I am from Brazil and travel a lot in Schengen countries. Under the rules of Schengen visa (3 months stay in a 6 months period). In my passport are the entrance and exit stamps, also to chec the days I stay in Schengen. I need a new passport and will get this in Brazil. So in this new passport are NOT the stamps. Does this mean I start new with the Schengen visa rule? I seems like. The new passport is empty. Or do I miss something? It would be great because I am almost on my 90 days stay in the period of 180 days.
No. The rules apply to you as an individual person, not to a specific passport. No matter how many passports you have, you, the unique human being, get 90 out of 180 days (otherwise a lot of people would be conveniently losing their passport regularly).