Regulated Fuel Return? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 36 Old 02-09-2012, 04:48 AM Thread Starter
Powerstroke.org Fanatic
 
ptsk06tank's Avatar
 
Join Date: Oct 2010
Location: Winston-Salem
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Regulated Fuel Return?

I have got a question on RR.

OK if a Aeromotive A1000 puts out a constant pressure rating of 80psi at a flow rating of 500 lbs/hr. pre injector. Then you have a RR set at 65psi post injector. Wouldn't the injectors be supplied with 80psi?

If so, why use a RR system? Or would it be best to install a pressure regulator pre injector to regulate the pressure to 65psi. or desired fuel pressure rating?

I'm not trying to stir up anything. Just curious.


Cory




'06, w/ Modded 62mm 03' turbo , 4in DP w/ 5in MBRP Exhaust, 58V FICM by Vivan @ Q.T., Sinister Delete, SCT Livewire (SRL tune from Matt @ G.H.), CTS Insight, Firestone Rear Air Bags
ptsk06tank is offline  
post #2 of 36 Old 02-09-2012, 05:43 AM
Compression Ignition Addict
 
Fox Hunt's Avatar
 
Join Date: Oct 2006
Location: Humboldt, California
Posts: 2,409
Thanks: 149
Thanked 18 Times in 17 Posts
Mentioned: 1 Post(s)
Quoted: 22 Post(s)
Feedback Score: 1 reviews
I have wondered this exact same thing. I hope someone chimes in.

2006 F-350 CCSB Lariat
MBRP 4" Exhaust, ARPs, Barder Stage 2 turbo, S&B CAI, TSD SPD, Warren Competition transmission, Edge CTS, Coolant Filter, High Idle Mod, CCV Mod, Zoodad, Newton Leveling kit, Fuel Mavericks 20x9 , Pioneer DVD head-unit, JL Stealthbox and JL Slash 500/1v2 amp
Future Mods:
Injectors and Driven Diesel RR
-Alex
Fox Hunt is offline  
post #3 of 36 Old 02-09-2012, 06:46 AM
Compression Ignition Addict
 
pizza pig's Avatar
 
Join Date: Apr 2010
Posts: 2,044
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
If you set the regulator at 65 psi the pump works to maintain that pressure, at 65 psi the a1000 is hardly any strain. The pumps max flow rating doesn't mean thats what its putting through the fuel rails/injectors the regulator decides that.

The idea of a regulated return is to supply fuel to the injectors and whatever fuel not use is sent back to the tank AFTER the injectors not before like the stock system or airdogs/fass. This provides the injectors with constant and equal fuel pressure in both rails and injectors.
pizza pig is offline  
post #4 of 36 Old 02-09-2012, 07:01 AM
Compression Ignition Addict
 
Fox Hunt's Avatar
 
Join Date: Oct 2006
Location: Humboldt, California
Posts: 2,409
Thanks: 149
Thanked 18 Times in 17 Posts
Mentioned: 1 Post(s)
Quoted: 22 Post(s)
Feedback Score: 1 reviews
Thats kinda what I thought, I'd never actually heard someone explain it though. trying not to get off topic, but does an injector getting 65psi work better/ make more power than one running at 50psi?
Sent from my HTC Hero S

2006 F-350 CCSB Lariat
MBRP 4" Exhaust, ARPs, Barder Stage 2 turbo, S&B CAI, TSD SPD, Warren Competition transmission, Edge CTS, Coolant Filter, High Idle Mod, CCV Mod, Zoodad, Newton Leveling kit, Fuel Mavericks 20x9 , Pioneer DVD head-unit, JL Stealthbox and JL Slash 500/1v2 amp
Future Mods:
Injectors and Driven Diesel RR
-Alex
Fox Hunt is offline  
post #5 of 36 Old 02-09-2012, 07:12 AM Thread Starter
Powerstroke.org Fanatic
 
ptsk06tank's Avatar
 
Join Date: Oct 2010
Location: Winston-Salem
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by pizza pig View Post
If you set the regulator at 65 psi the pump works to maintain that pressure, at 65 psi the a1000 is hardly any strain. The pumps max flow rating doesn't mean thats what its putting through the fuel rails/injectors the regulator decides that.

The idea of a regulated return is to supply fuel to the injectors and whatever fuel not use is sent back to the tank AFTER the injectors not before like the stock system or airdogs/fass. This provides the injectors with constant and equal fuel pressure in both rails and injectors.
OK that clears up things for me.

Also I'm assuming that a RR system will eliminate the "dead head" effect? Because having the back of the heads blocked off would put more strain on the fuel pump?


