Porsche's Idea for a Six-Stroke Internal Combustion Engine

[KittyLitter]

Porsche has patented a six-stroke internal combustion engine design.
It uses a special crankshaft to create extra compression and power strokes per cycle.

https://www.motor1.com/news/734156/porsche-six-str...

Details of the patent at:

https://patentcenter.uspto.gov/applications/185853...

[Some Gump]

Cool. Only read the article not the tech, but sounds like another way of doing what was done with steam engines (secondary lower compression bit after the main event), and I think it was maybe Ilmor or Judd that had the same idea a few years back with the 3cyl engine that was 2 normal high pressure cylinders and a 3rd larger but lower compression one.

Whether it becomes a commercial thing or not, great to see development in this area. Would also love to hear how it sounds, presumably like nothing we’ve heard before?

[Leithen]

Good video explaining this.

[simonrockman]

An excellent video.


You've got to assume that Porsche has built one or some. It would be great to see it running.
I wonder what it sounds like.
Managing the firing sequence with two powers of strokes will be interesting.
That gear mechanism has to be a problem for wear and maintenance.

[Acorn1]

Bookmarked for later