INJECTION CONTROL DEVICE

To provide an injection control device which can change a detection accuracy of a valve closing timing depending on a situation.SOLUTION: A control IC 15 acquires, as sample data, the time variation of an electric voltage generated in driving a fuel injection valve 2, and calculates a dispersion deg...

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Bibliographic Details
Main Authors SUGANUMA YOHEI, FUKAYA RYO
Format Patent
LanguageEnglish
Japanese
Published 10.02.2022
Subjects
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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Summary:To provide an injection control device which can change a detection accuracy of a valve closing timing depending on a situation.SOLUTION: A control IC 15 acquires, as sample data, the time variation of an electric voltage generated in driving a fuel injection valve 2, and calculates a dispersion degree from the sample data of the electric voltage to determine a valve closing timing of stopping injection of fuel from the fuel injection valve 2. In addition, the control IC 15 changes the calculation of the dispersion degree, when a predetermined condition is satisfied.SELECTED DRAWING: Figure 1 【課題】状況に応じて閉弁タイミングの検出精度を変更できるようにした噴射制御装置を提供する。【解決手段】制御ＩＣ１５は、燃料噴射弁２を駆動したときに生じる電圧の時間変化をサンプルデータとして取得し、電圧のサンプルデータからばらつき度合を演算することで燃料噴射弁２から燃料の噴射を停止させる閉弁タイミングを求める。また制御ＩＣ１５は、所定の条件を満たしたときにばらつき度合の演算を変更する。【選択図】図１
Bibliography:Application Number: JP20200128237