CONTROL DEVICE OF VARIABLE DYNAMIC VALVE MECHANISM OF INTERNAL COMBUSTION ENGINE

• Main Authors: KAWAGUCHI YOHEI, MISAWA JUNDAI, HIROMASA TOSHIAKI, OSADA HIRONARI, KUROMIYA HIDEO
• Format: Patent
• Language: English; Japanese
• Published: 07.02.2019
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

To provide a control device of a variable dynamic valve mechanism of an internal combustion engine which can easily obtain an execution opportunity while suppressing erroneous learning caused by the bite-in of foreign matters, and can perform reference position learning processing.SOLUTION: When a condition is established that, after a start of an internal combustion engine, a control shaft is displaced to a prescribed pre-warmup position from a prescribed start position, and warmup is finished, and after a finish of the warmup, an accelerator opening operation having an opening not smaller than a prescribed opening is firstly accepted, a control device of a variable dynamic valve mechanism of the internal combustion engine displaces a control shaft to a direction in which a suction air amount becomes large until the control shaft is stopped, acquires a displacement amount of the control shaft up to a position in which the control shaft is stopped from the pre-warmup position, when the displacement amount is smaller than a prescribed threshold, does not update a reference position, and when the displacement amount is not smaller than the prescribed threshold, updates the reference position to the stop position.SELECTED DRAWING: Figure 6 【課題】異物噛み込みによる誤学習を抑制しながら、実行契機が得やすい基準位置学習処理が可能な、内燃機関の可変動弁機構の制御装置を提供する。【解決手段】内燃機関の可変動弁機構の制御装置は、内燃機関の始動後、コントロールシャフトを所定の始動位置から所定の暖気前位置に変位させ、暖気が完了し、かつ、暖気完了後初めて所定の開度以上のアクセル開操作を受け付けるという条件が満たされた場合に、コントロールシャフトを吸入空気量が大きくなる方向に、コントロールシャフトが停止するまで変位させ、暖気前位置から、コントロールシャフトが停止した位置までの、コントロールシャフトの変位量を取得し、変位量が所定の閾値未満であれば、基準位置の更新を行わず、変位量が所定の閾値以上であれば、基準位置を停止した位置に更新する。【選択図】図６