Opinion the map alfa romeo GT 1.9 JTDM

[jovandj]

The times I calculated by t inj 90 = t inj 80+ (tinj 80 - tinj 60 /2), the map turbo you intend to rescale the last bp of 90 mm3 of fuel? Thanks for everything

[jovandj]

there are errors after the second limiter, diesel, definitely made with the mouse, check the differences, the limiter of diesel as a function of the temp of the water I don't like how you did it, for you it's well already from the original one because in the optimal conditions, limits 110mm3, have adequate maps turbo personally, but still uses the last value for the values of mm3 additional then it may be fine, and the timing of fuel injection if you riscali you have to give a correct value, so are increased in proportion growing on, according to me is not good mind you limitavi to deceive the map, down payments, I would do it by calculating the pms to find the advance the best, even only a degree in that definitely not the fara bad, the turbo I don't know how you have changed ? strange, rail you have not touched ok to be a pleasure to me, to maps time you load a sheet done by me, which tells you how to calcolarmi for injectors 150hp with the factor of "charge download condenstatori/time of opening of the needle" to add ? a calculator on sheet exel

in fact, it is the limiter, I made a mistake of a mouse thanks to have noticed it, the other 2 limiter in fact, reviewing with winols could stay stock, thanks again I make the corrections and post the new mod again thanks for everything

[tidus1985]

then, look at the file exel, every step of the process pressure to a fixed number to be added to the injection time real ? the time it takes the electronics of the transistor and condenstaori and the mechanics and then the needle to do the job, if it were only for the electronics would always be the same, but if you know how to work an injector you know that he in the moment of the opening has the same pressure in the chamber above the needle and on the one below, when requesting to open the solenoid aprela vent valve of the upper chamber of the cylinder tigliendo the pressure, so the pressure on the lower chamber of the needle push it to the top and this opens the injector, by this evinci more ? high pressure faster will be the time of mechanical opening.

then on the table, take the time to 1000 bar, and 20 mm3 that ? 552 us, we take away the "Time of opening the needle" and we multiply the value to 5 to find the 100mm3, then (552-320)x5=1160, now here riaggiungiamo the time of opening 1160+320) 1480us, and we see from the table if he returns, and we see that returns perfectly, it can differ from the map of max a dozen of us but it is already too much. so the calculations are accurate, I also have the sheet for the 120cv 8v I made them I

with regard to the map turbo, I say to you to increase the maximum 100mbar, reaches 120mbar for the moments in which you think that it takes more but already so you will have an effective pressure peak of 1.6 bar, cosniglio always a log to monitor turbo pressure, although in my experience the gt1749v/vm are pretty tough, but c ? even those who do not think so , it is also very lucky, mine has done 35000 miles with fixed at 1.6 bar, some pccata a lthough a1.9 bar when I was pierburg faulty and even the small amount of play in the shaft

[jovandj]

meanwhile, I thank you for the Excel sheet I am trying to get him to calculate the timing inj but the accounts do not come back I see discrepancies also 100 us, according to me it is necessary to know the time of opening pins for mine, which perhaps differ somewhere, in the meantime, now I try to get them to calculate it and see what comes out, because by changing the values of 10 mm3 up to 20 are exact perfect 20 begins to unpack a lot

[tidus1985]

I calculated from the maps times a 1.9 jtdm150cv E4 with a dpf of a 159 2009

instead, it switches back perfectly, take your map, 1300 bar 80mm3 we 1089 us ok?
subtract the value of the time of opening the needle of my table on the 1300 bar ? of 297us, then 1089-297=792, this ? the actual time of injection for 80mm3, let us divide it by 8 to find 10mm3, 792/8=99us, now there risommiamo the time of opening the needle of my table on the 1300 bar ? of 297us ( same as before of course) and is 396 us, we see the map and look at some of you the value ? 395

You are not sure? we do another test, 1600 bar-80mm3 ---> 968us, sottraimao our fixed value in my sheet exel to 1600 bar ? 275 ? there is 968-275= 693, now we want to find that I know 15mm3? we 693/8= 86.6 us time for 10mm3,now we divide this value x10, and then multiply x15 then (86.6/10)x15=129.9 us and we riaggiungiamo the value previously removed the cio? the fixed value in my sheet exel to 1600 bar ? 275 hence 129.9+275=404.9 us, we see on the map and ? 400us, I would say that 4us margin there can be no?

[jovandj]

place a correction following the advice of the good tidus that thank you very much, I just have to make some correction on the advance should go...those who have a look?

[jovandj]

the limiter of diesel fuel as a function of the temp of the water I don't like the way you did, for you goes well already from the original one because in the optimal conditions limits 110mm3,

sorry tidus if you speak of the limiter to the address 1cf426 is not a function of the TH2O but as a function of Temp Diesel if I'm not mistaken..

[tidus1985]

you already sorry my mistake many mape to memory something escapes me

[jovandj]

that was slightly retouched because I saw it on the winols that the limitation began already at 80 C temperature Diesel then I preferred to turn it up

[tidus1985]

the seosnroe should be before raile of the high pressure pump, in short, before the diesel reaches 100? without being heated actively we want !