PWM injector driver/Mechanical system

[The Punisher]

Yeah I believeit does that too.(Also a high speed bypass too i think and 
sometimes a vapor seperator ect..) I was just trying to break the process 
down to the most basic level. using this as an example why its a good idea 
to reference the injector pulses to the engine speed.


>I believe that the way the Hilborn works is that at low throttle most of 
>the
>fuel is bypassed back to the fuel tank.  As the throttle opens, the barrel
>valve regulates and the fuel goes to the injectors instead of back to the
>tank.
>
>
>----- Original Message -----
>From: "Brian Michalk" <michalk at awpi.com>
>To: <diy_efi at diy-efi.org>
>Sent: Sunday, April 08, 2001 11:20 AM
>Subject: RE: PWM injector driver/Mechanical system
>
>
> > > >So my question is: do I really need a crank signal to synchronize
> > > >TDC with my injector firing?
> > > >
> > > >  Brian Michalk  <http://www.awpi.com/michalk>
> > > Tare you designing youre own system?
> >
> > Perhaps.  I haven't yet made up my mind.
> > The concept is simple.  The devil is in the details.  If I can buy a
>module
> > ready made that takes TP, MAF, and RPM (no lambda, no crank synchro), 
>and
>I
> > can get inside of it to fiddle, that's where I would probably go.
> >
> > > If you want to know what it takes for a VERY simple system to work, 
>just
> > > look at how a hilborn(or similar) race mechanical system works. The 
>pump
> > > increases flow proportional to RPM. And you have a barrel valve
> > > attached to
> > > the throttle blades. The pump is assumed to deliver a given
> > > volume of fuel
> > > per revolution. As RPM increase the flow increases at the same rate. 
>For
> >
> > I have a shaft driven positive displacement mechanical pump capable of
>much
> > more volume than I require.  I assume the Hilborn has a pump capacity 
>that
> > matches the desired fuel delivery rate.  Putting a regulator on such a
>pump
> > would throw the more rpm=more flow out the door, right?
> >
> >
> > 
>--------------------------------------------------------------------------
>--
> > To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
>quotes)
> > in the body of a message (not the subject) to 
>majordomo at lists.diy-efi.org
> >
>
>----------------------------------------------------------------------------
>To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the 
>quotes)
>in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org