| 摘要 |
PROBLEM TO BE SOLVED: To respond to an abnormality of a default mechanism which is necessary to secure a predetermined lift amount of an engine valve when an electric current is not carried in the electric motor for some reason, in a lift variable valve gear having a lift variable mechanism capable of changing the lift amount of the engine valve and an actuator including the electric motor exhibiting power for driving the lift variable mechanism. SOLUTION: In the lift variable valve gear, an abnormality detection means 118 detects an abnormality of the default mechanism for rotating and energizing the lift variable mechanism up to the position where the lift amount of the engine valve becomes predetermined one when an electric current is not carried in the electric motor 62. When the abnormality is detected by the abnormality detection means 118, operation of the actuator 60 connected to the lift variable mechanism so as to increase the lift amount of the engine valve as the operation amount of the electric motor 62 increases is limited by an operation limiting means 119. COPYRIGHT: (C)2008,JPO&INPIT
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