INTERNAL COMBUSTION ENGINE CONTROL APPARATUS

• Main Authors: ASAMI YOSHIKAZU, IDOGAWA MASANAO, SUGIMOTO MOTOHIRO, SUGIOKA HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 04.08.2023
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

To provide an internal combustion engine control apparatus with a deterioration of exhaust emission suppressed while securing the startability of an internal combustion engine.SOLUTION: An internal combustion engine control apparatus includes: an intermittent operation control part for executing automatic stop and automatic start of an internal combustion engine that has a port injection valve and an in-cylinder injection valve; a determination part for determining whether rich control is performed in which an air-fuel ratio is controlled to a rich side than a theoretical air-fuel ratio in automatic start, and whether an integral air-intake amount of the internal combustion engine since starting the automatic start is smaller than a given threshold; and an injection control part for executing, in a case where the determination by the determination part is positive, at least one of causing injection timing of the in-cylinder injection valve to approach timing of an intake stroke bottom dead point and decreasing a ratio of injection amount from the in-cylinder injection valve to a total fuel injection amount from the port injection valve and in-cylinder injection valve, compared to a case where the determination by the determination part is negative, thus executing suppressed injection control to suppress an exhaust amount of exhaust particulate from the internal combustion engine.SELECTED DRAWING: Figure 3 【課題】内燃機関の始動性を確保しつつ排気エミッションの悪化を抑制した内燃機関の制御装置を提供することを課題とする。【解決手段】ポート噴射弁及び筒内噴射弁を有した内燃機関の自動停止及び自動始動を実行する間欠運転制御部と、自動始動の際に空燃比を理論空燃比よりもリッチ側に制御するリッチ制御中であり、且つ自動始動開始からの前記内燃機関の積算吸気量が所定の閾値よりも少ないか否かを判定する判定部と、前記判定部により肯定判定がなされた場合に、前記判定部により否定判定がなされた場合よりも、前記筒内噴射弁の噴射タイミングを吸気行程下死点のタイミングに接近させる、及び前記ポート噴射弁及び筒内噴射弁からの総燃料噴射量に占める前記筒内噴射弁からの噴射量の比率を減少させる、の少なくとも一方を実行することにより、前記内燃機関からの排気微粒子の排出量を抑制する抑制噴射制御を実行する噴射制御部と、を備えた内燃機関の制御装置。【選択図】図３