CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

To provide a control device for an internal combustion engine capable of appropriately suppressing corrosion of a fuel injection valve due to adhesion of condensed water.SOLUTION: An ECU 40 for controlling an engine 10 which includes a fuel injection valve 21 for injecting fuel directly into a combustion chamber 12, and an EGR device 30 for recirculating exhaust gas exhausted from the combustion chamber 12 to an exhaust passage 25 as EGR gas into an intake passage 16, includes a parameter calculation part for, when condensed water flowing from the intake passage 16 into the combustion chamber 12 together with intake air adheres to an injection hole part 21a of the fuel injection valve 21, calculating a corrosion parameter showing an influence degree of the corrosion given to the injection hole part 21a by the condensed water in a period of time to the fuel injection of the fuel injection valve 21, and a vaporization promotion part for performing vaporization promotion processing to promote the vaporization of the condensed water adhered to the injection hole part 21a, on the basis of the corrosion parameter.SELECTED DRAWING: Figure 2 【課題】凝縮水の付着による燃料噴射弁の腐食を適正に抑制することができる内燃機関の制御装置を提供することにある。【解決手段】燃焼室１２内に燃料を直接噴射する燃料噴射弁２１と、燃焼室１２から排気通路２５に排出された排気をＥＧＲガスとして吸気通路１６に還流させるＥＧＲ装置３０と、を備えるエンジン１０を制御するＥＣＵ４０であって、吸気通路１６から吸気と共に燃焼室１２内に流入した凝縮水が燃料噴射弁２１の噴孔部２１ａに付着する場合に、燃料噴射弁２１の燃料噴射までの間において凝縮水により噴孔部２１ａに対して及ぼされる腐食の影響度を示す腐食パラメータを算出するパラメータ算出部と、腐食パラメータに基づいて、噴孔部２１ａに付着した凝縮水の蒸発を促進する蒸発促進処理を実施する蒸発促進部とを備える。【選択図】 図２