New Rotary Engine Design
The new rotary engine is a welcome development after years of meh emissions and unstable durability. However, a new startup firm, Astron, has developed a 33-pound rotary engine that produces 162 horsepower. This is a far cry from the typical 840- pound turbocharged V8 diesel engine with 340hp and a power-to-weight ratio of 0.40hp/lb.
Szorenyi rotary engine design
The Szorenyi rotary engine is a simple, purely mechanical engine with one chamber, a rotor. It uses a mathematically defined stator. In the Szorenyi rotary engine, the rotor segments change from a square configuration to a rhombic one during rotation. This design achieves a volumetric efficiency of 100%. It can operate with a wide-open throttle without knocking. Its main features are centered around the combustion chamber and the pressure on the stator. Its internal structure features a direct contact power take-off crank mechanism.
REDA’s new engine design can also run on diesel fuel, with a pre-compression phase. Its design is aligned with the concept of the “one fuel” by the U.S. military. It is described in a SAE Technical Paper. The Szorenyi rotary engine is capable of running on gasoline, avgas, butane, hydrogen, and propane. Its well-separated inlet and exhaust ports allow for a variety of fuel types, including ethanol and biodiesel.
Mazda’s new rotary engine design
It is unclear whether Mazda will continue to produce the iconic rotary engine, which was last seen in the MX-5 in the late 1980s. While the company has stated that it will return with the MX-30 in 2022, rumors have swirled that the rotary is being shelved for the time being. In an effort to keep the engine relevant, Mazda is looking at several auto applications. The new engine will also be used as a range extender for electric vehicles.
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