PWM fuel pump control.

This section is dedicated to discussion of DTA engine control units such as the DTA E48 EXP, P8 Pro, DTA S40, S60, S80, and S100, as well as all things ECU related.
gnutz2
Posts: 190
Joined: Tue Jul 03, 2012 2:33 am
ECU Model: S100 Pro

Re: PWM fuel pump control.

Post by gnutz2 »

Oh yeah, forgot to say that all 10 injectors are fitted to the car, so when the nitrous is turned on nearly all the extra fuel comes from the 5 x 630cc injectors.
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

Re: PWM fuel pump control.

Post by welshpug »

thats a lot of fuel! what is it? probably need to look at American drag stuff, or bugatti pumps and the like
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: PWM fuel pump control.

Post by stevieturbo »

You wouldnt need another 450 to fill. Dont forget that pump is running no pressure so will flow a lot more.
Plus as you're returning fuel back into the swirl tank, the lift pump only need to flow enough fuel for the power the engine is making at the time.

Only when you exceed that will the swirl tank start to empty...but with enough capacity unless it sees extended periods at high power/WOT, then chances of it ever being a problem is very slim unless lots of standing miles or similar.

So most of the time there will always be excess flow into the swirl tank.

But yea the pair of 340's etc looks all good and neat you could fit it all in tank like that.
gnutz2
Posts: 190
Joined: Tue Jul 03, 2012 2:33 am
ECU Model: S100 Pro

Re: PWM fuel pump control.

Post by gnutz2 »

Agreed.

Looking at this chart, the 340 would be a good lift pump if you used the walbro 450, it can match the full pressure flow of the walbro while being at low pressure itself.

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