Camless engine

[Ade + Lamb Chop]

At 11:03 02/02/00 -0500, 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.

What about the Honda Vtec?

Ade

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