Anyone else see this?

Scuderi Split Cycle Engine Design
http://www.scuderigroup.com



"The Scuderi Split-Cycle Engine changes the heart of the conventional engine by dividing (or splitting) the four strokes of the Otto cycle over a paired combination of one compression cylinder and one power cylinder. Gas is compressed in the compression cylinder and transferred to the power cylinder through a gas passage..."
http://www.scuderigroup.com/te....html

... and we though VTEC was cool.

 

That is weird!

I wonder how much efficiency is lost from having more moving parts as compared to what is gained from (presumably) getting better and more consistent compression.

I wonder how this actually reduces emissions? Time to do some reading.

 

I was wondering how much all that extra mass would affect the speed at which the engine revs up and down... nifty idea though.

Christian

 

I'm looking for information of them having actually built this... haven't found any yet just info about "how" they plan on marketing and developing the idea.

Ah I think I found evidence of prototypes built:
http://www.scuderigroup.com/ne...5.pdf (on p. 2)
...

and an earlier publication titled Power Stroke (January 2005) further explains the technology:
http://www.scuderigroup.com/ne...5.pdf

 

That looks nifty, but how would it differ in efficeincy and power output from just a two cylinder 4 stroke? Same # of power strokes per cycle. Also the combustion cylinder would get freakin' hot! Many engine parts, valves in particular, use the incomming charge as well as time in contact with the relatively cool head to cool them.

 

So its just a supercharger then? Meh.

 

Yeah the more I read the more I realize that this technology has a pretty steep up-hill battle to contend with. think: rotary engine.

Interesting idea just the same. (shrug)

I had a couple of thoughts... Having 2x as many pistons to accomplish the same goal with "greater efficiency". hmmm. More mass? More pistons?

Didn't honda come up with a pretty significant way of dealing with NOx back in like 84 with the CVCC? I'm wondering if Honda has something similar to this idea in it's engineering pile.

I did send away for more information, and hopefully I read something more substantial then marketing jargon.

 

An interesting idea, but I think ultimately doomed to obscurity.

The big problem that I can see is the valve train. just in their model they have 2 valves per cylinder but most modern performance engines have 4 per cylinder making them have to control 8 valves plus the check valve. Sounds like a tough bit of overly complicated engineering.

Plus the complexity of extracting horsepower out of the engine jump by an order of magnitude.

Still, a neat idea.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by emwavey &raquo;</TD></TR><TR><TD CLASS="quote">
Didn't honda come up with a pretty significant way of dealing with NOx back in like 84 with the CVCC? I'm wondering if Honda has something similar to this idea in it's engineering pile.
</TD></TR></TABLE>

I think it was earlier than that. My 78 Wagon had a 1.5 CVCC engine and ate Datsun 510's for lunch.