MONITORING METHOD TO MONITOR THE BUILT UP OF OBSTRUCTING COATINGS DUE TO COKING IN SPRAYHOLES OF A FUEL INJECTOR JET NOZZLE, COMPENSATION METHOD TO COMPENSATE NEGATIVE EFFECTS OF THESE OBSTRUCTING COATINGS AND ELECTRONIC CONTROL UNIT FOR A COMBUSTION ENGINE

The invention relates to a monitoring method to monitor the built up of obstructing coatings (30) due to coking in sprayholes (14) of a fuel injector jet nozzle (12), wherein an average needle opening time delay of an injector needle (16) to open and close the sprayholes (14) is calculated and compa...

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Bibliographische Detailangaben
Hauptverfasser:	Radeczky, Janos, Scheid, Matthias, Dian, Vincent
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a monitoring method to monitor the built up of obstructing coatings (30) due to coking in sprayholes (14) of a fuel injector jet nozzle (12), wherein an average needle opening time delay of an injector needle (16) to open and close the sprayholes (14) is calculated and compared with individual needle opening time delays of the injector needles (16) of each single fuel injector jet nozzle (12). Further, the invention relates to a compensation method to compensate negative effects due to the obstructing coatings (30) in the sprayholes (14) and to an electronic control unit (24) which is able to carry out the monitoring method and/or the compensation method.