Electronic valve control

[Clare Snyder]

Frederic Breitwieser wrote:
> 
> >If you use a solenoid on a level which is connected to the rod, the
> >opening and closing will take less effort than a spring, and provide
> >just as good a seal.
> 
> Actually, take it a step further.  We all want more flow, so the "valve" is
> nothing more than a cylinder, with a large 3" hole on the bottom of the
> rod, with a 3" hole on one side, with a smooth, radiused 90 degree bend
> internal to the cylinder, connecting the two holes.  There are four positions.
> 
> Connect cylinder to the intake.
> closed
> Connect cylinder to the exhaust.
> closed
> 
> repeat.
> 
> no springs, no problems, and in theory, you can make the internal bore of
> this rotating cylinder valve assembly almost as large as the bore of the
> cylinder.  And rotating the units is very easy, they can be gear driven so
> there are no chains to wear out, no rockers, no valve springs, nada.  Less
> moving parts.
> 
> One can control the rotation of the valve cylinder either mechanically, or
> electronically with a stepper motor.  The rotation of the cylinder has to
> be 1/2 the speed of the crank, which motors exist to do.  Small motors
> which rotate (rather than linear as with "ordinary" valve train) easily
> break into the 10,000 RPM range.  And stepper circuits exist.
> 
> Let make one :)
> Frederic Breitwieser
> Bridgeport, CT 06606
> http://www.xephic.dynip.com/
> 
> 1993 Supercharged Lincoln Continental
> 1989 4-Door Softtop Humvee (Hummer)
> 2000 Buick GTP (Mid-engine track car)
> 
> ---
Only problem I see (or at least the first one) is CR. The volume of the
"port" in the cyl is added to the clearance volume.
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