| 摘要 |
The present invention relates to an electronic variable valve lift apparatus capable of opening and closing a valve without a camshaft and, specifically, to a valve apparatus capable of opening and closing the valve by changing the current direction of an electromagnet by slidingly arranging a permanent magnet fixed at the valve between the electromagnets fixed in the cylinder head. The present invention compensates the existing camless having the limit which does not control lift amount and accurate valve open and close timing according to a structure in which the electromagnet is arranged at the top and bottom of a magnetic substance and in which the accurate location of a crank shaft does not confirmed. The electronic variable valve lift apparatus forms information for the location of a crank shaft in a disk rotated by connecting to the crank shaft and reads the information through one or more sensors. After a control unit analyzes the location information of the crank shaft, the control unit controls the lift amount and the open and close timing of the valve by transmitting a signal to the electromagnetic which moves the valve. |
