300 PSI boost-referenced fuel pressure regulator?

Begle1

Begle1

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Is there such a thing as a boost referenced pressure regulator that could output fuel pressures as high as 300 PSI?

Something that I could set to 120 PSI and then boost reference up at around a 4-1 ratio?



Or something electronically controlled for the purpose even? All I'm trying to do is dynamically control the output pressure of the big belt-driven fuel pump that I'm going to T into my injection pump.

Currently the only affordable way of doing it I've thought of is to have several non-dynamic pressure regulators, each with it's own solenoid attached to it, so I can select one from several different regulators.
 
I have to get a boost referenced FP regulator for when I put a turbo on my bike. I am going with an aeromotive A1000 which is only good to 70psi... what are you running 300psi of fuel to?
 
I'm planning on using a belt-driven gear-to-gear semi transfer pump off an ISX designed to supply ~250 PSI of fuel to mechanical cam-actuated unit injectors to supply ~250 PSI of fuel to the case of a VE injection pump through the shut-down solenoid hole in order to bypass the VE's notoriously under-sized internal vane-style transfer pump and its inherent flow restrictions.
 
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Why don't you just p-pump it?*bdh**bdh*

Just kidding, I had to after reading the thread of the guy whining about ppl telling him to put a cummins in his Ford.:hehe:

Good luck with that setup, sounds badash if you can get it to work how you want. You may have to go to a pump specialty shop for that kind of regulator.
 
zstroken said:
He is looking for more than the 1:1 though. You could get a multiplier, but it would be a pain and probably expensive.
Click to expand...

I guess I missed that part.... don't know if I have seen any off the shelf stuff that will do that.
 
I figured I was dreaming with the 4:1 reference rate, I could probably live with a 1:1 reference rate as long as the regulator wouldn't blow itself apart at 300 PSI.

I would really like to electronically control it some how, and with what's available off the shelf it seems to be 100 times less expensive to electronically regulate air pressure than it is to electronically regulate fuel pressure. It'd be cheaper to regulate a little air compressor supply to the fuel pressure regulator than to regulate the fuel pressure directly...

But I'm over-budget on this project already and it seems like a charlie foxtrot of solenoid valves and static pressure regulators in series is going to be the best thing for the price.
 
Use a hydraulic pressure regulator...get the lowest pressure available, then take it apart and put a lighter spring in it.
 
You might look into an intermediate LPG regulator... should be "relatively" easy to source for IC apps and you can reference the diaphragm to anything from MAP down to barometric.
 
Got a good source for this?

I also question the VE's ability to deal with that kind of pressure.
We're talkin about a cast housing aren't we?

Also, aren't you wildly advancing fuel injection by raising the inlet pressure that high? Cool idea, just throwing that out there....
 
The stock vane pump with a bumped up regulator will make 300+ PSI, until you start flowing fuel to big injectors at RPM or with a 14mm pumping element, then the stock pump can't keep up. Timing advance maximum has a very definite maximum limit; it should be fully maxed by the stock pressure regulator of 120 PSI... Which under WOT conditions can be unattainable no matter how big of a lift pump you have going into the VE's internal vane pump.

I hear rumors about cases splitting at 375-400... I'll have the means to test that soon.
 
I've had the thot of doing this to a ve pump. But didn't have the time or brains to figger it out.
Keep us updated on what you make happen!
 
Dont your pumps have extra holes in the case that you could rig the feed to and still use the shut off solenoid? I came from VW diesel cround and our pumps have built in extra holes that would be ideal for extra feed ports.
 
I've said it before and I'll say it again. If you want a cheap, simple to build at home electronic controls look no further than the arduino. $27 for a 16MHz computer that is easy to program and analog/digital/pwm inputs outputs. Should be good for any beagle1 project, nitrous controller, variable turbo stand alone,...

I made a voltmeter with two digit seven segment display output in a few hours It wasn't hard and that's 15 outputs based on an input. The wired programming language is easy to learn.
 
I'm familiar with microcontrollers and assembly language. The problem is that I can't find an acceptable electronically-controlled pressure regulator that I could control using an Arduino, LabView or a microcontroller.

I could PWM a solenoid, but I don't like the longevity or failure modes of that solution. Or I could put my own stepper motor onto a mechanically adjustable pressure regulator, which it seems like I'll end up doing one day.

But the pump's output should already be RPM based, really I should be able to get away with just a given sized orifice and a pressure regulator... That is how the stock pump does it, after all. I figure I'll do that just to get it operational, and then worry about finer control later.
 
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