If this engine works as they claim it will have a big advantage over mild hybrids in efficiency, weight and cost. They're taking a long time to build a prototype though...

More blabla from Scuderri but "de moteur que neni" in Japanese this time, why a press release to explain that Scuderri will have a set of slides advertsing the beauty of their engine. In 3 word : "we don't care"

The amuzing thing is that they anonce their first prototype to be build this year "in schedule" when they have postponing years after years. My nickel that they won't have any prototype this year, EESTOR and SCUDERI should merge as the company who keep anouncing but never delivers.

Why do they always just talk? We want results.

What about torque and power density ?
With 2 cylinders instead of 1, the power density is of course divided by around 2, maybe a little less if we consider that the pressure applied on the power cylinder comes when better lever arm that a conventional ICE ... You still have to add the pressure tank, that is not so lightweight if you want some energy reserve.

Hi Fred, from the earlier post:
"The design does not imply the doubling of the size of engines. In the four-stroke cycle, the engine fires every other revolution; in the split-cycle design, it fires every revolution. This is similar to a conventional two-stroke engine, but without the corresponding emissions and fuel consumption issues.

In other words, a four-cylinder split-cycle engine (two sets of paired cylinders) will produce the same number of power strokes as a four-cylinder four-stroke engine (four independent cylinders), but with enhanced efficiency, according to Scuderi."

However, peak power might have to be be limited in order to prevent the power cylinder from overheating.

Why isn't Scuderi talking to the politicians in Washington? Why arn't they talking to the big 3? I would buy a split cycle car in a second.

Thanks for the explanation, you seem to be well informed !
That's right, the Scuderi operates like a 2 stroke engine, without the disavantages.
Do you know what kind of valves are used ? is it reversed valve (opening inside the ducts) ? if not, I see a problem of pressure inside the duct (with low pressure in the cylinder during intake phase), do you have some scheme ?
Problem of reversed valves is well known to be industrialization ...
What would be the mass and size of the pressure tank for a 2 tons passenger car ?
What I don't understand, is that if the system is so simple, why Scuderi still has no prototype, they seem to have a lot of money !!!

The Scuderi's have given a time line on when the engine prototype will be completed (Dec. 08), tested extensively(Jan.08) and unveiled shortly after.
As I mentioned before, the Scuderi's will not be pressured to produce something less than perfect. Also note, there are many specialty companies throughout the world fabricating parts for the prototype which takes additional time to coordinate properly. They are also being very careful in protecting this technology, for what might be the engine for the next 15 to 20 years.
Anyway your wait is almost over we will know one way or the other within the next 3 months, I can't wait.

hi fred, i am on long island, are you also there, do you know william who is working on this project, please update, thanks

Posted by: Fred | November 05, 2008 at 01:51 AM

The Scuderi's have given a time line on when the engine prototype will be completed (Dec. 08), tested extensively(Jan.08) and unveiled shortly after.
As I mentioned before, the Scuderi's will not be pressured to produce something less than perfect. Also note, there are many specialty companies throughout the world fabricating parts for the prototype which takes additional time to coordinate properly. They are also being very careful in protecting this technology, for what might be the engine for the next 15 to 20 years.
Anyway your wait is almost over we will know one way or the other within the next 3 months, I can't wait.