CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

• Main Authors: NAKANO TOMOHIRO, TANAKA SHOGO
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2024
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

To reduce hydrogen concentration in a crankcase without providing a ventilation fan.SOLUTION: An internal combustion engine 10 uses hydrogen as fuel. The internal combustion engine 10 has a communication passage causing a crankcase 19 and a surge tank 60 to communicate with each other. The control device 100 executes control for making an air fuel ratio of a mixture smaller when a target output of the internal combustion engine 10 is large than when the target output is small. The control device 100 executes pressure reduction processing for reducing pressure in the surge tank 60 when the target output is less than a prescribed value. The pressure reduction processing is the processing for reducing the pressure in the surge tank 60 as compared with the pressure before execution of the pressure reduction processing.SELECTED DRAWING: Figure 1 【課題】換気ファンをもうけることなく、クランクケース内の水素濃度を低下させる。【解決手段】内燃機関１０は水素を燃料とする。内燃機関１０はクランクケース１９とサージタンク６０とを連通する連通路を有している。制御装置１００は、内燃機関１０の目標出力が大きい場合に小さい場合よりも混合気の空燃比を小さくする制御を実行する。この制御装置１００は、目標出力が所定値未満であるときには、サージタンク６０内の圧力を低下させる圧力低下処理を実行する。圧力低下処理は、その圧力低下処理の実行前に比べてサージタンク６０内の圧力を低下させる処理である。【選択図】図１