MARELLI MJET impariamola!

Hi guys..I open this post in order to know better the Marelli Multijet.
To begin we will start with a 70hp, then we will look at the 75 and the 90's (very similar).
The attached file ? a Lancia Ypsilon 1.3 multijet 70cv, of course.
To begin, let's start with the maps in the ecm shows us, trying to explain the meaning and conversion factors.

To begin, we analyze the maps pedal calls from the ecm TORQUE LIMITER 2
these two maps are precisely the dw of the map and express request of the couple:
x=rpm (here are actual rpm, without the need of factor conv)
y=percentage of gas pedal (factor 0.0004)
z=torque required (factor 0.023438)

from this map and the following handles the request torque is made to the engine, the nuances? ? that there are points in the negative, unfortunately I disconosco the reason.

I f? very pleased, Mario, talk about this ecu, in particular, I've always wanted to learn more so evvero that I wanted to open I a tread similar maybe even the ecu gasoline saw that the sconosco almost totally, but I think that I would not have had the success that get you.... anyway, congratulations... and I'm listening with the ears well open.
for the study in if I think that, in marelli use any illegal substance because for me, these maps must be read to the contrary of that? not from left to right, but vice versa....? then the areas of the negative that way for me gets a totally different meaning....

Quote:

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Originally Written by munro

I f? very pleased, Mario, talk about this ecu, in particular, I've always wanted to learn more so evvero that I wanted to open I a tread similar maybe even the ecu gasoline saw that the sconosco almost totally, but I think that I would not have had the success that get you.... anyway, congratulations... and I'm listening with the ears well open.
for the study in if I think that, in marelli use any illegal substance because for me, these maps must be read to the contrary of that? not from left to right, but vice versa....? then the areas of the negative that way for me gets a totally different meaning....

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Thanks for the confidence ahhahaha:D
anyway, for the points in the negative, I had a thousand ideas: neutralize the first part of the pedal at high rpm, or facilitate the return to a minimum precisely at high rpm...but...I am skeptical..do you have some other idea?ah..I agree on the topic of drugs;)

if you read the map, starting from the right you will notice that it has the classic shape of a map of the pedal edc16 with requests to pair very high in areas of low rpm and % of pedal, which must then be gradually climb to the increase of both factors in the axis....
those areas in the negative until I watched them in the wrong direction, I thought that they were "areas of cutt-off" but I now believe that to be a fix already? active in the map on the pedal itself...what?...the ecu through the areas in the negative autocorregge the DW and the equipment? torque when it is below a certain threshold...

just for the sake of completeness of info maps pedal are 8x16...
then each curve (8) ? relative to the % of the pedal...
the 16 steps instead of every turn are related to the Rpm...
but for me, they are the opposite of how ecm them represents...
where we read, "100% load and 5700 rpm" to me there should be 13% load and 85rpm..

Hello, let us start, therefore, the torque limiter(2) as he calls it ecm ? a torque limiter effective but bens? the case of the maps fuel temperature function air injection ( f(t.air))with a map similar, while immediately after you find the jelly injection correction in function of air temperature (injection correction f(t.air)), on the driver of the 70cv ecm you takes them as protectors, but are not. the number two (2) next to the written torque limiter is to indicate that there are two maps in the main map and similar..

wrong backgroop....
those indicated by Mario are just maps pedal....
that I know of in the marelli does not c'? no map diesel depending on the temp the air and its correction...
the map that ecm's called torque limiter*2 in reality ? a torque limiter as a function of engine temp...

http://www.professionalchiptuning.ne...relli-1-3-mjtd

qu? I explain everything that I was able to understand about 1.3 mjtd

there was a document in the English language, which explained some of the maps of the 1.3 but I never managed to find it,one of the edc15 and 16 instead ..

someone knows something?

I c'? I...if you want to step...

If you can do me a favor

of course I can but I do not believe whatever you say....you f? only see a p? maps with the conversion factors....
stuff that you already have? posted too..***** s, you ride him without problems....

So..***** and I said the maps pedal are requiring torque in nm...and as noted by munro and rpm increases, the same percentage of pedal, the demand decreases...so this map should be read to the contrary..

that is, the third line corresponds to 10% of the pedal, the various columns, however, are read from right to left...i.e. the low speed to the right, the high rpm on the left...

Quote:

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Originally Written by munro

wrong backgroop....
those indicated by Mario are just maps pedal....
that I know of in the marelli does not c'? no map diesel depending on the temp the air and its correction...
the map that ecm's called torque limiter*2 in reality ? a torque limiter as a function of engine temp...

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The map in question 6jf a2l winols with affine and the next map-injection correction f(t air):

Attachment 5933

the same map on the point 75hp driver ecm up to date:

Attachment 5934

the images are too small you can't see anything...
and still, even with those we call mappepedale are maps correction diesel fuel as a function of tem p air...the "true" maps pedal where they are and what they are??

I agree with munro..the images are too small...and the maps pedal where are they?and then, this elusive damos that you have..? reliable?

Quote:

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Originally Written by mariodarkblue

I agree with munro..the images are too small...and the maps pedal where are they?and then, this elusive damos that you have..? reliable?

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Hello mariodarkblue the negative points you should not touch them; you have to work a lot on the split and the pair carefully to get the best results on these engines

infinity...can you be more kiaro support? ? a tutorial to learn...we do not give info to the met?;)
xk? the points in the negative must not be touched?explanation?

I must give credit to Mario in this tread before you would like to understand the various maps are what they are and how to interpret....
then maybe eventually you can? also discuss which mod is better than another and why?......
at this time we are discussing about what are actually maps pedal......
you know infinityecu??

