do not grabk change them with the interpolation....but on the basis of what and how much?I with the formulas I can ricavarmi the time of the injection starting from the old iq es 70 to the es 90's....because actually 100 are so many and you don't need to go that far with a stock engine.
With interpolation, you put the value to 60, and for 80mm3 to tot rail pressure and then put the mm3 that you want to find and it will find the time. An example: x1= 60 y1= 787us x2=80, y2=975 x3=90 y3=.... y3 sar? time equal to the time that you will have to 90mm3.Originally Written by ducati83
do not grab
no excuse then I correct the statement first: what is this interpolation?
I interpolation the use if I want to have the values are scaled based on the maximum value and the minimum....but functions that give me the value as you explained I have not seen or do not know how to use I ...
what you say to me are calculated with an excel sheet by exploiting the formula of injection timing that is on the forum....
With the formula which uses to have the same % of increase from the break point. Example: (root 1600x975)/ 80= 487,5.. Now to 100mm3 will be?: (100x487,5)/rad 1600= 1218,75... Now considering that 100mm3 are the same 80mm3x1,25 if you 975us x1,25 is always 1218,75.
now....I understand...
anyway, if you must do a calculation in percentage to do before....you just need to increase in proportion to 1.24 for each increment of iq...if the calculations are not wrong...but I think of you....
I don't know why, but ? deleted my previous comment in which I put the link to use interpolation. However, if you write a linear interpolation to find the computers.
the comment ? been deleted by me, only that ? going off the connection and I have not had time to write link deleted, please read the rules and the banner of warning.
The only other thing to keep in mind ? that pressure rail are low, you can lengthen the time without consequences smoky why? you end up injected in the exhaust :P
Then multiply by 1.25 is fine but on my map I had to climb gradually for low pressures until you get to 1.25, say, 1000 bar, worth a cloud of smoke in thrust at low revs
The times are to be calculated. If must be calculated for 90mm3 (example) of those must be, nor more nor less. The fumosit? to low you can? then very well to solve in other ways. Just gi? just put the lambda 1.1 for the low that you do not smoke.The only other thing to keep in mind ? that pressure rail are low, you can lengthen the time without consequences smoky why? you end up injected in the exhaust :P
Then multiply by 1.25 is fine but on my map I had to climb gradually for low pressures until you get to 1.25, say, 1000 bar, worth a cloud of smoke in thrust at low revs
No, why? even if the rail ? mappable not ? instant up or down, and not ? question of the lambda, but of injection time too long why? all diesel fuel is properly burned, if you finish the injection ++ 10 degrees after TDC, even if you have air smoke the same why? the combustion ends up in the drain!
Write permission
Quote