Hello, this ? the second time I write the message why? the phone I got crazy, anyway thanks for the clarification, but don't think that changes much why? when I do the accounts arrotondo always.... The fact of the break for the rpm to me ? seemed appropriate, why? in this way, the machine starts to make a bit of smoke when I'm happy and in this way if to lunge a little foot at the low does the toxic cloud
however, by mounting the pressure gauge I noticed that the turbo pressure rises to 1.6, and then down to 1.3 and after a while goes back to 1.5.... C'? a way to make it stay stable at 1.5 since the thrust up to when I leave? I tried to change the maps of the pieburg but since I don't know very well how it works I can not get a stable pressure, also while taking closed the pieburg at low revs I can't seem to get those to 0.5 bar who serve me... usually I reach 0.5 at around 1750 - 1800 rpm I would like to get to at least 1500 rpm you can?? Thanks to all for the collaboration slowly beginning to understand how it works
I know a little of electronics, still less of mechanical... but if I had to guess, I think so? down (1500 rpm), the turbine does not push why? CAN NOT push... in the sense that there are variables, geometric and volumetric for which the turbine is not able to go in the spool to those schemes then you can "force" as you think the management of geometry, but they can't do? never.Originally Written by fabio
however, by mounting the pressure gauge I noticed that the turbo pressure rises to 1.6, and then down to 1.3 and after a while goes back to 1.5.... C'? a way to make it stay stable at 1.5 since the thrust up to when I leave? I tried to change the maps of the pieburg but since I don't know very well how it works I can not get a stable pressure, also while taking closed the pieburg at low revs I can't seem to get those to 0.5 bar who serve me... usually I reach 0.5 at around 1750 - 1800 rpm I would like to get to at least 1500 rpm you can?? Thanks to all for the collaboration slowly beginning to understand how it works
including maps of the geometry touches ? it should be 3. If I understand it, a ? the one that is called in the transient (the gears), the one in the guide "ECO", and one with the guide "SPORT"
I believe that the ECU to choose based on the rate which varies the TPS.
the or of the pressure may be attributable to other factors.
I would check in sequence :
- state "nesting" of the actuator of the geometry on the turbine (with the time gets stuck or runs bad...) (my, after 200k miles I had to unlock to the sound of svitol and persuasion with a screwdriver on the bar)
- clogging of the pressure sensor on the intake manifold (after the famous 200k km, of which 100km facts with the EGR active was jam-PACKED with mondezza, I used the cleaner for the brakes and ? back new)
- the state of operation of the valve pierburg and complete check of the system of generation of the void (you should have ~ -0.9 bar on the pump, -0.7 in the box of the vacuum on the actuator, at a minimum you should read between -0.45 and -0.55) (to do these tests I have taken a common vacuum gauge from 15euro and fittings/tubes and pipes suitable I went to join in the various parts of the circuit).
- the state of wear of the pipes to the air, especially the one v? from the turbine to the IC (mine was very stressed out and had a couple of points to considerable abrasion due to rubbing with that damn screw protruding on the casing of the gearbox). The tubes with the time dilate and become very elastic, this increases the effect of the lung which creates some scratch**** the centrlina in the follow faithfully the various pressure curves since it introduces a kind of inter-modulation between the generation and reading of the turbocharger)
I had problems adjusting the pressure also from the map ORI, only after these controls, I was able to get it with the pi? stable.
loads the map ori, and see if you notice all this variability? as with the modified parts from them.
As always super accurate, prover? to do these tests... However the maps that I edit are 3 and I try to do on all three of the same changes, even if a ? pi? "short" and two "long" does not have the same values... But do you by chance know what are the values on the z-axis of the maps? Thanks
I've always interpreted (and the damos I d? reason) as the % of opening of the actuator geometry, of course, this actuator are connected directly to the "fins" the furniture of the turbine.
parts from the assumption that the system ? designed to have, in the absence of depression of the actuator, or in case of malfunction of the ecu, the 0%. at 0%, the angle of incidence of the vanes ? that does not raise the pressure, then, going backwards, with the reasoning, pi values? the top of the Z-axis corresponds to a more "increase" pressure...
in fact, if you notice, at low revs should be around 70% (the maximum value of the map) then we will try to raise the pressure pi? quickly as possible, cos? to help the spool up...
of course, the map also takes into account the amount? diesel fuel is injected.
most diesel fuel is detonated, the higher? the pressure of the exhaust gases output from the collectors, then, to equal? % we will have a force from acting on the blades gradually increases with the increase of the IQ.
I usually, I limit myself to the limit, using a linear forecast weighed on the last values in the map, at the bp adapted to the new IQ, cos? to avoid peaks and strange.
in fact, from the log, I don't have PICCI as all reports, but the pressure, if compared with the "desired" ? always aligned +/- 20 pts.
If I hadn't made these changes, I had the classic peak in the opening, and then collapse and bounce around the set point.
The what not ? simple and if you think you change the turbine, so prepare for a long session of tests to adapt this map to the new geometry.
... oh my God...
replace PICCI with SPIKESthe time of f? feel
(mod... please put the EDIT button)
Then where I read 75 % (the maximum value of the map) I could set it to 100% cos? to go before in the spool? How do you do the linear forecast? I was never good at accounts XD
you have a 75 ? but what hw/sw you have ? I am in the map pi? 70 I do not have...
use an excel function, winols I copy the whole map and then use the function "FORECAST" by giving the known values of the bp and the values associated with it, line by line, I calculate the new values for the new IQ. now ? later, tomorrow, I make a multiplication table excel cos? understand better how it works...
(I stress that maybe my ? a system of cabbage...? up to now, has served me well...)
ha, sorry, I have not answered the question
I have never tried to? I think 100% is too much, in the sense that the angle of incidence ? chosen at random.
I give you an example, if you are a fan from the computer and try to blow on the air with the compressor, you'll see that the various regimes of rotation, you have a small window in which the air and lands on the blades ? effective for the rotation.
the same reasoning v? applied to the turbine... if you put 100 in, probably, exceed the limit of this "window" useful, for a given rotational speed/IQ having an opposite behavior.
Assumiti any risks and experiment
I understand what you mean.... Maybe I try to increase slowly, hoping not to break anything... However, look for the table with anxiety why? do not know how to use winols and it would be a chore to keep track of the map on Excel.. Thanks
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