Quote:

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Originally Written by munro

I must give credit to Mario in this tread before you would like to understand the various maps are what they are and how to interpret....
then maybe eventually you can? also discuss which mod is better than another and why?......
at this time we are discussing about what are actually maps pedal......
you know infinityecu??

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The map of pedal ? in the torque limiter of this address 090886

Quote:

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Originally Written by mariodarkblue

infinity...can you be more kiaro support? ? a tutorial to learn...we do not give info to the met?;)
xk? the points in the negative must not be touched?explanation?

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The negative points must not be touched, precisely why? are not values increase, you may have problems of recovery and limitation turns on the accelerator etc.....

Sure, that address??

the map ends at 06FFFF in 8-bit....
or if you want to 06FFFE 16-bit.....
your address is not ? this..if then we seek 009886 we end up in that part of the map dedicated to the sw.....

Quote:

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Originally Written by infinityecu

The negative points must not be touched, precisely why? are not values increase, you may have problems of recovery and limitation turns on the accelerator etc.....

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sorry infinity...just to understand...but if you say that the pedal map st? from another part, because dichese touch points in the negative in the maps that do not have maps of the pedal you can? have recovry or limitation of the laps??

vabb? I wrote a p? in a hurry but I think he understood.... if you do not ? the map of pedal because by touching the points in the negative you have problems limiting revs on the accelerator??

Quote:

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Originally Written by mariodarkblue

Sure, that address??

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I would not have posted anything if nn were safe anyway, test the map and clarify any doubts

Quote:

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Originally Written by munro

vabb? I wrote a p? in a hurry but I think he understood.... if you do not ? the map of pedal because by touching the points in the negative you have problems limiting revs on the accelerator??

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Munro negative points if they are not touched anything does not mean that in order to act on the map the pedal you have to touch them try to make a map, even if you maybe yourself, you realize diquanto I told you

Ok..we're talking about air...maps pedal that are to addresses that do NOT EXIST and points in the map, and negative (that do not have maps of the pedals according to you) that modified damage error do not know why?...

here are the pictures:

The screen then those would be corrections diesel?then, given the conversion factors of the axes and of the map...and then map the pedal where would it be?

I can't see the screen for? that address ? valid I forgot to say with winols

Quote:

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Originally Written by Backgroop

here are the pictures:

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With ecm, the map pedal if I'm not mistaken ? given by the torque limiter 2

Maps foot pedal, and are those of the second screen in the first screen of munro ce n'? only a...

I have not posted screen... however if you look at the maps in winols you realize that you do not have maps of the pedal, but the sw calls engine injection protection in F t cool....
and as a p? English I think I know it means protection injection engine as a function of engine temp(coolant)
then, and a torque limiter or a fuel injection diesel fuel, call it what you like as a function of engine temp.....
c'? also another limiter diesel-torque as a function of temp diesel....
the map of screen backgroop on the ecm of the Gp 75hp ? always map the pedal that I and Mario continiuamo to say that they are those of the screen posted by Mario....

however, if you wish to remove doubts about what you call the maps pedal....just that in the axis where you think you see the percentage of pedal you convert the value in the axis 0,004 the conversion factor just to see the correct percentage and see what jumps out.....
if the accounts do not return... return to convert the same value to 0.5, and magically you will see the temperature in the axis....

Guys you must excuse Me but I correct myself, tonight by examining well the Damos I realized that I have the wrong map, the map the pedal and what you say, I am convinced why? uploading the file to a point 75hp on ecm gave me also maps diesel, I rimangio all that I said in the earlier posting the complete map and the conversion methods;

on the X-axis we have the turns as gi? said by you, displayed in real without applying conversions
on the y-axis we have the pedal Position % filtered with a conversion value of 0,004000
on the z-axis we have N*m ( cio? the couple that referred to the map TrqPropReqTOff ) conversion value 0,023438

the maps are the main and the similar as the knobs on the pedal are 2 (main and secondary)

for me it's not ? nothing happened...quiet backgroop...the most important thing ? agree on the particolait? this ecu....
because gi? ? a p? tricky of his.....

hahahha okkk don't worry...luckily..the hell!!there I was losing the view:D
Anyway, why? there are those points in the negative? to "neutralize" the first % of the pedal at high speed?to favour the return to a minimum at high speed?

This is the map in question, as is represented in the damos:



This and 3d:



the values do not need to be read in contrast to the negative points, as it claims Munro serve to make a kind of cut-off in the release phase, I noticed that changing the drive remains slightly accelerated after a sgassata at full load

exactly...so..here is need to encourage the return to a minimum...but, so? for example, at 4500 rpm, not the avr? the request for the first couple of % of the pedal...

very strange the fact that the maps pedal is not read to the contrary...
from the link sportknight, it is evident that both the torque limiters classic that the timing inj is read to the contrary...
therefore, logically speaking ? looking at the shape of the map from right to left, the shape is very similar to a DW of a edc16c......
to address the negative points...in the screen of the winols read: pedal position %(percentage) filtered/Nm...
I rest the idea that ? a correction in the map on its output....i.e. if, for example, the last break point ? 256nm(random numbers)
the ecu interpolates or better subtracts the negative value to a positive value for a correction....

Murno you are right and I am confused why? it seemed to me your avatar...

Quote:

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Originally Written by mariodarkblue

exactly...so..here is need to encourage the return to a minimum...but, so? for example, at 4500 rpm, not the avr? the request for the first couple of % of the pedal...

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Judging from the first appearance it seems that both cos?, but according to me comes into play well as the speed? of the car, in fact on the map says:
conversion method (Eng. Speed proc. - Copy of rpmf for TB task ,pedal Position % filtered)/ N*m