To all you VTEC lovers out there.
Honda have filed a patent on AVTEC for a fully variable valve timing and lift system.
The only one currently on the market currently is BMW?s Valvetronic, which also removes the need for a throttle butterfly. Every other system as of today has fully variable valve timing, but valve lift is only switchable between two fixed profiles.
paultan.org/archives/2007/04/17/honda-files-advanc.../
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I may be wrong but I believe some recent Porsche flat sixes have an infinitely variable lift system.
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