Method for determining a correction value for a fuel metering of a fuel injector

A method is described for determining a correction value for a fuel metering of a fuel injector, in which fuel is injected from a high-pressure accumulator into a combustion chamber by means of the fuel injector, a value representative of a static flow rate through the fuel injector being determined...

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Hauptverfasser: JOOS KLAUS, MANNER PETRA, HOLLMANN TIMM, SCHENCK ZU SCHWEINSBERG ALEXANDER, AMLER MARKUS
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A method is described for determining a correction value for a fuel metering of a fuel injector, in which fuel is injected from a high-pressure accumulator into a combustion chamber by means of the fuel injector, a value representative of a static flow rate through the fuel injector being determined in the at least one injection process of the fuel injector, a ratio of a pressure difference occurring in the high pressure accumulator due to the injection process and an associated duration characteristic of the injection process is determined. A first correction value, which is used for control,is determined with a low learning speed and a second correction value is determined with a high learning speed. 说明一种用于求取用于燃料喷射器的燃料配量的校正值的方法,其中,借助于所述燃料喷射器将燃料从高压储存器喷射到燃烧室中,其中求取代表着流经燃料喷射器的静态的流量率的数值,在所述方法中在所述燃料喷射器的至少一次喷射过程中求取在所述高压储存器中由于所述喷射过程出现的压力差与所属的表征所述喷射过程的持续时间的比例。以低的学习速度来求取用于进行控制的第一校正值并且以高的学习速度来求取第二校正值。