6 STROKE

 

I dont see how you can call it an extra stroke because it stops on top and bottom, its still a 4 stroke.

Aside from that the cam profile instead of crankshaft moving the piston seems to make sense in theory. They need some performance numbers to coincide with fuel and weight savings numbers but it looks as though it has promise on paper.

 

I don't see how they call it a 6 stroke either. (STROKE 3 - Free exhaust.
This is the first, constant-volume exhaust phase: high-pressure gases are spontaneously evacuated while the piston is stopped at the BDC,) How is this considered a "stroke?. (STROKE 1 - Constant Volume Combustion.
It is the dream of engine designers come true. Ignition begins when the piston is stopped at the TDC. The piston stop lasts for the time calculated by the designers to complete combustion and prevent any back-pressure caused by the spark advance. This enables to make the most of the energy obtained from the fuel, with decreased consumption by up to 20%.) How can this be considered a stroke? It seems all they're doing with the cam shaped crank is improving upon a traditional 4 stroke engine by allowing complete combustion before the piston travels to BDC and more exhaust escape before it travels to TDC. I don't see any performance gain from it, maybe more fuel efficient and less weight(at least according to them).

 

I don't totally understand it but i think it's really cool on paper.

 

By their own admission this is a 4 cycle IC engine. They define 2 cycle as an engine that goes full cycle in 360* and 4 cycle as going full cycle in 720*. This is nothing but a 4 cycle with a roller crankshaft and a semi captive floating piston. I read of a prototype of a similar design many years ago. There was a problem of asymetrical piston and cylinder wear that ended the project back then. Turned out to be nothing more than a curiosity. It sure is interesting though.

 

I don't know, it looks pretty good on paper. Also you got the italians building it. They come up with all sorts of good stuff, pasta, lamborgini, ducati, and so on. I'd like to see how it is on fuel, wear and tear, and o ya a DYNO SHEET comparing it to a 4 stroke of the same size. ahh well wait and see.

 

That would be cool to see. I would think it is a 4 stroke with 2 misses, not a 6 stroke.