help engineering

[Piccoloingegnere]

Hello.
I would like to try to put into practice what I learned and I wanted to know if among you there is a real mechanical engineer, maybe working in the automotive, to help me realize my own little, but great, I want to know if one of you is a real mechanical engineer, maybe you work in the automotive, to help me realize my own little, but great, I want to try it all.

 

[daniele-1]

Bye!
I'm glad to see an endothermic lover! the dream that you pursue is not so trivial to realize,it is enough to think that for the design of a static structure, for example a house, just an engineer, and that to design a particular of a motor (for example a complete test of its details) are used some ten!!! !
in your favor there is the passion for motors, which allows you to learn faster and to "digest" essential disciplines for design itself (I refer to mathematical analysis etc.).cmq,to make it short I can tell you,for experience,that the path is long but feasible (especially if you are 17 years old).
If you need help or info, I'll gladly do it.
hello and good luck!!!

 

[michele81]

my advice is to "play" you with the two times of some cyclomotor a bit dated and try some modification! already that is not easy, and I think many have tried before 18 years...:smile:
memory of the modified hi engines in every way...not always with positive effects!:frown:

 

[Fulvio Romano]

I believe that the problem of such an undertaking and the creation of pieces with the desired tolerances. or we turn to workshops, and I do not think it is a reasonable cost, or we buy pieces already made, but at that point it could be less part of satisfaction.

attempt to alear a cylinder with nails...beh also this is not likely!

The idea of michele81 seems good.. .

 

[Piccoloingegnere]

However we try to do so.I give you the measurements of each component and you every time tell me what's wrong and how to correct it.At the end, I also care to see only finished the project, this would already give me enough personal satisfaction, then I would give it as well but I care to see it realized!

diameter, given alesage, of 80mm, depth combustion chamber [Heron] (I chose a diesel) made in the sky of the piston : 1.7 mm. h piston = 70,25 mm, diameter pin - wall pin : 35mm - 10mm. sealing rings 3 - 1mm x 1 - distance between rings 1,02mm - ring shave-oil 2,00 mm.

first general engine data:
no toroidal present in the combustion chamber to make its shape cleaner. (you lose something of the order of 5% every 50 cv\l in return, I think, but you earn a lot in cleaning the room).
estimated compression ratio : 15,00 - 15.5:1 (the compression ratio becomes higher and the more irregular the engine.then + compression = + power but - regularity, fluidity, quietness and longevity).

axc = 80mm x 107mm = cc (cm3 total) 2150(,272).

to you the word.

 

[Piccoloingegnere]

I put 1 my sketch that makes, though little, the idea of the piston.
http://img207.imageshack.us/img207/5015/scansione0003b.jpgfor the room instead you should intuit it of yours with the few data provided so far.:smile:

 

[sampom]

axc = 80mm x 107mm = cc (cm3 totali) 2150(,272).
.

..of course we're talking about a 4 cil. ?

greetings
Marco:smile:

 

[Piccoloingegnere]

4l! Even if the temptation to put them z (vdi13°) was so much but then only complications would be created.

 

[MFT]

I put 1 my sketch that makes, though little, the idea of the piston.
http://img207.imageshack.us/img207/5015/scansione0003b.jpgfor the room instead you should intuit it of yours with the few data provided so far.:smile:

congratulations on the initiative, I just want to make a note I will be wrong but I doubt that you are 17 years old.

Mar

 

[Piccoloingegnere]

the advantage of the very narrow v solution (13° only) is, as obvious, of calco vw but is undoubtedly advantageous at the end of the encumbrance, of the balance of the breaks and of the rigidity of the block, but I think it becomes too complicated the project.

 

[Piccoloingegnere]

congratulations on the initiative, I just want to make a note I will be wrong but I doubt that you are 17 years old.

Mar

No, I'm 17, if you want me to put my ID. . .

 

[Piccoloingegnere]

I mean,
What do I have to correct right now?

 

[Piccoloingegnere]

I am already thinking about the design of the biellas, so I am starting from the basal manifolds. For the turbo (totally another planet), finally, I am trying to define the dimensions. I would like to avoid an excessive counter-pressure and at the same time I would like to keep small dimensions, to combine with spherical bearings in place of the annulars and the variable geometry on the aspiration.

 

[stevie]

However we try to do so.I give you the measurements of each component and you every time tell me what's wrong and how to correct it.At the end, I also care to see only finished the project, this would already give me enough personal satisfaction, then I would give it as well but I care to see it realized!

diameter, given alesage, of 80mm, depth combustion chamber [Heron] (I chose a diesel) made in the sky of the piston : 1.7 mm. h piston = 70,25 mm, diameter pin - wall pin : 35mm - 10mm. sealing rings 3 - 1mm x 1 - distance between rings 1,02mm - ring shave-oil 2,00 mm.

first general engine data:
no toroidal present in the combustion chamber to make its shape cleaner. (you lose something of the order of 5% every 50 cv\l in return, I think, but you earn a lot in cleaning the room).
estimated compression ratio : 15,00 - 15.5:1 (the compression ratio becomes higher and the more irregular the engine.then + compression = + power but - regularity, fluidity, quietness and longevity).

axc = 80mm x 107mm = cc (cm3 total) 2150(,272).

to you the word.

