for each injector data the multiplicator is applied (parameter, which describes flow-rate), additionally, the parameter, describing reaction time of the injector, is counted.Īt this point, it becomes even more interesting – it is clear, that at least one on the parameters is actually redundant, because the injector flow-rate is with such small technological difference, that grouping, taking in account this parameter, is totally pointless.coding data of injectors really are value, not code (for example, group code).Input of injector data and research of injector correction menu Next step – make sure, that these data are not some kind of a “secret code”, but an analog value, which is described by them.Īs already observed here, the input of incorrect check-sum complicates the creation and restoration of adaptations, but, if the adaptations are already created, the input of any data is possible, using INPA, and no negative indications are observed. If we could group the reaction time (in several groups), the flow-rate is so close to average value, that grouping is totally pointless! 2,56 mg/stk.Īccordingly, the flow-rate scattering comes out around +/-2%, but reaction time: +/-11% 59,1 mJ possible, and the time-describing value: 1,99. Collecting data from quite a significant amount of injectors, we come to conclusion, that there is flow-rate in the area of 56,9. The situation gets more interesting when we start to explore available data from injectors more closely. It look’s that everything is OK – a possible scattering of the parameters is quite wide, so the splitting in groups is necessary.Īdditionally, the manufacturer has made last numbers of the code as “checksum”, grouping conditions are kept in secret – it sounds quite serious. The reaction time of the injector: in the second line.Īccording to INPA, these data can be in area 1,55. Performing elementary mathematical operations, we calculate: average value: 61,9 maximum deviation +/-17%. INPA identifies, that these data could be in area 52,9. Injector flow-rate data: in the first line.
Grouping data are printed on each injector. everybody knows, that the injectors have to be coded after replacement. Let’s start with several interesting issues regarding coding of injectors. As usually, information from the manufacturer – zero, everything described below is a result of research and could differ for different software releases. Several themes will be merged in this post, but it’s necessary, to explain the principles of performance of the engine management system.ĭisclaimer.
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