como já estava a "estragar" um tópico decidi abrir este a assim discutir o sistema novo da honda.
As you can see from the drawings, the implementation of A-VTEC is classic Honda technological innovation. It is simple and compact, with a minimum of moving parts and easy adjustability. The key to the system lies in an innovative circumferential, cam-centric rotationally adjustable drum mechanism. To put it more simply, the intake camshaft (and the intake camshaft only in the proposed implementation) is surrounded by a drum that rotates around the same axis as the camshaft. The position of this drum is determined by a computer controlled gear
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