Crazy idea?

Clive Apps Techno-Logicals 416 510 0020 clive at problem.tantech.com
Sun Mar 22 18:39:14 GMT 1998


> 
> Frederic Breitwieser <frederic.breitwieser at xephic.dynip.com> wrote:
> > That means every time the intake valve opens, you have six pulses worth of
> > fuel resting on the valve, which I will call X milliliters.
> 
> [ If the Ford is like GM, there will will two (and sometimes only one)
> pulses worth of fuel waiting in the intake. ]
> 
> > In order to achieve the "X" you'd have to drastically increase the
> > pulsewidth, increase the fuel pressure on the rail, run larger injectors,
> > or a combination of all three.  This gets a little complex for me, but you
> > need to achieve the volumetric equivilent of the six injector pulses "X"
> > with your one firing of the injector.
> 
> > Batch:
> >   * Can use smaller injectors (acceptable injection time is 100% of the
> > crank rev time)
> 
> > Sequential:
> >   * Have to use bigger injectors (Tinj < 25% of Trev)
> 
> There should be no need to change injectors to go sequential. 
> "Sequential" doesn't mean one-at-a-time.  It simply means that each
> injector's on and off times are synced to the corresponding intake
> valve.  Just think of several batch fire systems all running slightly
> skewed from each other.  At WOT, all the injectors could be on
> simultaneously - with a short off interval sequencing around the
> injectors.

on some of the Hipo Frod systems guys are using the injectors in SFI at WOT
are on close to 100% of the time anyways
80% on time at WOT under full load seems to be about optimal

Clive 
> 




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