internal tank pump
internal tank pump
(OP)
Dear all,I have two questions:
1.Can an internal roller cell pump be used with methanol or other alcohol fuels? Or it would "eat" internals?
2.How much max fuel pressure stock efi injector can hold closed, without leakage or failure?
Regards
Andrius
1.Can an internal roller cell pump be used with methanol or other alcohol fuels? Or it would "eat" internals?
2.How much max fuel pressure stock efi injector can hold closed, without leakage or failure?
Regards
Andrius





RE: internal tank pump
Also suspect that alcohol based fuels may cause other problems with fuel system components that show up in the pumps and injectors but didn't originate there so you should have that information readily available too!
Chumley
RE: internal tank pump
Alcohols are corrosive to many metals.
Alcohols react differently to gasoline re gasket materials, an what works with one, might not work with the other and vice versa.
The pump and component manufactures should be able to specify what fuels are compatible with their products. This includes pumps, tanks, valves, lines, filters, regulators, sensors, fittings, nozzles and injectors (have I forgotten something).
Regards
pat
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: internal tank pump
That being said, try to find a flex fuel vehicle to increase your chances of getting parts that are alcohol compatible.
RE: internal tank pump
RE: internal tank pump
Another area which suffers is the pump motor brushes - these usually suffer from accelerated wear when run in fuels which have high alcohol loads.
I just used Bosch as the example, same true of Pierburg, VDO, etc.
Ford did a significant amount of work on their current 'gasoline' pumps in order to make them live in gasolhols. These are turbines rather than roller cells, but the same comments apply - carbon steels replced by stainless or nickel or chrome steels and brushes revised to improve degraded life.
RE: internal tank pump
http://home.earthlink.net/~mgmcqueary/89j40_3.htm
Replace 3.htm in the above link with 2.htm then hit the back link for more information.
Chumley
RE: internal tank pump
All actualy I was interested can those pumps work with alcohol fuel.Thanks for info everybody.
RE: internal tank pump
Well then, maybe since you don't think asking the manufacturer of the pump is a good idea and since the manufacturer pretty much says that the pumps are non repairable, which you disagree:
Could you clue us in to exactly "how" you repaired the pumps or document one example? Or is your second post going to remain just as generic as your first?
We would love to learn from you too!
Chumley
RE: internal tank pump
RE: internal tank pump
"Can an internal roller cell pump be used with methanol or other alcohol fuels? Or it would "eat" internals?"
Yes, they can. Out of the box, they all work perfectly, but all fuels (or lack of) eventually eat the internals.
Now if you will suggest:
The % concentration and specific type of alcohol fuel you have in mind as well as any other additives (a fuel specification would work wonders here)
The specific use
The specific flow rate
The specific operating pressure
And clearly define the other specific fuel system components
Some of us dummies might be able to get back to you and tell you HOW LONG a roller cell pump might last!
How long could range from a few seconds to a few decades
depending on what you say!
Chumley