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FUEL INJECTION CONTROL APPARATUS

  • US 20140034025A1
  • Filed: 06/20/2013
  • Published: 02/06/2014
  • Est. Priority Date: 08/01/2012
  • Status: Active Grant
First Claim
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1. A fuel injection control apparatus for an injector having a coil and a valve, the fuel injection control apparatus comprising:

  • a setting part for setting a drive period of the injector;

    a drive control part for driving the injector to open the valve by starting a power supply operation of supplying a power voltage to the coil of the injector to supply a current to the coil at a start time of the drive period set by the setting part, and for stopping the power supply operation to close the valve at an end time of the drive period;

    a detection part for detecting a valve-closing time of the injector based on the coil current, which decreases from the end time of the drive period,wherein the detection part detects, by comparing the coil current with each of plural comparison threshold values, each time that the coil current decreases to each of the plural comparison threshold values, and detects the valve-closing time based on detected times.

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