| 摘要 |
The present invention relates to a cylinder deactivation device comprising: an outer body coupled to a cylinder head, having a contact surface touching a cam, and having a skirt extended from the outside of the contact surface in the opening and closing direction of a valve; an inner body coupled to the inside of the outer body, having an inner through-hole bored in the center thereof, and having a sliding surface formed therein and capable of sliding in the opening and closing direction of the valve; a valve lift of which one side is coupled to be able to slide on the sliding surface and the other side is coupled to a valve sheet touching the valve so that the valve lift can be actuated between an unlocking position in which the valve lift relatively slides against the bodies while moved depending on the rotation of the cam against the cylinder head and a locking position in which the valve lift is moved along with the bodies against the cylinder head; a lost motion spring of which one side is supported by the valve and the other side is supported by the outer body so that the lost motion spring can elastically pressurize one of the valve and the outer body against the other of the valve and the outer body; and multiple latching parts coupled to the inner body, arranged on the facing positions of the inner body, and able to be moved between the unlocking position in which the valve is not opened or closed and the locking position in which the valve is opened or closed depending on the rotation of the cam when inserted into or extracted from the inner body against the valve lift even if the cam is rotated. Therefore, according to the present invention, components relating to switching can be excluded from the valve lift in the cylinder deactivation device, the size of the cylinder deactivation device can be reduced, the outer diameter of the cylinder deactivation device can be reduced, the contact surface can be secured, and activation and stability therein can be improved. |
