Piccoloingegnere
Guest
It seems, but it's all very simple. the big problem is to establish the intercapedins for water and the "piste" for air on the monoblock.
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- Thread starter Piccoloingegnere
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- motore progettazione
Piccoloingegnere
Guest
intercooler = -80°c of compressed gas, + turboleg of 30% + 25% return (there are diesel also vm that without the intercooler are much less performing but always available)
on the mitsubishi you didn't understand anything
and on the rods from the drawing to the definition of data with sketch as the pistons it takes me at least 1 week!
on the mitsubishi you didn't understand anything
and on the rods from the drawing to the definition of data with sketch as the pistons it takes me at least 1 week!
Er Presidente
Guest
I'm in the mood and I want to answer you.It seems, but it's all very simple. the big problem is to establish the intercapedins for water and the "piste" for air on the monoblock.
If you think it's simple then it's serious.
you're thinking like you're making a petrol engine, but on a diesel engine, the approach is at least to evaluate.
reduce the diameter of the turbines is not the egg of colombo, they all know (especially to the mistupid) that reduce the diameter of the turbines reduces the lag, but according to you why in a diesel the turbines are large?
Piccoloingegnere
Guest
because diesel exhaust gases are much denser and loads. But also they can have a slight reduction that does not go to create a negative counter-pression and this reduction cannot be attested above 8-10%.idem increase, always do not exceed that threshold.poi are still a kid, that does not make it easy but that still tries to put into practice his knowledge and for this I ask your help.
Er Presidente
Guest
a diesel has a fundamental difference from a gasoline.because diesel exhaust gases are much denser and loads. But also they can have a slight reduction that does not go to create a negative counter-pression and this reduction cannot be attested above 8-10%.idem increase, always do not exceed that threshold.poi are still a kid, that does not make it easy but that still tries to put into practice his knowledge and for this I ask your help.
does not have the butterfly, which leads to a difference in the amount of air in the huge engine.
with the gasoline engine to the minimum the air that enters the motor (and that passes in turbine) is a fraction of that of the maximum regime at full admission (open butterfly).
in the diesel you only change the amount of diesel and the air flow is always at full admission, the ratio between the maximum and the minimum is more or less proportional to the variation of the speed regime (1000 to the minimum 5000 to the maximum), while in the gasoline comes to exceed 1/30.
the engine always works in excess of air and the amount of air that must (may) provide the turbine is of an order of magnitude greater than that of the gasoline of equal capacity.
the lag in the gasoline comes from the fact that when you leave the accelerator "strozzi" the turbine, closing the warrant and you are forced to "download" excess pressure, the turbine "stops" (reduces the turns below 80%) and to make it restart are pains.
in a diesel the phenomenon is less serious, the turbine tends to remain "regime" and always ready.
that is why we "danna" with the diavoleries (variations of geometry etc.) in the turbines of the "benzina".
p.s.: you want to "see the future", make a "diesel" gasoline powered engine with direct injection to controlled detonation, then you have to "invent"!
:
Piccoloingegnere
Guest
it is not possible, except for some particular cases, such as porsche, to adopt it on gasoline if not with stratospheric expenses due to the temperatures.a gasoline arrives to make the turbine work quietly at altitude 1000°c that does not make possible the use of the vgt on gasoline if not with special turbines in the expensive materials for other.in addition, even if working always excess of air this does not mean much ready. There is the 1300 m-jet turbine that works up to 3000 laps (in conjunction with that of 1900 m-jet 150 cv starting from 2500 rpm and therefore in the turns that we most exploit in the city, and in general, up to 2500 c.ca in fact you use a very small turbo!). However on the whirlwinds I do not believe to have big doubts. what I care now is the geometry of the head.
p.s.
modern gasoline, such as valvetronic, thp, multiair, tst and others no longer have butterfly!
p.s.
modern gasoline, such as valvetronic, thp, multiair, tst and others no longer have butterfly!
Onda
Guest
I'm sorry, do you think about the [bleep] sometimes? ?
Hi.
wave
Hi.
wave
stevie
Guest
would be interesting to model the combustion chamber and then perform cfd simulations, did you think about it?
Piccoloingegnere
Guest
Do you know what the problem is? I don't know at all the 3d and even if I possess rhino I never learned to use it.would be interesting to model the combustion chamber and then perform cfd simulations, did you think about it?
Anyway, I think about the [Bleep****a response from the user before!:biggrin:
Er Presidente
Guest
trueMoreover, even if always working in excess of air this does not mean that the diesel turbo is always ready.
diesels normally are.all manufacturers would otherwise opt for large turbochargers.
new-eneration diesels must control the nox emissions that are high precisely for the excess of oxygen.What is the meaning of the jtd tst of the fiat then? There is the 1300 m-jet turbine that works up to 3000 laps (in conjunction with that of 1900 m-jet 150 cv starting from 2500 rpm and therefore in the turns that we most exploit in the city, and in general, up to 2500 c.ca in fact you use a very small turbo!). However on the whirlwinds I do not believe to have big doubts. what I care now is the geometry of the head.
p.s.
modern gasoline, such as valvetronic, thp, multiair, tst and others no longer have butterfly!
limiting the air flow to the low regimes is the solution, but here we go back to the problems of gasoline and serve the variation of flow of the turbo (double stage etc).
p.s.: they don't have the butterfly because they control the airflow by controlling the valves directly, but the problem doesn't change.
p.p.s.: I remain perplexed, I thought it was thought of a self-constructed diesel, if we have to do it euro5 with valve control etc., I have the impression that we have excessive expectations.
