Odd engine

[John A]

This is a video of an engine I’ve not seen before. https://youtu.be/4Fkh-MmqOmc
Has anyone seen one in operation?

[Dave Swanson]

This is a video of an engine I’ve not seen before. https://youtu.be/4Fkh-MmqOmc
Has anyone seen one in operation?

My guess would be that is one cylinder in a bank for maritime application.  But just a WAG. 

[lucky phil]

Nope, not seen this. Eight stroke engine then? Eight strokes/crank revolution. I'd like to know what the advantages and disadvantages are.

Ciao

[leroy_can]

  Something rings a bell about a very expensive Ducati single 20 or so years back but I could be way off

[kballowe]

Atkinson engine design.  The Toyota Prius (for one) uses an engine of this design.

[leroy_can]

 Here is what I had seen that triggered a memory. 1993 Ducati Supermono


  Not the same thing but you can see how I made the connection

[John A]

Here is what I had seen that triggered a memory. 1993 Ducati Supermono


  Not the same thing but you can see how I made the connection

10500 RPM , that must’ve sounded incredible. Good find!

[lucky phil]

10500 RPM , that must’ve sounded incredible. Good find!

The best part is you can easily make one yourself if you feel the need. All you need is a twin engine and a bolt on section for the balance beam and the balance beam itself. Pretty easy and sorts the major primary imbalance.

Ciao

[LowRyter]

Atkinson Cycle.  Variable stroke, the power and exhaust strokes are longer than intake and compression due the angle on the jack shaft (or whatchacallit). The cam is run on the mainshaft.

[jcctx]

Can't say about the Prius; but the "Atkinson " V6 in my Tacoma is an emulation of the mechanical one (as above) by using variable cam timing. Seems to work as I get 22+ mpg overall and has since new.

[Guzzistaracing]

Here is what I had seen that triggered a memory. 1993 Ducati Supermono


  Not the same thing but you can see how I made the connection

If I look at the picture is it so that this system was used on the albatross racer from Guzzi also?

[lucky phil]

If I look at the picture is it so that this system was used on the albatross racer from Guzzi also?

No the Albatross had no imbalance compensation. No Guzzi single did.

Ciao