Mazda filed six rotary engine patents in Japan

Mazda filed six patents related to rotary engines with the Japanese Patent Office on the same day in June, CarBuzz has discovered. The Wankel rotary engine popularized by Mazda will make its return as a range extender in the MX-30 R-EV, though these patent filings describe a larger two-rotor design that could be used to actually propel a car…