If I can say my...
will be a coincidence but the piston height of 70.25 mm is the same height as the piston indicated by that fantomatic mechanical engineer of the previous post. . . Besides the writing that you attach is not a 17-year-old, and I immediately disagree to post a minor's identity card to corroborate your thesis.
I don't know what your intentions are, do you want someone to model your engine?
of possible options there is an infinity regarding the design of a motor as well as any machine. This is the "beautiful" of mechanics. find many texts both Italian and English, if you are lucky to know the German then... to make some name jacosa, ricardo, pinion, ferrari etc

 

[Er Presidente]

I mean,
What do I have to correct right now?

Yeah, you're 17.

impatient like a thoroughbred!

If I had to advise you I would just tell you one thing, to grow, to learn you have to be wrong and the error has to be rule not exception, thinking of doing everything perfect could be too optimistic and transforming enthusiasm into cocent disappointment.

think big and live with moderation.

it would be useful to put together a project "proof of error", i.e. not rigid, but flexible adaptable and able to adapt to errors without trauma, then once broken the nose will be possible to pass to the " dream", without fear and with the certainty of experience.

so I would say, do something simple, but fast and uncomplicated, not a four cylinders, but a monocylinder, built in a rough way, but that commits few resources and that it is easy to change in later times.

my idea would be a "study" mocilindrical, they exist for the evaluation tests of fuels and should not be difficult to find examples "on line".
are engines designed to vary compression ratios, strokes and displacements in a simple way and built in a "simpliciotto" way, do the tests experience solutions, maybe the yields will not be excellent, but you can do comparisons and experience.

remains a problem, the power, seems strange but a motor function even if made to "short", an injection pump no, self-built also that is an enterprise in the enterprise and you have to think of a philosophy of approach that leads to certain results.

compliments and do not break down.

Hi.

 

[Er Presidente]

...I took on the basis of my studies the mitsubishi td025. .

Then I'll stay.
You don't want to make a diesel, you want to get one.
processing engines is very nice, but you should be clearer.
what is the point of discussing an existing piston?

 

[Piccoloingegnere]

If I can say my...
will be a coincidence but the piston height of 70.25 mm is the same height as the piston indicated by that fantomatic mechanical engineer of the previous post. . . Besides the writing that you attach is not a 17-year-old, and I immediately disagree to post a minor's identity card to corroborate your thesis.
I don't know what your intentions are, do you want someone to model your engine?
of possible options there is an infinity regarding the design of a motor as well as any machine. This is the "beautiful" of mechanics. find many texts both Italian and English, if you are lucky to know the German then... to make some name jacosa, ricardo, pinion, ferrari etc

then, I immediately camouflage the photo on the ID card and post it. the height of the piston I copied it, or rather gave me an idea and I elaborated it! then, what would you say about my writing sorry? everyone writes as best he thinks!

 

[Piccoloingegnere]

Then I'll stay.
You don't want to make a diesel, you want to get one.
processing engines is very nice, but you should be clearer.
what is the point of discussing an existing piston?

no no diesel is all mine.the mitsubishi brand and turbine!it does not only produce engines the mitsu, but also spare parts.think that this turbine is also used by ford for 1600 tdci, hdi 90 cv

 

[Piccoloingegnere]

http://img291.imageshack.us/i/scansione00031.jpg/questa è la mia carta d'identità comunque.

 

[Er Presidente]

are already drawing the biellas

I think they're coming in half an hour.

I am adding variable geometry

Can we do it tomorrow?

spherical bearings and other improvers

I hope we can see them before noon!

like a magazine about the discharge that best conveys on it the gases.

So next week, let's send the mistupid home!

a good idea would be to reduce by 10% the drain pin and eliminate wastegate.

Of course, it would be brilliant, all these who put useless girantone on!

I'd get a motor superpower pressure in conjunction with the maximum turbo pressure

I would understand, is there a way to have a superpower pressure different from that of the "turbo"?

reducing the lag again.

Here, if we reduce the lag (on an overcharged diesel engine!!!!!) then we are fine!

then, maybe you could delete the intercooler

Of course, you idiots! putting the intercooler is contraindicated (to what? )

and I would notice as much as possible the ducts

Good

Then, I'm studying the geometry of the cams. I'd like to make some kind of v-tec for diesels.

Of course, we don't miss anything!

so I could have the torque, however small, present for more than 90% of the arc of turns of the motor.

This would be useful, a constant torque engine.

the long run then helps.probably, according to the 16m\s of the piston, I would then have a top rpm to 4450 - 4500 rpm, but all useful!

useful, but hard!