SOLENOID VALVE DRIVE DEVICE

• Main Authors: NISHIDA TOSHIKI, MATSUMOTO KYOHEI, MURANO WATARU
• Format: Patent
• Language: English; Japanese
• Published: 10.01.2019
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide a solenoid valve drive device capable of reducing processing load for detecting opening of a fuel injection valve.SOLUTION: A solenoid valve drive device comprises: a drive unit configured to control a first switching element into an off state after controlling the first switching element into an on state, and controlling a second switching element into an on state or off state so that drive current of a solenoid valve is within a predetermined range, to thereby open the solenoid valve; and a valve opening detection unit configured to detect opening of the solenoid valve in a case where a period where the second switching element is in the on state reduces.SELECTED DRAWING: Figure 3 【課題】燃料噴射弁の開弁を検知するための処理負荷を軽減可能な電磁弁駆動装置を提供する。【解決手段】第１のスイッチング素子をオン状態に制御した後に、第１のスイッチング素子をオフ状態に制御し、且つ前記電磁弁の駆動電流が所定範囲内になるように前記第２のスイッチング素子をオン状態又はオフ状態に制御することで、前記電磁弁を開弁状態に駆動する駆動部と、前記第２のスイッチング素子のオン状態の期間が減少した場合に前記電磁弁の開弁を検出する開弁検出部と、を備える。【選択図】図３