INTERNAL COMBUSTION ENGINE

To provide an internal combustion engine capable of accurately determining whether to complete switching of valve operation characteristics of a variable valve gear, to support the determination result appropriately.SOLUTION: An internal combustion engine comprising a variable valve gear (40) that switches operation characteristics of an internal combustion engine (E), comprises: detection means (Sia, Sib) of detecting the operation state of the variable valve gear (40); determination means (100) of determining whether to complete the switching of the operation characteristics of the internal combustion engine (E) based on the detection result of the detection means (Sia, Sib); and output suppression means (150) of suppressing the output of the internal combustion engine (E) in a case where the determination means (100) determines that the switching of the operation characteristics of the internal combustion engine (E) is incomplete.SELECTED DRAWING: Figure 12 【課題】可変動弁装置のバルブ作動特性の切替えが完了したか否かを精度良く判断し、その判断結果に適切に対応することができる内燃機関を供する。【解決手段】内燃機関(E)の作動特性を切り替える可変動弁装置(40)を備えた内燃機関において、可変動弁装置(40)の作動状態を検出する検出手段(Sia,Sib)と、検出手段(Sia,Sib)の検出結果に基づき内燃機関(E)の作動特性の切替えが完了したか否かを判断する判断手段(100)と、判断手段(100)が内燃機関(E)の作動特性の切替えが未完了と判断したときは、内燃機関(E)の出力を抑制する出力抑制手段(150)と、を備えた内燃機関である。【選択図】図１２