Twin injector system?

goflo at pacbell.net goflo at pacbell.net
Mon Jun 29 16:34:38 GMT 1998


frederic.breitwieser wrote:

> The "ultimate" solution, one that I and a friend applied for a patent on
> (expensive process, but worth it), is to vary the timing relationship of the
> Cam/Crank across the RPM band.  By adjusting the cam for low-RPM the engine
> grunts off the line with reasonable, near-stump pulling power.  At higher
> RPMs, the cam is rotated slightly out of phase with the crank, thus making it
> breath extremely well at higher RPMs as well.  Thus, the power band of a
> particular engine widens, creating better performance throughout.

Could you elaborate? There are many schemes to do this in use. Toyota,
for
instance, advances/retards the ex cam in some two-cam models. Alfa has
a number of variants on this theme. There are others. Was involved in an
attempt to do this with VW air-cooled many years ago - Believe the idea
was sound, but we were'nt up to the fab at the time.

Regards, Jack




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