Mazda has filed six patents with the Japanese Patent Office related to rotary engines, according to a report by CarBuzz. These patents hint at the potential return of the Wankel rotary engine in Mazda vehicles, including a larger two-rotor design that could be used to power a car. This news has excited rotary engine enthusiasts and raises the possibility of a new generation of rotary-powered Mazda sports cars.
One of the primary goals stated in the patents is to improve the fuel efficiency of rotary engines. This objective addresses one of the factors that led to the discontinuation of the engines when production of the Mazda RX-8 ceased in 2012. The patents showcase different rotor designs, each featuring a recessed cutout of unique dimensions. In a rotary engine, the rotor spins in the center of a housing, with the empty space around the rotor serving as the combustion chamber. The cutouts in the patents alter the shape of the combustion chamber, allowing for finer control of ignition and more complete combustion. This design modification has the potential to significantly enhance fuel efficiency.
Additionally, three of the patents focus on the implementation of exhaust gas recirculation (EGR) in rotary engines. EGR is a process commonly used in conventional piston engines to improve efficiency. It involves cooling exhaust gases in a heat exchanger and then reintroducing them back into the engine. Mazda’s patents describe the application of EGR to a rotary engine, detailing an intake design and how it would attach to the engine. This suggests that Mazda is exploring new ways to improve the efficiency of rotary engines, leveraging existing technologies.
It is worth noting that Mazda has previously filed patents related to rotary engines, generating excitement among enthusiasts. Earlier this year, the company filed a patent for a rotary hybrid powertrain with three electric motors, further fueling speculation about the potential return of rotary-powered vehicles. Additionally, a 2022 patent filing hinted at a rotary hybrid powertrain paired with rear-wheel drive, suggesting that Mazda is actively exploring different configurations and possibilities for rotary engines.
Related Post
While patent filings provide insights into a company’s research and development efforts, they do not always result in tangible products. It is essential to acknowledge that the latest round of rotary patents from Mazda may or may not lead to the production of new rotary-powered vehicles. However, the fact that Mazda continues to invest in rotary engine technologies and explore their potential applications suggests that the company sees value and potential in this unique engine design.
The Wankel rotary engine, popularized by Mazda, has a devoted fan base due to its distinct characteristics and performance capabilities. The potential return of rotary engines in Mazda vehicles could offer a unique driving experience and serve as a differentiating factor in a market dominated by conventional piston engines. Rotary engines are known for their smooth power delivery, high-revving nature, and compact size, which allows for more design flexibility in vehicle layout.
In conclusion, Mazda’s recent patent filings related to rotary engines indicate the company’s continued interest and investment in this technology. The stated goals of improving fuel efficiency and exploring new applications like exhaust gas recirculation highlight Mazda’s commitment to pushing the boundaries of rotary engine design. While the outcome of these patents remains uncertain, they have reignited the hopes of rotary engine enthusiasts and have the potential to pave the way for a new generation of rotary-powered Mazda sports cars.
