[Diy_efi] Fuel rail sizing

[Dave Dahlgren]

Yes Motec does it every day..
Dave

huw scourfield wrote:
> 
> So can you run sequentially over the entire rpm/load range of "this" engine?
> Huw
> ----- Original Message -----
> From: "Dave Dahlgren" <ddahlgren at snet.net>
> To: <diy_efi at diy-efi.org>
> Sent: Wednesday, September 04, 2002 7:51 PM
> Subject: Re: [Diy_efi] Fuel rail sizing
> 
> > I was alluding to the instantaneous flow at the injector opening being
> different
> > on the different injectors due to the pressure difference. When you open
> them
> > all at once the pressure difference between injectors is not the same as
> opening
> > them up one at a time in sequential. If you have a delta in pressure you
> have to
> > have a delta in flow. If you only open one injector the delta in pressure
> is
> > less than if you open them all at once. You have two different types of
> demand,
> > average and instantaneous you have to size the rail for the larger of the
> two.
> > The average flow is down with sequential as you would only have at most 5
> of the
> > six injectors firing and the peak would be down as well because you are
> only
> > turning on or off one injector at a time. So sorry to say you can run a
> smaller
> > fuel rail with sequential injection, it is less demanding on the entire
> fuel
> > delivery system.
> > Dave Dahlgren
> >


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi