REFLECTOR: Running LOP

[Brian Michalk]

I can share at this time that it coughs and sputters on the backup system.
My last circuit board version did not communicate on the network, so I 
could not get any flow information on tuning the flow feedback loop. It 
seemed to go way rich, then way lean.

It's a simple barrel valve like an injector flow valve seen on a sprint 
car. I bought one of those thinking it would work for me, but I ended up 
machining one with lower flow rates. It is turned by a stepper motor. 
The sensors are MAP, fuel flow and RPM.

The advantage to the stepper motor is that it doesn't require power when 
it's not turning, and the response is much quicker than a needle valve. 
The valve feeds a manifold, driving mist nozzles, one per cylinder. I 
may have too many nozzles, and may remove all but two of them. If the 
engine makes *some* power; enough to keep me airborne, I will consider 
it a success.
Theres a 1.5AH battery for this system which is charged by the main system.

len.baxter at gm.com wrote:
>
> I would be very interested in your approach..... can you share 
> anything at this time??
>
>
> Len Baxter
> XL RG
> Cell 586-940-9224
>
> __________________
>
>
> I'm rolling my own EFI backup system. It's taken quite a while, but I
> think I'm almost there.
>
> len.baxter at gm.com wrote:
> >
> > When using a ECM like Autronic, what are you doing for redundancy??
> >
> >
> > Len Baxter
> > XL-RG
> >
> > __________________
> >
> >
> > For my fuel tables on the Autronic, I am going to have areas designated
> > for LOP ops. No mixture knob, the engine will automatically run in that
> > regime.
> >
> > Scott Derrick wrote:
> > > Steve,
> > >
> > > Because some of the engine monitor companies still live in the 
> 40's like
> > > Lycoming does..
> > >
> > > There isn't a fuel injected automobile made today that doesn't run LOP
> > > either all the time or automatically adjusts to it when it can.
> > >
> > > ROP operations are used on most Lycomings and Continental engines
> > > because the fuel distribution is so god awful you have to waste 10% to
> > > 30% of your fuel to get a semblance of smooth running. This came to be
> > > because it was easy(lazy) and gas was cheap in the 40's.
> > >
> > > 60 years later Continental is making their version of precision
> > > injectors(been on cars for 20 years) for some of their big bore 
> engines,
> > > Lycoming is still running in the "Up and Locked" position. I'm not 
> sure
> > > if either company has heard of tuned induction or tuned exhaust, 
> give um
> > > a couple more decades and they'll come around.
> > >
> > > Vision's VM1000C has a LOP lean-to-find function as do a couple 
> others.
> > > GRT told me they are in the process of adding it.
> > >
> > > Scott
> > >
> > > steve korney wrote:
> > >
> > >>
> > >> (Snip)...A LOP lean-to-find option is nice on an engine monitor but
> > >> most just
> > >> offer a ROP lean-to-find..
> > >>
> > >> Wonder why that is Scott...
> > >>
> > >> Best... Steve
> > >>
> > >> _________________________________________________________________
> > >> WIN up to $10,000 in cash or prizes – enter the Microsoft Office Live
> > >> Sweepstakes http://clk.atdmt.com/MRT/go/aub0050001581mrt/direct/01/
> > >>
> > 
> >>------------------------------------------------------------------------
> > >>
> > >>_______________________________________________
> > >>To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> > >>
> > >>Visit the gallery! www.tvbf.org/gallery
> > >>user:pw = tvbf:jamaicangoose
> > >>Check new archives: www.tvbf.org/pipermail
> > >>Check old archives: 
> http://www.tvbf.org/archives/velocity/maillist.html
> > >>
> > >
> > > --
> > >
> > > -
> > > The most effectual engines for [pacifying a nation] are the
> > public papers... [A despotic] government always [keeps] a kind of
> > standing army of newswriters who, without any regard to truth or to what
> > should be like truth, [invent] and put into the papers whatever might
> > serve the ministers.
> > >
> > > Thomas Jefferson to G. K. van Hogendorp
> > > Oct. 13, 1785. (*) ME 5:181, Papers 8:632
> > >
> > >
> > > 
> ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> > >
> > > Visit the gallery! www.tvbf.org/gallery
> > > user:pw = tvbf:jamaicangoose
> > > Check new archives: www.tvbf.org/pipermail
> > > Check old archives: 
> http://www.tvbf.org/archives/velocity/maillist.html
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery! www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > To change your email address, visit 
> http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery! www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>
> _______________________________________________
> To change your email address, visit 
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> ------------------------------------------------------------------------
>
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html