CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

• Main Authors: MISAWA JUNDAI, MIURA HIROKI, OSADA HIRONARI
• Format: Patent
• Language: English; Japanese
• Published: 01.03.2018
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; LIGHTING; MECHANICAL ENGINEERING; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To suppress a decrease of torque caused by the large retardation of ignition timing from basic ignition timing by ignition timing control.SOLUTION: An ECU 100 being a control device of an internal combustion engine 1 comprises an ignition timing control unit 130 for performing ignition timing control for retarding ignition timing as a frequency of the occurrence of knocking is high, and a dynamic valve system control unit 120 for controlling a variable dynamic valve mechanism 15 so as to change the valve-closing timing of an intake valve 9 at a retardant side rather than an intake bottom dead point. Here, in the ECU 100, the dynamic valve system control unit 120 controls the variable dynamic valve mechanism 15 so that the valve-closing timing of the intake valve 9 reaches the retardant side compared with the case where a retardation amount is smaller than a prescribed amount when the retardation amount of the ignition timing from basic ignition timing is the prescribed amount or larger.SELECTED DRAWING: Figure 1 【課題】点火時期制御を通じて点火時期が基本点火時期から大きく遅角されていることによってトルクが小さくなってしまうことを抑制する。【解決手段】内燃機関１の制御装置であるＥＣＵ１００は、ノッキングの発生頻度が高いほど点火時期を遅角させる点火時期制御を行う点火時期制御部１３０と、吸気バルブ９の閉弁時期を吸気下死点よりも遅角側で変更するように可変動弁機構１５を制御する動弁系制御部１２０と、を備えている。そして、このＥＣＵ１００では、動弁系制御部１２０は、基本点火時期からの点火時期の遅角量が所定量以上であるときには、吸気バルブ９の閉弁時期が、前記遅角量が前記所定量よりも小さいときと比べて遅角側になるように可変動弁機構１５を制御する。【選択図】図１