New Semi Rotary Engine with 2 Connecting Rods

[Admiral Beez]

This seems overly complicated by half, but thoughts?


View: https://m.youtube.com/watch?v=zTXRbhGMCns

 

[SaparotRob]

Not lately.

 

[pbehn]

I have no idea what problem this solves, it seems to be a great way to produce metal shavings using internal combustion.

 

[MiTasol]

It would appear to be a feasible drone engine at present but I doubt it is much use for anything else at present.

 

[Admiral Beez]

I have no idea what problem this solves, it seems to be a great way to produce metal shavings using internal combustion.

The rotary, valve-less intake and exhaust process is interesting. Sort of like a sleeve valve.

 

[pbehn]

The rotary, valve-less intake and exhaust process is interesting. Sort of like a sleeve valve.

They were supposed to be a new new thing back in the 1970s. As I understand it momentum is a vector with magnitude and direction. The way that works man of the parts in it like the con rods are not travelling in any particular direction so have no momentum, like a "governor" it seems self limiting and wasteful of energy.

 

[MiTasol]

True, but if, as they claim, it is smaller and lighter than the same horsepower conventional engine it would useful for a drone if around the same cost. I can't see any other use admittedly

 

[Admiral Beez]

True, but if, as they claim, it is smaller and lighter than the same horsepower conventional engine it would useful for a drone if around the same cost. I can't see any other use admittedly

I'd think a cheap Chinese knockoff of a Honda motor would suffice.

Engines

Engines

www.qj-jennfeng.com

 

[MiTasol]

As I said - if around the same cost. The reduced weight and smaller frontal area COULD be an advantage.

 

[pbehn]

It may (or may not) produce less vibration or different types of vibration to a normal single cylinder motor. A 90 degree V twin is smoother than a straight "4" for the same displacement, it just doesnt look like it will be when you see one working on a graphic.

 

[sotaro]

cantilevered cranks seem problematic. The exposure of the ports is also problematic. How would variable port timing work?