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Location: Red Oak, Texas
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Scuderi Groups Inherent Problem

01/24/2010 8:17 PM

My name is Lonny Doyle, I own an Aerospace CNC Machine shop. I started working on a new engine design when I was 18, that was 25 years ago. I have built numerous prototype's throughout the years, each one evolving from the last. I am currently working on another prototype and hopefully this will be the one that gets off the dyno without any problems. My last one seized up some seals. This next prototype will have chrome plated surfaces instead of aluminum that the seals slide against. I self fund these prototypes. The last one was more than $20000 and this will definitely be more than that. I wish I had the financial backing that Scuderi has. One thing that is interesting is that my Split Cycle patent predates Scuderi's. As soon as I get my new patent pending number I will upload the website that shows my new design and pictures of the last one that seized.

The problem that Scuderi will not be able to overcome is waiting until the power piston is on its way down before firing. Air and fuel takes some time to complete its burn. In a conventional Otto Cycle the speed of combustion is accelerated by the fact that the air and fuel is being compressed into a smaller area as the flame front spreads. In the Scuderi, the Air and fuel are racing away from the flame front and as the combustion chamber is steadily getting larger. Unburned air and fuel will inherently travel out the exhaust producing very poor performance especially at higher RPM's.

I personally feel that Scuderi knows this but are too far into their design to bail out. It would have been nice if I could have found the funding they have. I fail miserably in that area.

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#1

Re: Scuderi Groups Inherent Problem

01/24/2010 10:39 PM

OK.....anything else?........questions or anything?

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#2

Re: Scuderi Groups Inherent Problem

01/25/2010 8:13 AM

How does your design differ from Scuderi"s and why is either design better than having the combustion occur in the power generating cylinder as is done in conventional ICE's?

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#3
In reply to #2

Re: Scuderi Groups Inherent Problem

01/25/2010 8:24 AM

Sounds like he solved some of the issues that separates him self from Scuderi.

The problem that Scuderi will not be able to overcome is waiting until the power piston is on its way down before firing. Air and fuel takes some time to complete its burn. In a conventional Otto Cycle the speed of combustion is accelerated by the fact that the air and fuel is being compressed into a smaller area as the flame front spreads. In the Scuderi, the Air and fuel are racing away from the flame front and as the combustion chamber is steadily getting larger. Unburned air and fuel will inherently travel out the exhaust producing very poor performance especially at higher RPM's.

Unfortunately his budget is constraining him, but there seems some effienciy issues....... with possible both.

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#4
In reply to #3

Re: Scuderi Groups Inherent Problem

01/25/2010 9:07 AM

My engine has two major improvements that will help efficiency.

The first is it has no valve train. It uses ports sealed with apex seals from a Mazda engine. Not that this is a Wankle. My engine is a piston engine.

Second is a little more complicated.

In a conventional engine you have to ignite the air and fuel before TDC to allow the fuel to complete its burn cycle on the power stroke. There is a balance of timing that has to be advanced and retarded as the engine speed changes. The ignition has to start as much as 34 degrees BTC. The amount of energy it takes to overcome this increasing pressure on the compression stroke BTC is lost.

In my engine by splitting the cycles I first compress the Air and Fuel into a combustion chamber. The air and fuel are ignited and then 40 degrees later the completely combusted fuel is introduced to the power stroke at TDC via ports.

The intake and compression pistons are 40 degrees ahead of the power and exhaust pistons. This is what give the air and fuel time to burn.

I will never claim that my design will double the efficiency of a conventional engine.

I am just trying to achieved a measurable improvement.

My engine uses no new mechanical technologies, I've just mixed up the existing ones to create a new engine.

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Users who posted comments:

Lonny Doyle (1); lyn (1); phoenix911 (2)

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