Ok I think this is pretty interesting. I went to the LA Auto Show last night and this guy Morgado was there demonstrating his new invention which he just released to the public in March 2005. It's called the MYT (Massive Yet Tiny) engine. It's only 150 lbs. and puts out 815 ft-lbs. of torque at only 800 rpms. At first I was a bit skeptical but once I visited the site it made more sense. I don't know what to think of it though. Have a look for yourself:

www.angellabsllc.com

 

When I look at that engine all I can think of is how nice it would be in my Cessna 172 swinging a prop . The power to weight ratio is amazing to say the least . The big question for me would be is how does it hold up for the long haul , and what are the down sides of it if any . It seems just to good to be true , I for one would pay to see it on a set of rollers putting that horsepower to the ground for a while . Simply amazing to say the least !

 

I'd like to see that thing running. Looks promising, but I'm skepticle.

 

The gas compaines will probably buy the patent and bury it.

 

It looks like they have a good setup for an air motor or pump, but I wonder how it will hold up to combustion temperatures and pressures.

 

They don't say at what rpm the engine produces those numbers. there are already gas turbines that produce fantastic hp and tq ratings right down to 0 rpm

"T58-GE-8F

The General Electric T58 is a free-shaft axial flow gas turbine. The compressor has 10 stages with variable inlet guide vanes and variable stators on the first three stages. The compression ratio is 8.4:1, it flows approximately 13.7 lb/s (11,000 cfm) @ 27,300 rpm. The combustion chamber is of the annular design. Two turbines drive the compressor and one drives the load through the rear at 20,500 rpm. Specific fuel consumption is 0.64 lb/shp/h. The engine weighs 350 lb [159 kg] and produces approximately 1,400 hp. With a 3.25:1 reduction gearbox this engine will produce 1,270 lb-ft of torque at 6,000 rpm."

Sounds interesting though, I think they need to publish a little more info....

 

Well actually, he hooked up an air compressor to one side of the engine and ran the engine for a while to prove it works. He gave it an initial burst of air then the engine ran on itself for a while since it's supposed to have very little friction. I think it's a good idea but it's still in its primitive stages. If it were to be used for real life applications, they would have to put much more R&D into it to prove its stability, reliability, etc. The problem is that I think this type of design may not serve well as we approach future technology. Now we're working on fuel cells, so another internal combustion engine may be out dated.

 

I dunno'... I think I'll stick with my Cummins MYD engine... (Massive Yet Durable)...

 

That is a sweet design, but just looks to me like it couldnt be very durable being that small... I just dont feel like you would see it in a 1 ton truck with 20k lbs behind it running 60mph up a hill on the interstate. It is a very neat concept though. I think ill stick with my CTD too.

Eric

 

I see the pistons compressing gas and the combustion chamber expanding. The pistons are moving around the axis in a donut shaped cylinder. I don't see how the pistons are turning a shaft. Can anyone explain?

 

 

I see the pic but I don't see a connection from pistons to a shaft. Is the assembly in the center some sort of spyder crankshaft? If so then the inner edge of each piston is the attachment point, and combustion pressure creates a bending moment at the attachment. I don't like that.

 

I cant figure out how it make 60:1 compression.....I cant see how it makes compression at all

 

Ive been trying to figure that out as well. The pic does not do much good. I cant see how the piston is linked to the crankshaft at all. After waching the animation of the engine I am yet farther perplexed because the pistons are not all traveling at the same speed. everyother one speeds up then slowes down rite before it hits the one in front of it, then the slow one takes off and and slowes down rite before it hits the next one. I would think there needs to be 2 crank shafts to acomplish this. Otherwise there is no posible way they could all be hooked to the same crank or oputput shaft or what ever it is called on that thing. Definatly interesting though.

 

Watch this.
http://www.plug2work.com/angellabsllc/d/mytani.html

It may make you more confused though but it does anser your question. My problem is it raises more questions than it ansers. Like how do the pistons travel at diferent speeds??? That would require 2 crank shafts or out put shafts or what ever they call them on that.