FW 190 External (Drop-) Tank Electrical Pump EP-1 E

[Shortways]

The FW 190 could carry a 300 Ltr. drop tank, that was pressurized by supercharger bleed air. Fuel was transferred from the drop tank to the (292 Ltr.) Rear Main Tank, when the quantity of that tank was below 240 Ltr. Otherwise it was inhibited by a float valve. An electrical pump was built into the ETC 501 carrier rack. This pump was called EP-1 E and was meant to keep the pressure up, when flying at low manifold pressure and the supercharger was delivering at or below ambient pressure. The main tanks were not pressurized, but the drop tank was and so fuel transfer took place eventhough the EP-1 E was not running. As long as the supercharger bleed air was above ambient. Of course this bleed air connection had a check valve and a pressure relief valve.

I am interested in data about the EP-1E.

I cannot find anything about it. Not even a single actual photo.
I would like to know it's output pressure and capacity.

 

[Snautzer01]

E Engineman perhaps you know something?

 

[Engineman]

E Engineman perhaps you know something?

I don't seem to have any doc's about the Deutsche Benzinuhren A.G., Berlin DBU EP-1 Elektropumpe, often referred to as the EP-1E and used on the Fw 190 ETC 501 carrier to help pump the drop-tank fuel in addition to the pressure air.
I think it might possibly have the part code 8-4536 but I am not certain. Only lead on performance is that it seems to have had a lower power rating than the usual immersed fuel pumps.

Eng

 

[Shortways]

I don't seem to have any doc's about the Deutsche Benzinuhren A.G., Berlin DBU EP-1 Elektropumpe, often referred to as the EP-1E and used on the Fw 190 ETC 501 carrier to help pump the drop-tank fuel in addition to the pressure air.
I think it might possibly have the part code 8-4536 but I am not certain. Only lead on performance is that it seems to have had a lower power rating than the usual immersed fuel pumps.

Eng

Thanks for the reply Snautzer01 and Engineman. This little pump appears to be quite the little mystery machine. Wondering who would have any information about this??? The Deutsches Museum?

 

[Engineman]

Thanks for the reply Snautzer01 and Engineman. This little pump appears to be quite the little mystery machine. Wondering who would have any information about this??? The Deutsches Museum?

There are some DBU documents and booklets in the Udo Hafner Archiv [email protected] in the Vergasser und Einspritzanlagen section, but I do not have the CD (although I probably should buy it). However, I don't think it covers this EP-1 E from the titles but I could be wrong.
Overall, this falls into the general difficulty of finding documents from the smaller equipment manufacturers and also production manuals from almost all companies. Interestingly, the very highly produced fuel pumps for the DB engines (Erich U. Graetz) have very little information, apart from the simple overhaul in the DB manuals. Probably, some of this documentation does exist somewhere, but if it will be found, I cannot guess.

Eng

 

[Shortways]

There are some DBU documents and booklets in the Udo Hafner Archiv [email protected] in the Vergasser und Einspritzanlagen section, but I do not have the CD (although I probably should buy it). However, I don't think it covers this EP-1 E from the titles but I could be wrong.
Overall, this falls into the general difficulty of finding documents from the smaller equipment manufacturers and also production manuals from almost all companies. Interestingly, the very highly produced fuel pumps for the DB engines (Erich U. Graetz) have very little information, apart from the simple overhaul in the DB manuals. Probably, some of this documentation does exist somewhere, but if it will be found, I cannot guess.

Eng

Ah yes. I know Udo a little bit.
I will drop him a line and ask him.

Thanks

 

[Wurger]

S Shortways

Sorry I'm bothering ... but you don't need to send two separate posts .. one with the quotation and the second one with the your answer. If you click the Replay button the quotation of the post you want to answer is attached at the top of your new post. The cursor is moved a line down and the soft waits for typing your text. When you do it, hit the Post replay button just then. In the case your post will be one writing sent. Also if you want to replay to a post and there is nobody more who sent anything so far you may just type your post without the quotation. However if you would like to draw somebody's attention you may use the @ sign with the guy's nick pasted next to like I did here with your. Following the ways would be appreciated by the Mod team.

 

[Shortways]

Hi Wurger ,
Yes sorry, that was accidental.
I'll do my best to prevent it next time.
Greets

 

[Wurger]

Great ! THX.

 

[woodhaven]

The EP-1 pump looked similar to the UP-1 pump.

 

[Engineman]

Yes. I think the UP1 was earlier, but hard to find more detail. Which cockpit is in the photo's please?

Eng

 

[Shortways]

The EP-1 pump looked similar to the UP-1 pump.

Kind of does indeed Woodhaven.
Thanks for the reply.
I think I will check with the Deutsches Museum if they have anything. I bought a document from them before. Thanks

 

[woodhaven]

Messerschmitt Me 209 V1

 

[Engineman]

Messerschmitt Me 209 V1

Brilliant!

Eng