Ready for a Six-Stroke Engine? A New Frontier in Automotive Innovation

I have a soft spot for unconventional engines, and this new six-stroke engine is no exception. Its origins are promising.

The Basics of Traditional Combustion Engines

Most of us understand how four-stroke engines work, using the classic "suck-squish-bang-blow" system first demonstrated by Otto and Langen in 1876. A few years later, Dugald Clark introduced the two-stroke engine, concentrating power but increasing emissions.

Enter the Six-Stroke

Fast forward to September 2024: Porsche and the Technical University of Cluj-Napoca introduced a new patent for a six-stroke engine. Essentially, it's a conventional engine with a twist—a geared crankshaft enabling two consecutive power strokes, with traditional intake and exhaust strokes. A clever crankshaft arrangement allows two power pulses in three crankshaft revolutions.

The Sound of Innovation

Expect a smoother sound than a traditional four-stroke engine. Depending on its build, it might produce a unique rhythm. The patent describes various engine configurations—from inline to V and W engines—enhancing its adaptability.

A Closer Look at the Crankshaft Design

The innovative crankshaft allows alternative piston movements, altering standard dead-center positions. Direct connections give way to a planetary gear system, crucial for its operational uniqueness. This setup even allows for variable compression by altering its components.

The Benefits

With up to 33% more power pulses, this engine might significantly boost output. Especially in an inline-six (6=9) configuration, it could rival the smoothness of a V-12 engine. In compact setups, it may serve as an efficient range extender.

Challenges and Future Prospects

While Porsche and its partner chose not to comment, automotive expert Chris Theodore provided insights. Any unique engine concept faces challenges, but this innovation is backed by reputable engineering and requires minimal retooling.

In brief, the six-stroke engine concept from Porsche hints at a leap in engine design with potential performance and efficiency gains. However, its future is uncertain, leaving us intrigued but cautious.

  

In summary, the six-stroke engine offers the potential for enhanced performance and efficiency without the need for extensive overhauls. While its noise and operation might be unfamiliar, its prospects are compelling. Only time will tell if it takes the automotive world by storm or remains an engineering curiosity.