View The Full Version : Help to decipher maps diesel land rover Td5
A greeting to all,
I would try starting with the order, posting some maps, the map data are "right" in the sense that the indices of the row and column, as well as? the size of the table, are at the head of the block of data contained in the memory, the addresses of the heads of the blocks are located in a table contained in the same file to the address 0x1CEFE (referring to the entire file of 256k content in the flash of the ecu) the addresses in this table will vary from one firmware version to another (defender, discovery, as well as? several years of production)? you keep positionally equal, the cio? having 2 of these tables from 2 stations in different versions, taking the first address and the first address of the other, which are usually different between them, if you go to the corresponding addresses are 2 tables that are identical in both size and the indexes for the values, then do the same thing.
My "problem" ? understand what these tables, and most of all, what indicate the indexes, below I'm attaching some pictures of these tables maps that I assume have been deciphered, but I have not very clear the meaning of the axes.
this table manages the egr, and I know that by putting all the values to 16000 disables the functionality? (but I don't know what are the values on the axes)
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these two tables if you vary the behavior of the engine, respectively, with the gearbox in a range of fast (Hi) or low (Low), the control unit knows the gear reducer through a contact on the gearbox itself, I have seen that variandole you vary the performance, but I don't know what to do, they would seem to limit values to which the engine is coming, a kind of limiter. there are 2 pictures of the Hi why? in only 1 I couldn't put all of the values in the table.
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I have to write another message, why? I mistakenly sent the message before temrinarlo...
these two tables if you vary the response of the accelerator pedal, in the sense that it will change the values you have a pedal more? or less sensitive? does not increase anything ****s performance, only changes the way the engine delivers power to equality? pressure of the pedal, are 2 why? the control unit reveals if the gearbox ? in a range of slow or fast, and on the basis of there? to change the behaviour of the pedal (it happens even in the source)
For? also, I do not understand the values on the axes.... I sense that they are the engine rpm on the lines, and the percentage of the pressure of the pedal on the columns, but I'm not sure....
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This other table (really? 4 are very similar, I attach only one, but if needed I also have the other 3), instead, influence significantly the behavior of the engine, by increasing the values you get more performance, but if touched excessively also increases the fumosit?, here for? I do not understand the values on the axes, I assume that on the rows there are the engine rpm, but on the y-axis I don't know....
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I thank anyone who is willing to give me a hand to understand, I'm not a mapper (pass the sick temrine) for the profession to make money, I do it for passion and to understand how they work, as well as? to be able to hack on this controller for a racing engine...
Greeting
Anyone that can help me, I dispace that the attached images are not visible to those who have less of 80messaggi, may be useful also to those who, like me, doesn't it ? arrived at the threshold, but maybe she would have the ability? - -thanks for help me, tonight I try to move some of the tables on a text format, as well? maybe you can't see anything...
Greeting
magi1984
16-05-2013, 14:31
the sample file ? what did you put in the other thread?
let's start with the EGR map, the first...the aces are definitely the turns and then not?.
the 3 successive images are torque limiters, limit the torque of the motor according to the number of turns. if you split the data in the table to 0.1 you will get the value of the torque, as 4250/0.1 =425nm
on the accelerator pedal as you say you have RPM and pedal position, also in this case, divide the values in the table to 0.1, and you will get the required torque on the basis of speed and pedal position
the 4 maps are very similar to the time of the injection, the axis are rpm and according to me the deal? of fuel injected. in the table you have the value in milliseconds of the time of opening the injectors
of course, pi? increases in pi values? the injectors are opened by injecting diesel fuel for the pi? time. if you misjudge it, the car smokes why? inject diesel even when you should not pi? it
Thanks Magi for giving me a hand, I have a bit to lighten the ideas :)
On the table of the pedal, therefore, should always be the couples request, from us? I gather that the value of "common denominator" for the ecu is precisely the required torque?
There are other tables that in some way are decrypted, tonight I try to post them also :)
Then a strange curiosity?, this unit also manages a modulator wastegate, you have a vague idea of what kind of table should I look for to find it?
p.s. Is the file ? what I put in the other discussion, if you need him back here.
Greeting
magi1984
17-05-2013, 00:08
no you do not need to say here, it was to understand which file we were talking about
Then, I try to continue in the exploration :)
there are 2 tables case (size 1x2) and exactly the same, I put only 1 for comfort?, I don't understand what to do, even if the value of 740 to me looks a lot like the idling speed of the engine, the regime that in the case of the temperature is very cold can? to climb, but I don't know if the 1000 ? the maximum value that can? climb.... or are tuttaltra what?!
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This table instead ? dimensionally equal to those of the accelerator pedal, it has the same indexes on the asssi, but the values are different, I don't know if it is possible, but may be connected to the IDLE SPEED ERROR?
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Now, however, the tables that I can not figure out for nothing.... I know that they somehow influence the performance, but I infer solely from the fact that among the myriad of maps that I've found, made by professionals (mainly british) these tables, and others, the times are changed.....
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the other 2 mppe also misunderstood, like the 3 previous
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While this table, I think goes to handle the pressure of the turbo, he would return with the data written in the other discossione for? I can't understand how "works", to me it would seem possible that the indices of the row is the engine rpm, but the column does not understand them....
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Thanks for the help :) :)
Greeting
St? trying to decipher these maps, but for now, I have not done very well, I have to? understood that the two tables tiny 1x2 are the minimum, in particular, the first value ? the "maximum" at least that is the value to which the controller to the pi? accelerates the motor if the temperature of the liquid cooling ? VERY low, whereas the second one ? the minimum "normal"; they are why? as I imagined vary between normal speed and reduced
Greeting
magi1984
21-05-2013, 08:24
? hard to help you looking only at the screen
if you can mail ori and mod that let's take a look...
PS: ori and mod in a format readable by the common sw tuning so you can see the maps in 2d
mm help, I'm a girl ignorant of acronyms.... the file ori and mod what would it be? I the file I posted in the other discussion I open it with winols, the only thing ? there are the damos to understand what are the tables, if I am not mistaken, I have attached a file .map for? the other not ? a .bin with a file extension renamed, to open it in winols if I am not mistaken, the change of the extension and just....
Otherwise tell me what you need to place the files in the entire memory of the control unit, I have it in binary format ? of a defender, but next to some diversity? are similar, otherwise I find also that the discovery, if it can? be helpful... I also have the contents of a second memory of the control unit, which should contain the codes of the injectors, and the errors logged by the ecu...
Excuse me for my ignorance, but as we are not an expert in the field :(
thanks again for the help :)
Greeting
I try, if I felt good the ori are the original files of the control unit, while the mods are changed, now I'm attaching both the mod that ori defender td5 euro3, with egr valve and the ilt, I think you can view it with any program, I have them open with winols, the part of the map starts at the address 0x19010 starting from the beginning of the file, all that c'? above ? the firmware...
here there are two files, the ori ? Defender Td5 E3, while the mod ? Def89V0 (file made by me to test some of the behavior of the tables)
Greeting
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