Cory




'06, w/ Modded 62mm 03' turbo , 4in DP w/ 5in MBRP Exhaust, 58V FICM by Vivan @ Q.T., Sinister Delete, SCT Livewire (SRL tune from Matt @ G.H.), CTS Insight, Firestone Rear Air Bags
ptsk06tank is offline  
post #6 of 36 Old 02-09-2012, 07:16 AM
Compression Ignition Addict
 
jimmyv13's Avatar
 
Join Date: Jul 2007
Location: West Bloomfield, MI
Posts: 1,774
Thanks: 4
Thanked 7 Times in 7 Posts
Mentioned: 1 Post(s)
Quoted: 29 Post(s)
Feedback Score: 3 reviews
Send a message via AIM to jimmyv13 Send a message via Yahoo to jimmyv13
Is an RFR system better than the Air Dog II or are they not really comparable?


2005 F250 CCSB Lariat FX4

4" MBRP Turbo Back*Sinister Coolant Filter*SRL+*'10 Tailgate*Dicad EGR delete*Premium EdFICM*Powerslot Rotors*Hawk Pads*Riffraff boots*DIY CCV*ARP's*'10 Tails*N-FAB Steps*'12 Rear Bumper*Dashboss*Pioneer DVD*'08 Trans Pan
*Bullitt y-pipe*'14 PE PF Mirrors*Fox 2.0 IFP*'08 Diff Cover
jimmyv13 is offline  
post #7 of 36 Old 02-09-2012, 07:20 AM
N.S.D.Q.


 
HeavyAssault's Avatar
 
Join Date: Oct 2007
Location: Middle VA
Posts: 4,850
Thanks: 26
Thanked 91 Times in 80 Posts
Mentioned: 0 Post(s)
Quoted: 60 Post(s)
Feedback Score: 3 reviews
How about this. The RR maintains pressure up to 65psi THEN opens to allow fuel above 65 to by-pass to the return. So when under demand the RR would remain shut since the 80PSI would be feeding the injectors. One can assume the PSI at the RR will be lower than 65PSI so no fuel would be returned. (Kind of sounds like a dead head)
Once the fuel demand has dropped the RR should see a higher PSI (let's say it sees 80PSI). The RR opens to allow fuel pressurized over 65psi to return. This protects the potential of o-ring failure.

If you consider the OEM set up it does the same thing but the RR opens prior to feeding the injectors which should prevent the o-ring issue as well. As long as the OEM pump is providing adequate pressure it does the SAME thing as any RR setup.

I don't recall seeing where anyone has posted PSI output of the HFCM.


Officially The Biggest Midget In The Game
(In support of Zmann's request)

HeavyAssault is offline  
post #8 of 36 Old 02-09-2012, 07:22 AM
Compression Ignition Addict
 
pizza pig's Avatar
 
Join Date: Apr 2010
Posts: 2,044
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
theyre not really comparable in my opinion

A regulated return is only good if your fuel pump is good!
pizza pig is offline  
post #9 of 36 Old 02-09-2012, 07:22 AM
N.S.D.Q.


 
HeavyAssault's Avatar
 
Join Date: Oct 2007
Location: Middle VA
Posts: 4,850
Thanks: 26
Thanked 91 Times in 80 Posts
Mentioned: 0 Post(s)
Quoted: 60 Post(s)
Feedback Score: 3 reviews
Quote:
Originally Posted by jimmyv13 View Post
Is an RFR system better than the Air Dog II or are they not really comparable?
RFR: does not filter or remove air. Just provides steady PSI

ADII: Filters fuel, removes air, provides steady PSI.


Officially The Biggest Midget In The Game
(In support of Zmann's request)

HeavyAssault is offline  
post #10 of 36 Old 02-09-2012, 09:28 AM
Compression Ignition Addict
 
jimmyv13's Avatar
 
Join Date: Jul 2007
Location: West Bloomfield, MI
Posts: 1,774
Thanks: 4
Thanked 7 Times in 7 Posts
Mentioned: 1 Post(s)
Quoted: 29 Post(s)
Feedback Score: 3 reviews
Send a message via AIM to jimmyv13 Send a message via Yahoo to jimmyv13
Quote:
Originally Posted by HeavyAssault View Post
RFR: does not filter or remove air. Just provides steady PSI

ADII: Filters fuel, removes air, provides steady PSI.
Thank you!

It seems that the RFR system would be a little cheaper, but the ADII makes more sense and a wiser investment. The RFR is simply masking the real problem which is the pump.


2005 F250 CCSB Lariat FX4

4" MBRP Turbo Back*Sinister Coolant Filter*SRL+*'10 Tailgate*Dicad EGR delete*Premium EdFICM*Powerslot Rotors*Hawk Pads*Riffraff boots*DIY CCV*ARP's*'10 Tails*N-FAB Steps*'12 Rear Bumper*Dashboss*Pioneer DVD*'08 Trans Pan
*Bullitt y-pipe*'14 PE PF Mirrors*Fox 2.0 IFP*'08 Diff Cover
jimmyv13 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome