plenum volume

[xxalexx at ix.netcom.com]

> Date:          Mon, 23 Feb 1998 23:55:12 -0500
> From:          Clare Snyder <snyder at huron.net>
> Organization:  Snyder Enterprises
> To:            diy_efi at efi332.eng.ohio-state.edu
> Subject:       Re: plenum volume
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu

> xxalexx at ix.netcom.com wrote:
> > 
> > > Date:          Sun, 22 Feb 1998 14:05:37 -0500
> > > From:          Clare Snyder <snyder at huron.net>
> > > Organization:  Snyder Enterprises
> > > To:            diy_efi at efi332.eng.ohio-state.edu
> > > Subject:       Re: plenum volume
> > > Reply-to:      diy_efi at efi332.eng.ohio-state.edu
> > 
> > > xxalexx at ix.netcom.com wrote:
> > > >
> > > > > Date:          Thu, 19 Feb 1998 23:28:22 -0800
> > > > > To:            diy_efi at efi332.eng.ohio-state.edu
> > > > > From:          Eric Schumacher <e.schumacher at postoffice.worldnet.att.net>
> > > > > Subject:       Re: plenum volume
> > > > > Reply-to:      diy_efi at efi332.eng.ohio-state.edu
> > > >
> > > > Would placing a rotating ball valve in the intake manifold help
> > > > control the reversion?  I thought of this when it looked like half
> > > > the fuel-air was coming out of carb on dyno at WOT and low rpm.
> > > > Alex
> > 
> > > Why not just a good, old fashioned two stroke type reed valve?
> > > --
> > >
> > You can control the frequency. Also could have a  psuedo variable
> > valve timing
> >  Alex
> with a reed valve, the frequency is automatic adjusting, so can still
> give the psuedo variable effect.
> -- 
>
If you had the rotating valve closed during part of intake stroke 
you would a create a large vacuum, if then open suddenly you could
develope a huge pulse and ram effect, the valve could then be closed
to control reversion and tune oscillations for pressure resonance.
alex