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Discussion: change advances

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  1. #1
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    Citazione Originally Written by jovandj Visualizza Messaggio
    I, of course, the increments to the advance does not need to be given to cazzum wisdom well as 1 degree can be harmful, personally, after the advice of jack I moddato advances in the regime 1250 3000 2 degrees you will notice the difference, of course, the machine responds better to spool the turbo, which of course go to lose you retrieve the map with the vgt, for example at 4000 I have about 4 degrees to 80mm3 press rail stock to 1600, with even 0.5 degrees of post PMS and the rest before TDC, now I'm trying to remove a little of advance at low rpm with high IQ to get in better spool the turbo you talk about 0.5 degrees, a bit like the 1.9 140cv-e3 2.0 170cv
    Sincerely would put up the pressure diesel to 1700 bar and remove a little in advance so as to keep 1 degrees Atdc to 4000 rpm and the end of injection at tdc at 4500 rpm, with 0.1 in most of the turbo pressure. Also you can give even more of 80mm3 in the medium regime, coming up to 95mm3 without smoke. Usually I do 90mm3 from the map and a ruler, then from the lambda to what limit.
    With 80mm3 about 3800 rpm I rolled on bapro 170 hp on a 8v with only 0.05 in most of the turbo pressure (1.45-1.5 peak and 1.35 to 4000).

  2. #2
    THE AVERAGE USER
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    The rail pressure bring it almost to the maximum. For you with 1600bar default you arrive as well to 1750. Not ? that increases only to make themselves better. You just need to increase only the prex of the rail, the control unit is autoadatta on almost all of the other parameters, but not on the advance. The advances should be made only by the 3000giri up, cos? you are unable to 'digest' all the diesel fuel injected. Do not forget a factor very important for the 16v...the intersection. Greetings.

  3. #3
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    Citazione Originally Written by easter Visualizza Messaggio
    The rail pressure bring it almost to the maximum. For you with 1600bar default you arrive as well to 1750. Not ? that increases only to make themselves better. You just need to increase only the prex of the rail, the control unit is autoadatta on almost all of the other parameters, but not on the advance. The advances should be made only by the 3000giri up, cos? you are unable to 'digest' all the diesel fuel injected. Do not forget a factor very important for the 16v...the intersection. Greetings.
    The control unit does not autoadatta at all, changing the rail pressure varies that and that's it. The edc16c39, among other things, autoadatta only with respect to lambda, in particular, to match the data detected by the mass air flow sensor with those of the lambda.
    Then you should anticipate only at 3000rpm? According to what rule?
    I always argue that it anticipates where it is needed, that is to say, adjust the injection in order to have a balance between the pressures in the chamber and exhaust temperatures so as to take better advantage of the engine.

  4. #4
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    Citazione Originally Written by SandroMarciano Visualizza Messaggio
    The control unit does not autoadatta at all, changing the rail pressure varies that and that's it. The edc16c39, among other things, autoadatta only with respect to lambda, in particular, to match the data detected by the mass air flow sensor with those of the lambda.
    Then you should anticipate only at 3000rpm? According to what rule?
    I always argue that it anticipates where it is needed, that is to say, adjust the injection in order to have a balance between the pressures in the chamber and exhaust temperatures so as to take better advantage of the engine.
    it will only fit on the lambda...and you said nothing! what is this adaptation? which parameters change in the regular course of the lambda?

    ...? clear that it anticipates where you need it! That means the pressure in the room? ....the exhaust temperature ? definitely involved with the change in advance...but it anticipates for other reasons...for problems that begin a regimen of about 3000giri, in relation to the quantity? of diesel fuel(for example). Returning to the variation of the temperature in relation to a variation of the step...not to confuse the diesel with the petrol.

  5. #5
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    Citazione Originally Written by easter Visualizza Messaggio
    Sorry, but harmful x what? If the high pressure pump has an operating range of up to 1800bar why? it should break? The same goes for the injectors.

