Remove ads from this guestbook - starting at just €2,50
9:12am 04-11-2018
Does not this remind you of the mechanics drawn by James Watt ? But it's necessary to back 250 years back ..

Hand-drawn diagram by James Watt explaining his discovery of the "parallel motion" in a letter to his Sohn: "The idea originated in this manner. On finding double chains, or racks and sectors, very inconvenient for communicating the motion of the piston-rod to the angulat motion of the working-beam, I set to work to try if I could not contrieve some means of performing the same form motions turning upon centres, and after some time it occured to me that AB, CD, being two equal radii revolving on the centres B and C, and connected together by a rod AD, in moving through arches of certain length, the variations from straight line would be nearly equal and opposite, and that the point E would describe a line nearly straight, and that if for convenice the radius CD was only half of AB, by moving the point E nearer to D, the same would take place; and from this the construction, afterwards called the parallel motion was derived."

Of course, instead of a rope, you can use any type of parallel movement mechanism.

And of course, it's getting higher and higher speed after that ...

So this Wats is not bad anymore .. but this string can have such a form of springs from the watch's bannister .. and then it is the simplest solution and guaranteeing higher revolutions .. obviously the ideal is Peaucellier-Lipkin, but also is the most complicated .. But after some analysis, to which the arms attach to the connecting rod, i.e. which carries the main forces, the rest may not have to be a monstrous size ..
In any case, the use of a traditional crosshead certainly became archaism ... because with the use of any of these solutions, the side force on the crowd does not occur, and was not moved below, to crosshedas, and was liquidated at all ..

Also from my drawing you can see that a very easy way we can do cooling with the water of the piston ..
This can give us, due to its very low temperature, a change to Teflon efflorescence and one would be tempted to completely give up the oil.
And this is a very important matter, which allows us this construction, so it seems to me that maybe you can do practically this matter and try some teflon bearings and seals

Here is the animation of THE PEAUCELLIER-LIPKIN LINKAGE which is automatically downloaded

Normal position engine crosshead Peaucellier-Lipkin :rolleyes:

2:43am 04-10-2018
So I continued to divide the hair into four...

Yes, we slowly develop this way of bypassing the lateral force of the piston .. here, that's all you have to do is one lever that has a half-ring at the end, but the other way round. This way one pulls up and the other down during the movement of the lever ... It can be used for a full four-stroke engine .. Well, see how easy we can cool the water piston ..
2:44am 03-28-2018
Nice video, and at the end you can see how fast it can turn...

7:09pm 02-18-2018
A traditional crosshead, usually unbalanced, to save a little on the construction .. But for this, when the command "whole back" is taken for the ship's engine, only 60% of the power can actually be used, because of this unsymmetrical crosshead, which can not withstand greater load, in the reverse than usual turnover.
In my solution, it does not matter which engine the engine is on, so "the whole back" can actually be "all", i.e. 100% ..

But in my solution, it may be asymmetrically, for the same reason as in the traditional one, it means that the piston is pressed down all the time, if not by the work stroke, then by the compression stroke ... (of course, it is 2 stroke ) .. Therefore, the second lower frame, can be "symbolic" and the thin line, just to keep the kinematic bond in some abnormal situations.
Of course, all this new mechanism can be in a separate housing, separating the oiled space, from the space under the piston, which can be cooled water ..
Developing further ideas for smaller engines, instead of a rope, we can use a toothed belt, whose durability is known from the mechanisms of timing .. But the revolutions can be a little bigger .. Here is a handbook, but it is very long uploading, because 35 MB .. On the 74 page, such a two-stroke engine, whose piston pin, is a ball, which moves only pressure from above in a pristine way ..

7:05pm 02-18-2018
Or so very quiet?

Or some game ...

Or maybe such a rope made of such a chain or a timing belts ?
Half milion ibs ...

7:04pm 02-18-2018
Here is a textbook of a young handyman..

Now he will describe how we can change the crankshaft pitch in relation to the piston stroke and what it can give us in Feliks Crosshead .

9:50am 02-17-2018
Such a way to completely separate the box with the use of oil lubricating all mechanisms from the space under the piston, which can now be cooled with water,

hanbook Hstory engine

11:45pm 02-05-2018
What if you made Teflon so much ?
And maybe in diesel it would be enough to lubricate them with fuel ?

And the rolling bearings on the crank with the grease in the middle ?

This ... the engine could have been WITHOUT lubricating oil.

Just what would Castrol say ?

Or maybe a carbon fiber line ?
11:45pm 02-05-2018
Well, there is one big advantage of such a crosshead. We can freely change the stroke, piston in relation to the crankshaft stroke .. For example, the stroke of the piston is the same, and the crankshaft stroke even twice as long .. Everything will depend on the demand, and what is most important in a given engine application ..
Of course, the rope has to go exactly in the axis of the piston ..

So that his way of placing the crankshaft, as you can see in the figure, from the side, will make the engine will be much lower ..
Of course, only for marine engines 102 rpm

11:39pm 02-02-2018

The film shows that with 3 movements of the arm, the vehicle travels about 10 meters .. with a piston stroke of 50 cm, having 300 cubic centimeters of air, a liter will travel 30 meters .. from 100 liters 3 km, and from a pressure of 200 atmospheres 60 km. .. 10 such tanks, and we have a range of 600 km .. 100-liter tank is a pipe with a diameter of 24 cm and a length of 2 meters in a square meter will fit 16 such tanks .. ie in the tank 1 m x 1 m x 2 m, 200 atm, it we have a range of 1000km ... I am wrong somewhere, because through my miastenia , I have a double vision .. Such an idea for a Polish family-owned electromobile car .. And it is with us (Poland) REAL, most importantly ..
No Tesla ..

with a simple and light, cheap engine, pneumatic cylinder .. Just 3 cm in diameter, if the pressure is 10 atmospheres ..
11:35pm 02-02-2018

5:37am 02-02-2018
Well, this is my new idea ... I decided to get rid of force, guide the piston ...
 This gives an average of about 10% higher efficiency of the engine, because we do not waste energy on friction .. In marine, eolnobrotowych, so far used to be used crosshed.
Instead, I used such a machanism, based on oil like a pump, with a rope as a working element .. Because the rope can not be "pushed", I put the other such arm in motion to the other side .. And from this simple connecting rod driving the crankshaft. Thanks to this, there is no side force anywhere in the whole mechanism .. It is in a traditional design, very large force, reaching up to 1/6 of the total force in the connecting rod driving the crankshaft .. Here its size is calculated .. I think that the average 10% of the engine's reliability will be obtained. The engine has very small orots, 100 rows per minute, and I think that this will work ... In the steam locomotive, we will get rid of the slider, and its efficiency will increase significantly ..
Certainly the demand for oil, which suppressed this large friction, will be much smaller ..
Maybe someday it will go to F1

Regards Andrew
7:00pm 12-15-2017
So I have to thank that good people brought me to the ground with my Segway Car Felix ... I of course have invented it completely unmistakably, never seen such a solution .. But I was provided with my much earlier (2011) professional Segway rules here a few photos.

2:56am 07-17-2017
Al sure in this company you did not see the veturi nozzle of my idea. Put on the luggage of the car such a tube with a diameter of the meter, in the middle of a real turbine and at 40 km / h we have an additional 100 hp .. And now what?

2:54am 07-17-2017
Segway Car
Messages: 31 until 45 of 411.
Number of pages: 28
Newer1 2 [3] 4 5 6 7Older