulic leak at that pressure turns into a fog that can potentially turn fatal if breathed, or get blasted through the skin into the bloodstream.

Those old injection guns they quit using years ago used 1500 PSI which is much less than these systems.
Hurt like hell too, and if you flinched, would slice you like a scalpel.

I can't imagine how dangerous a fuel system leak at over 7000 PSI would be.
I can only hope the volume is low so the pressure bleeds down quick.
That's what happened to my dad's uncle from 'just' a tractor's hydraulic leak. It was a laser beam stream of hydraulic fluid. He didn't see it and stuck his hand in front of it. In a split second it filled the end of his middle finger with oil. Rushed to the hospital where they began examining him and running tests etc, and the doctor told him all these crazy things they could do to try to combat the impending health problems from the oil spreading throughout his blood stream ... or they could just remove the fingertip. Being in his late 60's he went with fingertip removal. Much simpler, and now he has another good story to tell. He was never a hand model anyway. But now shooting somebody a bird is less satisfying.
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