In a variable valve mechanism, a control shaft is associated with an advance oil passage such that the same passage is closed by the control shaft when a maximum valve lift amount of an intake valve is equal to or larger than a reference lift amount. The control shaft is associated with the advance oil passage such that a range in which the control shaft displaces is limited to a range between a minimum value of the maximum valve lift amount and a lift amount just before the reference lift amount when an advance angle of the intake valve is equal to or larger than a reference advance angle.

 
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< Method for controlling and/or regulating a constant voltage converter for at least two electromagnetic valves of an internal combustion engine, especially an internal combustion engine in a motor vehicle

> Controller for vane-type variable valve timing adjusting mechanism

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