What is the difference between NOXEM NOx emulator and OEM NOx sensor? ī) both in small load and large load vibration of engine will be present (because in these cases DME don’t carry out the individual adaptations), there is a huge possibility to “catch”misfire and error messages about it both in Homogeneous and Stratified charge mode, error messages regarding trim problems: lean or rich mixture, error messages regarding Lambda probes etc. It’s critically important to register these data in DME.Why?Ī) the maximum offset adaptation range is narrowed in idle run mode, and, although all cylinders as if are balanced, there is a huge possibility to “catch” error messages about inability to maintain the fuel mixture, error messages regarding CO catalytic converters etc. This time we will talk only about differences.Įach injector has been measured in factory by two flow curve points (by short and by infinitely long injection time),and measurements are recorded on injector’s body.Įxact data calibration format is not available – it’s producers secret.Īccording to directions, we can assume, that:ĢXX: reaction time (injector offset correction data) measurements ĥXX: flow rate correction data (multiplicative correction).Īccording to descriptions of error messages for MSD80/81/87 control unit, data coding of injector productivity should be in following limitations: Piezoelectric injectors has been chosen because of instant reaction, which allows to execute multi-point (several injection cycles) injection mode. N43/N53/N54 and other direct injection engines uses not “classical” (coil – electromagnetic), but piezoelectric (material, which changes size, if affected by voltage) injectors.
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