Fuel injection system
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United States of America
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Jan 18, 2022
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N/A
app pub date -
May 17, 2021
filing date -
May 17, 2021
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Abstract
A pressure detection unit detects a fuel pressure in high-pressure fuel passages. A drive control unit controls opening and closing of pressure adjusting valves based on a drive command signal output to the fuel injection valve. An acquisition unit acquires an inflection point of the fuel pressure detected by the pressure detection unit and an inclination of the fuel pressure after the inflection point appears, after an output of the drive command signal. A delay time computation unit computes a response delay time of the pressure adjusting valve with respect to the drive command signal for each of the first on-off valve and the second on-off valve based on the inflection point and the inclination acquired by the acquisition unit.
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