And here I stop.
Piccoloingegnere
Guest
but do you know that the citroen puts hot air from the intercooler directly into the fap to keep it higher in temperatures? By doing so, it is always around 350-400° and thanks to the wax solves every problem of regeneration.With a third generation injection of thephi at 2200 bar solves the problems.true
diesels normally are.
new-eneration diesels must control the nox emissions that are high precisely for the excess of oxygen.
limiting the air flow to the low regimes is the solution, but here we go back to the problems of gasoline and serve the variation of flow of the turbo (double stage etc).
p.s.: they don't have the butterfly because they control the airflow by controlling the valves directly, but the problem doesn't change.
p.p.s.: I remain perplexed, I thought it was thought of a self-constructed diesel, if we have to do it euro5 with valve control etc., I have the impression that we have excessive expectations.
And here I stop.
Anyway good night guys and thank you president, I was pleased to talk to you. we feel tomorrow and hope with updates.
Piccoloingegnere
Guest
Anyway, let's go to the sky of the room:
of course heron, with inclination of the valves of 08° central injector (common rail in 2200 bar calibration with 11 injections per cycle [ultimamente la Delphi ha sviluppato questo sistema] :1 pre and 1 post main injections.for valves my choice is relapsed on 2 valves per cylinder.The size of valves you place on day.
The biella are 150mm long - on a 107mm axle. I used a particular geometry in the biellas: flat and reversed profiling - a rare solution, but not too expensive nowadays, used only on the 80's turbo f1s to increase its reliability. http://www.gurneyflap.com/resources/bmw engine2.jpg Here's a kick.
for the distribution I am working on the camshafting. I will knead to find the fasatura of some modern trucks. so I would adopt a sort of vtec for diesel.until 2000 rpm would work a very quiet milling then I would use the following:
raised asp 9.1
bar 8.9
working angles 252°/250°
distribution phase 18°-54° / 51°-15°
calettas 108°
raised pms asp/sca 0.8 / 0.5
game 0.30 / 0.40
always that there are no malfunctions or irregularities.because the objective is the opposite.a motor always present and vigorous.
of course heron, with inclination of the valves of 08° central injector (common rail in 2200 bar calibration with 11 injections per cycle [ultimamente la Delphi ha sviluppato questo sistema] :1 pre and 1 post main injections.for valves my choice is relapsed on 2 valves per cylinder.The size of valves you place on day.
The biella are 150mm long - on a 107mm axle. I used a particular geometry in the biellas: flat and reversed profiling - a rare solution, but not too expensive nowadays, used only on the 80's turbo f1s to increase its reliability. http://www.gurneyflap.com/resources/bmw engine2.jpg Here's a kick.
for the distribution I am working on the camshafting. I will knead to find the fasatura of some modern trucks. so I would adopt a sort of vtec for diesel.until 2000 rpm would work a very quiet milling then I would use the following:
raised asp 9.1
bar 8.9
working angles 252°/250°
distribution phase 18°-54° / 51°-15°
calettas 108°
raised pms asp/sca 0.8 / 0.5
game 0.30 / 0.40
always that there are no malfunctions or irregularities.because the objective is the opposite.a motor always present and vigorous.
MBT
Guest
... I'm very worried. . .
but very much.. .
but very much.. .
Piccoloingegnere
Guest
Why?
stevie
Guest
No school this morning? ? ?
Piccoloingegnere
Guest
No, today and not tomorrow!
myface
Guest
ah now I understand everything!!! as a boy the tachypirin gave those effects...:biggrin:No, today and not tomorrow!
africagia
Guest
we have a genius among us!!
I'm sorry, but if you know all these things (at 17!!) why do you ask for help here? When you get to 18, you will certainly compete with the fiat so much of the engines you build. In short, they'll give their degree without enrolling in college. by curiosity, what school do you frequent? What year are you? at 17 years no one has this knowledge. even if he is passionate, as you say, a 17-year-old can know, at most, the engines as a mechanically unmanaged but not as a mechanical engineer. do not say that you have studied engineering books because to understand something about an engineering book you have to have an engineering base that only at university is acquired.
resemble someone who a few days ago asked a question like yours who unfortunately did not receive any response yet was a mechanical engineer. How small the world is!
I'm sorry, but if you know all these things (at 17!!) why do you ask for help here? When you get to 18, you will certainly compete with the fiat so much of the engines you build. In short, they'll give their degree without enrolling in college. by curiosity, what school do you frequent? What year are you? at 17 years no one has this knowledge. even if he is passionate, as you say, a 17-year-old can know, at most, the engines as a mechanically unmanaged but not as a mechanical engineer. do not say that you have studied engineering books because to understand something about an engineering book you have to have an engineering base that only at university is acquired.
resemble someone who a few days ago asked a question like yours who unfortunately did not receive any response yet was a mechanical engineer. How small the world is!
Piccoloingegnere
Guest
No I'm sorry I'm 17 years old if you want me to give me your msn and I'll show you my face on the cam! I'm really sorry to disappoint you, but at 17 I have these knowledge and others.
Piccoloingegnere
Guest
If you want to give me serious advice otherwise I don't answer. I'm 17 years old and I attend scientific high school. Then I repeat if you want I can prove it. I have no problem... .