    Chiaritemi a doubt...but what are the advances? What are they for?
    the hp pump has specific and up to 1800, but it surely increases a lot of wear to the pressures that you speak of. Together they will also increase the inefficiencies, and thus the power consumption, so that pressure ? inevitable work with l? where the injection time becomes too long, but this one has with maps and thrusts and components are often increased (especially TC).

    Citazione Originally Written by easter Visualizza Messaggio
    Also the amount? of fuel and other things. This from the edc16.
    absolutely no, by changing the p.rail only changes the pressure, and then the ecu uses a longer time? short to inject the same fuel.

    Citazione Originally Written by easter Visualizza Messaggio
    it will only fit on the lambda...and you said nothing! what is this adaptation? which parameters change in the regular course of the lambda?

    ...? clear that it anticipates where you need it! That means the pressure in the room? ....the exhaust temperature ? definitely involved with the change in advance...but it anticipates for other reasons...for problems that begin a regimen of about 3000giri, in relation to the quantity? of diesel fuel(for example). Returning to the variation of the temperature in relation to a variation of the step...not to confuse the diesel with the petrol.
    1 - the lambda is autoadatta to have values that are coincident between mass air flow sensor and oxygen remaining in the exhaust gas, then ? an adjustment that depends on the component, from its internal features, it does not vary by changing the map, in fact, that procedure must be done if you replace the mass air flow sensor or lambda probe.

    2 - pressure in the room means the maximum pressure reached in the combustion chamber, which allows one to move the piston.

    3 - why you should anticipate only from 3000rpm?

    4 - the temperature in the room (along with the pressures) are also a problem of diesel engines with high specific power.

  6. #6
    THE AVERAGE USER
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    Citazione Originally Written by easter Visualizza Messaggio
    The rail pressure bring it almost to the maximum. For you with 1600bar default you arrive as well to 1750. Not ? that increases only to make themselves better. You just need to increase only the prex of the rail, the control unit is autoadatta on almost all of the other parameters, but not on the advance. The advances should be made only by the 3000giri up, cos? you are unable to 'digest' all the diesel fuel injected. Do not forget a factor very important for the 16v...the intersection. Greetings.
    I'm sorry but I do not agree. First of all raise the rail to 1750 bar, especially on standard maps, I find it to be only harmful to the pump and the injectors.
    Second, the advances, if you know what you are doing, you can make completely, the engine will clearly improve in reattivit? and consumption.

  7. #7
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    Citazione Originally Written by jacktheripper2 Visualizza Messaggio
    I'm sorry but I do not agree. First of all raise the rail to 1750 bar, especially on standard maps, I find it to be only harmful to the pump and the injectors.
    Second, the advances, if you know what you are doing, you can make completely, the engine will clearly improve in reattivit? and consumption.
    Sorry, but harmful x what? If the high pressure pump has an operating range of up to 1800bar why? it should break? The same goes for the injectors.

    Chiaritemi a doubt...but what are the advances? What are they for?

  8. #8
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    Raising the rail to only change the injection time which is shortened a bit. But everything else remains exactly the same.

  9. #9
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    Citazione Originally Written by jacktheripper2 Visualizza Messaggio
    Raising the rail to only change the injection time which is shortened a bit. But everything else remains exactly the same.
    Also the amount? of fuel and other things. This from the edc16.

  10. #10
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    Citazione Originally Written by easter Visualizza Messaggio
    Also the amount? of fuel and other things. This from the edc16.
    reading your responses, including the following in your message that you quoted, I know that something don't you ? clear. First of all, raising the pressure of fuel does not increase the amount? diesel fuel is injected, because it decreases the time of injection and the quantity? diesel fuel therefore remains unchanged, we are not talking about an add-on module that tricks the pressure sensor diesel, and then the ecu unconsciously alzer? the pressure of fuel without then abbasssare the time of the injection, and then, in that case, the amount? of diesel fuel increases.
    The advance is given to keep egt are not too high, however, and to make better use of the surplus of diesel injected.
    The pressure in the chamber ? the pressure that is created in the combustion chamber for each cycle of the engine, and this ? very much influenced by the advance used, by the pressure from the turbo and from the amount? diesel fuel is injected.

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