IGNITION TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

To provide an ignition timing control device of an internal combustion engine which can prevent that torque outputted from the internal combustion engine becomes difficult to be increased.SOLUTION: A control device 30 being an ignition timing control device comprises: an F/B correction part 302 for updating an F/B correction value eaksc on the basis of a determination result whether or not knocking is generated in an internal combustion engine; a learning part 305 for updating an instantaneous component learning value and a long-term component learning value on the basis of a learning update amount based on the F/B correction value eaksc, and derives a total learning value eatll on the basis of the instantaneous component learning value and the long-term component learning value; and a requirement derivation part 307 for deriving timing which is corrected to a retardation side rather than base ignition timing eacalbse on the basis of the F/B correction value eaksc and the total learning value eatll. When updating the long-term component learning value, the learning part 305 updates the long-term component learning value within a range in which an update amount of the long-term component learning value within a preset specified period does not exceed a regulated amount.SELECTED DRAWING: Figure 5 【課題】内燃機関から出力されるトルクを増大させにくくなってしまうことを抑制できる内燃機関の点火時期制御装置を提供する。【解決手段】点火時期制御装置である制御装置３０は、内燃機関でノッキングが発生しているか否かの判定結果を基にＦ／Ｂ補正値ｅａｋｓｃを更新するＦ／Ｂ補正部３０２と、Ｆ／Ｂ補正値ｅａｋｓｃに基づいた学習更新量を基に即時成分学習値と長期成分学習値とを更新し、即時成分学習値と長期成分学習値とを基に合計学習値ｅａｔｌｌを導出する学習部３０５と、Ｆ／Ｂ補正値ｅａｋｓｃ及び合計学習値ｅａｔｌｌを基にベース点火時期ｅａｃａｌｂｓｅよりも遅角側に補正した時期を要求点火時期ｅａｆｉｎとして導出する要求導出部３０７とを備える。学習部３０５は、長期成分学習値を更新する場合、予め設定されている規定期間内での長期成分学習値の更新量が規定量を超えない範囲で長期成分学習値を更新する。【選択図】図５