Superpump fuel system
Superpump fuel system
-The engine is going into a vehicle that already has a fuel pump in the tank capable of pumping diesel, and pumps at 4 bar, and the lift pump on the injection pump has already been removed
-I plan to use 10-12mm fuel lines for high flow
-I was originally looking into using the OM603 fuel filter, but have been told it does not allow enough flow for a superpump. Is there a specific high flow fuel filter recommended?
-For the FPR, is there a specific one recommended to achieve the progressive fuel pressure recommended by dieselmeken (1 bar at idle, and 3 bar at max boost)?
-I have added a one-way check valve into the return line from the injectors, so the back pressure on the injectors is not high. Is this needed?
Thanks!
I have seen a few different fuel system diagrams for superpumps here on superturbodiesel, although would appreciate any comments on my attached diagram and plan!
-The engine is going into a vehicle that already has a fuel pump in the tank capable of pumping diesel, and pumps at 4 bar, and the lift pump on the injection pump has already been removed
-I plan to use 10-12mm fuel lines for high flow
-I was originally looking into using the OM603 fuel filter, but have been told it does not allow enough flow for a superpump. Is there a specific high flow fuel filter recommended?
-For the FPR, is there a specific one recommended to achieve the progressive fuel pressure recommended by dieselmeken (1 bar at idle, and 3 bar at max boost)?
-I have added a one-way check valve into the return line from the injectors, so the back pressure on the injectors is not high. Is this needed?
Thanks!
This diagram is ok. I use stock om603 filter and housing with stock fuel lines and dynoed 640hp with smoke but I have different scheme for pump and fpr. Old dieselmeken pumps needed progressive 3bar but now with improved elements they need just constant 1-1,5bar.
(04-20-2017, 06:13 PM)AlanMcR I'm not sure the check valve does what you want. The pressure on the injector return side will simply build up until it exceeds the tank return line pressure and opens the check valve.
Agreed, delete the check valve.
Baldur Gislason
I was thinking that the pressure of the fuel coming from the FPR back to the tank could instead go "backwards" up the return line to the injectors and cause problems, so came up with the check valve.
I did not consider that a one-way check valve, however, would only let fuel through if the pressure from the injector return line exceeds the pressure of the fuel returning to the tank from the FPR.
I have removed it from the diagram!
Ah, ok!
I was thinking that the pressure of the fuel coming from the FPR back to the tank could instead go "backwards" up the return line to the injectors and cause problems, so came up with the check valve.
I did not consider that a one-way check valve, however, would only let fuel through if the pressure from the injector return line exceeds the pressure of the fuel returning to the tank from the FPR.
I have removed it from the diagram!
I have been thinking about it, probably a "race fitting" would work? Just straight on ? you know, these anodised blue and red thingies..
Evgeniy1987
04-21-2017, 01:49 AM #6Have you thought about connection of the supply line to the injection pump? Because the usual way is to do it with a banjo, but seems strange to me if you first have 10 - 12mm lines, and then a banjo with 3mm holes in it..
I have been thinking about it, probably a "race fitting" would work? Just straight on ? you know, these anodised blue and red thingies..
Very similar to you, but very much more compact compared to an external FPR, thoughts?
![[Image: Banjo.jpg]](http://s1250.photobucket.com/user/Mercedes_Power/media/Banjo.jpg.html)
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
I have a 1.5 bar release pressure banjo which I will be using as the fuel pressure regulating device for the gallery. It will be fed by a Bosch 044 I just purchased.
Very similar to you, but very much more compact compared to an external FPR, thoughts?
Installed:
OM606/722.6, big IC, W220 brakes.
Planned:
DIY manifold, compound, 722.6 controller, built IP.
[i]Less rust.. [/i]
(04-21-2017, 03:27 PM)Hario\ I have a 1.5 bar release pressure banjo which I will be using as the fuel pressure regulating device for the gallery. It will be fed by a Bosch 044 I just purchased.
Very similar to you, but very much more compact compared to an external FPR, thoughts?
This regulator banjo will not flow enough and my guess is that you have something like 3-4bar pressure in element gallery then. You need external fpr with 044. Put temporary pressure gauge with T-connection before pump and check pressure to be sure.
(04-21-2017, 03:27 PM)Hario\ I have a 1.5 bar release pressure banjo which I will be using as the fuel pressure regulating device for the gallery. It will be fed by a Bosch 044 I just purchased.
Very similar to you, but very much more compact compared to an external FPR, thoughts?
This regulator banjo will not flow enough and my guess is that you have something like 3-4bar pressure in element gallery then. You need external fpr with 044. Put temporary pressure gauge with T-connection before pump and check pressure to be sure.
![[Image: iwYLYIZ.jpg]](http://i.imgur.com/iwYLYIZ.jpg)
AlpinaM30B35
04-22-2017, 05:58 PM #9Here is the setup i came up with, the stock bracket that comes with the aeromotive FPR works perfectly
AlpinaM30B35
04-22-2017, 06:01 PM #10Here is the setup i came up with, the stock bracket that comes with the aeromotive FPR works perfectly
(04-21-2017, 01:49 AM)Evgeniy1987 Have you thought about connection of the supply line to the injection pump? Because the usual way is to do it with a banjo, but seems strange to me if you first have 10 - 12mm lines, and then a banjo with 3mm holes in it..
I have been thinking about it, probably a "race fitting" would work? Just straight on ? you know, these anodised blue and red thingies..
Yes, I think that will be the best way to do it. Because I am in the U.S., I think I am going to get some metric to AN straight through fittings, and use all AN lines. The fittings seem pretty easy to find.
(04-21-2017, 01:49 AM)Evgeniy1987 Have you thought about connection of the supply line to the injection pump? Because the usual way is to do it with a banjo, but seems strange to me if you first have 10 - 12mm lines, and then a banjo with 3mm holes in it..
I have been thinking about it, probably a "race fitting" would work? Just straight on ? you know, these anodised blue and red thingies..
Yes, I think that will be the best way to do it. Because I am in the U.S., I think I am going to get some metric to AN straight through fittings, and use all AN lines. The fittings seem pretty easy to find.
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