feliks' engine design.

[djones]

http://www.new4stroke.com/

I have been having a look at Andrew Feliks’ engine design and have a few questions somebody might be able to answer…

1. Surely 50% of the power is wasted as the explosion doesn’t just press the piston down?

2. How is the speed of the valves (pistons) controlled? Surely they can get out of synchronisation?

[flynfrog]

http://www.new4stroke.com/

I have been having a look at Andrew Feliks’ engine design and have a few questions somebody might be able to answer…

1. Surely 50% of the power is wasted as the explosion doesn’t just press the piston down?

2. How is the speed of the valves (pistons) controlled? Surely they can get out of synchronisation?

1. I think you are correct

2. looks like a timing belt is in place

[mep]

I didn't read the homepage carefully and just had a quick look over it,
but I think that all pistons shold be rigidly conected to each other.

So the cant get out of synchronisation.
Or not more easily like normal valves would.

And the power which is delifered to each of the pistons meets again on
one crankshaft - so under ideal conditions nothing is wasted.

But you have three times the amount of pistons and so you have first of all
- a higher friction
and secondly
-more mass to move.

So here is the power waisted.

[Feliks]

My 6 cylinder boxer..





Can have two times less cubic capacity, because that is two times smaller turnover at the flywheel.


Regards Andrew

[Billzilla]

Do you have an animation for that please, Andrew?

[Feliks]

Do you have an animation for that please, Andrew?

Yes I have, but you must rotate upside down.



or





As is proved in practice, the madness of engineer was too small, because they thought that designing an engine with a power of 100 hp, and here it is, with an engine power of 250 hp, with a 600 cc capacity basis and is at 10 000 rpm.
Sometimes, as someone has happiness, this news may be surprised what a good page, well ....

Andrew

[Billzilla]

Thanks.
Why the different sized pistons in one half? The blue/red ones?

[Caito]

Thanks.
Why the different sized pistons in one half? The blue/red ones?

My bet would be the admission are the bigger ones. Same reasons as with "regular valves". When you exhaust gases there's pressure in the cylinder so it goes out much faster, hence you'd rather put a smaller exhaust valve and a bigger inlet valve to let more air in.

[Billzilla]

Ah yes, the sleeve-ports ..... I'm blind, I missed them!

[Feliks]

Thanks.
Why the different sized pistons in one half? The blue/red ones?

Three pistons and thousands of possible combinations. Not only the diameters, but also the position of the angle between them are very significant.
Even so, a simple calculation of the geometric sum of displacements, which formerly had to be the diameter of the cylinder times the stroke, in this case the employment needs to calculate its computer...

Complicated science you need to establish, but later are incredibly large benefits.
I am started, learning, doing this in Excel program for calculation of these basic geometric figures. All colored fields can be changed, and entered sa values from my prototype Already in the same calculation shows a very surprising things. no, for example, from the smallest the combustion chamber ,is some degrees for the TDC root of the piston.
(interesting, whether it will have much more power, as has the amount of ignition in the traditional construction. ??)

http://www.new4stroke.com/volume.zip
http://www.new4stroke.com/volume.xls

Some facts about this construction

http://www.new4stroke.com/new4stroke.pdf

It is certain, you need good scientific and applied to this case, but better twice think twice to do.

Andrew

NEW:During exhaust, exhaust gases drive the two "valves" and add torque.

[Billzilla]

Thanks, Andrew.
It's sort-of similar to my friends six-stroke engine design in that it uses another piston (instead of a head & poppet valves) to work as valves and by doing do add power to the cycle instead of taking a little away.

[Feliks]

I think the era of steam comes to an end. At most in obsolete nuclear power plants will be still used.

Half supports the engine has one very big advantage. Piston not friction on the walls of the "cylinder""Only the seals frictions cylinder

Thanks to these properties, the engine may be running on ... the coal dust.
Rudolf Diesel's first engine was built just on the coal dust, but unfortunately zacierał is at work. In the case of half rotate, will not look any login problems.Simply does not have any large surface friction








Only the directory should be chosen for personal seal. Each round you can straighten lines, of course, resistant to coal dust.....

http://www.youtube.com/watch?v=G6hwiz0QXsE

http://www.passerotti.com.pl/page/pol/download/549P.pdf


Regards Andrew

In Hipermarket : Please 5 KG coal dust..

[Feliks]

[quote name='Wuzak' post='5587386' date='Mar 15 2012, 08:26']Will sufficient heat be generated in the exhaust to be used ina combined cycle situation?[/quote]

Yes, combined cycle, but also the latest trends ...
http://www.gizmag.com/thermoelectric-ca ... mpg/10928/

And since it has to work at the coal face powder (same what they use today's power plants for combustion in boilers).
can seals with carbon, similar to the scrubbing of electric motors
http://hariramco.com/carbon-brushes.html

http://www.dpaonthenet.net/article/4712 ... ssors.aspx

Star engines were characterized biggest always force density






Below picture of the star half rotate around 10 (40) with "cylinders". for the transparency of the picture one can see only 3 additional "cylinders" more than is at the animated film.
One can also see dimensions of the whole of the engine in the assumption that every cylinder has such dimensions for the picture half rotate with the set connecting rod of the Sulzer D= engine of 900 mm and stroke 2500 mm .



So 10 (40) "cylindrical" engine half rotate about the same working capacity in comparing to the Sulzer 10 engine cylindrical on the picture below .

Sulzer: 10 Cylinders 20 m long , 15 m hight , 1500 Ton weight

Half rotate star : 10(40) "Cylinders" 4,5 m diameter , 4,5 m long
about 70 ton weight.



And most importantly.. Since in the engine half rotate mass innertia are several times Sulzer smaller than in the engine, engine half rotate can work with the much greater rotation speed.
Slzer : 102 RPM 60 000 KW

Half rotate 250 RPM 150 000 KW

In same intake work volume .

And now, the efficiency of the engine, due to the friction of the walls of the cylinder to rise about 5%. That is, it is the most efficient machine for the heat, whose efficiency exceeds 50% of the.

http://www.theoildrum.com/node/2249

Regards Andrew

[Feliks]

I found a very nice commercial about the engine with a variable compression ratio ....

http://www.youtube.com/watch?v=DdM2Vbbd ... r_embedded

But why in such a complicated way ...
In my design variable compression ratio is achieved with only ONE hydraulic device, a changing angle between the crankshafts ....
Here the results of the calculations excel...



Even in all 16 cylinders at a time....

Andrew

[Pup]

I think Saab's SVC engine is probably a better counterpoint for comparison...

[youtube]http://www.youtube.com/watch?v=oxR-3Un6WkU[/youtube]