CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

• Main Authors: MIZUSHIRO TORU, MORIMOTO MASUHIRO, KAMIJO TOMOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2016
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To surely improve fuel economy performance of an engine while efficiently maintaining exhaust emission performance.SOLUTION: A control device 40 for an internal combustion engine 10 having an NOx catalyst 16 in an exhaust passage 14 so as to purify NOx in exhaust gas includes catalyst temperature acquiring sections 15 and 41 for acquiring a temperature of the NOx catalyst 16, an NOx catalyst activation determining section 43 for determining whether the NOx catalyst 16 is in an active state or not based on the temperature of the NOx catalyst 16 input from the catalyst temperature acquiring sections 15 and 41, and a retard injection control section 44 for retarding main injection timing of an injector 13 of the internal combustion engine 10 for a prescribed amount when the active state of the NOx catalyst 16 is determined by the NOx catalyst activation determining section 43.SELECTED DRAWING: Figure 2 【課題】排気エミッション性能を効果的に維持しつつ、エンジンの燃費性能を確実に向上せる。【解決手段】排気通路１４に排気中のＮＯｘを浄化するＮＯｘ触媒１６を備える内燃機関１０の制御装置４０であって、ＮＯｘ触媒１６の温度を取得する触媒温度取得部１５，４１と、触媒温度取得部１５，４１から入力されるＮＯｘ触媒１６の温度に基づいて、ＮＯｘ触媒１６が活性状態にあるか否かを判定するＮＯｘ触媒活性判定部４３と、ＮＯｘ触媒活性判定部４３によってＮＯｘ触媒１６が活性状態にあると判定された場合に、内燃機関１０のインジェクタ１３のメイン噴射タイミングを所定量リタードさせるリタード噴射制御部４４とを備える。【選択図】図２