Quote:
Originally Posted by RKDinOKC
Not sure, but Mazda seems to be claiming variable compression with their SkyActive technology. I think it is just a variable cam based on engine loading though.
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Yupp. It is amazingly clever but still needs low boost supplied by Roots SC to cover certain marginal areas of ignition map.
With fully variable geometrical compression ratio, HCCI would be the death of small diesel.