PWM injector driver/Mechanical system

[Greg Hermann]

At 11:20 AM 4/8/01, Brian Michalk wrote:
>> >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?

You don't want a regulator that bypasses internally in the pump--but you
can use the same approach that Hilborn does--bypass some back to the tank.
You probably ought to check out Kinsler. I think it's www.kinsler.com.

Greg


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