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2. 发明申请

WO2016091848A1 FUEL INJECTION CONTROL IN AN INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：内燃机燃油喷射控制
公开(公告)号：WO2016091848A1
公开(公告)日：2016-06-16
申请号：PCT/EP2015/078917
申请日：2015-12-08
申请人： DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.À R.L.
发明人： COUET, Sebastien , COCHET, Thierry , ARCHAMBAULT, Philippe , FASOLO, Christian , DE OLIVEIRA, Fabien , MEISSONNIER, Guillaume
IPC分类号： F02D41/20 , F02D41/24 , F02D41/40
CPC分类号： F02D41/2467 , F02D41/20 , F02D41/40 , F02D2041/2051 , F02D2041/2055 , F02D2200/0618 , Y02T10/44
摘要： A method of fuel injection control in an internal combustion engine having at least one cylinder with an associated solenoid actuated fuel injector for performing injector events is presented. The injector has a valve group with a needle, which is at least indirectly controlled by a pressure force in a control chamber, which is in turn controlled by a control valve operated by the solenoid actuator. The method comprising the steps of: a) performing at least one injector event by applying, to said electromagnetic actuator, a drive pulse having a predetermined pulse width (PW); b) recording the voltage across said electromagnetic actuator, after the end of the drive pulse; c) processing the recorded voltage data to identify a predetermined waveform pattern in the corresponding secondary voltage derivative, following the end of the drive pulse; and d) computing a valve indicator (FWM) representative of the magnitude of said predetermined waveform pattern. This valve indicator can be used in a variety of applications related to injection control, and over the full injector operating range, e.g. for monitoring viscosity or lacquering, determining MDP, correcting for drift or voltage changes, determining the control valve lift.
摘要翻译：提出了一种具有至少一个气缸的内燃机中的燃料喷射控制方法，所述气缸具有用于执行喷射器事件的相关联的电磁致动燃料喷射器。喷射器具有带针的阀组，其至少由控制室中的压力间接地控制，控制室又由由螺线管致动器操作的控制阀控制。该方法包括以下步骤：a）通过向所述电磁致动器施加具有预定脉冲宽度（PW）的驱动脉冲来执行至少一个喷射器事件; b）在驱动脉冲结束之后记录所述电磁致动器的电压; c）处理记录的电压数据，以在驱动脉冲结束之后识别相应次级电压导数中的预定波形图案; 以及d）计算代表所述预定波形图案的幅度的阀门指示器（FWM）。该阀指示器可用于与注射控制相关的各种应用中，并且可以在整个喷射器工作范围内使用。用于监测粘度或涂漆，确定MDP，校正漂移或电压变化，确定控制阀升程。

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