I remember a number of years back, maybe 10 or so, that one of the Japanese
companies (Honda, I think) announced a new valve design. Still mechanically
driven, but eliminated most of the valve train. The valves were rotary.
There was a shaft kind of like the camshaft that rode right on top of the
cylinder head. The surfaces that were sort of like lobes turned right
against the opening for the intake and exhaust ports. As it turned the ports
were opened and closed by the "lobes" blocking the openings.
I'm afraid I didn't describe that very well and I don't remember what they
called it. Anybody know what I'm talking about or if it were ever used?
Eddie
1971 Midget
From: "R. O. Lindsay" <rolindsay@dgrc.com>
> James Nazarian Jr wrote:
>
> > > Rick said - Okay, so no one watched the race...
> > >
> > I was particularly intrigued by the rumor that Relault might be working
on electromagnetically controlled valves.
>
> Yes! When you think through that, the only way to
> make that work (to their advantage) is to use a valve
> design OTHER than a cone setting in a circular hole.
> In short, the whole design of the valve has to be
> different. Granted you could open and close a
> conventional valve with a solenoid but that requires
> mass and mass retards acceleration. They went to
> pneumatic valve actuation so as to cut DOWN the
> mass of the valve operating mechanism. That's how
> they cracked the 17,000rpm barrier. It will be
> fascinating to see what they come up with as they
> were talking about >20,000rpm!!! Yeeehaaaa!
>
> rick
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