Camless engine

[gabe]

Check out the Honda VTEC (Acura Integra / NSX / S2000 / Prelude) engine that has
been in production for something like, over 8 years now.  Now producing in the
neighborhood of 120 hp per liter breathing normally.

Just think if we could get that much pwr out of our domestic engines with that
level of derivability and refinement.  I wouldn't mind a 600+hp, 9000rpm SBC
that idles like a stocker and behaves well enough in town that I could let my
grandmother drive it.

I have read somewhere that Honda is doing research on some form of camless
engine as well.

Gabe

Mike Comai wrote:

> This subject caught my eye and I looked into the toyota and rover VVT
> (variable valve timing I think) systems.  There are basically two types of
> systems in production/semiproduction right now.  I've seens systems with
> multiple lift lobes with hydraulic "shifters" to select the lobe they
> want (this was a wierd setup and I didn't understand the theory but the
> principle seemed like a good one).  Toyota's system and the most common is
> a cam gear on a kind of spedometer gear (for lack of a better
> description).  There is a mechanism that adjust the location of one of the
> gears and thus advances or subtracts from the inital position.  Thus with
> a seperate intake/exhaust cam you can overlap the openings for
> optimization ... this is great except all you can do is adjust the timing
> ... I'll try and find the webpage I was on and send it to the list.
>
> Mike Comai
>
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