CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD
To effectively suppress corrosion of a nozzle hole portion facing a cylinder inner side of a cylinder inner injector.SOLUTION: A control device for an internal combustion engine includes: a temperature estimation section 110 for estimating a temperature of a nozzle hole portion of an injector 15 on...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
04.04.2019
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Subjects | |
Online Access | Get full text |
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Summary: | To effectively suppress corrosion of a nozzle hole portion facing a cylinder inner side of a cylinder inner injector.SOLUTION: A control device for an internal combustion engine includes: a temperature estimation section 110 for estimating a temperature of a nozzle hole portion of an injector 15 on the basis of an operating state of the internal combustion engine 10; a humidity estimation section 120 for estimating humidity in a cylinder faced by the nozzle hole portion of the injector 15 on the basis of intake air state amount of the internal combustion engine 10; a corrosion estimation section 130 for estimating corrosion of at least the nozzle hole portion of the injector 15 on the basis of the estimated temperature and humidity; and a control section 140 for performing corrosion suppression control for lowering the humidity of a cylinder inner side C in accordance with the estimated corrosion.SELECTED DRAWING: Figure 4
【課題】筒内インジェクタの筒内に臨む噴口部の腐食を効果的に抑制する。【解決手段】内燃機関10の運転状態に基づいてインジェクタ15の噴口部の温度を推定する温度推定部110と、内燃機関10の吸気状態量に基づいて、インジェクタ15の噴口部が臨む筒内の湿度を推定する湿度推定部120と、推定される温度及び、湿度に基づいて、少なくともインジェクタ15の噴口部の腐食を推定する腐食推定部130と、推定される腐食に応じて筒内Cの湿度を低下させる腐食抑制制御を実施する制御部140とを備えた。【選択図】図4 |
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Bibliography: | Application Number: JP20170178847 |